mb/google/dedede: Enable AP <-> H1 Communication

Turn on the H1 device in the devicetree. Configure the concerned GPIOs
and enable the required config items.

BUG=None
TEST=Build the mainboard.

Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: I37972635454cd0d35608623e7be4110012ace658
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38772
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/dedede/Kconfig

@@ -1,11 +1,14 @@
 config BOARD_GOOGLE_BASEBOARD_DEDEDE
 	def_bool n
+	select DRIVERS_SPI_ACPI
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_BOARDID
 	select EC_GOOGLE_CHROMEEC_ESPI
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select MAINBOARD_HAS_CHROMEOS
+	select MAINBOARD_HAS_SPI_TPM_CR50
+	select MAINBOARD_HAS_TPM2
 	select SOC_INTEL_JASPERLAKE
 
 if BOARD_GOOGLE_BASEBOARD_DEDEDE
@@ -25,6 +28,9 @@ config DEVICETREE
 	string
 	default "variants/baseboard/devicetree.cb"
 
+config DRIVER_TPM_SPI_BUS
+	default 0x1
+
 config MAINBOARD_DIR
 	string
 	default "google/dedede"
@@ -41,6 +47,10 @@ config MAX_CPUS
 	int
 	default 4
 
+config TPM_TIS_ACPI_INTERRUPT
+	int
+	default 4  # GPE0_DW0_4 (GPP_B4)
+
 config UART_FOR_CONSOLE
 	int
 	default 2

src/mainboard/google/dedede/variants/baseboard/devicetree.cb

@@ -29,13 +29,13 @@ chip soc/intel/tigerlake
 	}"
 
 	register "SerialIoGSpiMode" = "{
-		[PchSerialIoIndexGSPI0] = PchSerialIoDisabled,
+		[PchSerialIoIndexGSPI0] = PchSerialIoPci,
 		[PchSerialIoIndexGSPI1] = PchSerialIoDisabled,
 		[PchSerialIoIndexGSPI2] = PchSerialIoDisabled,
 	}"
 
 	register "SerialIoGSpiCsMode" = "{
-		[PchSerialIoIndexGSPI0] = 0,
+		[PchSerialIoIndexGSPI0] = 1,
 		[PchSerialIoIndexGSPI1] = 0,
 		[PchSerialIoIndexGSPI2] = 0,
 	}"
@@ -52,6 +52,22 @@ chip soc/intel/tigerlake
 		[PchSerialIoIndexUART2] = PchSerialIoDisabled,
 	}"
 
+	# Intel Common SoC Config
+	#+-------------------+---------------------------+
+	#| Field             |  Value                    |
+	#+-------------------+---------------------------+
+	#| GSPI0             | cr50 TPM. Early init is   |
+	#|                   | required to set up a BAR  |
+	#|                   | for TPM communication     |
+	#|                   | before memory is up       |
+	#+-------------------+---------------------------+
+	register "common_soc_config" = "{
+		.gspi[0] = {
+			.speed_mhz = 1,
+			.early_init = 1,
+		},
+	}"
+
 	device domain 0 on
 		device pci 00.0 off end # Host Bridge
 		device pci 02.0 off end # Integrated Graphics Device
@@ -87,7 +103,14 @@ chip soc/intel/tigerlake
 		device pci 1c.7 off end # PCI Express Root Port 8
 		device pci 1e.0 off end # UART 0
 		device pci 1e.1 off end # UART 1
-		device pci 1e.2 off end # GSPI 0
+		device pci 1e.2 on
+			chip drivers/spi/acpi
+				register "hid" = "ACPI_DT_NAMESPACE_HID"
+				register "compat_string" = ""google,cr50""
+				register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_B4_IRQ)"
+				device spi 0 on end
+			end
+		end # GSPI 0
 		device pci 1e.3 off end # GSPI 1
 		device pci 1f.0 on
 			chip ec/google/chromeec

src/mainboard/google/dedede/variants/baseboard/gpio.c

@@ -21,11 +21,31 @@ static const struct pad_config gpio_table[] = {
 	/* A4  : ESPI_CS# */
 	/* A5  : ESPI_CLK */
 	/* A6  : ESPI_RESET_L */
+
+	/* B4  : H1_PCH_INT_ODL */
+	PAD_CFG_GPI_APIC(GPP_B4, NONE, PLTRST, LEVEL, INVERT),
+	/* B15 : H1_SLAVE_SPI_CS_L */
+	PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1),
+	/* B16 : H1_SLAVE_SPI_CLK */
+	PAD_CFG_NF(GPP_B16, NONE, DEEP, NF1),
+	/* B17 : H1_SLAVE_SPI_MISO_R */
+	PAD_CFG_NF(GPP_B17, NONE, DEEP, NF1),
+	/* B18 : H1_SLAVE_SPI_MOSI_R */
+	PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1),
 };
 
 /* Early pad configuration in bootblock */
 static const struct pad_config early_gpio_table[] = {
-	/* ToDo: Fill early gpio configuration */
+	/* B4 : H1_PCH_INT_ODL */
+	PAD_CFG_GPI_APIC(GPP_B4, NONE, PLTRST, LEVEL, INVERT),
+	/* B15 : H1_SLAVE_SPI_CS_L */
+	PAD_CFG_NF(GPP_B15, NONE, DEEP, NF1),
+	/* B16 : H1_SLAVE_SPI_CLK */
+	PAD_CFG_NF(GPP_B16, NONE, DEEP, NF1),
+	/* B17 : H1_SLAVE_SPI_MISO_R */
+	PAD_CFG_NF(GPP_B17, NONE, DEEP, NF1),
+	/* B18 : H1_SLAVE_SPI_MOSI_R */
+	PAD_CFG_NF(GPP_B18, NONE, DEEP, NF1),
 };
 
 const struct pad_config *__weak variant_gpio_table(size_t *num)