1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2014 Google, Inc
7 * Some portions from coreboot src/mainboard/google/link/romstage.c
8 * and src/cpu/intel/model_206ax/bootblock.c
9 * Copyright (C) 2007-2010 coresystems GmbH
10 * Copyright (C) 2011 Google Inc.
22 #include <asm/cpu_common.h>
23 #include <asm/global_data.h>
24 #include <asm/intel_regs.h>
26 #include <asm/lapic.h>
27 #include <asm/lpc_common.h>
28 #include <asm/microcode.h>
33 #include <asm/processor.h>
34 #include <asm/arch/model_206ax.h>
35 #include <asm/arch/pch.h>
36 #include <asm/arch/sandybridge.h>
38 DECLARE_GLOBAL_DATA_PTR;
40 static int set_flex_ratio_to_tdp_nominal(void)
42 /* Minimum CPU revision for configurable TDP support */
43 if (cpuid_eax(1) < IVB_CONFIG_TDP_MIN_CPUID)
46 return cpu_set_flex_ratio_to_tdp_nominal();
49 int arch_cpu_init(void)
51 post_code(POST_CPU_INIT);
53 return x86_cpu_init_f();
56 static int ivybridge_cpu_init(void)
58 struct pci_controller *hose;
59 struct udevice *bus, *dev;
63 ret = uclass_get_device(UCLASS_PCI, 0, &bus);
68 hose = dev_get_uclass_priv(bus);
73 ret = uclass_first_device_err(UCLASS_LPC, &dev);
78 * We should do as little as possible before the serial console is
79 * up. Perhaps this should move to later. Our next lot of init
80 * happens in checkcpu() when we have a console
82 ret = set_flex_ratio_to_tdp_nominal();
88 EVENT_SPY_SIMPLE(EVT_DM_POST_INIT_F, ivybridge_cpu_init);
90 #define PCH_EHCI0_TEMP_BAR0 0xe8000000
91 #define PCH_EHCI1_TEMP_BAR0 0xe8000400
92 #define PCH_XHCI_TEMP_BAR0 0xe8001000
95 * Setup USB controller MMIO BAR to prevent the reference code from
96 * resetting the controller.
98 * The BAR will be re-assigned during device enumeration so these are only
101 * This is used to speed up the resume path.
103 static void enable_usb_bar(struct udevice *bus)
105 pci_dev_t usb0 = PCH_EHCI1_DEV;
106 pci_dev_t usb1 = PCH_EHCI2_DEV;
107 pci_dev_t usb3 = PCH_XHCI_DEV;
110 /* USB Controller 1 */
111 pci_bus_write_config(bus, usb0, PCI_BASE_ADDRESS_0,
112 PCH_EHCI0_TEMP_BAR0, PCI_SIZE_32);
113 pci_bus_read_config(bus, usb0, PCI_COMMAND, &cmd, PCI_SIZE_32);
114 cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
115 pci_bus_write_config(bus, usb0, PCI_COMMAND, cmd, PCI_SIZE_32);
117 /* USB Controller 2 */
118 pci_bus_write_config(bus, usb1, PCI_BASE_ADDRESS_0,
119 PCH_EHCI1_TEMP_BAR0, PCI_SIZE_32);
120 pci_bus_read_config(bus, usb1, PCI_COMMAND, &cmd, PCI_SIZE_32);
121 cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
122 pci_bus_write_config(bus, usb1, PCI_COMMAND, cmd, PCI_SIZE_32);
124 /* USB3 Controller 1 */
125 pci_bus_write_config(bus, usb3, PCI_BASE_ADDRESS_0,
126 PCH_XHCI_TEMP_BAR0, PCI_SIZE_32);
127 pci_bus_read_config(bus, usb3, PCI_COMMAND, &cmd, PCI_SIZE_32);
128 cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
129 pci_bus_write_config(bus, usb3, PCI_COMMAND, cmd, PCI_SIZE_32);
134 enum pei_boot_mode_t boot_mode = PEI_BOOT_NONE;
135 struct udevice *dev, *lpc;
140 /* TODO: cmos_post_init() */
141 if (readl(MCHBAR_REG(SSKPD)) == 0xCAFE) {
142 debug("soft reset detected\n");
143 boot_mode = PEI_BOOT_SOFT_RESET;
145 /* System is not happy after keyboard reset... */
146 debug("Issuing CF9 warm reset\n");
150 ret = cpu_common_init();
152 debug("%s: cpu_common_init() failed\n", __func__);
156 /* Check PM1_STS[15] to see if we are waking from Sx */
157 pm1_sts = inw(DEFAULT_PMBASE + PM1_STS);
159 /* Read PM1_CNT[12:10] to determine which Sx state */
160 pm1_cnt = inl(DEFAULT_PMBASE + PM1_CNT);
162 if ((pm1_sts & WAK_STS) && ((pm1_cnt >> 10) & 7) == 5) {
163 debug("Resume from S3 detected, but disabled.\n");
166 * TODO: An indication of life might be possible here (e.g.
170 post_code(POST_EARLY_INIT);
172 /* Enable SPD ROMs and DDR-III DRAM */
173 ret = uclass_first_device_err(UCLASS_I2C, &dev);
175 debug("%s: Failed to get I2C (ret=%d)\n", __func__, ret);
179 /* Prepare USB controller early in S3 resume */
180 if (boot_mode == PEI_BOOT_RESUME) {
181 uclass_first_device(UCLASS_LPC, &lpc);
182 enable_usb_bar(pci_get_controller(lpc->parent));
185 gd->arch.pei_boot_mode = boot_mode;
190 int print_cpuinfo(void)
192 char processor_name[CPU_MAX_NAME_LEN];
195 /* Print processor name */
196 name = cpu_get_name(processor_name);
197 printf("CPU: %s\n", name);
199 post_code(POST_CPU_INFO);
204 void board_debug_uart_init(void)
206 /* This enables the debug UART */
207 pci_x86_write_config(PCH_LPC_DEV, LPC_EN, COMA_LPC_EN, PCI_SIZE_16);