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mb/apple/macbookair4_2: Add CMOS support 

Added CMOS support for MacBook Air 4,2. In future, I hope there will
be more useful options available, because I'm working on macbooks
support.

Also, it may be necessary for hyper_threading support (#29669) once it
will be ready.

Change-Id: I369ed9aeff2098a4840918531be6a34cfc8d2a1e
Signed-off-by: Evgeny Zinoviev <me@ch1p.io>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33045
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Peter Lemenkov <lemenkov@gmail.com>
This commit is contained in:
Evgeny Zinoviev 2019-05-28 17:44:43 +03:00 committed by Patrick Georgi
parent ee38b991eb
commit 4aab4abfa2
3 changed files with 89 additions and 0 deletions
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2
src/mainboard/apple/macbookair4_2/Kconfig
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@ -14,6 +14,8 @@ config BOARD_SPECIFIC_OPTIONS
select SYSTEM_TYPE_LAPTOP
select GFX_GMA_INTERNAL_IS_EDP
select MAINBOARD_HAS_LIBGFXINIT
select HAVE_CMOS_DEFAULT
select HAVE_OPTION_TABLE
config MAINBOARD_DIR
string

2
src/mainboard/apple/macbookair4_2/cmos.default Normal file
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@ -0,0 +1,2 @@
boot_option=Fallback
debug_level=Debug

85
src/mainboard/apple/macbookair4_2/cmos.layout Normal file
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@ -0,0 +1,85 @@
##
## This file is part of the coreboot project.
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; version 2 of the License.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
# -----------------------------------------------------------------
entries
# -----------------------------------------------------------------
# Status Register A
# -----------------------------------------------------------------
# Status Register B
# -----------------------------------------------------------------
# Status Register C
#96 4 r 0 status_c_rsvd
#100 1 r 0 uf_flag
#101 1 r 0 af_flag
#102 1 r 0 pf_flag
#103 1 r 0 irqf_flag
# -----------------------------------------------------------------
# Status Register D
#104 7 r 0 status_d_rsvd
#111 1 r 0 valid_cmos_ram
# -----------------------------------------------------------------
# Diagnostic Status Register
#112 8 r 0 diag_rsvd1
# -----------------------------------------------------------------
0 120 r 0 reserved_memory
#120 264 r 0 unused
# -----------------------------------------------------------------
# RTC_BOOT_BYTE (coreboot hardcoded)
384 1 e 4 boot_option
388 4 h 0 reboot_counter
#390 2 r 0 unused?
# -----------------------------------------------------------------
# coreboot config options: console
#392 3 r 0 unused
395 4 e 6 debug_level
#399 1 r 0 unused
#400 8 r 0 reserved for century byte
# coreboot config options: southbridge
408 1 e 1 nmi
409 2 e 7 power_on_after_fail
# coreboot config options: cpu
#424 8 r 0 unused
# coreboot config options: northbridge
#432 5 e 11 gfx_uma_size
#437 3 r 0 unused
#440 8 h 0 volume
# SandyBridge MRC Scrambler Seed values
896 32 r 0 mrc_scrambler_seed
928 32 r 0 mrc_scrambler_seed_s3
960 16 r 0 mrc_scrambler_seed_chk
# coreboot config options: check sums
984 16 h 0 check_sum
# -----------------------------------------------------------------
enumerations
#ID value text
1 0 Disable
1 1 Enable
2 0 Enable
2 1 Disable
4 0 Fallback
4 1 Normal
6 0 Emergency
6 1 Alert
6 2 Critical
6 3 Error
6 4 Warning
6 5 Notice
6 6 Info
6 7 Debug
6 8 Spew
7 0 Disable
7 1 Enable
7 2 Keep
# -----------------------------------------------------------------
checksums
checksum 392 447 984