Add required init for the Intel Platform Controller Hub in ivybridge.
Signed-off-by: Simon Glass <s...@chromium.org>
---
arch/x86/cpu/ivybridge/Makefile | 1 +
arch/x86/cpu/ivybridge/pch.c | 123 ++++++++++++++++++++++++++++++
arch/x86/include/asm/arch-ivybridge/pch.h | 49 ++++++++++++
3 files changed, 173 insertions(+)
create mode 100644 arch/x86/cpu/ivybridge/pch.c
diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile
index b37fb8f..479e446 100644
--- a/arch/x86/cpu/ivybridge/Makefile
+++ b/arch/x86/cpu/ivybridge/Makefile
@@ -12,6 +12,7 @@ obj-y += early_me.o
obj-y += lpc.o
obj-y += me_status.o
obj-y += microcode_intel.o
+obj-y += pch.o
obj-y += pci.o
obj-y += report_platform.o
obj-y += sdram.o
diff --git a/arch/x86/cpu/ivybridge/pch.c b/arch/x86/cpu/ivybridge/pch.c
new file mode 100644
index 0000000..fa04d48
--- /dev/null
+++ b/arch/x86/cpu/ivybridge/pch.c
@@ -0,0 +1,123 @@
+/*
+ * From Coreboot
+ * Copyright (C) 2008-2009 coresystems GmbH
+ * Copyright (C) 2012 The Chromium OS Authors.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/pci.h>
+#include <asm/arch/pch.h>
+
+static int pch_revision_id = -1;
+static int pch_type = -1;
+
+int pch_silicon_revision(void)
+{
+ pci_dev_t dev;
+
+ dev = PCH_LPC_DEV;
+
+ if (pch_revision_id < 0)
+ pch_revision_id = pci_read_config8(dev, PCI_REVISION_ID);
+ return pch_revision_id;
+}
+
+int pch_silicon_type(void)
+{
+ pci_dev_t dev;
+
+ dev = PCH_LPC_DEV;
+
+ if (pch_type < 0)
+ pch_type = pci_read_config8(dev, PCI_DEVICE_ID + 1);
+ return pch_type;
+}
+
+int pch_silicon_supported(int type, int rev)
+{
+ int cur_type = pch_silicon_type();
+ int cur_rev = pch_silicon_revision();
+
+ switch (type) {
+ case PCH_TYPE_CPT:
+ /* CougarPoint minimum revision */
+ if (cur_type == PCH_TYPE_CPT && cur_rev >= rev)
+ return 1;
+ /* PantherPoint any revision */
+ if (cur_type == PCH_TYPE_PPT)
+ return 1;
+ break;
+
+ case PCH_TYPE_PPT:
+ /* PantherPoint minimum revision */
+ if (cur_type == PCH_TYPE_PPT && cur_rev >= rev)
+ return 1;
+ break;
+ }
+
+ return 0;
+}
+
+#define IOBP_RETRY 1000
+static inline int iobp_poll(void)
+{
+ unsigned try = IOBP_RETRY;
+ u32 data;
+
+ while (try--) {
+ data = readl(RCB_REG(IOBPS));
+ if ((data & 1) == 0)
+ return 1;
+ udelay(10);
+ }
+
+ printf("IOBP timeout\n");
+ return 0;
+}
+
+void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue)
+{
+ u32 data;
+
+ /* Set the address */
+ writel(address, RCB_REG(IOBPIRI));
+
+ /* READ OPCODE */
+ if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0))
+ writel(IOBPS_RW_BX, RCB_REG(IOBPS));
+ else
+ writel(IOBPS_READ_AX, RCB_REG(IOBPS));
+ if (!iobp_poll())
+ return;
+
+ /* Read IOBP data */
+ data = readl(RCB_REG(IOBPD));
+ if (!iobp_poll())
+ return;
+
+ /* Check for successful transaction */
+ if ((readl(RCB_REG(IOBPS)) & 0x6) != 0) {
+ printf("IOBP read 0x%08x failed\n", address);
+ return;
+ }
+
+ /* Update the data */
+ data &= andvalue;
+ data |= orvalue;
+
+ /* WRITE OPCODE */
+ if (pch_silicon_supported(PCH_TYPE_CPT, PCH_STEP_B0))
+ writel(IOBPS_RW_BX, RCB_REG(IOBPS));
+ else
+ writel(IOBPS_WRITE_AX, RCB_REG(IOBPS));
+ if (!iobp_poll())
+ return;
+
+ /* Write IOBP data */
+ writel(data, RCB_REG(IOBPD));
+ if (!iobp_poll())
+ return;
+}
diff --git a/arch/x86/include/asm/arch-ivybridge/pch.h
b/arch/x86/include/asm/arch-ivybridge/pch.h
index aa626ad..b3ec7c5 100644
--- a/arch/x86/include/asm/arch-ivybridge/pch.h
+++ b/arch/x86/include/asm/arch-ivybridge/pch.h
@@ -14,11 +14,31 @@
#include <pci.h>
+/* PCH types */
+#define PCH_TYPE_CPT 0x1c /* CougarPoint */
+#define PCH_TYPE_PPT 0x1e /* IvyBridge */
+
+/* PCH stepping values for LPC device */
+#define PCH_STEP_A0 0
+#define PCH_STEP_A1 1
+#define PCH_STEP_B0 2
+#define PCH_STEP_B1 3
+#define PCH_STEP_B2 4
+#define PCH_STEP_B3 5
#define DEFAULT_GPIOBASE 0x0480
#define DEFAULT_PMBASE 0x0500
#define SMBUS_IO_BASE 0x0400
+int pch_silicon_revision(void);
+int pch_silicon_type(void);
+int pch_silicon_supported(int type, int rev);
+void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
+
+#define MAINBOARD_POWER_OFF 0
+#define MAINBOARD_POWER_ON 1
+#define MAINBOARD_POWER_KEEP 2
+
/* PCI Configuration Space (D30:F0): PCI2PCI */
#define PSTS 0x06
#define SMLT 0x1b
@@ -40,6 +60,35 @@
/* PCI Configuration Space (D31:F0): LPC */
#define PCH_LPC_DEV PCI_BDF(0, 0x1f, 0)
+#define SERIRQ_CNTL 0x64
+
+#define GEN_PMCON_1 0xa0
+#define GEN_PMCON_2 0xa2
+#define GEN_PMCON_3 0xa4
+#define ETR3 0xac
+#define ETR3_CWORWRE (1 << 18)
+#define ETR3_CF9GR (1 << 20)
+
+/* GEN_PMCON_3 bits */
+#define RTC_BATTERY_DEAD (1 << 2)
+#define RTC_POWER_FAILED (1 << 1)
+#define SLEEP_AFTER_POWER_FAIL (1 << 0)
+
+#define PMBASE 0x40
+#define ACPI_CNTL 0x44
+#define BIOS_CNTL 0xDC
+#define GPIO_BASE 0x48 /* LPC GPIO Base Address Register */
+#define GPIO_CNTL 0x4C /* LPC GPIO Control Register */
+#define GPIO_ROUT 0xb8
+
+#define PIRQA_ROUT 0x60
+#define PIRQB_ROUT 0x61
+#define PIRQC_ROUT 0x62
+#define PIRQD_ROUT 0x63
+#define PIRQE_ROUT 0x68
+#define PIRQF_ROUT 0x69
+#define PIRQG_ROUT 0x6A
+#define PIRQH_ROUT 0x6B
#define GEN_PMCON_1 0xa0
#define GEN_PMCON_2 0xa2
--
2.1.0.rc2.206.gedb03e5
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