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90ec4b7f6c
of GRUB_IEEE1275_FLAG_FORCE_CLAIM. * grub-core/loader/powerpc/ieee1275/linux.c (grub_linux_claimmap_iterate): Handle GRUB_IEEE1275_FLAG_FORCE_CLAIM.
115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2010 Free Software Foundation, Inc.
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*
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* GRUB 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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*
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* GRUB 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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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/relocator.h>
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#include <grub/relocator_private.h>
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#include <grub/memory.h>
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#include <grub/ieee1275/ieee1275.h>
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/* Helper for grub_relocator_firmware_get_max_events. */
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static int
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count (grub_uint64_t addr __attribute__ ((unused)),
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grub_uint64_t len __attribute__ ((unused)),
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grub_memory_type_t type __attribute__ ((unused)), void *data)
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{
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int *counter = data;
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(*counter)++;
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return 0;
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}
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unsigned
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grub_relocator_firmware_get_max_events (void)
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{
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int counter = 0;
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if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_FORCE_CLAIM))
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return 0;
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grub_machine_mmap_iterate (count, &counter);
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return 2 * counter;
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}
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/* Context for grub_relocator_firmware_fill_events. */
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struct grub_relocator_firmware_fill_events_ctx
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{
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struct grub_relocator_mmap_event *events;
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int counter;
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};
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/* Helper for grub_relocator_firmware_fill_events. */
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static int
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grub_relocator_firmware_fill_events_iter (grub_uint64_t addr,
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grub_uint64_t len,
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grub_memory_type_t type, void *data)
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{
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struct grub_relocator_firmware_fill_events_ctx *ctx = data;
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if (type != GRUB_MEMORY_AVAILABLE)
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return 0;
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if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_NO_PRE1_5M_CLAIM))
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{
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if (addr + len <= 0x180000)
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return 0;
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if (addr < 0x180000)
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{
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len = addr + len - 0x180000;
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addr = 0x180000;
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}
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}
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ctx->events[ctx->counter].type = REG_FIRMWARE_START;
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ctx->events[ctx->counter].pos = addr;
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ctx->counter++;
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ctx->events[ctx->counter].type = REG_FIRMWARE_END;
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ctx->events[ctx->counter].pos = addr + len;
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ctx->counter++;
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return 0;
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}
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unsigned
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grub_relocator_firmware_fill_events (struct grub_relocator_mmap_event *events)
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{
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struct grub_relocator_firmware_fill_events_ctx ctx = {
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.events = events,
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.counter = 0
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};
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if (grub_ieee1275_test_flag (GRUB_IEEE1275_FLAG_FORCE_CLAIM))
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return 0;
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grub_machine_mmap_iterate (grub_relocator_firmware_fill_events_iter, &ctx);
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return ctx.counter;
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}
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int
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grub_relocator_firmware_alloc_region (grub_addr_t start, grub_size_t size)
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{
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grub_err_t err;
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err = grub_claimmap (start, size);
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grub_errno = 0;
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return (err == 0);
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}
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void
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grub_relocator_firmware_free_region (grub_addr_t start, grub_size_t size)
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{
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grub_ieee1275_release (start, size);
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}
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