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The SMI sleep entry handler will access the SMN space via the index/data
register at PCI config space offsets 0xb8 and 0xbc of the device at bus
0, device 0, function 0. This register pair is also used by other
software components running on the x86 cores after boot, so it should be
saved and restored at the beginning/end of the SMI handler if it
accesses SMN. The sleep entry SMI handler is a special case, since the
OS is already done at the moment we enter the sleep SMI handler which is
the last code that gets run on the x86 cores before entering S3/4/5.
BUG=b:237004699
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I0980562ef8a61489082a81c71d6d00d0786d68cb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65529
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
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Since bootblock_soc_early_init gets called before
bootblock_mainboard_early_init which does the early GPIO setup, external
I2C level shifters that are controlled by GPIOs might not be enabled yet.
Moving the reset_i2c_peripherals call to bootblock_soc_init makes sure
that the early GPIO setup is already done when reset_i2c_peripherals is
called.
Haven't probed any SCL signal on the non-SoC side of the I2C level
shifters yet, but the waveform on the SCL pin of I2C3 on the SoC of a
barla/careena Chromebook doesn't have the longer than expected SCL
pulses any more.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: If02140aef56ed6db7ecee24811724b5b24e54a91
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57291
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
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This reverts commit 8b1c6c6cb384c89659abbd043c2566df358d8f95. With
updated APCB, eSPI configuration carries over to bootblock. Hence eSPI
does not need to be re-initialized in bootblock.
BUG=b:241426419
TEST=Build and boot to OS in Skyrim with PSP verstage.
Cq-Depend: chrome-internal:4929421
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: I426b07329d4a0154d915381c99dcc9746b7a3d7c
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66697
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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Since the path after the chip keyword needs to point to the directory
that contains the chipset's chip.h file, change this from
soc/amd/rembrandt to soc/amd/mendocino.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I63334fbd59e74df491035b5cf7e296818cc02665
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66688
Reviewed-by: ritul guru <ritul.bits@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
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This reverts commit Ic152c295954d33ef1acddb3b06f0c6bbfbfb38ae.
There was a bug that caused the SMU to hang when writing port80. it has
since been resolved, so revert this workaround.
BUG=b:227201571
TEST=Build and boot to OS in Skyrim.
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: I5f10e282ab03756c7dbfb48182940f979eb122e4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66470
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
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'Mendocino' was an embargoed name and could previously not be used
in references to Skyrim. coreboot has references to sabrina both
in directory structure and in files. This will make life difficult
for people looking for Mendocino support in the long term. The code
name should be replaced with "mendocino".
BUG=b:239072117
TEST=Builds
Cq-Depend: chromium:3764023
Cq-Depend: chromium:3763392
Cq-Depend: chrome-internal:4876777
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Change-Id: I2d0f76fde07a209a79f7e1596cc8064e53f06ada
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65861
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
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