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https://sourceware.org/git/binutils-gdb.git
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2035 lines
56 KiB
C
2035 lines
56 KiB
C
/* This file is part of the program psim.
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Copyright 1994, 1995, 1996, 1997, 2003 Andrew Cagney
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _EMUL_CHIRP_C_
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#define _EMUL_CHIRP_C_
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/* Note: this module is called via a table. There is no benefit in
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making it inline */
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#include "emul_generic.h"
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#include "emul_chirp.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifndef STATIC_INLINE_EMUL_CHIRP
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#define STATIC_INLINE_EMUL_CHIRP STATIC_INLINE
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#endif
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/* EMULATION
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OpenFirmware - IEEE Standard for Boot (Initialization
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Configuration) Firmware.
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DESCRIPTION
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BUGS
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This code assumes that the memory node has #address-cells and
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#size-cells set to one. For future implementations, this may not
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be the case.
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*/
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/* Descriptor of the open boot services being emulated */
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typedef int (chirp_handler)
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(os_emul_data *data,
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cpu *processor,
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unsigned_word cia);
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typedef struct _chirp_services {
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const char *name;
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chirp_handler *handler;
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} chirp_services;
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/* The OpenBoot emulation is, at any time either waiting for a client
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request or waiting on a client callback */
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typedef enum {
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serving,
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emulating,
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faulting,
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} chirp_emul_state;
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struct _os_emul_data {
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chirp_emul_state state;
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unsigned_word return_address;
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unsigned_word arguments;
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unsigned_word n_args;
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unsigned_word n_returns;
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chirp_services *service;
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device *root;
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chirp_services *services;
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/* configuration */
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unsigned_word memory_size;
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unsigned_word real_base;
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unsigned_word real_size;
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unsigned_word virt_base;
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unsigned_word virt_size;
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int real_mode;
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int little_endian;
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int floating_point_available;
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int interrupt_prefix;
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unsigned_word load_base;
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/* hash table */
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unsigned_word nr_page_table_entry_groups;
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unsigned_word htab_offset;
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unsigned_word htab_ra;
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unsigned_word htab_va;
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unsigned_word sizeof_htab;
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/* virtual address of htab */
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unsigned_word stack_offset;
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unsigned_word stack_ra;
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unsigned_word stack_va;
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unsigned_word sizeof_stack;
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/* addresses of emulation instructions virtual/real */
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unsigned_word code_offset;
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unsigned_word code_va;
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unsigned_word code_ra;
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unsigned_word sizeof_code;
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unsigned_word code_client_va;
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unsigned_word code_client_ra;
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unsigned_word code_callback_va;
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unsigned_word code_callback_ra;
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unsigned_word code_loop_va;
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unsigned_word code_loop_ra;
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};
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/* returns the name of the corresponding Ihandle */
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static const char *
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ihandle_name(device_instance *ihandle)
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{
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if (ihandle == NULL)
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return "";
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else
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return device_name(device_instance_device(ihandle));
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}
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/* Read/write the argument list making certain that all values are
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converted to/from host byte order.
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In the below only n_args+n_returns is read/written */
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static int
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chirp_read_t2h_args(void *args,
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int sizeof_args,
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int n_args,
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int n_returns,
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os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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unsigned_cell *words;
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int i;
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/* check against the number of arguments specified by the client
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program */
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if ((n_args >= 0 && data->n_args != n_args)
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|| (n_returns >= 0 && data->n_returns != n_returns)) {
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TRACE(trace_os_emul, ("%s - invalid nr of args - n_args=%ld, n_returns=%ld\n",
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data->service->name,
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(long)data->n_args,
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(long)data->n_returns));
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return -1;
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}
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/* check that there is enough space */
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if (sizeof(unsigned_cell) * (data->n_args + data->n_returns) > sizeof_args)
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return -1;
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/* bring in the data */
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memset(args, 0, sizeof_args);
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emul_read_buffer(args, data->arguments + 3 * sizeof(unsigned_cell),
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sizeof(unsigned_cell) * (data->n_args + data->n_returns),
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processor, cia);
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/* convert all words to host format */
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words = args;
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for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++)
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words[i] = T2H_cell(words[i]);
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return 0;
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}
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static void
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chirp_write_h2t_args(void *args,
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int sizeof_args,
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os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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int i;
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unsigned_cell *words;
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/* convert to target everything */
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words = args;
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for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++)
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words[i] = H2T_cell(words[i]);
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/* bring in the data */
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emul_write_buffer(args, data->arguments + 3 * sizeof(unsigned_cell),
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sizeof(unsigned_cell) * (data->n_args + data->n_returns),
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processor, cia);
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}
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/* OpenBoot emulation functions */
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/* client interface */
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static int
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chirp_emul_test(os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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struct test_args {
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/*in*/
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unsigned_cell name; /*string*/
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/*out*/
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unsigned_cell missing;
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} args;
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char name[32];
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chirp_services *service = NULL;
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/* read in the arguments */
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if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
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return -1;
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emul_read_string(name, args.name, sizeof(name),
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processor, cia);
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TRACE(trace_os_emul, ("test - in - name=`%s'\n", name));
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/* see if we know about the service */
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service = data->services;
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while (service->name != NULL && strcmp(service->name, name) != 0) {
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service++;
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}
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if (service->name == NULL)
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args.missing = -1;
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else
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args.missing = 0;
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/* write the arguments back out */
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TRACE(trace_os_emul, ("test - out - missing=%ld\n",
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(long)args.missing));
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chirp_write_h2t_args(&args,
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sizeof(args),
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data,
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processor, cia);
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return 0;
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}
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/* Device tree */
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static int
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chirp_emul_peer(os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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struct peer_args {
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/*in*/
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unsigned_cell phandle;
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/*out*/
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unsigned_cell sibling_phandle;
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} args;
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device *phandle;
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device *sibling_phandle = NULL;
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/* read in the arguments */
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if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
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return -1;
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phandle = external_to_device(data->root, args.phandle);
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TRACE(trace_os_emul, ("peer - in - phandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.phandle,
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(unsigned long)phandle,
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(phandle == NULL ? "" : device_name(phandle))));
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/* find the peer */
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if (args.phandle == 0) {
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sibling_phandle = data->root;
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args.sibling_phandle = device_to_external(sibling_phandle);
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}
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else if (phandle == NULL) {
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sibling_phandle = NULL;
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args.sibling_phandle = -1;
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}
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else {
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sibling_phandle = device_sibling(phandle);
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if (sibling_phandle == NULL)
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args.sibling_phandle = 0;
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else
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args.sibling_phandle = device_to_external(sibling_phandle);
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}
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/* write the arguments back out */
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TRACE(trace_os_emul, ("peer - out - sibling_phandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.sibling_phandle,
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(unsigned long)sibling_phandle,
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(sibling_phandle == NULL ? "" : device_name(sibling_phandle))));
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chirp_write_h2t_args(&args,
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sizeof(args),
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data,
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processor, cia);
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return 0;
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}
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static int
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chirp_emul_child(os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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struct child_args {
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/*in*/
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unsigned_cell phandle;
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/*out*/
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unsigned_cell child_phandle;
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} args;
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device *phandle;
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device *child_phandle;
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/* read the arguments in */
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if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
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return -1;
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phandle = external_to_device(data->root, args.phandle);
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TRACE(trace_os_emul, ("child - in - phandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.phandle,
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(unsigned long)phandle,
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(phandle == NULL ? "" : device_name(phandle))));
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/* find a child */
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if (args.phandle == 0
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|| phandle == NULL) {
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child_phandle = NULL;
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args.child_phandle = -1;
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}
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else {
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child_phandle = device_child(phandle);
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if (child_phandle == NULL)
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args.child_phandle = 0;
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else
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args.child_phandle = device_to_external(child_phandle);
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}
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/* write the result out */
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TRACE(trace_os_emul, ("child - out - child_phandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.child_phandle,
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(unsigned long)child_phandle,
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(child_phandle == NULL ? "" : device_name(child_phandle))));
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chirp_write_h2t_args(&args,
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sizeof(args),
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data,
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processor, cia);
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return 0;
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}
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static int
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chirp_emul_parent(os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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struct parent_args {
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/*in*/
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unsigned_cell phandle;
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/*out*/
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unsigned_cell parent_phandle;
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} args;
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device *phandle;
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device *parent_phandle;
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/* read the args in */
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if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
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return -1;
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phandle = external_to_device(data->root, args.phandle);
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TRACE(trace_os_emul, ("parent - in - phandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.phandle,
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(unsigned long)phandle,
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(phandle == NULL ? "" : device_name(phandle))));
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/* find a parent */
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if (args.phandle == 0
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|| phandle == NULL) {
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parent_phandle = NULL;
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args.parent_phandle = -1;
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}
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else {
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parent_phandle = device_parent(phandle);
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if (parent_phandle == NULL)
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args.parent_phandle = 0;
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else
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args.parent_phandle = device_to_external(parent_phandle);
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}
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/* return the result */
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TRACE(trace_os_emul, ("parent - out - parent_phandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.parent_phandle,
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(unsigned long)parent_phandle,
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(parent_phandle == NULL ? "" : device_name(parent_phandle))));
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chirp_write_h2t_args(&args,
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sizeof(args),
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data,
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processor, cia);
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return 0;
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}
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static int
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chirp_emul_instance_to_package(os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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struct instance_to_package_args {
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/*in*/
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unsigned_cell ihandle;
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/*out*/
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unsigned_cell phandle;
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} args;
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device_instance *ihandle;
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device *phandle = NULL;
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/* read the args in */
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if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
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return -1;
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ihandle = external_to_device_instance(data->root, args.ihandle);
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TRACE(trace_os_emul, ("instance-to-package - in - ihandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.ihandle,
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(unsigned long)ihandle,
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ihandle_name(ihandle)));
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/* find the corresponding phandle */
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if (ihandle == NULL) {
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phandle = NULL;
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args.phandle = -1;
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}
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else {
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phandle = device_instance_device(ihandle);
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args.phandle = device_to_external(phandle);
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}
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/* return the result */
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TRACE(trace_os_emul, ("instance-to-package - out - phandle=0x%lx(0x%lx`%s')\n",
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(unsigned long)args.phandle,
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(unsigned long)phandle,
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(phandle == NULL ? "" : device_name(phandle))));
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chirp_write_h2t_args(&args,
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sizeof(args),
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data,
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processor, cia);
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return 0;
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}
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static int
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chirp_emul_getproplen(os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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struct getproplen_args {
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/*in*/
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unsigned_cell phandle;
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unsigned_cell name;
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/*out*/
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unsigned_cell proplen;
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} args;
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char name[32];
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device *phandle;
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/* read the args in */
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if (chirp_read_t2h_args(&args, sizeof(args), 2, 1, data, processor, cia))
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return -1;
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phandle = external_to_device(data->root, args.phandle);
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emul_read_string(name,
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args.name,
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sizeof(name),
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processor, cia);
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TRACE(trace_os_emul, ("getproplen - in - phandle=0x%lx(0x%lx`%s') name=`%s'\n",
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(unsigned long)args.phandle,
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(unsigned long)phandle,
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(phandle == NULL ? "" : device_name(phandle)),
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name));
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/* find our prop and get its length */
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if (args.phandle == 0
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|| phandle == NULL) {
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args.proplen = -1;
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}
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else {
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const device_property *prop = device_find_property(phandle, name);
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if (prop == (device_property*)0) {
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args.proplen = -1;
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}
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else {
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args.proplen = prop->sizeof_array;
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}
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}
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/* return the result */
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TRACE(trace_os_emul, ("getproplen - out - proplen=%ld\n",
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(unsigned long)args.proplen));
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chirp_write_h2t_args(&args,
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sizeof(args),
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data,
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processor, cia);
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return 0;
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}
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static int
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chirp_emul_getprop(os_emul_data *data,
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cpu *processor,
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unsigned_word cia)
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{
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struct getprop_args {
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/*in*/
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unsigned_cell phandle;
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unsigned_cell name;
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unsigned_cell buf;
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unsigned_cell buflen;
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/*out*/
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unsigned_cell size;
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} args;
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char name[32];
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device *phandle;
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/* read in the args, the return is optional */
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if (chirp_read_t2h_args(&args, sizeof(args), 4, -1, data, processor, cia))
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return -1;
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phandle = external_to_device(data->root, args.phandle);
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emul_read_string(name,
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args.name,
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sizeof(name),
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processor, cia);
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TRACE(trace_os_emul, ("getprop - in - phandle=0x%lx(0x%lx`%s') name=`%s' buf=0x%lx buflen=%ld\n",
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(unsigned long)args.phandle,
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(unsigned long)phandle,
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(phandle == NULL ? "" : device_name(phandle)),
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name,
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(unsigned long)args.buf,
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(unsigned long)args.buflen));
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/* get the property */
|
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if (args.phandle == 0
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|| phandle == NULL) {
|
|
args.size = -1;
|
|
}
|
|
else {
|
|
const device_property *prop = device_find_property(phandle, name);
|
|
if (prop == NULL) {
|
|
args.size = -1;
|
|
}
|
|
else {
|
|
int size = args.buflen;
|
|
if (size > prop->sizeof_array)
|
|
size = prop->sizeof_array;
|
|
emul_write_buffer(prop->array, args.buf,
|
|
size,
|
|
processor, cia);
|
|
args.size = size;
|
|
switch (prop->type) {
|
|
case string_property:
|
|
TRACE(trace_os_emul, ("getprop - string `%s'\n",
|
|
device_find_string_property(phandle, name)));
|
|
break;
|
|
case ihandle_property:
|
|
TRACE(trace_os_emul, ("getprop - ihandle=0x%lx(0x%lx`%s')\n",
|
|
BE2H_cell(*(unsigned_cell*)prop->array),
|
|
(unsigned long)device_find_ihandle_property(phandle, name),
|
|
ihandle_name(device_find_ihandle_property(phandle, name))));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* write back the result */
|
|
if (data->n_returns == 0)
|
|
TRACE(trace_os_emul, ("getprop - out - size=%ld (not returned)\n",
|
|
(unsigned long)args.size));
|
|
else {
|
|
TRACE(trace_os_emul, ("getprop - out - size=%ld\n",
|
|
(unsigned long)args.size));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_nextprop(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct nextprop_args {
|
|
/*in*/
|
|
unsigned_cell phandle;
|
|
unsigned_cell previous;
|
|
unsigned_cell buf;
|
|
/*out*/
|
|
unsigned_cell flag;
|
|
} args;
|
|
char previous[32];
|
|
device *phandle;
|
|
/* read in the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
|
|
return -1;
|
|
phandle = external_to_device(data->root, args.phandle);
|
|
if (args.previous != 0)
|
|
emul_read_string(previous,
|
|
args.previous,
|
|
sizeof(previous),
|
|
processor, cia);
|
|
else
|
|
/* If previous is NULL, make it look like the empty string. The
|
|
next property after the empty string is the first property. */
|
|
strcpy (previous, "");
|
|
TRACE(trace_os_emul, ("nextprop - in - phandle=0x%lx(0x%lx`%s') previous=`%s' buf=0x%lx\n",
|
|
(unsigned long)args.phandle,
|
|
(unsigned long)phandle,
|
|
(phandle == NULL ? "" : device_name(phandle)),
|
|
previous,
|
|
(unsigned long)args.buf));
|
|
/* find the next property */
|
|
if (args.phandle == 0
|
|
|| phandle == NULL) {
|
|
args.flag = -1;
|
|
}
|
|
else {
|
|
const device_property *prev_prop = device_find_property(phandle, previous);
|
|
if (prev_prop == NULL) {
|
|
if (strcmp (previous, "") == 0)
|
|
args.flag = 0; /* No properties */
|
|
else
|
|
args.flag = -1; /* name invalid */
|
|
}
|
|
else {
|
|
const device_property *next_prop;
|
|
if (strcmp (previous, "") == 0) {
|
|
next_prop = prev_prop; /* The first property. */
|
|
}
|
|
else {
|
|
next_prop = device_next_property(prev_prop);
|
|
}
|
|
if (next_prop == NULL) {
|
|
args.flag = 0; /* last property */
|
|
}
|
|
else {
|
|
emul_write_buffer(next_prop->name, args.buf, strlen(next_prop->name),
|
|
processor, cia);
|
|
TRACE(trace_os_emul, ("nextprop - name=`%s'\n", next_prop->name));
|
|
args.flag = 1; /* worked ok */
|
|
}
|
|
}
|
|
}
|
|
/* write back the result */
|
|
TRACE(trace_os_emul, ("nextprop - out - flag=%ld\n",
|
|
(unsigned long)args.flag));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
#if 0
|
|
static int
|
|
chirp_emul_setprop(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
error("chirp: setprop method not implemented\n");
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int
|
|
chirp_emul_canon(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct canon_args {
|
|
/*in*/
|
|
unsigned_cell device_specifier;
|
|
unsigned_cell buf;
|
|
unsigned_cell buflen;
|
|
/*out*/
|
|
unsigned_cell length;
|
|
} args;
|
|
char device_specifier[1024];
|
|
device *phandle;
|
|
const char *path;
|
|
int length;
|
|
/* read in the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
|
|
return -1;
|
|
emul_read_string(device_specifier,
|
|
args.device_specifier,
|
|
sizeof(device_specifier),
|
|
processor, cia);
|
|
TRACE(trace_os_emul, ("canon - in - device_specifier=`%s' buf=0x%lx buflen=%lx\n",
|
|
device_specifier,
|
|
(unsigned long)args.buf,
|
|
(unsigned long)args.buflen));
|
|
/* canon the name */
|
|
phandle = tree_find_device(data->root, device_specifier);
|
|
if (phandle == NULL) {
|
|
length = -1;
|
|
path = "";
|
|
args.length = -1;
|
|
}
|
|
else {
|
|
path = device_path(phandle);
|
|
length = strlen(path);
|
|
if (length >= args.buflen)
|
|
length = args.buflen - 1;
|
|
emul_write_buffer(path, args.buf, length,
|
|
processor, cia);
|
|
args.length = length;
|
|
}
|
|
/* write back the result */
|
|
TRACE(trace_os_emul, ("canon - out - length=%ld buf=`%s'\n",
|
|
(unsigned long)args.length,
|
|
path));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_finddevice(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct finddevice_args {
|
|
/*in*/
|
|
unsigned_cell device_specifier;
|
|
/*out*/
|
|
unsigned_cell phandle;
|
|
} args;
|
|
char device_specifier[1024];
|
|
device *phandle;
|
|
/* get the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
|
|
return -1;
|
|
emul_read_string(device_specifier,
|
|
args.device_specifier,
|
|
sizeof(device_specifier),
|
|
processor, cia);
|
|
TRACE(trace_os_emul, ("finddevice - in - device_specifier=`%s'\n",
|
|
device_specifier));
|
|
/* find the device */
|
|
phandle = tree_find_device(data->root, device_specifier);
|
|
if (phandle == NULL)
|
|
args.phandle = -1;
|
|
else
|
|
args.phandle = device_to_external(phandle);
|
|
/* return its phandle */
|
|
TRACE(trace_os_emul, ("finddevice - out - phandle=0x%lx(0x%lx`%s')\n",
|
|
(unsigned long)args.phandle,
|
|
(unsigned long)phandle,
|
|
(phandle == NULL ? "" : device_name(phandle))));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_instance_to_path(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct instance_to_path_args {
|
|
/*in*/
|
|
unsigned_cell ihandle;
|
|
unsigned_cell buf;
|
|
unsigned_cell buflen;
|
|
/*out*/
|
|
unsigned_cell length;
|
|
} args;
|
|
device_instance *ihandle;
|
|
const char *path;
|
|
int length;
|
|
/* get the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
|
|
return -1;
|
|
ihandle = external_to_device_instance(data->root, args.ihandle);
|
|
TRACE(trace_os_emul, ("instance-to-path - in - ihandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n",
|
|
(unsigned long)args.ihandle,
|
|
(unsigned long)ihandle,
|
|
ihandle_name(ihandle),
|
|
(unsigned long)args.buf,
|
|
(unsigned long)args.buflen));
|
|
/* get the devices name */
|
|
if (ihandle == NULL) {
|
|
args.length = -1;
|
|
path = "(null)";
|
|
}
|
|
else {
|
|
path = device_instance_path(ihandle);
|
|
length = strlen(path);
|
|
if (length >= args.buflen)
|
|
length = args.buflen - 1;
|
|
emul_write_buffer(path, args.buf, length,
|
|
processor, cia);
|
|
args.length = length;
|
|
}
|
|
/* return its phandle */
|
|
TRACE(trace_os_emul, ("instance-to-path - out - length=%ld buf=`%s')\n",
|
|
(unsigned long)args.length,
|
|
path));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_package_to_path(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct package_to_path_args {
|
|
/*in*/
|
|
unsigned_cell phandle;
|
|
unsigned_cell buf;
|
|
unsigned_cell buflen;
|
|
/*out*/
|
|
unsigned_cell length;
|
|
} args;
|
|
device *phandle;
|
|
const char *path;
|
|
/* get the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
|
|
return -1;
|
|
phandle = external_to_device(data->root, args.phandle);
|
|
TRACE(trace_os_emul, ("package-to-path - in - phandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n",
|
|
(unsigned long)args.phandle,
|
|
(unsigned long)phandle,
|
|
(phandle == NULL ? "" : device_name(phandle)),
|
|
(unsigned long)args.buf,
|
|
(unsigned long)args.buflen));
|
|
/* get the devices name */
|
|
if (phandle == NULL) {
|
|
args.length = -1;
|
|
path = "(null)";
|
|
}
|
|
else {
|
|
int length;
|
|
path = device_path(phandle);
|
|
length = strlen(path);
|
|
if (length >= args.buflen)
|
|
length = args.buflen - 1;
|
|
emul_write_buffer(path, args.buf, length,
|
|
processor, cia);
|
|
args.length = length;
|
|
}
|
|
/* return its phandle */
|
|
TRACE(trace_os_emul, ("package-to-path - out - length=%ld buf=`%s')\n",
|
|
(unsigned long)args.length,
|
|
path));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_call_method(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct call_method_args {
|
|
/*in*/
|
|
unsigned_cell method;
|
|
unsigned_cell ihandle;
|
|
/*in/out*/
|
|
unsigned_cell stack[13]; /*6in + 6out + catch */
|
|
} args;
|
|
char method[32];
|
|
device_instance *ihandle;
|
|
/* some useful info about our mini stack */
|
|
int n_stack_args;
|
|
int n_stack_returns;
|
|
int stack_catch_result;
|
|
int stack_returns;
|
|
/* read the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), -1, -1, data, processor, cia))
|
|
return -1;
|
|
emul_read_string(method,
|
|
args.method,
|
|
sizeof(method),
|
|
processor, cia);
|
|
ihandle = external_to_device_instance(data->root, args.ihandle);
|
|
n_stack_args = data->n_args - 2;
|
|
n_stack_returns = data->n_returns - 1;
|
|
stack_catch_result = n_stack_args;
|
|
stack_returns = stack_catch_result + 1;
|
|
TRACE(trace_os_emul, ("call-method - in - n_args=%ld n_returns=%ld method=`%s' ihandle=0x%lx(0x%lx`%s')\n",
|
|
(unsigned long)data->n_args,
|
|
(unsigned long)data->n_returns,
|
|
method,
|
|
(unsigned long)args.ihandle,
|
|
(unsigned long)ihandle,
|
|
ihandle_name(ihandle)));
|
|
/* see if we can emulate this method */
|
|
if (ihandle == NULL) {
|
|
/* OpenFirmware doesn't define this error */
|
|
error("chirp: invalid ihandle passed to call-method method");
|
|
}
|
|
else {
|
|
args.stack[stack_catch_result] =
|
|
device_instance_call_method(ihandle,
|
|
method,
|
|
n_stack_args,
|
|
&args.stack[0],
|
|
n_stack_returns,
|
|
&args.stack[stack_returns]);
|
|
}
|
|
/* finished */
|
|
TRACE(trace_os_emul, ("call-method - out - catch-result=%ld\n",
|
|
(unsigned long)args.stack[stack_catch_result]));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Device I/O */
|
|
|
|
static int
|
|
chirp_emul_open(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct open_args {
|
|
/*in*/
|
|
unsigned_cell device_specifier;
|
|
/*out*/
|
|
unsigned_cell ihandle;
|
|
} args;
|
|
char device_specifier[1024];
|
|
device_instance *ihandle;
|
|
/* read the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
|
|
return -1;
|
|
emul_read_string(device_specifier,
|
|
args.device_specifier,
|
|
sizeof(device_specifier),
|
|
processor, cia);
|
|
TRACE(trace_os_emul, ("open - in - device_specifier=`%s'\n",
|
|
device_specifier));
|
|
/* open the device */
|
|
ihandle = tree_instance(data->root, device_specifier);
|
|
if (ihandle == NULL)
|
|
args.ihandle = -1;
|
|
else
|
|
args.ihandle = device_instance_to_external(ihandle);
|
|
/* return the ihandle result */
|
|
TRACE(trace_os_emul, ("open - out - ihandle=0x%lx(0x%lx`%s')\n",
|
|
(unsigned long)args.ihandle,
|
|
(unsigned long)ihandle,
|
|
ihandle_name(ihandle)));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_close(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct close_args {
|
|
/*in*/
|
|
unsigned_cell ihandle;
|
|
/*out*/
|
|
} args;
|
|
device_instance *ihandle;
|
|
/* read the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 1, 0, data, processor, cia))
|
|
return -1;
|
|
ihandle = external_to_device_instance(data->root, args.ihandle);
|
|
TRACE(trace_os_emul, ("close - in - ihandle=0x%lx(0x%lx`%s')\n",
|
|
(unsigned long)args.ihandle,
|
|
(unsigned long)ihandle,
|
|
ihandle_name(ihandle)));
|
|
/* close the device */
|
|
if (ihandle == NULL) {
|
|
/* OpenFirmware doesn't define this error */
|
|
error("chirp: invalid ihandle passed to close method");
|
|
}
|
|
else {
|
|
device_instance_delete(ihandle);
|
|
}
|
|
/* return the ihandle result */
|
|
TRACE(trace_os_emul, ("close - out\n"));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_read(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct read_args {
|
|
/*in*/
|
|
unsigned_cell ihandle;
|
|
unsigned_cell addr;
|
|
unsigned_cell len;
|
|
/*out*/
|
|
unsigned_cell actual;
|
|
} args;
|
|
char buf[1024];
|
|
device_instance *ihandle;
|
|
/* read the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
|
|
return -1;
|
|
ihandle = external_to_device_instance(data->root, args.ihandle);
|
|
TRACE(trace_os_emul, ("read - in - ihandle=0x%lx(0x%lx`%s') addr=0x%lx len=%ld\n",
|
|
(unsigned long)args.ihandle,
|
|
(unsigned long)ihandle,
|
|
ihandle_name(ihandle),
|
|
(unsigned long)args.addr,
|
|
(unsigned long)args.len));
|
|
if (ihandle == NULL) {
|
|
/* OpenFirmware doesn't define this error */
|
|
error("chirp: invalid ihandle passed to read method");
|
|
}
|
|
else {
|
|
/* do the reads */
|
|
int actual = 0;
|
|
while (actual < args.len) {
|
|
int remaining = args.len - actual;
|
|
int to_read = (remaining <= sizeof(buf) ? remaining : sizeof(buf));
|
|
int nr_read = device_instance_read(ihandle, buf, to_read);
|
|
if (nr_read < 0) {
|
|
actual = nr_read; /* the error */
|
|
break;
|
|
}
|
|
else if (nr_read == 0) {
|
|
break;
|
|
}
|
|
emul_write_buffer(buf,
|
|
args.addr + actual,
|
|
nr_read,
|
|
processor, cia);
|
|
actual += nr_read;
|
|
}
|
|
if (actual >= 0) {
|
|
args.actual = actual;
|
|
if (actual < sizeof(buf))
|
|
buf[actual] = '\0';
|
|
else
|
|
buf[sizeof(buf) - 1] = '\0';
|
|
}
|
|
else {
|
|
switch (actual) {
|
|
case sim_io_eof:
|
|
args.actual = 0;
|
|
break;
|
|
case sim_io_not_ready:
|
|
ASSERT(sim_io_not_ready == -2);
|
|
args.actual = sim_io_not_ready;
|
|
break;
|
|
default:
|
|
error("Bad error value %ld", (long)actual);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/* return the result */
|
|
TRACE(trace_os_emul, ("read - out - actual=%ld `%s'\n",
|
|
(long)args.actual,
|
|
((args.actual > 0 && args.actual < sizeof(buf)) ? buf : "")
|
|
));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_write(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct write_args {
|
|
/*in*/
|
|
unsigned_cell ihandle;
|
|
unsigned_cell addr;
|
|
unsigned_cell len;
|
|
/*out*/
|
|
unsigned_cell actual;
|
|
} args;
|
|
char buf[1024];
|
|
device_instance *ihandle;
|
|
int actual;
|
|
/* get the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
|
|
return -1;
|
|
actual = args.len;
|
|
if (actual >= sizeof(buf))
|
|
actual = sizeof(buf) - 1;
|
|
emul_read_buffer(buf,
|
|
args.addr,
|
|
actual,
|
|
processor, cia);
|
|
buf[actual] = '\0';
|
|
ihandle = external_to_device_instance(data->root, args.ihandle);
|
|
TRACE(trace_os_emul, ("write - in - ihandle=0x%lx(0x%lx`%s') `%s' (%ld)\n",
|
|
(unsigned long)args.ihandle,
|
|
(unsigned long)ihandle,
|
|
ihandle_name(ihandle),
|
|
buf, (long)actual));
|
|
if (ihandle == NULL) {
|
|
/* OpenFirmware doesn't define this error */
|
|
error("chirp: invalid ihandle passed to write method");
|
|
}
|
|
else {
|
|
/* write it out */
|
|
actual = device_instance_write(ihandle, buf, actual);
|
|
if (actual < 0)
|
|
args.actual = 0;
|
|
else
|
|
args.actual = actual;
|
|
}
|
|
/* return the result */
|
|
TRACE(trace_os_emul, ("write - out - actual=%ld\n",
|
|
(long)args.actual));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_seek(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct seek_args {
|
|
/*in*/
|
|
unsigned_cell ihandle;
|
|
unsigned_cell pos_hi;
|
|
unsigned_cell pos_lo;
|
|
/*out*/
|
|
unsigned_cell status;
|
|
} args;
|
|
int status;
|
|
device_instance *ihandle;
|
|
/* get the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
|
|
return -1;
|
|
ihandle = external_to_device_instance(data->root, args.ihandle);
|
|
TRACE(trace_os_emul, ("seek - in - ihandle=0x%lx(0x%lx`%s') pos.hi=0x%lx pos.lo=0x%lx\n",
|
|
(unsigned long)args.ihandle,
|
|
(unsigned long)ihandle,
|
|
ihandle_name(ihandle),
|
|
args.pos_hi, args.pos_lo));
|
|
if (ihandle == NULL) {
|
|
/* OpenFirmware doesn't define this error */
|
|
error("chirp: invalid ihandle passed to seek method");
|
|
}
|
|
else {
|
|
/* seek it out */
|
|
status = device_instance_seek(ihandle, args.pos_hi, args.pos_lo);
|
|
args.status = status;
|
|
}
|
|
/* return the result */
|
|
TRACE(trace_os_emul, ("seek - out - status=%ld\n",
|
|
(long)args.status));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* memory */
|
|
|
|
static int
|
|
chirp_emul_claim(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
/* NOTE: the client interface claim routine is *very* different to
|
|
the "claim" method described in IEEE-1275 appendix A. The latter
|
|
uses real addresses while this uses virtual (effective)
|
|
addresses. */
|
|
struct claim_args {
|
|
/* in */
|
|
unsigned_cell virt;
|
|
unsigned_cell size;
|
|
unsigned_cell align;
|
|
/* out */
|
|
unsigned_cell baseaddr;
|
|
} args;
|
|
/* read the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args),
|
|
3 /*n_args*/, 1 /*n_returns*/,
|
|
data, processor, cia))
|
|
return -1;
|
|
TRACE(trace_os_emul, ("claim - in - virt=0x%lx size=%ld align=%d\n",
|
|
(unsigned long)args.virt,
|
|
(long int)args.size,
|
|
(int)args.align));
|
|
/* use the memory device to allocate (real) memory at the requested
|
|
address */
|
|
{
|
|
device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory");
|
|
unsigned_cell mem_in[3];
|
|
unsigned_cell mem_out[1];
|
|
mem_in[0] = args.align; /*top-of-stack*/
|
|
mem_in[1] = args.size;
|
|
mem_in[2] = args.virt;
|
|
if (device_instance_call_method(memory, "claim",
|
|
3, mem_in, 1, mem_out) < 0)
|
|
error("chirp: claim failed to allocate memory virt=0x%lx size=%ld align=%d",
|
|
(unsigned long)args.virt,
|
|
(long int)args.size,
|
|
(int)args.align);
|
|
args.baseaddr = mem_out[0];
|
|
}
|
|
/* if using virtual addresses, create a 1-1 map of this address space */
|
|
if (!data->real_mode) {
|
|
error("chirp: claim method does not support virtual mode");
|
|
}
|
|
/* return the base address */
|
|
TRACE(trace_os_emul, ("claim - out - baseaddr=0x%lx\n",
|
|
(unsigned long)args.baseaddr));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_release(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
/* NOTE: the client interface release routine is *very* different to
|
|
the "claim" method described in IEEE-1275 appendix A. The latter
|
|
uses real addresses while this uses virtual (effective)
|
|
addresses. */
|
|
struct claim_args {
|
|
/* in */
|
|
unsigned_cell virt;
|
|
unsigned_cell size;
|
|
/* out */
|
|
} args;
|
|
/* read the args */
|
|
if (chirp_read_t2h_args(&args, sizeof(args),
|
|
2 /*n_args*/, 0 /*n_returns*/,
|
|
data, processor, cia))
|
|
return -1;
|
|
TRACE(trace_os_emul, ("release - in - virt=0x%lx size=%ld\n",
|
|
(unsigned long)args.virt,
|
|
(long int)args.size));
|
|
/* use the memory device to release (real) memory at the requested
|
|
address */
|
|
{
|
|
device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory");
|
|
unsigned_cell mem_in[2];
|
|
mem_in[0] = args.size;
|
|
mem_in[1] = args.virt;
|
|
if (device_instance_call_method(memory, "release",
|
|
2, mem_in, 0, NULL) < 0)
|
|
error("chirp: claim failed to release memory virt=0x%lx size=%ld",
|
|
(unsigned long)args.virt,
|
|
(long int)args.size);
|
|
}
|
|
/* if using virtual addresses, remove the 1-1 map of this address space */
|
|
if (!data->real_mode) {
|
|
error("chirp: release method does not support virtual mode");
|
|
}
|
|
/* return the base address */
|
|
TRACE(trace_os_emul, ("release - out\n"));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Control transfer */
|
|
|
|
static int
|
|
chirp_emul_boot(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
/* unlike OpenFirmware this one can take an argument */
|
|
struct boot_args {
|
|
/*in*/
|
|
unsigned_cell bootspec;
|
|
/*out*/
|
|
} args;
|
|
char bootspec[1024];
|
|
/* read in the arguments */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia))
|
|
cpu_halt(processor, cia, was_exited, -1);
|
|
if (args.bootspec != 0)
|
|
emul_read_string(bootspec, args.bootspec, sizeof(bootspec),
|
|
processor, cia);
|
|
else
|
|
strcpy(bootspec, "(null)");
|
|
TRACE(trace_os_emul, ("boot - in bootspec=`%s'\n", bootspec));
|
|
/* just report this and exit */
|
|
printf_filtered("chrp: boot %s called, exiting.\n", bootspec);
|
|
cpu_halt(processor, cia, was_exited, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_enter(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
error("chirp: enter method not implemented\n");
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_exit(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
/* unlike OpenBoot this one can take an argument */
|
|
struct exit_args {
|
|
/*in*/
|
|
signed_cell status;
|
|
/*out*/
|
|
} args;
|
|
if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia))
|
|
cpu_halt(processor, cia, was_exited, -1);
|
|
cpu_halt(processor, cia, was_exited, args.status);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_chain(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
error("chirp: chain method not implemented\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* user interface */
|
|
|
|
static int
|
|
chirp_emul_interpret(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
error("chirp: interpret method not implemented\n");
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_set_callback(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
error("chirp: set_callback method not implemented\n");
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
chirp_emul_set_symbol_lookup(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
error("chirp: set_symbol_lookup method not implemented\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Time */
|
|
|
|
static int
|
|
chirp_emul_milliseconds(os_emul_data *data,
|
|
cpu *processor,
|
|
unsigned_word cia)
|
|
{
|
|
struct test_args {
|
|
/*in*/
|
|
/*out*/
|
|
unsigned_cell ms;
|
|
} args;
|
|
unsigned64 time;
|
|
/* read in the arguments */
|
|
if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
|
|
return -1;
|
|
/* make up a number */
|
|
time = event_queue_time(psim_event_queue(cpu_system(processor))) / 1000000;
|
|
args.ms = time;
|
|
/* write the arguments back out */
|
|
TRACE(trace_os_emul, ("milliseconds - out - ms=%ld\n",
|
|
(unsigned long)args.ms));
|
|
chirp_write_h2t_args(&args,
|
|
sizeof(args),
|
|
data,
|
|
processor, cia);
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
|
|
static chirp_services services[] = {
|
|
|
|
/* client interface */
|
|
{ "test", chirp_emul_test },
|
|
|
|
/* device tree */
|
|
{ "peer", chirp_emul_peer },
|
|
{ "child", chirp_emul_child },
|
|
{ "parent", chirp_emul_parent },
|
|
{ "instance-to-package", chirp_emul_instance_to_package },
|
|
{ "getproplen", chirp_emul_getproplen },
|
|
{ "getprop", chirp_emul_getprop },
|
|
{ "nextprop", chirp_emul_nextprop },
|
|
/* { "setprop", chirp_emul_setprop }, */
|
|
{ "canon", chirp_emul_canon },
|
|
{ "finddevice", chirp_emul_finddevice },
|
|
{ "instance-to-path", chirp_emul_instance_to_path },
|
|
{ "package-to-path", chirp_emul_package_to_path },
|
|
{ "call-method", chirp_emul_call_method },
|
|
|
|
/* device I/O */
|
|
{ "open", chirp_emul_open },
|
|
{ "close", chirp_emul_close },
|
|
{ "read", chirp_emul_read },
|
|
{ "write", chirp_emul_write },
|
|
{ "seek", chirp_emul_seek },
|
|
{ "write", chirp_emul_write },
|
|
|
|
/* memory */
|
|
{ "claim", chirp_emul_claim },
|
|
{ "release", chirp_emul_release },
|
|
|
|
/* control transfer */
|
|
{ "boot", chirp_emul_boot },
|
|
{ "enter", chirp_emul_enter },
|
|
{ "exit", chirp_emul_exit },
|
|
{ "chain", chirp_emul_chain },
|
|
|
|
/* user interface */
|
|
{ "interpret", chirp_emul_interpret },
|
|
{ "set_callback", chirp_emul_set_callback },
|
|
{ "set_symbol_lookup", chirp_emul_set_symbol_lookup },
|
|
|
|
/* time */
|
|
{ "milliseconds", chirp_emul_milliseconds },
|
|
|
|
{ 0, /* sentinal */ },
|
|
};
|
|
|
|
|
|
/* main handlers */
|
|
|
|
/* Any starting address greater than this is assumed to be an Chirp
|
|
rather than VEA */
|
|
|
|
#ifndef CHIRP_START_ADDRESS
|
|
#define CHIRP_START_ADDRESS 0x80000000
|
|
#endif
|
|
#ifndef CHIRP_LOAD_BASE
|
|
#define CHIRP_LOAD_BASE -1
|
|
#endif
|
|
|
|
|
|
typedef struct _chirp_note_desc {
|
|
signed32 real_mode;
|
|
signed32 real_base;
|
|
signed32 real_size;
|
|
signed32 virt_base;
|
|
signed32 virt_size;
|
|
signed32 load_base;
|
|
} chirp_note_desc;
|
|
|
|
typedef enum {
|
|
note_missing,
|
|
note_found,
|
|
note_correct,
|
|
} note_found_status;
|
|
typedef struct _chirp_note {
|
|
chirp_note_desc desc;
|
|
note_found_status found;
|
|
} chirp_note;
|
|
|
|
typedef struct _chirp_note_head {
|
|
unsigned32 namesz;
|
|
unsigned32 descsz;
|
|
unsigned32 type;
|
|
} chirp_note_head;
|
|
|
|
static void
|
|
map_over_chirp_note(bfd *image,
|
|
asection *sect,
|
|
PTR obj)
|
|
{
|
|
chirp_note *note = (chirp_note*)obj;
|
|
if (strcmp(sect->name, ".note") == 0) {
|
|
chirp_note_head head;
|
|
char name[16];
|
|
/* check the head */
|
|
if (!bfd_get_section_contents(image, sect,
|
|
&head, 0, sizeof(head)))
|
|
return;
|
|
head.namesz = bfd_get_32(image, (void*)&head.namesz);
|
|
head.descsz = bfd_get_32(image, (void*)&head.descsz);
|
|
head.type = bfd_get_32(image, (void*)&head.type);
|
|
if (head.type != 0x1275)
|
|
return;
|
|
/* check the name field */
|
|
if (head.namesz > sizeof(name)) {
|
|
error("chirp: note name too long (%d > %d)\n", (int)head.namesz, sizeof(name));
|
|
}
|
|
if (!bfd_get_section_contents(image, sect,
|
|
name, sizeof(head), head.namesz)) {
|
|
error("chirp: note name unreadable\n");
|
|
}
|
|
if (strcmp(name, "PowerPC") != 0) {
|
|
printf_filtered("chirp: note name (%s) not `PowerPC'\n", name);
|
|
}
|
|
/* check the size */
|
|
if (head.descsz == sizeof(note->desc) - sizeof(signed32)) {
|
|
sim_io_printf_filtered("chirp: note descriptor missing load-base\n");
|
|
}
|
|
else if (head.descsz != sizeof(note->desc)) {
|
|
sim_io_printf_filtered("chirp: note descriptor of wrong size\n");
|
|
note->found = note_found;
|
|
return;
|
|
}
|
|
note->found = note_correct;
|
|
/* get the contents */
|
|
if (!bfd_get_section_contents(image, sect,
|
|
¬e->desc, /* page align start */
|
|
((sizeof(head) + head.namesz) + 3) & ~3,
|
|
head.descsz)) {
|
|
error("chirp: note descriptor unreadable\n");
|
|
}
|
|
note->desc.real_mode = bfd_get_32(image, (void*)¬e->desc.real_mode);
|
|
note->desc.real_base = bfd_get_32(image, (void*)¬e->desc.real_base);
|
|
note->desc.real_size = bfd_get_32(image, (void*)¬e->desc.real_size);
|
|
note->desc.virt_base = bfd_get_32(image, (void*)¬e->desc.virt_base);
|
|
note->desc.virt_size = bfd_get_32(image, (void*)¬e->desc.virt_size);
|
|
if (head.descsz == sizeof(note->desc))
|
|
note->desc.load_base = bfd_get_32(image, (void*)¬e->desc.load_base);
|
|
else
|
|
note->desc.load_base = (signed32)-1;
|
|
}
|
|
}
|
|
|
|
|
|
static os_emul_data *
|
|
emul_chirp_create(device *root,
|
|
bfd *image,
|
|
const char *name)
|
|
{
|
|
os_emul_data *chirp;
|
|
device *node;
|
|
chirp_note note;
|
|
int i;
|
|
|
|
/* Sanity check that this really is the chosen emulation */
|
|
if (name == NULL && image == NULL)
|
|
return NULL;
|
|
if (name != NULL
|
|
&& strcmp(name, "ob") != 0
|
|
&& strcmp(name, "ieee1274") != 0
|
|
&& strcmp(name, "chrp") != 0
|
|
&& strcmp(name, "chirp") != 0
|
|
&& strcmp(name, "openboot") != 0)
|
|
return NULL;
|
|
|
|
/* look for an elf note section, enter its values into the device tree */
|
|
memset(¬e, 0, sizeof(note));
|
|
if (image != NULL)
|
|
bfd_map_over_sections(image, map_over_chirp_note, ¬e);
|
|
if (name == NULL && image != NULL && note.found == note_missing)
|
|
return NULL;
|
|
|
|
/* Assume that it is a chirp emulation */
|
|
|
|
chirp = ZALLOC(os_emul_data);
|
|
chirp->root = root;
|
|
chirp->services = services;
|
|
|
|
/* the root node */
|
|
tree_parse(root, "/name \"gpl,clayton");
|
|
|
|
/* default options */
|
|
emul_add_tree_options(root, image, "chirp", "oea",
|
|
0 /*oea-interrupt-prefix*/);
|
|
|
|
/* hardware */
|
|
emul_add_tree_hardware(root);
|
|
|
|
/* basic information */
|
|
chirp->memory_size
|
|
= tree_find_integer_property(root, "/openprom/options/oea-memory-size");
|
|
chirp->little_endian
|
|
= tree_find_boolean_property(root, "/options/little-endian?");
|
|
chirp->floating_point_available
|
|
= tree_find_boolean_property(root, "/openprom/options/floating-point?");
|
|
chirp->interrupt_prefix =
|
|
tree_find_integer_property(root, "/openprom/options/oea-interrupt-prefix");
|
|
|
|
|
|
/* Perform an interum layout of the openboot firmware in memory */
|
|
|
|
|
|
/* a page for firmware calls */
|
|
chirp->sizeof_code = 4096;
|
|
chirp->code_offset = 0x4000; /* possible space for interrupt table */
|
|
|
|
/* the stack */
|
|
chirp->sizeof_stack = 32 * 1024;
|
|
chirp->stack_offset = chirp->code_offset + chirp->sizeof_code;
|
|
|
|
/* the hash table */
|
|
if (!note.desc.real_mode) {
|
|
chirp->nr_page_table_entry_groups = (chirp->memory_size < 0x800000
|
|
? 1024 /* min allowed */
|
|
: (chirp->memory_size / 4096 / 2));
|
|
chirp->sizeof_htab = chirp->nr_page_table_entry_groups * 64;
|
|
}
|
|
chirp->htab_offset = chirp->stack_offset + chirp->sizeof_stack;
|
|
|
|
/* the actual amount of space needed */
|
|
chirp->real_size = chirp->htab_offset + chirp->sizeof_htab;
|
|
|
|
|
|
/* now go through and see if it fits in what is available */
|
|
|
|
|
|
/* resolve real-mode? */
|
|
if (note.found == note_correct)
|
|
chirp->real_mode = note.desc.real_mode;
|
|
else if (tree_find_property(root, "/options/real-mode?") != NULL)
|
|
chirp->real_mode = tree_find_boolean_property(root, "/options/real-mode?");
|
|
else
|
|
chirp->real_mode = 0;
|
|
if (tree_find_property(root, "/options/real-mode?") != NULL) {
|
|
if (!chirp->real_mode
|
|
!= !tree_find_boolean_property(root, "/options/real-mode?"))
|
|
error("chirp: /options/real-mode? conflicts with note section\n");
|
|
}
|
|
else
|
|
tree_parse(root, "/options/real-mode? %s",
|
|
chirp->real_mode ? "true" : "false");
|
|
|
|
/* resolve real-base */
|
|
if (note.found == note_correct
|
|
&& note.desc.real_base != (signed32)-1)
|
|
chirp->real_base = note.desc.real_base;
|
|
else if (tree_find_property(root, "/options/real-base") != NULL)
|
|
chirp->real_base = tree_find_integer_property(root, "/options/real-base");
|
|
else
|
|
chirp->real_base = chirp->memory_size - chirp->real_size;
|
|
if (tree_find_property(root, "/options/real-base") != NULL) {
|
|
if (chirp->real_base != tree_find_integer_property(root, "/options/real-base"))
|
|
error("chirp: /options/real-base conflicts with note section\n");
|
|
}
|
|
else
|
|
tree_parse(root, "/options/real-base 0x%lx",
|
|
(unsigned long)chirp->real_base);
|
|
|
|
/* resolve real-size */
|
|
if (note.found == note_correct
|
|
&& note.desc.real_size != (signed32)-1
|
|
&& note.desc.real_size != 0
|
|
&& chirp->real_size > note.desc.real_size)
|
|
error("chirp: insufficient physical memory for firmware\n");
|
|
if (tree_find_property(root, "/options/real-size") != NULL) {
|
|
if (chirp->real_size > tree_find_integer_property(root, "/options/real-size"))
|
|
error("chirp: /options/real-size conflicts with note section\n");
|
|
}
|
|
else
|
|
tree_parse(root, "/options/real-size 0x%lx",
|
|
(unsigned long)chirp->real_size);
|
|
|
|
/* resolve virt-base */
|
|
if (chirp->real_mode)
|
|
chirp->virt_base = chirp->real_base;
|
|
else if (note.found == note_correct && note.desc.virt_base != -1)
|
|
chirp->virt_base = note.desc.virt_base;
|
|
else if (tree_find_property(root, "/options/virt-base") != NULL)
|
|
chirp->virt_base = tree_find_integer_property(root, "/options/virt-base");
|
|
else
|
|
chirp->virt_base = CHIRP_START_ADDRESS;
|
|
if (tree_find_property(root, "/options/virt-base") != NULL) {
|
|
unsigned_word virt_base = tree_find_integer_property(root, "/options/virt-base");
|
|
if (virt_base != -1 && chirp->virt_base != virt_base)
|
|
error("chirp: /options/virt-base conflicts with note section\n");
|
|
}
|
|
else
|
|
tree_parse(root, "/options/virt-base 0x%lx",
|
|
chirp->real_mode ? -1 : (unsigned long)chirp->virt_base);
|
|
|
|
/* resolve virt-size */
|
|
chirp->virt_size = chirp->real_size;
|
|
if (note.found == note_correct
|
|
&& note.desc.virt_size != (signed32)-1
|
|
&& note.desc.virt_size != 0
|
|
&& !chirp->real_mode
|
|
&& chirp->virt_size > note.desc.virt_size)
|
|
error("chirp: insufficent virtual memory for firmware\n");
|
|
if (tree_find_property(root, "/options/virt-size") != NULL) {
|
|
if (chirp->virt_size > tree_find_integer_property(root, "/options/virt-size"))
|
|
error("chirp: /options/virt-size conflicts with note section\n");
|
|
}
|
|
else
|
|
tree_parse(root, "/options/virt-size 0x%lx",
|
|
chirp->real_mode ? -1 : (unsigned long)chirp->virt_size);
|
|
|
|
/* resolve load-base */
|
|
if (note.found == note_correct
|
|
&& note.desc.load_base != (signed32)-1)
|
|
chirp->load_base = note.desc.load_base;
|
|
else if (tree_find_property(root, "/options/load-base") != NULL)
|
|
chirp->load_base = tree_find_integer_property(root, "/options/load-base");
|
|
else
|
|
chirp->load_base = CHIRP_LOAD_BASE;
|
|
if (tree_find_property(root, "/options/load-base") != NULL) {
|
|
if (chirp->load_base != tree_find_integer_property(root, "/options/load-base"))
|
|
error("chirp: /options/load-base conflicts with note section\n");
|
|
}
|
|
else
|
|
tree_parse(root, "/options/load-base 0x%lx",
|
|
(unsigned long)chirp->load_base);
|
|
|
|
/* now adjust the preliminary firmware addresses to final values */
|
|
chirp->code_ra = chirp->code_offset + chirp->real_base;
|
|
chirp->stack_ra = chirp->stack_offset + chirp->real_base;
|
|
chirp->htab_ra = chirp->htab_offset + chirp->real_base;
|
|
|
|
/* the virtual addresses. In real mode these are real addresses. */
|
|
|
|
chirp->code_va = chirp->code_offset + chirp->virt_base;
|
|
chirp->stack_va = chirp->stack_offset + chirp->virt_base;
|
|
chirp->htab_va = chirp->htab_offset + chirp->virt_base;
|
|
|
|
chirp->code_client_va = chirp->code_va;
|
|
chirp->code_client_ra = chirp->code_ra;
|
|
|
|
chirp->code_callback_va = chirp->code_client_va + 16;
|
|
chirp->code_callback_ra = chirp->code_client_ra + 16;
|
|
|
|
chirp->code_loop_va = chirp->code_callback_va + 16;
|
|
chirp->code_loop_ra = chirp->code_callback_ra + 16;
|
|
|
|
/* initialization */
|
|
|
|
tree_parse(root, "/openprom/init");
|
|
tree_parse(root, "/openprom/init/register");
|
|
tree_parse(root, "/openprom/init/register/0.pc 0x%lx",
|
|
(unsigned long)bfd_get_start_address(image));
|
|
tree_parse(root, "/openprom/init/register/pc 0x%lx",
|
|
(unsigned long)chirp->code_loop_va);
|
|
tree_parse(root, "/openprom/init/register/msr 0x%x",
|
|
(msr_machine_check_enable
|
|
| (chirp->real_mode
|
|
? 0
|
|
: (msr_instruction_relocate
|
|
| msr_data_relocate))
|
|
| (chirp->little_endian
|
|
? (msr_little_endian_mode
|
|
| msr_interrupt_little_endian_mode)
|
|
: 0)
|
|
| (chirp->floating_point_available
|
|
? msr_floating_point_available
|
|
: 0)
|
|
| (chirp->interrupt_prefix
|
|
? msr_interrupt_prefix
|
|
: 0)
|
|
));
|
|
tree_parse(root, "/openprom/init/register/sdr1 0x%lx",
|
|
(unsigned long)(chirp->htab_ra
|
|
| MASK32(16, 22)
|
|
| ((chirp->sizeof_htab - 1) >> 16)));
|
|
/* make certain that the segment registers map straight through */
|
|
for (i = 0; i < 16; i++) {
|
|
tree_parse(root, "/openprom/init/register/sr%d 0x%lx",
|
|
i, (unsigned long)i);
|
|
}
|
|
|
|
/* establish an initial state for all processors */
|
|
|
|
|
|
/* the client interface address */
|
|
tree_parse(root, "/openprom/init/register/r5 0x%lx",
|
|
(unsigned long)chirp->code_client_va);
|
|
/* a stack */
|
|
tree_parse(root, "/openprom/init/register/sp 0x%lx",
|
|
(unsigned long)(chirp->stack_va + chirp->sizeof_stack - 16));
|
|
/* in chrp mode any arguments end up being concatinated */
|
|
tree_parse(root, "/openprom/init/stack/stack-type chirp");
|
|
|
|
|
|
/* client interface - emul-call followed by return instruction */
|
|
|
|
|
|
node = tree_parse(root, "/openprom/init/data@0x%lx",
|
|
(unsigned long)chirp->code_client_ra);
|
|
tree_parse(node, "./psim,description \"client-interface instruction");
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)chirp->code_client_ra);
|
|
tree_parse(node, "./data 0x%lx",
|
|
(unsigned long)emul_call_instruction);
|
|
|
|
node = tree_parse(root, "/openprom/init/data@0x%lx",
|
|
(unsigned long)(chirp->code_client_ra + 4));
|
|
tree_parse(node, "./psim,description \"client-interface return instruction");
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)(chirp->code_client_ra + 4));
|
|
tree_parse(node, "./data 0x%lx",
|
|
(unsigned long)emul_blr_instruction);
|
|
|
|
|
|
/* return address for client callbacks - an emul-call instruction
|
|
that is again followed by a return instruction */
|
|
|
|
|
|
node = tree_parse(root, "/openprom/init/data@0x%lx",
|
|
(unsigned long)chirp->code_callback_ra);
|
|
tree_parse(node, "./psim,description \"client-callback instruction");
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)chirp->code_callback_ra);
|
|
tree_parse(node, "./data 0x%lx",
|
|
(unsigned long)emul_call_instruction);
|
|
|
|
node = tree_parse(root, "/openprom/init/data@0x%lx",
|
|
(unsigned long)(chirp->code_callback_ra + 4));
|
|
tree_parse(node, "./psim,description \"client-callback return instruction");
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)(chirp->code_callback_ra + 4));
|
|
tree_parse(node, "./data 0x%lx",
|
|
(unsigned long)emul_blr_instruction);
|
|
|
|
/* loop to keep other processors busy */
|
|
|
|
node = tree_parse(root, "/openprom/init/data@0x%lx",
|
|
(unsigned long)chirp->code_loop_ra);
|
|
tree_parse(node, "./psim,description \"processor busy loop");
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)chirp->code_loop_ra);
|
|
tree_parse(node, "./data 0x%lx",
|
|
(unsigned long)emul_loop_instruction);
|
|
|
|
/* hash table */
|
|
|
|
/* create a hash table */
|
|
|
|
if (!chirp->real_mode) {
|
|
node = tree_parse(root, "/openprom/init/htab@0x%lx",
|
|
(unsigned long)chirp->htab_ra);
|
|
tree_parse(node, "./claim 0");
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)chirp->htab_ra);
|
|
tree_parse(node, "./nr-bytes 0x%lx",
|
|
(unsigned long)chirp->sizeof_htab);
|
|
}
|
|
|
|
/* map in the stack */
|
|
|
|
if (!chirp->real_mode) {
|
|
node = tree_parse(root, "/openprom/init/htab/pte@0x%lx",
|
|
(unsigned long)chirp->stack_ra);
|
|
tree_parse(node, "./psim,description \"map in the stack");
|
|
tree_parse(node, "./claim 1");
|
|
tree_parse(node, "./virtual-address 0x%lx",
|
|
(unsigned long)chirp->stack_va);
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)chirp->stack_ra);
|
|
tree_parse(node, "./nr-bytes 0x%lx",
|
|
(unsigned long)chirp->sizeof_stack);
|
|
tree_parse(node, "./wimg %d", 0x7);
|
|
tree_parse(node, "./pp %d", 0x2);
|
|
}
|
|
|
|
/* map in the chrp openboot callback code */
|
|
|
|
if (!chirp->real_mode) {
|
|
node = tree_parse(root, "/openprom/init/htab/pte@0x%lx",
|
|
(unsigned long)chirp->code_ra);
|
|
tree_parse(node, "./psim,description \"map in chrp openboot callback code");
|
|
tree_parse(node, "./claim 1");
|
|
tree_parse(node, "./virtual-address 0x%lx",
|
|
(unsigned long)chirp->code_va);
|
|
tree_parse(node, "./real-address 0x%lx",
|
|
(unsigned long)chirp->code_ra);
|
|
tree_parse(node, "./nr-bytes 0x%lx",
|
|
(unsigned long)chirp->sizeof_code);
|
|
tree_parse(node, "./wimg %d", 0x7);
|
|
tree_parse(node, "./pp %d", 0x2);
|
|
}
|
|
|
|
/* map in the program to run */
|
|
|
|
if (chirp->real_mode) {
|
|
node = tree_parse(node, "/openprom/init/load-binary");
|
|
tree_parse(node, "./psim,description \"load the binary");
|
|
tree_parse(node, "./file-name %s", bfd_get_filename(image));
|
|
tree_parse(node, "./claim 1");
|
|
}
|
|
else {
|
|
node = tree_parse(root, "/openprom/init/htab/pte@0x%lx",
|
|
(unsigned long)chirp->load_base);
|
|
tree_parse(node, "./psim,description \"load & map the binary");
|
|
tree_parse(node, "./claim 1");
|
|
tree_parse(node, "./file-name \"%s", bfd_get_filename(image));
|
|
tree_parse(node, "./wimg %d", 0x7);
|
|
tree_parse(node, "./pp %d", 0x2);
|
|
}
|
|
|
|
/* map in the interrupt vectors */
|
|
|
|
if (!chirp->real_mode) {
|
|
node = tree_parse(root, "/openprom/init/htab/pte@0x0");
|
|
tree_parse(node, "./psim,description \"map in interrupt vectors");
|
|
tree_parse(node, "./virtual-address 0x0");
|
|
tree_parse(node, "./real-address 0x0");
|
|
tree_parse(node, "./nr-bytes 0x3000");
|
|
tree_parse(node, "./wimg %d", 0x7);
|
|
tree_parse(node, "./pp %d", 0x2);
|
|
}
|
|
|
|
return chirp;
|
|
}
|
|
|
|
static void
|
|
emul_chirp_init(os_emul_data *emul_data,
|
|
int nr_cpus)
|
|
{
|
|
emul_data->state = serving;
|
|
}
|
|
|
|
static int
|
|
emul_chirp_instruction_call(cpu *processor,
|
|
unsigned_word cia,
|
|
unsigned_word ra,
|
|
os_emul_data *emul_data)
|
|
{
|
|
unsigned_word service_name_addr;
|
|
unsigned_word result;
|
|
char service_buf[32];
|
|
char *service_name;
|
|
chirp_services *service;
|
|
|
|
switch (emul_data->state) {
|
|
|
|
case serving:
|
|
/* we are waiting on an OpenBoot request from the client program
|
|
via the client interface */
|
|
if (cia != emul_data->code_client_va)
|
|
return 0;
|
|
emul_data->return_address = LR;
|
|
emul_data->arguments = cpu_registers(processor)->gpr[3];
|
|
/* try to determine what to do */
|
|
service_name_addr = emul_read_word(cpu_registers(processor)->gpr[3],
|
|
processor, cia);
|
|
service_name = emul_read_string(service_buf, service_name_addr,
|
|
sizeof(service_buf), processor, cia);
|
|
emul_data->n_args = emul_read_word(emul_data->arguments + sizeof(unsigned_cell),
|
|
processor, cia);
|
|
emul_data->n_returns = emul_read_word(emul_data->arguments + 2 * sizeof(unsigned_cell),
|
|
processor, cia);
|
|
/* verify what was passed */
|
|
if (service_name_addr == 0
|
|
|| service_name == NULL) {
|
|
error("OpenFirmware called with invalid (NULL) service name from 0x%lx with args 0x%lx\n",
|
|
(unsigned long)emul_data->return_address,
|
|
(unsigned long)emul_data->arguments);
|
|
}
|
|
if (emul_data->n_args > 6) { /* See iee1275 requirements on nr returns */
|
|
error("OpenFirmware service %s called from 0x%lx with args 0x%lx, too many args (%d)\n",
|
|
(unsigned long)emul_data->return_address,
|
|
(unsigned long)emul_data->arguments,
|
|
emul_data->n_returns);
|
|
}
|
|
if (emul_data->n_returns > 6) {
|
|
error("OpenFirmware service %s called from 0x%lx with args 0x%lx, with too many returns (%d)\n",
|
|
(unsigned long)emul_data->return_address,
|
|
(unsigned long)emul_data->arguments,
|
|
emul_data->n_args);
|
|
}
|
|
/* look it up */
|
|
TRACE(trace_os_emul, ("%s called from 0x%lx with args 0x%lx\n",
|
|
service_name,
|
|
(unsigned long)emul_data->return_address,
|
|
(unsigned long)emul_data->arguments));
|
|
service = services;
|
|
while (service->name != NULL && strcmp(service->name, service_name) != 0)
|
|
service++;
|
|
/* found or not? */
|
|
if (service->name == NULL) {
|
|
error("OpenBoot service `%s' not found\n", service_name);
|
|
TRACE(trace_os_emul, ("%s not found\n", service_name));
|
|
cpu_registers(processor)->gpr[3] = -1;
|
|
}
|
|
else {
|
|
emul_data->service = service;
|
|
/* call upon it */
|
|
result = service->handler(emul_data, processor, cia);
|
|
if (result != 0)
|
|
TRACE(trace_os_emul, ("%s aborted with %ld\n", service_name, (long)result));
|
|
cpu_registers(processor)->gpr[3] = result;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error("emul_chirp_instruction_call() unknown internal state\n");
|
|
result = -1;
|
|
break;
|
|
|
|
}
|
|
|
|
/* return to caller - instruction following this is a function return */
|
|
return 1;
|
|
}
|
|
|
|
const os_emul emul_chirp = {
|
|
"chirp",
|
|
emul_chirp_create,
|
|
emul_chirp_init,
|
|
NULL, /*system_call*/
|
|
emul_chirp_instruction_call,
|
|
0 /*data*/
|
|
};
|
|
|
|
#endif
|