#
obj-$(CONFIG_HAVE_MRC) += car.o
+obj-y += cpu.o
obj-y += lpc.o
ifndef CONFIG_TARGET_EFI
obj-y += microcode.o
--- /dev/null
+/*
+ * Copyright (c) 2016 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/cpu_common.h>
+#include <asm/intel_regs.h>
+#include <asm/lapic.h>
+#include <asm/lpc_common.h>
+#include <asm/msr.h>
+#include <asm/mtrr.h>
+#include <asm/post.h>
+#include <asm/microcode.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int report_bist_failure(void)
+{
+ if (gd->arch.bist != 0) {
+ post_code(POST_BIST_FAILURE);
+ printf("BIST failed: %08x\n", gd->arch.bist);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+int cpu_common_init(void)
+{
+ struct udevice *dev, *lpc;
+ int ret;
+
+ /* Halt if there was a built in self test failure */
+ ret = report_bist_failure();
+ if (ret)
+ return ret;
+
+ enable_lapic();
+
+ ret = microcode_update_intel();
+ if (ret && ret != -EEXIST)
+ return ret;
+
+ /* Enable upper 128bytes of CMOS */
+ writel(1 << 2, RCB_REG(RC));
+
+ /* Early chipset init required before RAM init can work */
+ uclass_first_device(UCLASS_NORTHBRIDGE, &dev);
+
+ ret = uclass_first_device(UCLASS_LPC, &lpc);
+ if (ret)
+ return ret;
+ if (!lpc)
+ return -ENODEV;
+
+ /* Cause the SATA device to do its early init */
+ uclass_first_device(UCLASS_DISK, &dev);
+
+ return 0;
+}
+
+int cpu_set_flex_ratio_to_tdp_nominal(void)
+{
+ msr_t flex_ratio, msr;
+ u8 nominal_ratio;
+
+ /* Check for Flex Ratio support */
+ flex_ratio = msr_read(MSR_FLEX_RATIO);
+ if (!(flex_ratio.lo & FLEX_RATIO_EN))
+ return -EINVAL;
+
+ /* Check for >0 configurable TDPs */
+ msr = msr_read(MSR_PLATFORM_INFO);
+ if (((msr.hi >> 1) & 3) == 0)
+ return -EINVAL;
+
+ /* Use nominal TDP ratio for flex ratio */
+ msr = msr_read(MSR_CONFIG_TDP_NOMINAL);
+ nominal_ratio = msr.lo & 0xff;
+
+ /* See if flex ratio is already set to nominal TDP ratio */
+ if (((flex_ratio.lo >> 8) & 0xff) == nominal_ratio)
+ return 0;
+
+ /* Set flex ratio to nominal TDP ratio */
+ flex_ratio.lo &= ~0xff00;
+ flex_ratio.lo |= nominal_ratio << 8;
+ flex_ratio.lo |= FLEX_RATIO_LOCK;
+ msr_write(MSR_FLEX_RATIO, flex_ratio);
+
+ /* Set flex ratio in soft reset data register bits 11:6 */
+ clrsetbits_le32(RCB_REG(SOFT_RESET_DATA), 0x3f << 6,
+ (nominal_ratio & 0x3f) << 6);
+
+ debug("CPU: Soft reset to set up flex ratio\n");
+
+ /* Set soft reset control to use register value */
+ setbits_le32(RCB_REG(SOFT_RESET_CTRL), 1);
+
+ /* Issue warm reset, will be "CPU only" due to soft reset data */
+ outb(0x0, PORT_RESET);
+ outb(SYS_RST | RST_CPU, PORT_RESET);
+ cpu_hlt();
+
+ /* Not reached */
+ return -EINVAL;
+}
#include <fdtdec.h>
#include <pch.h>
#include <asm/cpu.h>
+#include <asm/cpu_common.h>
#include <asm/intel_regs.h>
#include <asm/io.h>
#include <asm/lapic.h>
static int set_flex_ratio_to_tdp_nominal(void)
{
- msr_t flex_ratio, msr;
- u8 nominal_ratio;
-
/* Minimum CPU revision for configurable TDP support */
if (cpuid_eax(1) < IVB_CONFIG_TDP_MIN_CPUID)
return -EINVAL;
- /* Check for Flex Ratio support */
- flex_ratio = msr_read(MSR_FLEX_RATIO);
- if (!(flex_ratio.lo & FLEX_RATIO_EN))
- return -EINVAL;
-
- /* Check for >0 configurable TDPs */
- msr = msr_read(MSR_PLATFORM_INFO);
- if (((msr.hi >> 1) & 3) == 0)
- return -EINVAL;
-
- /* Use nominal TDP ratio for flex ratio */
- msr = msr_read(MSR_CONFIG_TDP_NOMINAL);
- nominal_ratio = msr.lo & 0xff;
-
- /* See if flex ratio is already set to nominal TDP ratio */
- if (((flex_ratio.lo >> 8) & 0xff) == nominal_ratio)
- return 0;
-
- /* Set flex ratio to nominal TDP ratio */
- flex_ratio.lo &= ~0xff00;
- flex_ratio.lo |= nominal_ratio << 8;
- flex_ratio.lo |= FLEX_RATIO_LOCK;
- msr_write(MSR_FLEX_RATIO, flex_ratio);
-
- /* Set flex ratio in soft reset data register bits 11:6 */
- clrsetbits_le32(RCB_REG(SOFT_RESET_DATA), 0x3f << 6,
- (nominal_ratio & 0x3f) << 6);
-
- /* Set soft reset control to use register value */
- setbits_le32(RCB_REG(SOFT_RESET_CTRL), 1);
-
- /* Issue warm reset, will be "CPU only" due to soft reset data */
- outb(0x0, PORT_RESET);
- outb(SYS_RST | RST_CPU, PORT_RESET);
- cpu_hlt();
-
- /* Not reached */
- return -EINVAL;
+ return cpu_set_flex_ratio_to_tdp_nominal();
}
int arch_cpu_init(void)
pci_bus_write_config(bus, usb3, PCI_COMMAND, cmd, PCI_SIZE_32);
}
-static int report_bist_failure(void)
-{
- if (gd->arch.bist != 0) {
- post_code(POST_BIST_FAILURE);
- printf("BIST failed: %08x\n", gd->arch.bist);
- return -EFAULT;
- }
-
- return 0;
-}
-
int print_cpuinfo(void)
{
enum pei_boot_mode_t boot_mode = PEI_BOOT_NONE;
uint16_t pm1_sts;
int ret;
- /* Halt if there was a built in self test failure */
- ret = report_bist_failure();
- if (ret)
- return ret;
-
- enable_lapic();
-
- ret = microcode_update_intel();
- if (ret)
- return ret;
-
- /* Enable upper 128bytes of CMOS */
- writel(1 << 2, RCB_REG(RC));
-
/* TODO: cmos_post_init() */
if (readl(MCHBAR_REG(SSKPD)) == 0xCAFE) {
debug("soft reset detected\n");
reset_cpu(0);
}
- /* Early chipset init required before RAM init can work */
- uclass_first_device(UCLASS_NORTHBRIDGE, &dev);
-
- ret = uclass_first_device_err(UCLASS_LPC, &lpc);
+ ret = cpu_common_init();
if (ret)
return ret;
- /* Cause the SATA device to do its early init */
- uclass_first_device(UCLASS_DISK, &dev);
-
/* Check PM1_STS[15] to see if we are waking from Sx */
pm1_sts = inw(DEFAULT_PMBASE + PM1_STS);
return ret;
/* Prepare USB controller early in S3 resume */
- if (boot_mode == PEI_BOOT_RESUME)
+ if (boot_mode == PEI_BOOT_RESUME) {
+ uclass_first_device(UCLASS_LPC, &lpc);
enable_usb_bar(pci_get_controller(lpc->parent));
+ }
gd->arch.pei_boot_mode = boot_mode;
#define SPI_FREQ_SWSEQ 0x3893
#define SPI_DESC_COMP0 0x38b0
#define SPI_FREQ_WR_ERA 0x38b4
-#define SOFT_RESET_CTRL 0x38f4
-#define SOFT_RESET_DATA 0x38f8
#define DIR_ROUTE(a, b, c, d) \
(((d) << DIR_IDR) | ((c) << DIR_ICR) | \
--- /dev/null
+/*
+ * Copyright (c) 2016 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#ifndef __ASM_CPU_COMMON_H
+#define __ASM_CPU_COMMON_H
+
+#define IA32_PERF_CTL 0x199
+
+/**
+ * cpu_common_init() - Set up common CPU init
+ *
+ * This reports BIST failure, enables the LAPIC, updates microcode, enables
+ * the upper 128-bytes of CROM RAM, probes the northbridge, PCH, LPC and SATA.
+ *
+ * @return 0 if OK, -ve on error
+ */
+int cpu_common_init(void);
+
+/**
+ * cpu_set_flex_ratio_to_tdp_nominal() - Set up the maximum non-turbo rate
+ *
+ * If a change is needed, this function will do a soft reset so it takes
+ * effect.
+ *
+ * Some details are available here:
+ * http://forum.hwbot.org/showthread.php?t=76092
+ *
+ * @return 0 if OK, -ve on error
+ */
+int cpu_set_flex_ratio_to_tdp_nominal(void);
+
+#endif
#define MCH_BASE_SIZE 0x8000
#define MCHBAR_REG(reg) (MCH_BASE_ADDRESS + (reg))
+#define MCHBAR_PEI_VERSION 0x5034
+#define MCH_PKG_POWER_LIMIT_LO 0x59a0
+#define MCH_PKG_POWER_LIMIT_HI 0x59a4
+#define MCH_DDR_POWER_LIMIT_LO 0x58e0
+#define MCH_DDR_POWER_LIMIT_HI 0x58e4
+
/* Access the Root Complex Register Block */
#define RCB_BASE_ADDRESS 0xfed1c000
#define RCB_REG(reg) (RCB_BASE_ADDRESS + (reg))
+#define SOFT_RESET_CTRL 0x38f4
+#define SOFT_RESET_DATA 0x38f8
+
#endif
projects / platform / kernel / u-boot.git / commitdiff