[PATCH v2 2/2] coreboot: make use of smbios parser

[Christian Gmeiner]

If u-boot gets used as coreboot payload it might be nice to get
vendor, model and bios version from smbios. I am not sure about
the output of all the read information.

With qemu target for coreboot this could look this:

CBFS: Found @ offset 14f40 size 3b188
Checking segment from ROM address 0xffc15178
Checking segment from ROM address 0xffc15194
Loading segment from ROM address 0xffc15178
  code (compression=1)
  New segment dstaddr 0x01110000 memsize 0x889ef srcaddr 0xffc151b0 filesize 0x3b150
Loading Segment: addr: 0x01110000 memsz: 0x00000000000889ef filesz: 0x000000000003b150
using LZMA
Loading segment from ROM address 0xffc15194
  Entry Point 0x01110000
BS: BS_PAYLOAD_LOAD run times (exec / console): 77 / 1 ms
Jumping to boot code at 0x01110000(0x07fa7000)

U-Boot 2020.10-00536-g5dcf7cc590-dirty (Oct 07 2020 - 14:21:51 +0200)

CPU: x86_64, vendor AMD, device 663h
DRAM:  127.1 MiB
MMC:
Video: No video mode configured in coreboot!
Video: No video mode configured in coreboot!
Vendor: QEMU
Model: Standard PC (i440FX + PIIX, 1996)
Bios Version: 4.12-3152-g326a499f6f-dirty
Net:   e1000: 52:54:00:12:34:56
       eth0: e1000#0
No working controllers found
Finalizing coreboot
Hit any key to stop autoboot:  0

Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
---
 board/coreboot/coreboot/coreboot.c | 45 ++++++++++++++++++++++++++++++
 configs/coreboot_defconfig         |  1 +
 2 files changed, 46 insertions(+)

diff --git a/board/coreboot/coreboot/coreboot.c b/board/coreboot/coreboot/coreboot.c
index b791b82ef4..afb457212a 100644
--- a/board/coreboot/coreboot/coreboot.c
+++ b/board/coreboot/coreboot/coreboot.c
@@ -4,7 +4,9 @@
  */
 
 #include <common.h>
+#include <asm/arch/sysinfo.h>
 #include <init.h>
+#include <smbios.h>
 
 int board_early_init_r(void)
 {
@@ -16,3 +18,46 @@ int board_early_init_r(void)
 
 	return 0;
 }
+
+#ifdef CONFIG_SMBIOS_PARSER
+int show_board_info(void)
+{
+	const struct smbios_entry *smbios = smbios_entry(lib_sysinfo.smbios_start, lib_sysinfo.smbios_size);
+
+	if (!smbios)
+		goto fallback;
+
+	const struct smbios_header *bios = smbios_header(smbios, SMBIOS_BIOS_INFORMATION);
+	const struct smbios_header *system = smbios_header(smbios, SMBIOS_SYSTEM_INFORMATION);
+	const struct smbios_type0 *t0 = (struct smbios_type0 *)bios;
+	const struct smbios_type1 *t1 = (struct smbios_type1 *)system;
+
+	if (!t0 || !t1)
+		goto fallback;
+
+	const char *bios_ver = smbios_string(bios, t0->bios_ver);
+	const char *model = smbios_string(system, t1->product_name);
+	const char *manufacturer = smbios_string(system, t1->manufacturer);
+
+	if (!model || !manufacturer || !bios_ver)
+		goto fallback;
+
+	printf("Vendor: %s\n", manufacturer);
+	printf("Model: %s\n", model);
+	printf("Bios Version: %s\n", bios_ver);
+
+	return 0;
+
+fallback:
+#ifdef CONFIG_OF_CONTROL
+	DECLARE_GLOBAL_DATA_PTR;
+
+	model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
+
+	if (model)
+		printf("Model: %s\n", model);
+#endif
+
+	return checkboard();
+}
+#endif
diff --git a/configs/coreboot_defconfig b/configs/coreboot_defconfig
index 3249b2fb2f..501a20e790 100644
--- a/configs/coreboot_defconfig
+++ b/configs/coreboot_defconfig
@@ -43,3 +43,4 @@ CONFIG_SOUND=y
 CONFIG_SOUND_I8254=y
 CONFIG_CONSOLE_SCROLL_LINES=5
 # CONFIG_GZIP is not set
+CONFIG_SMBIOS_PARSER=y
-- 
2.28.0