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libpayload: Cache physical CMOS option table location 

In the presence of self-relocating payloads, it's safer to keep
physical addresses in `libsysinfo`.

Change-Id: I64a37bef263022edb504086c02a3fd22ce068ba4
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43576
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Nico Huber 2020-07-18 14:45:23 +02:00 committed by Patrick Georgi
parent 14adb7eaa9
commit b2eafa666c
3 changed files with 4 additions and 4 deletions
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2
payloads/libpayload/drivers/options.c
View File

@ -53,7 +53,7 @@ struct nvram_accessor *use_mem = &(struct nvram_accessor) {
struct cb_cmos_option_table *get_system_option_table(void)
{
return lib_sysinfo.option_table;
return phys_to_virt(lib_sysinfo.cmos_option_table);
}
int options_checksum_valid(const struct nvram_accessor *nvram)

2
payloads/libpayload/include/sysinfo.h
View File

@ -63,7 +63,7 @@ struct sysinfo_t {
unsigned int type;
} memrange[SYSINFO_MAX_MEM_RANGES];
struct cb_cmos_option_table *option_table;
uintptr_t cmos_option_table;
u32 cmos_range_start;
u32 cmos_range_end;
u32 cmos_checksum_location;

4
payloads/libpayload/libc/coreboot.c
View File

@ -170,8 +170,8 @@ static void cb_parse_sku_id(unsigned char *ptr, struct sysinfo_t *info)
#if CONFIG(LP_NVRAM)
static void cb_parse_optiontable(void *ptr, struct sysinfo_t *info)
{
/* ptr points to a coreboot table entry and is already virtual */
info->option_table = ptr;
/* ptr is already virtual, but we want to keep physical addresses */
info->cmos_option_table = virt_to_phys(ptr);
}
static void cb_parse_checksum(void *ptr, struct sysinfo_t *info)