Furquan Shaikh has submitted this change and it was merged. ( https://review.coreboot.org/19518 )
Change subject: mainboard/google/poppy: Add support for cr50 I2C TPM ......................................................................
mainboard/google/poppy: Add support for cr50 I2C TPM
1. Add support for using cr50 I2C TPM on poppy. This will not be enabled until the next build. 2. Also, configure GPIOs for SPI and I2C TPM only if the corresponding Kconfig options are set.
BUG=b:36265511 TEST=Verified on a reworked board that I2C TPM communication works fine.
Change-Id: I3b293b8d410a6973a6dfea393c17d0be425b6a28 Signed-off-by: Furquan Shaikh furquan@chromium.org Reviewed-on: https://review.coreboot.org/19518 Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Aaron Durbin adurbin@chromium.org --- M src/mainboard/google/poppy/Kconfig M src/mainboard/google/poppy/variants/baseboard/devicetree.cb M src/mainboard/google/poppy/variants/baseboard/gpio.c 3 files changed, 50 insertions(+), 8 deletions(-)
Approvals: Aaron Durbin: Looks good to me, approved build bot (Jenkins): Verified
diff --git a/src/mainboard/google/poppy/Kconfig b/src/mainboard/google/poppy/Kconfig index ce32081..58af8df 100644 --- a/src/mainboard/google/poppy/Kconfig +++ b/src/mainboard/google/poppy/Kconfig @@ -22,7 +22,16 @@ string default "variants/baseboard/devicetree.cb"
+config DRIVER_TPM_I2C_BUS + depends on POPPY_USE_I2C_TPM + default 0x4 + +config DRIVER_TPM_I2C_ADDR + depends on POPPY_USE_I2C_TPM + default 0x50 + config DRIVER_TPM_SPI_BUS + depends on POPPY_USE_SPI_TPM default 0x1
config GBB_HWID @@ -56,6 +65,14 @@ int default 8
+# Select this option to enable use of cr50 I2C TPM on poppy. +config POPPY_USE_I2C_TPM + bool + default n + select I2C_TPM + select MAINBOARD_HAS_I2C_TPM_CR50 + select TPM2 + # Select this option to enable use of cr50 SPI TPM on poppy. # This option is disabled by default. config POPPY_USE_SPI_TPM @@ -64,6 +81,10 @@ select MAINBOARD_HAS_SPI_TPM_CR50 select SPI_TPM select TPM2 + +config TPM_TIS_ACPI_INTERRUPT + int + default 64 # GPE0_DW2_00 (GPP_E0)
config VARIANT_DIR string @@ -75,12 +96,5 @@ select HAS_RECOVERY_MRC_CACHE select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN select VBOOT_LID_SWITCH - -config DRIVER_TPM_SPI_BUS - default 0x1 - -config TPM_TIS_ACPI_INTERRUPT - int - default 64 # GPE0_DW2_00 (GPP_E0)
endif # BOARD_GOOGLE_BASEBOARD_POPPY diff --git a/src/mainboard/google/poppy/variants/baseboard/devicetree.cb b/src/mainboard/google/poppy/variants/baseboard/devicetree.cb index d232028..4e3ffaf 100644 --- a/src/mainboard/google/poppy/variants/baseboard/devicetree.cb +++ b/src/mainboard/google/poppy/variants/baseboard/devicetree.cb @@ -154,7 +154,7 @@ register "usb3_ports[3]" = "USB3_PORT_EMPTY" # Empty
register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3" # Touchscreen - register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3" # NFC + register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3" # H1 register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8" # Camera register "i2c_voltage[3]" = "I2C_VOLTAGE_1V8" # Pen register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8" # Camera @@ -167,6 +167,12 @@ .early_init = 1, }"
+ # Configure I2C1 for cr50 TPM. Early init is required to set up a BAR + # for TPM communication before memory is up. + register "i2c[1]" = "{ + .early_init = 1, + }" + # Must leave UART0 enabled or SD/eMMC will not work as PCI register "SerialIoDevMode" = "{ [PchSerialIoIndexI2C0] = PchSerialIoPci, diff --git a/src/mainboard/google/poppy/variants/baseboard/gpio.c b/src/mainboard/google/poppy/variants/baseboard/gpio.c index fcbbb1d..2be9d0f 100644 --- a/src/mainboard/google/poppy/variants/baseboard/gpio.c +++ b/src/mainboard/google/poppy/variants/baseboard/gpio.c @@ -92,6 +92,7 @@ PAD_CFG_NF(GPP_B13, NONE, DEEP, NF1), /* B14 : SPKR ==> NC */ PAD_CFG_NC(GPP_B14), +#if IS_ENABLED(CONFIG_POPPY_USE_SPI_TPM) /* B15 : GSPI0_CS# ==> PCH_SPI_H1_3V3_CS_L */ PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1), /* B16 : GSPI0_CLK ==> PCH_SPI_H1_3V3_CLK */ @@ -100,6 +101,16 @@ PAD_CFG_NF(GPP_B17, NONE, DEEP, NF1), /* B18 : GSPI0_MOSI ==> PCH_SPI_H1_3V3_MOSI */ PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1), +#else + /* B15 : GSPI0_CS# ==> NC */ + PAD_CFG_NC(GPP_B15), + /* B16 : GSPI0_CLK ==> NC */ + PAD_CFG_NC(GPP_B16), + /* B17 : GSPI0_MISO ==> NC */ + PAD_CFG_NC(GPP_B17), + /* B18 : GSPI0_MOSI ==> NC */ + PAD_CFG_NC(GPP_B18), +#endif /* B19 : GSPI1_CS# ==> PCH_SPI_FP_CS_L */ PAD_CFG_NF(GPP_B19, NONE, DEEP, NF1), /* B20 : GSPI1_CLK ==> PCH_SPI_FP_CLK */ @@ -147,10 +158,17 @@ PAD_CFG_NF(GPP_C16, NONE, DEEP, NF1), /* C17 : I2C0_SCL ==> PCH_I2C0_TOUCHSCREEN_3V3_SCL */ PAD_CFG_NF(GPP_C17, NONE, DEEP, NF1), +#if IS_ENABLED(CONFIG_POPPY_USE_I2C_TPM) /* C18 : I2C1_SDA ==> PCH_I2C1_H1_3V3_SDA */ PAD_CFG_NF(GPP_C18, NONE, DEEP, NF1), /* C19 : I2C1_SCL ==> PCH_I2C1_H1_3V3_SCL */ PAD_CFG_NF(GPP_C19, NONE, DEEP, NF1), +#else + /* C18 : I2C1_SDA ==> NC */ + PAD_CFG_NC(GPP_C18), + /* C19 : I2C1_SCL ==> NC */ + PAD_CFG_NC(GPP_C19), +#endif /* C20 : UART2_RXD ==> PCHRX_SERVOTX_UART */ PAD_CFG_NF(GPP_C20, NONE, DEEP, NF1), /* C21 : UART2_TXD ==> PCHTX_SERVORX_UART */ @@ -353,6 +371,7 @@
/* Early pad configuration in bootblock */ static const struct pad_config early_gpio_table[] = { +#if IS_ENABLED(CONFIG_POPPY_USE_SPI_TPM) /* B15 : GSPI0_CS# ==> PCH_SPI_H1_3V3_CS_L */ PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1), /* B16 : GSPI0_CLK ==> PCH_SPI_H1_3V3_CLK */ @@ -361,11 +380,14 @@ PAD_CFG_NF(GPP_B17, NONE, DEEP, NF1), /* B18 : GSPI0_MOSI ==> PCH_SPI_H1_3V3_MOSI */ PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1), +#endif
+#if IS_ENABLED(CONFIG_POPPY_USE_I2C_TPM) /* C18 : I2C1_SDA ==> PCH_I2C1_H1_3V3_SDA */ PAD_CFG_NF(GPP_C18, NONE, DEEP, NF1), /* C19 : I2C1_SCL ==> PCH_I2C1_H1_3V3_SCL */ PAD_CFG_NF(GPP_C19, NONE, DEEP, NF1), +#endif
/* Ensure UART pins are in native mode for H1. */ /* C20 : UART2_RXD ==> PCHRX_SERVOTX_UART */