Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2013 Google, Inc. |
Lee Leahy | 3247172 | 2015-04-20 15:20:28 -0700 | [diff] [blame] | 5 | * Copyright (C) 2015 Intel Corp. |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 6 | * Copyright (C) 2018 Eltan B.V. |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; version 2 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
Marshall Dawson | e8c527e | 2017-01-13 14:23:49 -0700 | [diff] [blame] | 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 16 | */ |
| 17 | |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 18 | #include <bootblock_common.h> |
| 19 | #include <build.h> |
| 20 | #include <console/console.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 21 | #include <device/pci_ops.h> |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 22 | #include <pc80/mc146818rtc.h> |
| 23 | #include <soc/bootblock.h> |
| 24 | #include <soc/gpio.h> |
| 25 | #include <soc/iomap.h> |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 26 | #include <soc/iosf.h> |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 27 | #include <soc/lpc.h> |
| 28 | #include <soc/pm.h> |
| 29 | #include <soc/spi.h> |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 30 | |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 31 | asmlinkage void bootblock_c_entry(uint64_t base_timestamp) |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 32 | { |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 33 | /* Call lib/bootblock.c main */ |
Kyösti Mälkki | 101ef0b | 2019-08-18 06:58:42 +0300 | [diff] [blame] | 34 | bootblock_main_with_basetime(base_timestamp); |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 35 | } |
| 36 | |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 37 | static void program_base_addresses(void) |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 38 | { |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 39 | uint32_t reg; |
| 40 | const uint32_t lpc_dev = PCI_DEV(0, LPC_DEV, LPC_FUNC); |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 41 | |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 42 | /* Memory Mapped IO registers. */ |
| 43 | reg = PMC_BASE_ADDRESS | 2; |
| 44 | pci_write_config32(lpc_dev, PBASE, reg); |
| 45 | reg = IO_BASE_ADDRESS | 2; |
| 46 | pci_write_config32(lpc_dev, IOBASE, reg); |
| 47 | reg = ILB_BASE_ADDRESS | 2; |
| 48 | pci_write_config32(lpc_dev, IBASE, reg); |
| 49 | reg = SPI_BASE_ADDRESS | 2; |
| 50 | pci_write_config32(lpc_dev, SBASE, reg); |
| 51 | reg = MPHY_BASE_ADDRESS | 2; |
| 52 | pci_write_config32(lpc_dev, MPBASE, reg); |
| 53 | reg = PUNIT_BASE_ADDRESS | 2; |
| 54 | pci_write_config32(lpc_dev, PUBASE, reg); |
| 55 | reg = RCBA_BASE_ADDRESS | 1; |
| 56 | pci_write_config32(lpc_dev, RCBA, reg); |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 57 | |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 58 | /* IO Port Registers. */ |
| 59 | reg = ACPI_BASE_ADDRESS | 2; |
| 60 | pci_write_config32(lpc_dev, ABASE, reg); |
| 61 | reg = GPIO_BASE_ADDRESS | 2; |
| 62 | pci_write_config32(lpc_dev, GBASE, reg); |
| 63 | } |
| 64 | |
| 65 | static void tco_disable(void) |
| 66 | { |
| 67 | uint32_t reg; |
| 68 | |
| 69 | reg = inl(ACPI_BASE_ADDRESS + TCO1_CNT); |
| 70 | reg |= TCO_TMR_HALT; |
| 71 | outl(reg, ACPI_BASE_ADDRESS + TCO1_CNT); |
| 72 | } |
| 73 | |
| 74 | static void spi_init(void) |
| 75 | { |
| 76 | void *scs = (void *)(SPI_BASE_ADDRESS + SCS); |
| 77 | void *bcr = (void *)(SPI_BASE_ADDRESS + BCR); |
| 78 | uint32_t reg; |
| 79 | |
| 80 | /* Disable generating SMI when setting WPD bit. */ |
| 81 | write32(scs, read32(scs) & ~SMIWPEN); |
| 82 | /* |
| 83 | * Enable caching and prefetching in the SPI controller. Disable |
| 84 | * the SMM-only BIOS write and set WPD bit. |
| 85 | */ |
| 86 | reg = (read32(bcr) & ~SRC_MASK) | SRC_CACHE_PREFETCH | BCR_WPD; |
| 87 | reg &= ~EISS; |
| 88 | write32(bcr, reg); |
| 89 | } |
| 90 | |
| 91 | static void soc_rtc_init(void) |
| 92 | { |
| 93 | int rtc_failed = rtc_failure(); |
| 94 | |
| 95 | if (rtc_failed) { |
| 96 | printk(BIOS_ERR, |
| 97 | "RTC Failure detected. Resetting date to %x/%x/%x%x\n", |
| 98 | COREBOOT_BUILD_MONTH_BCD, |
| 99 | COREBOOT_BUILD_DAY_BCD, |
| 100 | 0x20, |
| 101 | COREBOOT_BUILD_YEAR_BCD); |
| 102 | } |
| 103 | |
| 104 | cmos_init(rtc_failed); |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | static void setup_mmconfig(void) |
| 108 | { |
| 109 | uint32_t reg; |
| 110 | |
Lee Leahy | 3247172 | 2015-04-20 15:20:28 -0700 | [diff] [blame] | 111 | /* |
| 112 | * Set up the MMCONF range. The register lives in the BUNIT. The |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 113 | * IO variant of the config access needs to be used initially to |
| 114 | * properly configure as the IOSF access registers live in PCI |
Lee Leahy | 3247172 | 2015-04-20 15:20:28 -0700 | [diff] [blame] | 115 | * config space. |
| 116 | */ |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 117 | reg = 0; |
| 118 | /* Clear the extended register. */ |
| 119 | pci_io_write_config32(IOSF_PCI_DEV, MCRX_REG, reg); |
| 120 | reg = CONFIG_MMCONF_BASE_ADDRESS | 1; |
| 121 | pci_io_write_config32(IOSF_PCI_DEV, MDR_REG, reg); |
| 122 | reg = IOSF_OPCODE(IOSF_OP_WRITE_BUNIT) | IOSF_PORT(IOSF_PORT_BUNIT) | |
| 123 | IOSF_REG(BUNIT_MMCONF_REG) | IOSF_BYTE_EN; |
| 124 | pci_io_write_config32(IOSF_PCI_DEV, MCR_REG, reg); |
| 125 | } |
| 126 | |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 127 | |
| 128 | void bootblock_soc_early_init(void) |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 129 | { |
| 130 | /* Allow memory-mapped PCI config access. */ |
| 131 | setup_mmconfig(); |
| 132 | |
Frans Hendriks | 4e0ec59 | 2019-06-06 10:07:17 +0200 | [diff] [blame] | 133 | /* Early chipset initialization */ |
| 134 | program_base_addresses(); |
| 135 | tco_disable(); |
| 136 | } |
| 137 | void bootblock_soc_init(void) |
| 138 | { |
| 139 | /* Continue chipset initialization */ |
| 140 | soc_rtc_init(); |
| 141 | set_max_freq(); |
| 142 | spi_init(); |
| 143 | |
| 144 | lpc_init(); |
Lee Leahy | 77ff0b1 | 2015-05-05 15:07:29 -0700 | [diff] [blame] | 145 | } |