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system76-coreboot/src/mainboard/asrock/b75m-itx/cmos.layout
Fabian Groffen 9277c5be62 mb/asrock/b75m-itx: Add Sandy/Ivy Bridge board B75M-ITX
This board is based off b75pro3-m, which is very similar.  Compared to
it, it just lacks a COM1 header, and the secondary ASMedia SATA3
controller.

Tested with:
CPUs:
- Core i5-3330
- Core i5-3470
- Core i7-3770

RAM:
- single bank 4GB CL11
- two banks 4+4GB CL9
- two banks 8+8GB CL10

OS:
- Gentoo Linux LiveUSB, KDE desktop (Linux 5.15.72)

Working:
- GRUB2 payload with embedded default config for boot from USB, disk
- UEFI EDK2 payload
- Intel ME stripped
- Native raminit
- Integrated graphics with libgfxinit (HDMI, DVI and VGA)
- (boot from) SATA2, SATA3, ports
- Rear USB 2 and 3 ports (supports boot)
- Internal USB 3.0 ports
- Realtek GbE NIC
- 2.0 channel audio via lineout jack output
- ACPI (power button triggers OS event)

Untested:
- Internal USB 2.0 ports
- eSATA port
- 7.1 channel audio

Signed-off-by: Fabian Groffen <grobian@gentoo.org>
Change-Id: Ia6a6eb3e922920f4afbcb7828cd2b779b9caebcb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73097
Reviewed-by: Kevin Keijzer
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
2023-03-06 19:03:05 +00:00

97 lines
1.6 KiB
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## SPDX-License-Identifier: GPL-2.0-or-later
# -----------------------------------------------------------------
entries
# -----------------------------------------------------------------
0 120 r 0 reserved_memory
# -----------------------------------------------------------------
# RTC_BOOT_BYTE (coreboot hardcoded)
384 1 e 2 boot_option
388 4 h 0 reboot_counter
# -----------------------------------------------------------------
# coreboot config options: console
395 4 e 3 debug_level
# coreboot config options: southbridge
408 1 e 1 nmi
409 2 e 4 power_on_after_fail
411 2 e 5 sata_mode
# coreboot config options: northbridge
416 5 e 6 gfx_uma_size
# coreboot config options: mainboard-specific
421 2 e 7 cpu_fan_tach_src
# coreboot config options: check sums
984 16 h 0 check_sum
# -----------------------------------------------------------------
enumerations
#ID value text
# Generic on/off enum
1 0 Disable
1 1 Enable
# boot_option
2 0 Fallback
2 1 Normal
# debug_level
3 0 Emergency
3 1 Alert
3 2 Critical
3 3 Error
3 4 Warning
3 5 Notice
3 6 Info
3 7 Debug
3 8 Spew
# power_on_after_fail
4 0 Disable
4 1 Enable
4 2 Keep
# sata_mode
5 0 AHCI
5 1 Compatible
5 2 Legacy
# gfx_uma_size (Intel IGP Video RAM size)
6 0 32M
6 1 64M
6 2 96M
6 3 128M
6 4 160M
6 5 192M
6 6 224M
6 7 256M
6 8 288M
6 9 320M
6 10 352M
6 11 384M
6 12 416M
6 13 448M
6 14 480M
6 15 512M
6 16 1024M
# cpu_fan_tach_src (select which header provides the tachometer
# signal to the Super I/O on its CPUFANIN input)
7 0 None
7 1 CPU_FAN1
7 2 CPU_FAN2
7 3 Both
# -----------------------------------------------------------------
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