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arch/x86/smbios: Add generation of type 20 table 

If available, use data from MEMINFO CBMEM table and saved handles
from type 17/19 tables to generate type 20 (Memory Device Mapped
Address) SMBIOS table.

Windows 10/11 and some other OSes use this table to report the total
memory available on a given device.

Change-Id: I2574d6209d973a8e7f112eb3ef61f5d26986e47b
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58271
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Matt DeVillier 2016-09-02 21:41:26 -05:00 committed by Felix Held
parent 291294d137
commit d1c1afdf57
2 changed files with 63 additions and 0 deletions
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48
src/arch/x86/smbios.c
View File

@ -1031,6 +1031,50 @@ static int smbios_write_type19(unsigned long *current, int *handle, int type16)
return len;
}
static int smbios_write_type20_table(unsigned long *current, int *handle, u32 addr_start,
u32 addr_end, int type17_handle, int type19_handle)
{
struct smbios_type20 *t = smbios_carve_table(*current, SMBIOS_MEMORY_DEVICE_MAPPED_ADDRESS,
sizeof(*t), *handle);
t->memory_device_handle = type17_handle;
t->memory_array_mapped_address_handle = type19_handle;
t->addr_start = addr_start;
t->addr_end = addr_end;
t->partition_row_pos = 0xff;
t->interleave_pos = 0xff;
t->interleave_depth = 0xff;
const int len = smbios_full_table_len(&t->header, t->eos);
*current += len;
*handle += 1;
return len;
}
static int smbios_write_type20(unsigned long *current, int *handle,
int type17_handle, int type19_handle)
{
u32 start_addr = 0;
int totallen = 0;
int i;
struct memory_info *meminfo;
meminfo = cbmem_find(CBMEM_ID_MEMINFO);
if (meminfo == NULL)
return 0; /* can't find mem info in cbmem */
printk(BIOS_INFO, "Create SMBIOS type 20\n");
for (i = 0; i < meminfo->dimm_cnt && i < ARRAY_SIZE(meminfo->dimm); i++) {
struct dimm_info *dimm;
dimm = &meminfo->dimm[i];
u32 end_addr = start_addr + (dimm->dimm_size << 10) - 1;
totallen += smbios_write_type20_table(current, handle, start_addr, end_addr,
type17_handle, type19_handle);
start_addr = end_addr + 1;
}
return totallen;
}
static int smbios_write_type32(unsigned long *current, int handle)
{
struct smbios_type32 *t = smbios_carve_table(*current, SMBIOS_SYSTEM_BOOT_INFORMATION,
@ -1281,8 +1325,12 @@ unsigned long smbios_write_tables(unsigned long current)
const int type16 = handle;
update_max(len, max_struct_size, smbios_write_type16(&current, &handle));
const int type17 = handle;
update_max(len, max_struct_size, smbios_write_type17(&current, &handle, type16));
const int type19 = handle;
update_max(len, max_struct_size, smbios_write_type19(&current, &handle, type16));
update_max(len, max_struct_size,
smbios_write_type20(&current, &handle, type17, type19));
update_max(len, max_struct_size, smbios_write_type32(&current, handle++));
update_max(len, max_struct_size, smbios_walk_device_tree(all_devices,

15
src/include/smbios.h
View File

@ -247,6 +247,7 @@ typedef enum {
SMBIOS_PHYS_MEMORY_ARRAY = 16,
SMBIOS_MEMORY_DEVICE = 17,
SMBIOS_MEMORY_ARRAY_MAPPED_ADDRESS = 19,
SMBIOS_MEMORY_DEVICE_MAPPED_ADDRESS = 20,
SMBIOS_SYSTEM_BOOT_INFORMATION = 32,
SMBIOS_IPMI_DEVICE_INFORMATION = 38,
SMBIOS_ONBOARD_DEVICES_EXTENDED_INFORMATION = 41,
@ -880,6 +881,20 @@ struct smbios_type19 {
u8 eos[2];
} __packed;
struct smbios_type20 {
struct smbios_header header;
u32 addr_start;
u32 addr_end;
u16 memory_device_handle;
u16 memory_array_mapped_address_handle;
u8 partition_row_pos;
u8 interleave_pos;
u8 interleave_depth;
u64 ext_addr_start;
u64 ext_addr_end;
u8 eos[2];
} __packed;
struct smbios_type32 {
struct smbios_header header;
u8 reserved[6];