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mainboard/google/poppy: Disable unused TPM interface dynamically

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Based on the config options selected, decide at runtime which TPM
interface should be disabled so that ACPI tables are not generated for
that interface.

TEST=Verified that unused interface does not show up in ACPI tables.

Change-Id: Iee8f49e484ed024c549f60c88d874c08873b75cb
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/20141
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
This commit is contained in:
Furquan Shaikh 2017-06-09 17:57:59 -07:00 committed by Furquan Shaikh
parent 268eea0e41
commit b2f423578e
1 changed files with 16 additions and 0 deletions
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16
src/mainboard/google/poppy/mainboard.c
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@ -17,6 +17,7 @@
#include <baseboard/variants.h>
#include <device/device.h>
#include <ec/ec.h>
#include <soc/pci_devs.h>
#include <soc/nhlt.h>
#include <vendorcode/google/chromeos/chromeos.h>
@ -56,9 +57,24 @@ static unsigned long mainboard_write_acpi_tables(device_t device,
static void mainboard_enable(device_t dev)
{
device_t tpm;
dev->ops->init = mainboard_init;
dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
/* Disable unused interface(s) for TPM. */
if (!IS_ENABLED(CONFIG_POPPY_USE_SPI_TPM)) {
tpm = PCH_DEV_GSPI0;
if (tpm)
tpm->enabled = 0;
}
if (!IS_ENABLED(CONFIG_POPPY_USE_I2C_TPM)) {
tpm = PCH_DEV_I2C1;
if (tpm)
tpm->enabled = 0;
}
}
struct chip_operations mainboard_ops = {