716738a6b8
There are some boards that do a significant amount of work after cache-as-ram is torn down but before ramstage is loaded. For example, using vboot to verify the ramstage is one such operation. However, there are pieces of code that are executed that reference global variables that are linked in the cache-as-ram region. If those variables are referenced after cache-as-ram is torn down then the values observed will most likely be incorrect. Therefore provide a Kconfig option to select cache-as-ram migration to memory using cbmem. This option is named CAR_MIGRATION. When enabled, the address of cache-as-ram variables may be obtained dynamically. Additionally, when cache-as-ram migration occurs the cache-as-ram data region for global variables is copied into cbmem. There are also automatic callbacks for other modules to perform their own migration, if necessary. Change-Id: I2e77219647c2bd2b1aa845b262be3b2543f1fcb7 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/3232 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2013 Google, Inc.
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*
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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; version 2 of the License.
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*
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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 wacbmem_entryanty 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <console/console.h>
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#include <cbmem.h>
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#include <stdlib.h>
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static struct cbmem_id_to_name {
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u32 id;
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const char *name;
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} cbmem_ids[] = {
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{ CBMEM_ID_FREESPACE, "FREE SPACE " },
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{ CBMEM_ID_GDT, "GDT " },
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{ CBMEM_ID_ACPI, "ACPI " },
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{ CBMEM_ID_CBTABLE, "COREBOOT " },
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{ CBMEM_ID_PIRQ, "IRQ TABLE " },
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{ CBMEM_ID_MPTABLE, "SMP TABLE " },
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{ CBMEM_ID_RESUME, "ACPI RESUME" },
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{ CBMEM_ID_RESUME_SCRATCH, "ACPISCRATCH" },
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{ CBMEM_ID_ACPI_GNVS, "ACPI GNVS " },
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{ CBMEM_ID_ACPI_GNVS_PTR, "GNVS PTR " },
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{ CBMEM_ID_SMBIOS, "SMBIOS " },
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{ CBMEM_ID_TIMESTAMP, "TIME STAMP " },
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{ CBMEM_ID_MRCDATA, "MRC DATA " },
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{ CBMEM_ID_CONSOLE, "CONSOLE " },
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{ CBMEM_ID_ELOG, "ELOG " },
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{ CBMEM_ID_COVERAGE, "COVERAGE " },
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{ CBMEM_ID_ROMSTAGE_INFO, "ROMSTAGE " },
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{ CBMEM_ID_ROMSTAGE_RAM_STACK, "ROMSTG STCK" },
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{ CBMEM_ID_RAMSTAGE, "RAMSTAGE " },
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{ CBMEM_ID_RAMSTAGE_CACHE, "RAMSTAGE $ " },
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{ CBMEM_ID_ROOT, "CBMEM ROOT " },
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{ CBMEM_ID_VBOOT_HANDOFF, "VBOOT " },
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{ CBMEM_ID_CAR_GLOBALS, "CAR GLOBALS" },
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};
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void cbmem_print_entry(int n, u32 id, u64 base, u64 size)
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{
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int i;
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const char *name;
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name = NULL;
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for (i = 0; i < ARRAY_SIZE(cbmem_ids); i++) {
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if (cbmem_ids[i].id == id) {
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name = cbmem_ids[i].name;
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break;
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}
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}
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if (name == NULL)
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printk(BIOS_DEBUG, "%08x ", id);
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else
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printk(BIOS_DEBUG, "%s", name);
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printk(BIOS_DEBUG, "%2d. ", n);
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printk(BIOS_DEBUG, "%08llx ", base);
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printk(BIOS_DEBUG, "%08llx\n", size);
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}
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