soc/amd/genoa: Enable eSPI early

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I4965eac4ec3d600b1e840affce4e5b4fa2ea4360
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76508
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

6 files changed, 90 insertions, 0 deletions

diff --git a/src/mainboard/amd/onyx/devicetree.cb b/src/mainboard/amd/onyx/devicetree.cb
index 5f447b2540..2b37b761fd 100644
--- a/src/mainboard/amd/onyx/devicetree.cb
+++ b/src/mainboard/amd/onyx/devicetree.cb
@@ -1,5 +1,18 @@
 chip soc/amd/genoa
 
+	# eSPI configuration
+	register "common_config.espi_config" = "{
+		.std_io_decode_bitmap = ESPI_DECODE_IO_0x80_EN,
+		.io_mode = ESPI_IO_MODE_SINGLE,
+		.op_freq_mhz = ESPI_OP_FREQ_33_MHZ,
+		.crc_check_enable = 1,
+		.alert_pin = ESPI_ALERT_PIN_PUSH_PULL,
+		.periph_ch_en = 0,
+		.vw_ch_en = 0,
+		.oob_ch_en = 0,
+		.flash_ch_en = 0,
+	}"
+
 	device domain 0 on
 	end
 
diff --git a/src/soc/amd/genoa/Kconfig b/src/soc/amd/genoa/Kconfig
index d3803652c7..3044d717aa 100644
--- a/src/soc/amd/genoa/Kconfig
+++ b/src/soc/amd/genoa/Kconfig
@@ -12,9 +12,12 @@ config SOC_SPECIFIC_OPTIONS
 	select SOC_AMD_COMMON_BLOCK_ACPIMMIO
 	select SOC_AMD_COMMON_BLOCK_AOAC
 	select SOC_AMD_COMMON_BLOCK_CPUFREQ_FAM17H_19H
+	select SOC_AMD_COMMON_BLOCK_HAS_ESPI
+	select SOC_AMD_COMMON_BLOCK_LPC
 	select SOC_AMD_COMMON_BLOCK_NONCAR
 	select SOC_AMD_COMMON_BLOCK_PCI_MMCONF
 	select SOC_AMD_COMMON_BLOCK_TSC
+	select SOC_AMD_COMMON_BLOCK_USE_ESPI
 	select X86_CUSTOM_BOOTMEDIA
 
 config USE_EXP_X86_64_SUPPORT
diff --git a/src/soc/amd/genoa/early_fch.c b/src/soc/amd/genoa/early_fch.c
index 21e988e763..8de43e22e3 100644
--- a/src/soc/amd/genoa/early_fch.c
+++ b/src/soc/amd/genoa/early_fch.c
@@ -14,6 +14,8 @@ void fch_pre_init(void)
 	fch_enable_cf9_io();
 
 	enable_aoac_devices();
+
+	configure_espi_with_mb_hook();
 }
 
 /* After console init */
diff --git a/src/soc/amd/genoa/include/soc/acpi.h b/src/soc/amd/genoa/include/soc/acpi.h
new file mode 100644
index 0000000000..51fa91ef93
--- /dev/null
+++ b/src/soc/amd/genoa/include/soc/acpi.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#ifndef AMD_GENOA_ACPI_H
+#define AMD_GENOA_ACPI_H
+
+#define ACPI_SCI_IRQ 9
+
+#endif /* AMD_GENOA_ACPI_H */
diff --git a/src/soc/amd/genoa/include/soc/lpc.h b/src/soc/amd/genoa/include/soc/lpc.h
new file mode 100644
index 0000000000..f98ffe8ef8
--- /dev/null
+++ b/src/soc/amd/genoa/include/soc/lpc.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_GENOA_LPC_H
+#define AMD_GENOA_LPC_H
+
+#define SPI_BASE_ADDRESS_REGISTER	0xa0
+#define   SPI_BASE_ALIGNMENT		BIT(8)
+#define   SPI_BASE_RESERVED		(BIT(5) | BIT(6) | BIT(7))
+#define   PSP_SPI_MMIO_SEL		BIT(4)
+#define   ROUTE_TPM_2_SPI		BIT(3)
+#define   SPI_ABORT_ENABLE		BIT(2)
+#define   SPI_ROM_ENABLE		BIT(1)
+#define   SPI_ROM_ALT_ENABLE		BIT(0)
+#define   SPI_PRESERVE_BITS		(BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4))
+
+#endif /* AMD_GENOA_LPC_H */
diff --git a/src/soc/amd/genoa/include/soc/pci_devs.h b/src/soc/amd/genoa/include/soc/pci_devs.h
new file mode 100644
index 0000000000..d314deb4a5
--- /dev/null
+++ b/src/soc/amd/genoa/include/soc/pci_devs.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef AMD_GENOA_PCI_DEVS_H
+#define AMD_GENOA_PCI_DEVS_H
+
+#include <device/pci_def.h>
+#include <amdblocks/pci_devs.h>
+
+/* GNB Root Complex */
+#define GNB_DEV			0x0
+#define GNB_FUNC		0
+#define GNB_DEVFN		PCI_DEVFN(GNB_DEV, GNB_FUNC)
+#define SOC_GNB_DEV		_SOC_DEV(GNB_DEV, GNB_FUNC)
+
+/* SMBUS */
+#define SMBUS_DEV		0x14
+#define SMBUS_FUNC		0
+#define SMBUS_DEVFN		PCI_DEVFN(SMBUS_DEV, SMBUS_FUNC)
+#define SOC_SMBUS_DEV		_SOC_DEV(SMBUS_DEV, SMBUS_FUNC)
+
+/* Data Fabric functions */
+#define DF_DEV			0x18
+
+#define DF_F0_DEVFN		PCI_DEVFN(DF_DEV, 0)
+#define SOC_DF_F0_DEV		_SOC_DEV(DF_DEV, 0)
+
+#define DF_F1_DEVFN		PCI_DEVFN(DF_DEV, 1)
+#define SOC_DF_F1_DEV		_SOC_DEV(DF_DEV, 1)
+
+#define DF_F2_DEVFN		PCI_DEVFN(DF_DEV, 2)
+#define SOC_DF_F2_DEV		_SOC_DEV(DF_DEV, 2)
+
+#define DF_F3_DEVFN		PCI_DEVFN(DF_DEV, 3)
+#define SOC_DF_F3_DEV		_SOC_DEV(DF_DEV, 3)
+
+#define DF_F4_DEVFN		PCI_DEVFN(DF_DEV, 4)
+#define SOC_DF_F4_DEV		_SOC_DEV(DF_DEV, 4)
+
+#define DF_F5_DEVFN		PCI_DEVFN(DF_DEV, 5)
+#define SOC_DF_F5_DEV		_SOC_DEV(DF_DEV, 5)
+
+#define DF_F6_DEVFN		PCI_DEVFN(DF_DEV, 6)
+#define SOC_DF_F6_DEV		_SOC_DEV(DF_DEV, 6)
+
+#define DF_F7_DEVFN		PCI_DEVFN(DF_DEV, 7)
+#define SOC_DF_F7_DEV		_SOC_DEV(DF_DEV, 7)
+
+#endif