cbsysinfo
Synopsis
cbsysinfo
Description
This displays information obtained from the coreboot sysinfo table. It is only useful when booting U-Boot from coreboot.
Example
=> cbsysinfo
Coreboot table at 500, size 5c4, records 1d (dec 29), decoded to 000000007dce4520, forwarded to 000000007ff9a000
CPU KHz : 0
Serial I/O port: 00000000
base : 00000000
pointer : 000000007ff9a370
type : 1
base : 000003f8
baud : 0d115200
regwidth : 1
input_hz : 0d1843200
PCI addr : 00000010
Mem ranges : 7
id: type || base || size
0: 10:table 0000000000000000 0000000000001000
1: 01:ram 0000000000001000 000000000009f000
2: 02:reserved 00000000000a0000 0000000000060000
3: 01:ram 0000000000100000 000000007fe6d000
4: 10:table 000000007ff6d000 0000000000093000
5: 02:reserved 00000000fec00000 0000000000001000
6: 02:reserved 00000000ff800000 0000000000800000
option_table: 000000007ff9a018
Bit Len Cfg ID Name
0 180 r 0 reserved_memory
180 1 e 4 boot_option 0:Fallback 1:Normal
184 4 h 0 reboot_counter
190 8 r 0 reserved_century
1b8 8 r 0 reserved_ibm_ps2_century
1c0 1 e 1 power_on_after_fail 0:Disable 1:Enable
1c4 4 e 6 debug_level 5:Notice 6:Info 7:Debug 8:Spew
1d0 80 r 0 vbnv
3f0 10 h 0 check_sum
CMOS start : 1c0
CMOS end : 1cf
CMOS csum loc: 3f0
VBNV start : ffffffff
VBNV size : ffffffff
CB version : 4.21-5-g7e6eae9679e3-dirty
Extra :
Build : Thu Sep 07 14:52:41 UTC 2023
Time : 14:52:41
Framebuffer : 000000007ff9a410
Phys addr : fd000000
X res : 0d800
X res : 0d600
Bytes / line: c80
Bpp : 0d32
pos/size red 16/8, green 8/8, blue 0/8, reserved 24/8
GPIOs : 0
id: port polarity val name
MACs : 0d10
0: 12:00:00:00:28:00
1: 00:00:00:fd:00:00
2: 20:03:00:00:58:02
3: 80:0c:00:00:20:10
4: 08:00:08:18:08:00
5: 16:00:00:00:10:00
6: 00:d0:fd:7f:00:00
7: 17:00:00:00:10:00
8: 00:e0:fd:7f:00:00
9: 37:00:00:00:10:00
Multiboot tab: 0000000000000000
CB header : 000000007ff9a000
CB mainboard: 000000007ff9a344
vendor : 0: Emulation
part_number : 10: QEMU x86 i440fx/piix4
vboot handoff: 0000000000000000
size : 0
vdat addr : 0000000000000000
size : 0
SMBIOS : 7ff6d000
size : 8000
ROM MTRR : 0
Tstamp table: 000000007ffdd000
CBmem cons : 000000007ffde000
Size : 1fff8
Cursor : 3332
MRC cache : 0000000000000000
ACPI GNVS : 0000000000000000
Board ID : ffffffff
RAM code : ffffffff
WiFi calib : 0000000000000000
Ramoops buff: 0
size : 0
SF size : 0
SF sector : 0
SF erase cmd: 0
FMAP offset : 0
CBFS offset : 200
CBFS size : 3ffe00
Boot media size: 400000
MTC start : 0
MTC size : 0
Chrome OS VPD: 0000000000000000
RSDP : 000000007ff75000
Unimpl. : 10 37 40
=>
Note that “Unimpl.” shows tags which U-Boot does not currently implement.