x86: broadwell: Add a PCH driver

Add a driver for the broadwell low-power platform controller hub.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 153 insertions, 0 deletions

diff --git a/arch/x86/include/asm/arch-broadwell/pch.h b/arch/x86/include/asm/arch-broadwell/pch.h
new file mode 100644
index 0000000000..3e346adfdc
--- /dev/null
+++ b/arch/x86/include/asm/arch-broadwell/pch.h
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2016 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef __ASM_ARCH_PCH_H
+#define __ASM_ARCH_PCH_H
+
+/* CPU bus clock is fixed at 100MHz */
+#define CPU_BCLK		100
+
+#define PMBASE			0x40
+#define ACPI_CNTL		0x44
+#define  ACPI_EN		(1 << 7)
+
+#define GPIO_BASE		0x48 /* LPC GPIO Base Address Register */
+#define GPIO_CNTL		0x4C /* LPC GPIO Control Register */
+#define  GPIO_EN		(1 << 4)
+
+#define PCIEXBAR	0x60
+
+#define  PCH_DEV_LPC		PCI_BDF(0, 0x1f, 0)
+
+/* RCB registers */
+#define OIC		0x31fe	/* 16bit */
+#define HPTC		0x3404	/* 32bit */
+#define FD		0x3418	/* 32bit */
+
+/* Function Disable 1 RCBA 0x3418 */
+#define PCH_DISABLE_ALWAYS	(1 << 0)
+
+/* PM registers */
+#define TCO1_CNT		0x60
+#define  TCO_TMR_HLT		(1 << 11)
+
+
+/* Device 0:0.0 PCI configuration space */
+
+#define EPBAR		0x40
+#define MCHBAR		0x48
+#define PCIEXBAR	0x60
+#define DMIBAR		0x68
+#define GGC		0x50	/* GMCH Graphics Control */
+#define DEVEN		0x54	/* Device Enable */
+#define  DEVEN_D7EN	(1 << 14)
+#define  DEVEN_D4EN	(1 << 7)
+#define  DEVEN_D3EN	(1 << 5)
+#define  DEVEN_D2EN	(1 << 4)
+#define  DEVEN_D1F0EN	(1 << 3)
+#define  DEVEN_D1F1EN	(1 << 2)
+#define  DEVEN_D1F2EN	(1 << 1)
+#define  DEVEN_D0EN	(1 << 0)
+#define DPR		0x5c
+#define  DPR_EPM	(1 << 2)
+#define  DPR_PRS	(1 << 1)
+#define  DPR_SIZE_MASK	0xff0
+
+#define MCHBAR_PEI_VERSION	0x5034
+#define BIOS_RESET_CPL		0x5da8
+#define EDRAMBAR		0x5408
+#define MCH_PAIR		0x5418
+#define GDXCBAR			0x5420
+
+#define PAM0		0x80
+#define PAM1		0x81
+#define PAM2		0x82
+#define PAM3		0x83
+#define PAM4		0x84
+#define PAM5		0x85
+#define PAM6		0x86
+
+/* PCODE MMIO communications live in the MCHBAR. */
+#define BIOS_MAILBOX_INTERFACE			0x5da4
+#define  MAILBOX_RUN_BUSY			(1 << 31)
+#define  MAILBOX_BIOS_CMD_READ_PCS		1
+#define  MAILBOX_BIOS_CMD_WRITE_PCS		2
+#define  MAILBOX_BIOS_CMD_READ_CALIBRATION	0x509
+#define  MAILBOX_BIOS_CMD_FSM_MEASURE_INTVL	0x909
+#define  MAILBOX_BIOS_CMD_READ_PCH_POWER	0xa
+#define  MAILBOX_BIOS_CMD_READ_PCH_POWER_EXT	0xb
+#define  MAILBOX_BIOS_CMD_READ_C9C10_VOLTAGE	0x26
+#define  MAILBOX_BIOS_CMD_WRITE_C9C10_VOLTAGE	0x27
+/* Errors are returned back in bits 7:0. */
+#define  MAILBOX_BIOS_ERROR_NONE		0
+#define  MAILBOX_BIOS_ERROR_INVALID_COMMAND	1
+#define  MAILBOX_BIOS_ERROR_TIMEOUT		2
+#define  MAILBOX_BIOS_ERROR_ILLEGAL_DATA	3
+#define  MAILBOX_BIOS_ERROR_RESERVED		4
+#define  MAILBOX_BIOS_ERROR_ILLEGAL_VR_ID	5
+#define  MAILBOX_BIOS_ERROR_VR_INTERFACE_LOCKED	6
+#define  MAILBOX_BIOS_ERROR_VR_ERROR		7
+/* Data is passed through bits 31:0 of the data register. */
+#define BIOS_MAILBOX_DATA			0x5da0
+
+/* SATA IOBP Registers */
+#define SATA_IOBP_SP0_SECRT88	0xea002688
+#define SATA_IOBP_SP1_SECRT88	0xea002488
+
+#define SATA_SECRT88_VADJ_MASK	0xff
+#define SATA_SECRT88_VADJ_SHIFT	16
+
+#define SATA_IOBP_SP0DTLE_DATA	0xea002550
+#define SATA_IOBP_SP0DTLE_EDGE	0xea002554
+#define SATA_IOBP_SP1DTLE_DATA	0xea002750
+#define SATA_IOBP_SP1DTLE_EDGE	0xea002754
+
+#define SATA_DTLE_MASK		0xF
+#define SATA_DTLE_DATA_SHIFT	24
+#define SATA_DTLE_EDGE_SHIFT	16
+
+/* Power Management */
+#define GEN_PMCON_1		0xa0
+#define  SMI_LOCK		(1 << 4)
+#define GEN_PMCON_2		0xa2
+#define  SYSTEM_RESET_STS	(1 << 4)
+#define  THERMTRIP_STS		(1 << 3)
+#define  SYSPWR_FLR		(1 << 1)
+#define  PWROK_FLR		(1 << 0)
+#define GEN_PMCON_3		0xa4
+#define  SUS_PWR_FLR		(1 << 14)
+#define  GEN_RST_STS		(1 << 9)
+#define  RTC_BATTERY_DEAD	(1 << 2)
+#define  PWR_FLR		(1 << 1)
+#define  SLEEP_AFTER_POWER_FAIL	(1 << 0)
+#define GEN_PMCON_LOCK		0xa6
+#define  SLP_STR_POL_LOCK	(1 << 2)
+#define  ACPI_BASE_LOCK		(1 << 1)
+#define PMIR			0xac
+#define  PMIR_CF9LOCK		(1 << 31)
+#define  PMIR_CF9GR		(1 << 20)
+
+/* Broadwell PCH (Wildcat Point) */
+#define PCH_WPT_HSW_U_SAMPLE	0x9cc1
+#define PCH_WPT_BDW_U_SAMPLE	0x9cc2
+#define PCH_WPT_BDW_U_PREMIUM	0x9cc3
+#define PCH_WPT_BDW_U_BASE	0x9cc5
+#define PCH_WPT_BDW_Y_SAMPLE	0x9cc6
+#define PCH_WPT_BDW_Y_PREMIUM	0x9cc7
+#define PCH_WPT_BDW_Y_BASE	0x9cc9
+#define PCH_WPT_BDW_H		0x9ccb
+
+#define SA_IGD_OPROM_VENDEV	0x80860406
+
+/* Dynamically determine if the part is ULT */
+bool cpu_is_ult(void);
+
+u32 pch_iobp_read(u32 address);
+int pch_iobp_write(u32 address, u32 data);
+int pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
+int  pch_iobp_exec(u32 addr, u16 op_dcode, u8 route_id, u32 *data, u8 *resp);
+
+#endif