x86: coreboot: add SMBIOS cbmem entry parsing
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/cpu/coreboot/tables.c b/arch/x86/cpu/coreboot/tables.c
index 0f04c4f..a5d31d1 100644
--- a/arch/x86/cpu/coreboot/tables.c
+++ b/arch/x86/cpu/coreboot/tables.c
@@ -69,6 +69,17 @@
info->vbnv_size = vbnv->vbnv_size;
}
+static void cb_parse_cbmem_entry(unsigned char *ptr, struct sysinfo_t *info)
+{
+ struct cb_cbmem_entry *entry = (struct cb_cbmem_entry *)ptr;
+
+ if (entry->id != CBMEM_ID_SMBIOS)
+ return;
+
+ info->smbios_start = entry->address;
+ info->smbios_size = entry->entry_size;
+}
+
static void cb_parse_gpios(unsigned char *ptr, struct sysinfo_t *info)
{
int i;
@@ -206,6 +217,9 @@
case CB_TAG_VBNV:
cb_parse_vbnv(ptr, info);
break;
+ case CB_TAG_CBMEM_ENTRY:
+ cb_parse_cbmem_entry(ptr, info);
+ break;
default:
cb_parse_unhandled(rec->tag, ptr);
break;
diff --git a/arch/x86/include/asm/arch-coreboot/sysinfo.h b/arch/x86/include/asm/arch-coreboot/sysinfo.h
index dd8d1cb..419ec52 100644
--- a/arch/x86/include/asm/arch-coreboot/sysinfo.h
+++ b/arch/x86/include/asm/arch-coreboot/sysinfo.h
@@ -49,6 +49,8 @@
u32 vdat_size;
void *tstamp_table;
void *cbmem_cons;
+ u64 smbios_start;
+ u32 smbios_size;
struct cb_serial *serial;
};
diff --git a/arch/x86/include/asm/coreboot_tables.h b/arch/x86/include/asm/coreboot_tables.h
index 268284f..7e15767 100644
--- a/arch/x86/include/asm/coreboot_tables.h
+++ b/arch/x86/include/asm/coreboot_tables.h
@@ -214,6 +214,17 @@
uint32_t vbnv_size;
};
+#define CB_TAG_CBMEM_ENTRY 0x0031
+#define CBMEM_ID_SMBIOS 0x534d4254
+
+struct cb_cbmem_entry {
+ uint32_t tag;
+ uint32_t size;
+ uint64_t address;
+ uint32_t entry_size;
+ uint32_t id;
+};
+
#define CB_TAG_CMOS_OPTION_TABLE 0x00c8
struct cb_cmos_option_table {