86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
|
/*
|
||
|
|
* This file is part of the libpayload project.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 Advanced Micro Devices, Inc.
|
||
|
|
* Copyright (C) 2009 coresystems GmbH
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <libpayload-config.h>
|
||
|
|
#include <libpayload.h>
|
||
|
|
#include <coreboot_tables.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Some of this is x86 specific, and the rest of it is generic. Right now,
|
||
|
|
* since we only support x86, we'll avoid trying to make lots of infrastructure
|
||
|
|
* we don't need. If in the future, we want to use coreboot on some other
|
||
|
|
* architecture, then take out the generic parsing code and move it elsewhere.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* === Parsing code === */
|
||
|
|
/* This is the generic parsing code. */
|
||
|
|
|
||
|
|
static void cb_parse_x86_rom_var_mtrr(void *ptr, struct sysinfo_t *info)
|
||
|
|
{
|
||
|
|
struct cb_x86_rom_mtrr *rom_mtrr = ptr;
|
||
|
|
info->x86_rom_var_mtrr_index = rom_mtrr->index;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void cb_parse_mrc_cache(void *ptr, struct sysinfo_t *info)
|
||
|
|
{
|
||
|
|
info->mrc_cache = get_cbmem_ptr(ptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
int cb_parse_arch_specific(struct cb_record *rec, struct sysinfo_t *info)
|
||
|
|
{
|
||
|
|
switch(rec->tag) {
|
||
|
|
case CB_TAG_X86_ROM_MTRR:
|
||
|
|
cb_parse_x86_rom_var_mtrr(rec, info);
|
||
|
|
break;
|
||
|
|
case CB_TAG_MRC_CACHE:
|
||
|
|
cb_parse_mrc_cache(rec, info);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
int get_coreboot_info(struct sysinfo_t *info)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
/* Ensure the variable range MTRR index covering the ROM is set to
|
||
|
|
* an invalid value. */
|
||
|
|
info->x86_rom_var_mtrr_index = -1;
|
||
|
|
|
||
|
|
ret = cb_parse_header(phys_to_virt(0x00000000), 0x1000, info);
|
||
|
|
|
||
|
|
if (ret)
|
||
|
|
ret = cb_parse_header(phys_to_virt(0x000f0000), 0x1000, info);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|