diff options
| author | Michael Niewöhner <foss@mniewoehner.de> | 2020-07-19 18:43:27 +0200 |
|---|---|---|
| committer | Michael Niewöhner <c0d3z3r0@review.coreboot.org> | 2020-08-30 21:10:13 +0000 |
| commit | f0b6b30c46049e9849474965c87c83e7540e25dc (patch) | |
| tree | fa029b677359901f9957126b4c40340323dfb1a0 /src/mainboard/system76/lemp9/Kconfig | |
| parent | 803bd3c68272c61bf18b62de3779aab3f217fe6d (diff) | |
mb/system76/lemp9: enable TPM
L140CU has a TPM2 connected via SPI. Add the TPM device to the
devicetree and enable it.
According to Intel doc#615170-001, PIRQ is required for SPI TPM to work.
Since the TPM is connected to GPP_A7, enable NF1 (PIRQA#) and set it as
TPM interrupt in Kconfig.
Note: The PCH maps either LPC TPM or SPI TPM to the same address and
handles either LPC or SPI communication transparently. Thus we can use
MAINBOARD_HAS_LPC_TPM here, which implements TPM via that address.
Tested, but only polling works currently, because there is some upstream
issue with the tpm_tis module in current Linux kernels. [1]
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1770021
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Change-Id: I26d3b396fe1e99368e18fd3a6a9f02e3585b9f6e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43641
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/system76/lemp9/Kconfig')
| -rw-r--r-- | src/mainboard/system76/lemp9/Kconfig | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/src/mainboard/system76/lemp9/Kconfig b/src/mainboard/system76/lemp9/Kconfig index 3431de1988..ef7c89af2e 100644 --- a/src/mainboard/system76/lemp9/Kconfig +++ b/src/mainboard/system76/lemp9/Kconfig @@ -10,9 +10,8 @@ config BOARD_SPECIFIC_OPTIONS select GENERIC_SPD_BIN select INTEL_GMA_HAVE_VBT select INTEL_LPSS_UART_FOR_CONSOLE -# Chip select 2 is not yet supported by intel fast_spi -# select MAINBOARD_HAS_SPI_TPM_CR50 -# select MAINBOARD_HAS_TPM2 + select MAINBOARD_HAS_LPC_TPM + select MAINBOARD_HAS_TPM2 select NO_UART_ON_SUPERIO select SOC_INTEL_COMETLAKE select SOC_INTEL_COMMON_BLOCK_HDA @@ -77,17 +76,12 @@ config VGA_BIOS_ID string default "8086,9b41" +config TPM_PIRQ + hex + default 0x10 # GPP_A7/PIRQA# + config POST_DEVICE bool default n -# Chip select 2 is not yet supported by intel fast_spi -#config DRIVER_TPM_SPI_BUS -# hex -# default 0x0 -# -#config DRIVER_TPM_SPI_CHIP -# int -# default 2 - endif |