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This change drops PULL_UP configured on pads in early_gpio table since
these pads have external pulls.
BUG=b:154351731
Change-Id: Id270e7b4f83dfa942655f513776a3b1c15c9678d
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43696
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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This change moves variant_sleep_gpio_table() definition to dalboz and
trembyle references to allow each to make their own changes.
BUG=b:159749536, b:159453643
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: I15b19cea05f1a540c56b6bc0507306d2348ac17f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42937
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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This change configures GPIO_40 (NVME_AUX_RESET_L) as drive low in
sleep path so that the PERST# to NVMe device keeps asserted until
coreboot reconfigures it as high on S3 resume path. This is similar to
the earlier change for PCIE_RST1_L but helps platforms that use
NVME_AUX_RESET_L instead of PCIE_RST1_L. GPIO_40 lives in S5 domain,
hence it retains state across S3 entry/exit.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ie79e946eee8f393863630226ae2183e653030415
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2261117
Reviewed-by: Aaron Durbin <adurbin@google.com>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42935
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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This change configures PCIE_RST1_L as GPO driven low on the sleep
path. This is required to keep PERST# asserted to devices until
coreboot deasserts it on S3 resume path. Without this change, on S3
resume, PCIE_RST1_L gets deasserted sooner than required resulting in
violation of PCIe reset timings.
With this change, the behavior of PCIE_RST1_L is as follows:
1. GPIO27 is configured as NF (PCIE_RST1_L) in coreboot
bootblock/romstage and driven high.
2. On S3 entry, GPIO27 is configured as GPO driven low.
* Boot out of G3: Timing should be met since GPIO_27 is pulled down by
default until coreboot configures it.
* S3 resume: Timing should be met since GPIO_27 is configured as GPO
low and it retains state across S3 entry/exit. So, should be low
until coreboot configures it.
* Warm reset: Timing should be met since it is configured as NF. So,
hardware guarantees the reset timing as seen in "warm reset.jpg" in
#46.
BUG=b:152582706
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ia0ad1522edc438fd054d927ef4a2ab5c27329c00
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2261116
Reviewed-by: Aaron Durbin <adurbin@google.com>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42934
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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This change turns off power to camera and pen devices when entering
sleep since they do not act as wake sources in S3. Power to trackpad
and WiFi is left enabled since they are wake sources for S3.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: I21bcdd53370372c7d43c3b685abb2a9171e42d22
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2261115
Reviewed-by: Aaron Durbin <adurbin@google.com>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42933
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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This change adds support to configure GPIOs on the sleep path. This is
required to turn off power to devices that do not act as wake sources
and to assert reset to devices.
Currently, variant_sleep_gpio_table() returns an empty table by
default. In the following changes, entries will be added to
gpio_sleep_table.
BUG=b:152582706
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: I7286cbf165024bdd81f8748e525542dce8dd8702
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2253642
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@google.com>
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42932
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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This change moves the configuration of PCIE_RST0_L as native
function to happen in early GPIO table. This ensures that the PERST#
signal is deasserted as soon as possible when the system comes out
of sleep state in case the sleep path asserted/deasserted the PERST#
as GPIO out.
A big difference in functionality with this change is that PCIE_RST0_L
signal is now configured as part of RO, which should be fine since
all PCIe devices have a second AUX_RESET_L signal or use PCIE_RST1_L
to control the actual reset to the device.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: I21a9c25b5a8a6d502cdb79cbe0dbad6ef98d6d63
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42739
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This change moves the GPIOs that need to be configured for early
access in coreboot to early_gpio_table[] in
gpio_baseboard_common.c. These GPIOs include:
* Pads to talk to EC
* Pads to talk to TPM
* Pads to talk to serial console
These should be configured in the first stage that runs coreboot
i.e. in case of VBOOT_STARTS_BEFORE_BOOTBLOCK, it should be done as
part of verstage (which starts on PSP), else it should be done as part
of bootblock (which is the first stage that runs on x86).
This change drops GPIO_137 from early_gpio_table since that is not
really required in early stages.
BUG=b:154351731
TEST=Verified that trembyle still boots.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ifbdbb02cbfc65ddb68f0ae75cf4b1f2ea1656b91
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/2252709
Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42719
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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