diff options
Diffstat (limited to 'payloads/libpayload/arch/x86/coreboot.c')
| -rw-r--r-- | payloads/libpayload/arch/x86/coreboot.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/payloads/libpayload/arch/x86/coreboot.c b/payloads/libpayload/arch/x86/coreboot.c index f4f9b86f9e..6c6122d26c 100644 --- a/payloads/libpayload/arch/x86/coreboot.c +++ b/payloads/libpayload/arch/x86/coreboot.c @@ -158,6 +158,12 @@ static void cb_parse_framebuffer(void *ptr, struct sysinfo_t *info) } #endif +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_string(unsigned char *ptr, char **info) { *info = (char *)((struct cb_string *)ptr)->string; @@ -281,6 +287,9 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info) case CB_TAG_MRC_CACHE: cb_parse_mrc_cache(ptr, info); break; + case CB_TAG_X86_ROM_MTRR: + cb_parse_x86_rom_var_mtrr(ptr, info); + break; } ptr += rec->size; @@ -294,7 +303,13 @@ static int cb_parse_header(void *addr, int len, struct sysinfo_t *info) int get_coreboot_info(struct sysinfo_t *info) { - int ret = cb_parse_header(phys_to_virt(0x00000000), 0x1000, 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 != 1) ret = cb_parse_header(phys_to_virt(0x000f0000), 0x1000, info); |