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97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/* Handle cache related addresses.
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Copyright (C) 1996-2020 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions and Mike Frysinger.
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This file is part of the GNU simulators.
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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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#include "config.h"
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#include "sim-main.h"
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#include "hw-main.h"
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#include "dv-m32r_cache.h"
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struct m32r_cache_hw
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{
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};
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static unsigned
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cris_io_write_buffer (struct hw *me, const void *source,
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int space, address_word addr, unsigned nr_bytes)
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{
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SIM_DESC sd = hw_system (me);
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#if WITH_SCACHE
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/* MSPR support is deprecated but is kept in for upward compatibility
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with existing overlay support. */
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switch (addr)
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{
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case MSPR_ADDR:
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if ((*(const char *) source & MSPR_PURGE) != 0)
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scache_flush (sd);
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break;
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case MCCR_ADDR:
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if ((*(const char *) source & MCCR_CP) != 0)
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scache_flush (sd);
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break;
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}
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#endif
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return nr_bytes;
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}
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static void
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attach_regs (struct hw *me, struct m32r_cache_hw *hw)
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{
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address_word attach_address;
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int attach_space;
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unsigned attach_size;
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reg_property_spec reg;
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if (hw_find_property (me, "reg") == NULL)
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hw_abort (me, "Missing \"reg\" property");
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if (!hw_find_reg_array_property (me, "reg", 0, ®))
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hw_abort (me, "\"reg\" property must contain three addr/size entries");
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hw_unit_address_to_attach_address (hw_parent (me),
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®.address,
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&attach_space, &attach_address, me);
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hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me);
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hw_attach_address (hw_parent (me),
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0, attach_space, attach_address, attach_size, me);
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}
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static void
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m32r_cache_finish (struct hw *me)
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{
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struct m32r_cache_hw *hw;
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hw = HW_ZALLOC (me, struct m32r_cache_hw);
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set_hw_data (me, hw);
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set_hw_io_write_buffer (me, cris_io_write_buffer);
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attach_regs (me, hw);
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}
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const struct hw_descriptor dv_m32r_cache_descriptor[] = {
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{ "m32r_cache", m32r_cache_finish, },
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{ NULL },
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};
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