291 lines
7.9 KiB
C
291 lines
7.9 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_memory(void *ptr, struct sysinfo_t *info)
|
|
{
|
|
struct cb_memory *mem = ptr;
|
|
int count = MEM_RANGE_COUNT(mem);
|
|
int i;
|
|
|
|
if (count > SYSINFO_MAX_MEM_RANGES)
|
|
count = SYSINFO_MAX_MEM_RANGES;
|
|
|
|
info->n_memranges = 0;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
struct cb_memory_range *range = MEM_RANGE_PTR(mem, i);
|
|
|
|
#ifdef CONFIG_MEMMAP_RAM_ONLY
|
|
if (range->type != CB_MEM_RAM)
|
|
continue;
|
|
#endif
|
|
|
|
info->memrange[info->n_memranges].base =
|
|
cb_unpack64(range->start);
|
|
|
|
info->memrange[info->n_memranges].size =
|
|
cb_unpack64(range->size);
|
|
|
|
info->memrange[info->n_memranges].type = range->type;
|
|
|
|
info->n_memranges++;
|
|
}
|
|
}
|
|
|
|
static void cb_parse_serial(void *ptr, struct sysinfo_t *info)
|
|
{
|
|
info->serial = ((struct cb_serial *)ptr);
|
|
}
|
|
|
|
#ifdef CONFIG_CHROMEOS
|
|
static void cb_parse_vbnv(unsigned char *ptr, struct sysinfo_t *info)
|
|
{
|
|
struct cb_vbnv *vbnv = (struct cb_vbnv *)ptr;
|
|
|
|
info->vbnv_start = vbnv->vbnv_start;
|
|
info->vbnv_size = vbnv->vbnv_size;
|
|
}
|
|
|
|
static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info)
|
|
{
|
|
int i;
|
|
struct cb_gpios *gpios = (struct cb_gpios *)ptr;
|
|
|
|
info->num_gpios = (gpios->count < SYSINFO_MAX_GPIOS) ?
|
|
(gpios->count) : SYSINFO_MAX_GPIOS;
|
|
|
|
for (i = 0; i < info->num_gpios; i++)
|
|
info->gpios[i] = gpios->gpios[i];
|
|
}
|
|
|
|
static void cb_parse_vdat(unsigned char *ptr, struct sysinfo_t *info)
|
|
{
|
|
struct cb_vdat *vdat = (struct cb_vdat *) ptr;
|
|
|
|
info->vdat_addr = phys_to_virt(vdat->vdat_addr);
|
|
info->vdat_size = vdat->vdat_size;
|
|
}
|
|
#endif
|
|
|
|
static void cb_parse_tstamp(unsigned char *ptr, struct sysinfo_t *info)
|
|
{
|
|
struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
|
|
info->tstamp_table = phys_to_virt(cbmem->cbmem_tab);
|
|
}
|
|
|
|
static void cb_parse_cbmem_cons(unsigned char *ptr, struct sysinfo_t *info)
|
|
{
|
|
struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
|
|
info->cbmem_cons = phys_to_virt(cbmem->cbmem_tab);
|
|
}
|
|
|
|
static void cb_parse_mrc_cache(unsigned char *ptr, struct sysinfo_t *info)
|
|
{
|
|
struct cb_cbmem_tab *const cbmem = (struct cb_cbmem_tab *)ptr;
|
|
info->mrc_cache = phys_to_virt(cbmem->cbmem_tab);
|
|
}
|
|
|
|
#ifdef CONFIG_NVRAM
|
|
static void cb_parse_optiontable(void *ptr, struct sysinfo_t *info)
|
|
{
|
|
info->option_table = ptr;
|
|
}
|
|
|
|
static void cb_parse_checksum(void *ptr, struct sysinfo_t *info)
|
|
{
|
|
struct cb_cmos_checksum *cmos_cksum = ptr;
|
|
info->cmos_range_start = cmos_cksum->range_start;
|
|
info->cmos_range_end = cmos_cksum->range_end;
|
|
info->cmos_checksum_location = cmos_cksum->location;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_COREBOOT_VIDEO_CONSOLE
|
|
static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info)
|
|
{
|
|
info->framebuffer = ptr;
|
|
}
|
|
#endif
|
|
|
|
static void cb_parse_string(unsigned char *ptr, char **info)
|
|
{
|
|
*info = (char *)phys_to_virt(((struct cb_string *)ptr)->string);
|
|
}
|
|
|
|
static int cb_parse_header(void *addr, int len, struct sysinfo_t *info)
|
|
{
|
|
struct cb_header *header;
|
|
unsigned char *ptr = addr;
|
|
void *forward;
|
|
int i;
|
|
|
|
for (i = 0; i < len; i += 16, ptr += 16) {
|
|
header = (struct cb_header *)ptr;
|
|
if (!strncmp((const char *)header->signature, "LBIO", 4))
|
|
break;
|
|
}
|
|
|
|
/* We walked the entire space and didn't find anything. */
|
|
if (i >= len)
|
|
return -1;
|
|
|
|
if (!header->table_bytes)
|
|
return 0;
|
|
|
|
/* Make sure the checksums match. */
|
|
if (ipchksum((u16 *) header, sizeof(*header)) != 0)
|
|
return -1;
|
|
|
|
if (ipchksum((u16 *) (ptr + sizeof(*header)),
|
|
header->table_bytes) != header->table_checksum)
|
|
return -1;
|
|
|
|
info->header = header;
|
|
|
|
/* Now, walk the tables. */
|
|
ptr += header->header_bytes;
|
|
|
|
for (i = 0; i < header->table_entries; i++) {
|
|
struct cb_record *rec = (struct cb_record *)ptr;
|
|
|
|
/* We only care about a few tags here (maybe more later). */
|
|
switch (rec->tag) {
|
|
case CB_TAG_FORWARD:
|
|
forward = phys_to_virt((void *)(unsigned long)((struct cb_forward *)rec)->forward);
|
|
return cb_parse_header(forward, len, info);
|
|
continue;
|
|
case CB_TAG_MEMORY:
|
|
cb_parse_memory(ptr, info);
|
|
break;
|
|
case CB_TAG_SERIAL:
|
|
cb_parse_serial(ptr, info);
|
|
break;
|
|
case CB_TAG_VERSION:
|
|
cb_parse_string(ptr, &info->cb_version);
|
|
break;
|
|
case CB_TAG_EXTRA_VERSION:
|
|
cb_parse_string(ptr, &info->extra_version);
|
|
break;
|
|
case CB_TAG_BUILD:
|
|
cb_parse_string(ptr, &info->build);
|
|
break;
|
|
case CB_TAG_COMPILE_TIME:
|
|
cb_parse_string(ptr, &info->compile_time);
|
|
break;
|
|
case CB_TAG_COMPILE_BY:
|
|
cb_parse_string(ptr, &info->compile_by);
|
|
break;
|
|
case CB_TAG_COMPILE_HOST:
|
|
cb_parse_string(ptr, &info->compile_host);
|
|
break;
|
|
case CB_TAG_COMPILE_DOMAIN:
|
|
cb_parse_string(ptr, &info->compile_domain);
|
|
break;
|
|
case CB_TAG_COMPILER:
|
|
cb_parse_string(ptr, &info->compiler);
|
|
break;
|
|
case CB_TAG_LINKER:
|
|
cb_parse_string(ptr, &info->linker);
|
|
break;
|
|
case CB_TAG_ASSEMBLER:
|
|
cb_parse_string(ptr, &info->assembler);
|
|
break;
|
|
#ifdef CONFIG_NVRAM
|
|
case CB_TAG_CMOS_OPTION_TABLE:
|
|
cb_parse_optiontable(ptr, info);
|
|
break;
|
|
case CB_TAG_OPTION_CHECKSUM:
|
|
cb_parse_checksum(ptr, info);
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_COREBOOT_VIDEO_CONSOLE
|
|
// FIXME we should warn on serial if coreboot set up a
|
|
// framebuffer buf the payload does not know about it.
|
|
case CB_TAG_FRAMEBUFFER:
|
|
cb_parse_framebuffer(ptr, info);
|
|
break;
|
|
#endif
|
|
case CB_TAG_MAINBOARD:
|
|
info->mainboard = (struct cb_mainboard *)ptr;
|
|
#ifdef CONFIG_CHROMEOS
|
|
case CB_TAG_GPIO:
|
|
cb_parse_gpios(ptr, info);
|
|
break;
|
|
case CB_TAG_VDAT:
|
|
cb_parse_vdat(ptr, info);
|
|
break;
|
|
case CB_TAG_VBNV:
|
|
cb_parse_vbnv(ptr, info);
|
|
break;
|
|
#endif
|
|
case CB_TAG_TIMESTAMPS:
|
|
cb_parse_tstamp(ptr, info);
|
|
break;
|
|
case CB_TAG_CBMEM_CONSOLE:
|
|
cb_parse_cbmem_cons(ptr, info);
|
|
break;
|
|
case CB_TAG_MRC_CACHE:
|
|
cb_parse_mrc_cache(ptr, info);
|
|
break;
|
|
}
|
|
|
|
ptr += rec->size;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* == Architecture specific == */
|
|
/* This is the x86 specific stuff. */
|
|
|
|
int get_coreboot_info(struct sysinfo_t *info)
|
|
{
|
|
int ret = cb_parse_header(phys_to_virt(0x00000000), 0x1000, info);
|
|
|
|
if (ret != 1)
|
|
ret = cb_parse_header(phys_to_virt(0x000f0000), 0x1000, info);
|
|
|
|
return (ret == 1) ? 0 : -1;
|
|
}
|