soc/intel/elkhartlake/bootblock: Do initial SoC commit until bootblock

Clone entirely from Jasperlake

This patch is based on TGL_upstream series patches:
https://review.coreboot.org/c/coreboot/+/36550

List of changes on top off initial jasperlake clone
1. Replace "Jasperlake" with "Elkhartlake"
2. Replace "jsl" with "ehl"
3. Rename structure based on Jasperlake with Elkhartlake
6. Add required headers into include/soc/ from JSL directory

Elkhart Lake specific changes will follow in subsequent patches.
1. soc/intel/elkhartlake: Update Kconfig

Signed-off-by: Tan, Lean Sheng <lean.sheng.tan@intel.com>
Change-Id: I9f91c1efa81a358b1f59e032e209e07b62d54613
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44799
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

9 files changed, 554 insertions, 0 deletions

diff --git a/src/soc/intel/elkhartlake/include/soc/bootblock.h b/src/soc/intel/elkhartlake/include/soc/bootblock.h
new file mode 100644
index 0000000000..2dc50c1ddc
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/bootblock.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_ELKHARTLAKE_BOOTBLOCK_H_
+#define _SOC_ELKHARTLAKE_BOOTBLOCK_H_
+
+/* Bootblock pre console init programming */
+void bootblock_cpu_init(void);
+void bootblock_pch_early_init(void);
+
+/* Bootblock post console init programming */
+void bootblock_pch_init(void);
+void pch_early_iorange_init(void);
+void report_platform_info(void);
+
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/espi.h b/src/soc/intel/elkhartlake/include/soc/espi.h
new file mode 100644
index 0000000000..80b5c1e49e
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/espi.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_ELKHARTLAKE_ESPI_H_
+#define _SOC_ELKHARTLAKE_ESPI_H_
+
+
+/* PCI Configuration Space (D31:F0): ESPI */
+#define SCI_IRQ_SEL		(7 << 0)
+#define SCIS_IRQ9		0
+#define SCIS_IRQ10		1
+#define SCIS_IRQ11		2
+#define SCIS_IRQ20		4
+#define SCIS_IRQ21		5
+#define SCIS_IRQ22		6
+#define SCIS_IRQ23		7
+#define SERIRQ_CNTL		0x64
+#define ESPI_IO_DEC		0x80 /* IO Decode Ranges Register */
+#define   COMA_RANGE		0x0 /* 0x3F8 - 0x3FF COM1*/
+#define   COMB_RANGE		0x1 /* 0x2F8 - 0x2FF COM2*/
+#define ESPI_GEN1_DEC		0x84 /* ESPI IF Generic Decode Range 1 */
+#define ESPI_GEN2_DEC		0x88 /* ESPI IF Generic Decode Range 2 */
+#define ESPI_GEN3_DEC		0x8c /* ESPI IF Generic Decode Range 3 */
+#define ESPI_GEN4_DEC		0x90 /* ESPI IF Generic Decode Range 4 */
+#define LGMR			0x98 /* ESPI Generic Memory Range */
+#define PCCTL			0xE0 /* PCI Clock Control */
+#define   CLKRUN_EN		(1 << 0)
+
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/iomap.h b/src/soc/intel/elkhartlake/include/soc/iomap.h
new file mode 100644
index 0000000000..5ba40bc5ff
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/iomap.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_ELKHARTLAKE_IOMAP_H_
+#define _SOC_ELKHARTLAKE_IOMAP_H_
+
+/*
+ * Memory-mapped I/O registers.
+ */
+#define MCFG_BASE_ADDRESS	CONFIG_MMCONF_BASE_ADDRESS
+#define MCFG_BASE_SIZE		0x4000000
+
+#define PCH_PRESERVED_BASE_ADDRESS	0xfc800000
+#define PCH_PRESERVED_BASE_SIZE	0x02000000
+
+#define PCH_TRACE_HUB_BASE_ADDRESS	0xfc800000
+#define PCH_TRACE_HUB_BASE_SIZE	0x00800000
+
+#define DMI_BASE_ADDRESS	0xfeda0000
+#define DMI_BASE_SIZE		0x1000
+
+#define EP_BASE_ADDRESS		0xfeda1000
+#define EP_BASE_SIZE		0x1000
+
+#define EDRAM_BASE_ADDRESS	0xfed80000
+#define EDRAM_BASE_SIZE		0x4000
+
+#define GFXVT_BASE_ADDRESS	0xfed90000
+#define GFXVT_BASE_SIZE		0x1000
+
+#define VTVC0_BASE_ADDRESS	0xfed91000
+#define VTVC0_BASE_SIZE		0x1000
+
+#define REG_BASE_ADDRESS	0xfb000000
+#define REG_BASE_SIZE		0x1000
+
+#define HPET_BASE_ADDRESS	0xfed00000
+
+#define PCH_PWRM_BASE_ADDRESS	0xfe000000
+#define PCH_PWRM_BASE_SIZE	0x10000
+
+#define SPI_BASE_ADDRESS	0xfe010000
+
+#define GPIO_BASE_SIZE		0x10000
+
+#define HECI1_BASE_ADDRESS	0xfeda2000
+
+#define VTD_BASE_ADDRESS	0xfed90000
+#define VTD_BASE_SIZE		0x00004000
+
+#define MCH_BASE_ADDRESS	0xfea80000
+#define MCH_BASE_SIZE		0x8000
+
+#define EARLY_GSPI_BASE_ADDRESS	0xfe011000
+
+#define EARLY_I2C_BASE_ADDRESS	0xfe040000
+#define EARLY_I2C_BASE(x)	(EARLY_I2C_BASE_ADDRESS + (0x1000 * (x)))
+
+/*
+ * I/O port address space
+ */
+#define SMBUS_BASE_ADDRESS	0x0efa0
+#define SMBUS_BASE_SIZE		0x20
+
+#define ACPI_BASE_ADDRESS	0x1800
+#define ACPI_BASE_SIZE		0x100
+
+#define TCO_BASE_ADDRESS	0x400
+#define TCO_BASE_SIZE		0x20
+
+#define P2SB_BAR		CONFIG_PCR_BASE_ADDRESS
+#define P2SB_SIZE		(16 * MiB)
+
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/p2sb.h b/src/soc/intel/elkhartlake/include/soc/p2sb.h
new file mode 100644
index 0000000000..12ae313e3b
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/p2sb.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_ELKHARTLAKE_P2SB_H_
+#define _SOC_ELKHARTLAKE_P2SB_H_
+
+#define HPTC_OFFSET			0x60
+#define HPTC_ADDR_ENABLE_BIT		(1 << 7)
+
+#define PCH_P2SB_EPMASK0		0x220
+
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/pch.h b/src/soc/intel/elkhartlake/include/soc/pch.h
new file mode 100644
index 0000000000..7a2d4adead
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/pch.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_ELKHARTLAKE_PCH_H_
+#define _SOC_ELKHARTLAKE_PCH_H_
+
+
+#define PCIE_CLK_NOTUSED		0xFF
+#define PCIE_CLK_LAN			0x70
+#define PCIE_CLK_FREE			0x80
+
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/pci_devs.h b/src/soc/intel/elkhartlake/include/soc/pci_devs.h
new file mode 100644
index 0000000000..0ae7db80bf
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/pci_devs.h
@@ -0,0 +1,192 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_ELKHARTLAKE_PCI_DEVS_H_
+#define _SOC_ELKHARTLAKE_PCI_DEVS_H_
+
+#include <device/pci_def.h>
+
+#define _PCH_DEVFN(slot, func)	PCI_DEVFN(PCH_DEV_SLOT_ ## slot, func)
+
+#if !defined(__SIMPLE_DEVICE__)
+#include <device/device.h>
+#define _PCH_DEV(slot, func)	pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
+#else
+#define _PCH_DEV(slot, func)	PCI_DEV(0, PCH_DEV_SLOT_ ## slot, func)
+#endif
+
+/* System Agent Devices */
+
+#define SA_DEV_SLOT_ROOT	0x00
+#define  SA_DEVFN_ROOT		PCI_DEVFN(SA_DEV_SLOT_ROOT, 0)
+#if defined(__SIMPLE_DEVICE__)
+#define  SA_DEV_ROOT		PCI_DEV(0, SA_DEV_SLOT_ROOT, 0)
+#endif
+
+#define SA_DEV_SLOT_IGD		0x02
+#define  SA_DEVFN_IGD		PCI_DEVFN(SA_DEV_SLOT_IGD, 0)
+#define  SA_DEV_IGD		PCI_DEV(0, SA_DEV_SLOT_IGD, 0)
+
+#define SA_DEV_SLOT_DPTF	0x04
+#define  SA_DEVFN_DPTF		PCI_DEVFN(SA_DEV_SLOT_DPTF, 0)
+#define  SA_DEV_DPTF		PCI_DEV(0, SA_DEV_SLOT_DPTF, 0)
+
+#define SA_DEV_SLOT_TBT		0x07
+#define  SA_DEVFN_TBT0		PCI_DEVFN(SA_DEV_SLOT_TBT, 0)
+#define  SA_DEVFN_TBT1		PCI_DEVFN(SA_DEV_SLOT_TBT, 1)
+#define  SA_DEVFN_TBT2		PCI_DEVFN(SA_DEV_SLOT_TBT, 2)
+#define  SA_DEVFN_TBT3		PCI_DEVFN(SA_DEV_SLOT_TBT, 3)
+#define  SA_DEV_TBT0		PCI_DEV(0, SA_DEV_SLOT_TBT, 0)
+#define  SA_DEV_TBT1		PCI_DEV(0, SA_DEV_SLOT_TBT, 1)
+#define  SA_DEV_TBT2		PCI_DEV(0, SA_DEV_SLOT_TBT, 2)
+#define  SA_DEV_TBT3		PCI_DEV(0, SA_DEV_SLOT_TBT, 3)
+
+#define SA_DEV_SLOT_IPU		0x05
+#define  SA_DEVFN_IPU		PCI_DEVFN(SA_DEV_SLOT_IPU, 0)
+#define  SA_DEV_IPU		PCI_DEV(0, SA_DEV_SLOT_IPU, 0)
+
+/* PCH Devices */
+#define PCH_DEV_SLOT_SIO0	0x10
+#define  PCH_DEVFN_CNVI_BT	_PCH_DEVFN(SIO0, 2)
+#define  PCH_DEVFN_THC0		_PCH_DEVFN(SIO0, 6)
+#define  PCH_DEVFN_THC1		_PCH_DEVFN(SIO0, 7)
+#define  PCH_DEV_CNVI_BT	_PCH_DEV(SIO0, 2)
+#define  PCH_DEV_THC0		_PCH_DEV(SIO0, 6)
+#define  PCH_DEV_THC1		_PCH_DEV(SIO0, 7)
+
+#define PCH_DEV_SLOT_SIO1	0x11
+#define  PCH_DEVFN_UART3	_PCH_DEVFN(SIO1, 0)
+#define  PCH_DEV_UART3          _PCH_DEV(SIO1, 0)
+
+#define PCH_DEV_SLOT_ISH	0x12
+#define  PCH_DEVFN_ISH		_PCH_DEVFN(ISH, 0)
+#define  PCH_DEVFN_GSPI2	_PCH_DEVFN(ISH, 6)
+#define  PCH_DEV_ISH		_PCH_DEV(ISH, 0)
+#define  PCH_DEV_GSPI2		_PCH_DEV(ISH, 6)
+
+#define PCH_DEV_SLOT_SIO2	0x13
+#define  PCH_DEVFN_GSPI3	_PCH_DEVFN(SIO2, 0)
+#define  PCH_DEV_GSPI3		_PCH_DEV(SIO2, 0)
+
+#define PCH_DEV_SLOT_XHCI	0x14
+#define  PCH_DEVFN_XHCI		_PCH_DEVFN(XHCI, 0)
+#define  PCH_DEVFN_USBOTG	_PCH_DEVFN(XHCI, 1)
+#define  PCH_DEVFN_SRAM		_PCH_DEVFN(XHCI, 2)
+#define  PCH_DEVFN_CNVI_WIFI	_PCH_DEVFN(XHCI, 3)
+#define  PCH_DEV_XHCI		_PCH_DEV(XHCI, 0)
+#define  PCH_DEV_USBOTG		_PCH_DEV(XHCI, 1)
+#define  PCH_DEV_SRAM		_PCH_DEV(XHCI, 2)
+#define  PCH_DEV_CNVI_WIFI	_PCH_DEV(XHCI, 3)
+#define  PCH_DEVFN_SDCARD	_PCH_DEVFN(XHCI, 5)
+#define  PCH_DEV_SDCARD		_PCH_DEV(XHCI, 5)
+
+#define PCH_DEV_SLOT_SIO3	0x15
+#define  PCH_DEVFN_I2C0		_PCH_DEVFN(SIO3, 0)
+#define  PCH_DEVFN_I2C1		_PCH_DEVFN(SIO3, 1)
+#define  PCH_DEVFN_I2C2		_PCH_DEVFN(SIO3, 2)
+#define  PCH_DEVFN_I2C3		_PCH_DEVFN(SIO3, 3)
+#define  PCH_DEV_I2C0		_PCH_DEV(SIO3, 0)
+#define  PCH_DEV_I2C1		_PCH_DEV(SIO3, 1)
+#define  PCH_DEV_I2C2		_PCH_DEV(SIO3, 2)
+#define  PCH_DEV_I2C3		_PCH_DEV(SIO3, 3)
+
+#define PCH_DEV_SLOT_CSE	0x16
+#define  PCH_DEVFN_CSE		_PCH_DEVFN(CSE, 0)
+#define  PCH_DEVFN_CSE_2	_PCH_DEVFN(CSE, 1)
+#define  PCH_DEVFN_CSE_IDER	_PCH_DEVFN(CSE, 2)
+#define  PCH_DEVFN_CSE_KT	_PCH_DEVFN(CSE, 3)
+#define  PCH_DEVFN_CSE_3	_PCH_DEVFN(CSE, 4)
+#define  PCH_DEVFN_CSE_4	_PCH_DEVFN(CSE, 5)
+#define  PCH_DEV_CSE		_PCH_DEV(CSE, 0)
+#define  PCH_DEV_CSE_2		_PCH_DEV(CSE, 1)
+#define  PCH_DEV_CSE_IDER	_PCH_DEV(CSE, 2)
+#define  PCH_DEV_CSE_KT		_PCH_DEV(CSE, 3)
+#define  PCH_DEV_CSE_3		_PCH_DEV(CSE, 4)
+#define  PCH_DEV_CSE_4		_PCH_DEV(CSE, 5)
+
+#define PCH_DEV_SLOT_SATA	0x17
+#define  PCH_DEVFN_SATA		_PCH_DEVFN(SATA, 0)
+#define  PCH_DEV_SATA		_PCH_DEV(SATA, 0)
+
+#define PCH_DEV_SLOT_SIO4	0x19
+#define  PCH_DEVFN_I2C4		_PCH_DEVFN(SIO4, 0)
+#define  PCH_DEVFN_I2C5		_PCH_DEVFN(SIO4, 1)
+#define  PCH_DEVFN_UART2	_PCH_DEVFN(SIO4, 2)
+#define  PCH_DEV_I2C4		_PCH_DEV(SIO4, 0)
+#define  PCH_DEV_I2C5		_PCH_DEV(SIO4, 1)
+#define  PCH_DEV_UART2		_PCH_DEV(SIO4, 2)
+
+#define PCH_DEV_SLOT_STORAGE	0x1a
+#define  PCH_DEVFN_EMMC		_PCH_DEVFN(STORAGE, 0)
+#define  PCH_DEV_EMMC		_PCH_DEV(STORAGE, 0)
+
+#define PCH_DEV_SLOT_PCIE	0x1c
+#define  PCH_DEVFN_PCIE1	_PCH_DEVFN(PCIE, 0)
+#define  PCH_DEVFN_PCIE2	_PCH_DEVFN(PCIE, 1)
+#define  PCH_DEVFN_PCIE3	_PCH_DEVFN(PCIE, 2)
+#define  PCH_DEVFN_PCIE4	_PCH_DEVFN(PCIE, 3)
+#define  PCH_DEVFN_PCIE5	_PCH_DEVFN(PCIE, 4)
+#define  PCH_DEVFN_PCIE6	_PCH_DEVFN(PCIE, 5)
+#define  PCH_DEVFN_PCIE7	_PCH_DEVFN(PCIE, 6)
+#define  PCH_DEVFN_PCIE8	_PCH_DEVFN(PCIE, 7)
+#define  PCH_DEV_PCIE1		_PCH_DEV(PCIE, 0)
+#define  PCH_DEV_PCIE2		_PCH_DEV(PCIE, 1)
+#define  PCH_DEV_PCIE3		_PCH_DEV(PCIE, 2)
+#define  PCH_DEV_PCIE4		_PCH_DEV(PCIE, 3)
+#define  PCH_DEV_PCIE5		_PCH_DEV(PCIE, 4)
+#define  PCH_DEV_PCIE6		_PCH_DEV(PCIE, 5)
+#define  PCH_DEV_PCIE7		_PCH_DEV(PCIE, 6)
+#define  PCH_DEV_PCIE8		_PCH_DEV(PCIE, 7)
+
+#define PCH_DEV_SLOT_PCIE_1	0x1d
+#define  PCH_DEVFN_PCIE9	_PCH_DEVFN(PCIE_1, 0)
+#define  PCH_DEVFN_PCIE10	_PCH_DEVFN(PCIE_1, 1)
+#define  PCH_DEVFN_PCIE11	_PCH_DEVFN(PCIE_1, 2)
+#define  PCH_DEVFN_PCIE12	_PCH_DEVFN(PCIE_1, 3)
+#define  PCH_DEV_PCIE9		_PCH_DEV(PCIE_1, 0)
+#define  PCH_DEV_PCIE10		_PCH_DEV(PCIE_1, 1)
+#define  PCH_DEV_PCIE11		_PCH_DEV(PCIE_1, 2)
+#define  PCH_DEV_PCIE12		_PCH_DEV(PCIE_1, 3)
+
+#define PCH_DEV_SLOT_SIO5	0x1e
+#define  PCH_DEVFN_UART0	_PCH_DEVFN(SIO5, 0)
+#define  PCH_DEVFN_UART1	_PCH_DEVFN(SIO5, 1)
+#define  PCH_DEVFN_GSPI0	_PCH_DEVFN(SIO5, 2)
+#define  PCH_DEVFN_GSPI1	_PCH_DEVFN(SIO5, 3)
+#define  PCH_DEV_UART0		_PCH_DEV(SIO5, 0)
+#define  PCH_DEV_UART1		_PCH_DEV(SIO5, 1)
+#define  PCH_DEV_GSPI0		_PCH_DEV(SIO5, 2)
+#define  PCH_DEV_GSPI1		_PCH_DEV(SIO5, 3)
+
+#define PCH_DEV_SLOT_ESPI	0x1f
+#define PCH_DEV_SLOT_LPC	PCH_DEV_SLOT_ESPI
+#define  PCH_DEVFN_ESPI		_PCH_DEVFN(ESPI, 0)
+#define  PCH_DEVFN_P2SB		_PCH_DEVFN(ESPI, 1)
+#define  PCH_DEVFN_PMC		_PCH_DEVFN(ESPI, 2)
+#define  PCH_DEVFN_HDA		_PCH_DEVFN(ESPI, 3)
+#define  PCH_DEVFN_SMBUS	_PCH_DEVFN(ESPI, 4)
+#define  PCH_DEVFN_SPI		_PCH_DEVFN(ESPI, 5)
+#define  PCH_DEVFN_GBE		_PCH_DEVFN(ESPI, 6)
+#define  PCH_DEVFN_TRACEHUB	_PCH_DEVFN(ESPI, 7)
+#define  PCH_DEV_ESPI		_PCH_DEV(ESPI, 0)
+#define  PCH_DEV_LPC		PCH_DEV_ESPI
+#define  PCH_DEV_P2SB		_PCH_DEV(ESPI, 1)
+
+#if !ENV_RAMSTAGE
+/*
+ * PCH_DEV_PMC is intentionally not defined in RAMSTAGE since PMC device gets
+ * hidden from PCI bus after call to FSP-S. This leads to resource allocator
+ * dropping it from the root bus as unused device. All references to PCH_DEV_PMC
+ * would then return NULL and can go unnoticed if not handled properly. Since,
+ * this device does not have any special chip config associated with it, it is
+ * okay to not provide the definition for it in ramstage.
+ */
+#define  PCH_DEV_PMC		_PCH_DEV(ESPI, 2)
+#endif
+
+#define  PCH_DEV_HDA		_PCH_DEV(ESPI, 3)
+#define  PCH_DEV_SMBUS		_PCH_DEV(ESPI, 4)
+#define  PCH_DEV_SPI		_PCH_DEV(ESPI, 5)
+#define  PCH_DEV_GBE		_PCH_DEV(ESPI, 6)
+#define  PCH_DEV_TRACEHUB	_PCH_DEV(ESPI, 7)
+
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/pcr_ids.h b/src/soc/intel/elkhartlake/include/soc/pcr_ids.h
new file mode 100644
index 0000000000..c5c5b31ca2
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/pcr_ids.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef SOC_ELKHARTLAKE_PCR_H
+#define SOC_ELKHARTLAKE_PCR_H
+/*
+ * Port IDs
+ */
+#define PID_EMMC	0x51
+#define PID_SDX		0x53
+
+#define PID_GPIOCOM0	0x6e
+#define PID_GPIOCOM1	0x6d
+#define PID_GPIOCOM2	0x6c
+#define PID_GPIOCOM4	0x6a
+#define PID_GPIOCOM5	0x69
+
+#define PID_DMI		0x88
+#define PID_PSTH	0x89
+#define PID_CSME0	0x90
+#define PID_ISCLK	0xad
+#define PID_PSF1	0xba
+#define PID_PSF2	0xbb
+#define PID_PSF3	0xbc
+#define PID_PSF4	0xbd
+#define PID_SCS		0xc0
+#define PID_RTC		0xc3
+#define PID_ITSS	0xc4
+#define PID_ESPI	0xc7
+#define PID_SERIALIO	0xcb
+
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/pm.h b/src/soc/intel/elkhartlake/include/soc/pm.h
new file mode 100644
index 0000000000..11d6663b74
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/pm.h
@@ -0,0 +1,164 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_PM_H_
+#define _SOC_PM_H_
+
+#define PM1_STS			0x00
+#define  WAK_STS		(1 << 15)
+#define  PCIEXPWAK_STS		(1 << 14)
+#define  PRBTNOR_STS		(1 << 11)
+#define  RTC_STS		(1 << 10)
+#define  PWRBTN_STS		(1 << 8)
+#define  GBL_STS		(1 << 5)
+#define  BM_STS			(1 << 4)
+#define  TMROF_STS		(1 << 0)
+#define PM1_EN			0x02
+#define  PCIEXPWAK_DIS		(1 << 14)
+#define  RTC_EN			(1 << 10)
+#define  PWRBTN_EN		(1 << 8)
+#define  GBL_EN			(1 << 5)
+#define  TMROF_EN		(1 << 0)
+#define PM1_CNT			0x04
+#define  GBL_RLS		(1 << 2)
+#define  BM_RLD			(1 << 1)
+#define  SCI_EN			(1 << 0)
+#define PM1_TMR			0x08
+#define SMI_EN			0x30
+#define  XHCI_SMI_EN		(1 << 31)
+#define  ME_SMI_EN		(1 << 30)
+#define  ESPI_SMI_EN		(1 << 28)
+#define  GPIO_UNLOCK_SMI_EN	(1 << 27)
+#define  INTEL_USB2_EN		(1 << 18)
+#define  LEGACY_USB2_EN		(1 << 17)
+#define  PERIODIC_EN		(1 << 14)
+#define  TCO_SMI_EN		(1 << 13)
+#define  MCSMI_EN		(1 << 11)
+#define  BIOS_RLS		(1 <<  7)
+#define  SWSMI_TMR_EN		(1 <<  6)
+#define  APMC_EN		(1 <<  5)
+#define  SLP_SMI_EN		(1 <<  4)
+#define  LEGACY_USB_EN		(1 <<  3)
+#define  BIOS_EN		(1 <<  2)
+#define  EOS			(1 <<  1)
+#define  GBL_SMI_EN		(1 <<  0)
+#define SMI_STS			0x34
+#define  SMI_STS_BITS			32
+#define  XHCI_SMI_STS_BIT		31
+#define  ME_SMI_STS_BIT			30
+#define  ESPI_SMI_STS_BIT		28
+#define  GPIO_UNLOCK_SMI_STS_BIT	27
+#define  SPI_SMI_STS_BIT		26
+#define  SCC_SMI_STS_BIT		25
+#define  MONITOR_STS_BIT		21
+#define  PCI_EXP_SMI_STS_BIT		20
+#define  SMBUS_SMI_STS_BIT		16
+#define  SERIRQ_SMI_STS_BIT		15
+#define  PERIODIC_STS_BIT		14
+#define  TCO_STS_BIT			13
+#define  DEVMON_STS_BIT			12
+#define  MCSMI_STS_BIT			11
+#define  GPIO_STS_BIT			10
+#define  GPE0_STS_BIT			9
+#define  PM1_STS_BIT			8
+#define  SWSMI_TMR_STS_BIT		6
+#define  APM_STS_BIT			5
+#define  SMI_ON_SLP_EN_STS_BIT		4
+#define  LEGACY_USB_STS_BIT		3
+#define  BIOS_STS_BIT			2
+#define GPE_CNTL		0x42
+#define  SWGPE_CTRL		(1 << 1)
+#define DEVACT_STS		0x44
+#define PM2_CNT			0x50
+
+#define GPE0_REG_MAX		4
+#define GPE0_REG_SIZE		32
+#define GPE0_STS(x)		(0x60 + ((x) * 4))
+#define  GPE_31_0		0	/* 0x60/0x70 = GPE[31:0] */
+#define  GPE_63_32		1	/* 0x64/0x74 = GPE[63:32] */
+#define  GPE_95_64		2	/* 0x68/0x78 = GPE[95:64] */
+#define  GPE_STD		3	/* 0x6c/0x7c = Standard GPE */
+#define GPE_STS_RSVD            GPE_STD
+#define   WADT_STS		(1 << 18)
+#define   GPIO_T2_STS		(1 << 15)
+#define   ESPI_STS		(1 << 14)
+#define   PME_B0_STS		(1 << 13)
+#define   ME_SCI_STS		(1 << 12)
+#define   PME_STS		(1 << 11)
+#define   BATLOW_STS		(1 << 10)
+#define   PCI_EXP_STS		(1 << 9)
+#define   SMB_WAK_STS		(1 << 7)
+#define   TCOSCI_STS		(1 << 6)
+#define   SWGPE_STS		(1 << 2)
+#define   HOT_PLUG_STS		(1 << 1)
+#define GPE0_EN(x)		(0x70 + ((x) * 4))
+#define   WADT_EN		(1 << 18)
+#define   GPIO_T2_EN		(1 << 15)
+#define   ESPI_EN		(1 << 14)
+#define   PME_B0_EN_BIT		13
+#define   PME_B0_EN		(1 << PME_B0_EN_BIT)
+#define   ME_SCI_EN		(1 << 12)
+#define   PME_EN		(1 << 11)
+#define   BATLOW_EN		(1 << 10)
+#define   PCI_EXP_EN		(1 << 9)
+#define   TCOSCI_EN		(1 << 6)
+#define   SWGPE_EN		(1 << 2)
+#define   HOT_PLUG_EN		(1 << 1)
+
+#define EN_BLOCK		3
+
+/*
+ * Enable SMI generation:
+ *  - on APMC writes (io 0xb2)
+ *  - on writes to SLP_EN (sleep states)
+ *  - on writes to GBL_RLS (bios commands)
+ *  - on eSPI events (does nothing on LPC systems)
+ * No SMIs:
+ *  - on TCO events, unless enabled in common code
+ *  - on microcontroller writes (io 0x62/0x66)
+ */
+#define ENABLE_SMI_PARAMS \
+	(APMC_EN | SLP_SMI_EN | GBL_SMI_EN | ESPI_SMI_EN | EOS)
+
+#define	PSS_RATIO_STEP		2
+#define	PSS_MAX_ENTRIES		8
+#define	PSS_LATENCY_TRANSITION	10
+#define	PSS_LATENCY_BUSMASTER	10
+
+#if !defined(__ACPI__)
+
+#include <acpi/acpi.h>
+#include <soc/gpe.h>
+#include <soc/iomap.h>
+#include <soc/smbus.h>
+#include <soc/pmc.h>
+
+struct chipset_power_state {
+	uint16_t pm1_sts;
+	uint16_t pm1_en;
+	uint32_t pm1_cnt;
+	uint16_t tco1_sts;
+	uint16_t tco2_sts;
+	uint32_t gpe0_sts[4];
+	uint32_t gpe0_en[4];
+	uint32_t gen_pmcon_a;
+	uint32_t gen_pmcon_b;
+	uint32_t gblrst_cause[2];
+	uint32_t prev_sleep_state;
+} __packed;
+
+/* Get base address PMC memory mapped registers. */
+uint8_t *pmc_mmio_regs(void);
+
+/* Get base address of TCO I/O registers. */
+uint16_t smbus_tco_regs(void);
+
+/* Set the DISB after DRAM init */
+void pmc_set_disb(void);
+
+/* Clear PMCON status bits */
+void pmc_clear_pmcon_sts(void);
+
+/* STM Support */
+uint16_t get_pmbase(void);
+#endif /* !defined(__ACPI__) */
+#endif
diff --git a/src/soc/intel/elkhartlake/include/soc/smbus.h b/src/soc/intel/elkhartlake/include/soc/smbus.h
new file mode 100644
index 0000000000..0ea469c8c9
--- /dev/null
+++ b/src/soc/intel/elkhartlake/include/soc/smbus.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _SOC_ELKHARTLAKE_SMBUS_H_
+#define _SOC_ELKHARTLAKE_SMBUS_H_
+
+/* IO and MMIO registers under primary BAR */
+
+/* TCO registers and fields live behind TCOBASE I/O bar in SMBus device. */
+#define TCO1_STS			0x04
+#define  TCO_TIMEOUT			(1 << 3)
+#define TCO2_STS			0x06
+#define  TCO_STS_SECOND_TO		(1 << 1)
+#define  TCO_INTRD_DET			(1 << 0)
+#define TCO1_CNT			0x08
+#define  TCO_LOCK			(1 << 12)
+#define  TCO_TMR_HLT			(1 << 11)
+#define TCO2_CNT			0x0A
+#define  TCO_INTRD_SEL_MASK		(3 << 1)
+#define  TCO_INTRD_SEL_SMI		(1 << 2)
+#define  TCO_INTRD_SEL_INT		(1 << 1)
+
+/*
+ * Default slave address value for PCH. This value is set to match default
+ * value set by hardware. It is useful since PCH is able to respond even
+ * before CPU is up. This is reset by RSMRST# but not by PLTRST#.
+ */
+#define SMBUS_SLAVE_ADDR		0x44
+
+#endif