Lee Leahy | 274d20a | 2016-05-15 13:52:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2016 Intel Corp. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | */ |
| 15 | |
| 16 | #include <arch/io.h> |
| 17 | #include <console/console.h> |
Lee Leahy | bc518d5 | 2016-05-30 15:01:06 -0700 | [diff] [blame^] | 18 | #include <fsp/romstage.h> |
Lee Leahy | 274d20a | 2016-05-15 13:52:36 -0700 | [diff] [blame] | 19 | #include <soc/ramstage.h> |
Lee Leahy | 15843bd | 2016-05-15 15:05:56 -0700 | [diff] [blame] | 20 | #include "reg_access.h" |
Lee Leahy | 274d20a | 2016-05-15 13:52:36 -0700 | [diff] [blame] | 21 | #include "gen1.h" |
| 22 | #include "gen2.h" |
| 23 | |
Lee Leahy | bc518d5 | 2016-05-30 15:01:06 -0700 | [diff] [blame^] | 24 | void car_mainboard_pre_console_init(void) |
| 25 | { |
| 26 | const struct reg_script *script; |
| 27 | |
| 28 | /* Initialize the GPIO controllers */ |
| 29 | if (IS_ENABLED(CONFIG_GALILEO_GEN2)) |
| 30 | script = gen2_gpio_init; |
| 31 | else |
| 32 | script = gen1_gpio_init; |
| 33 | reg_script_run(script); |
| 34 | |
| 35 | /* Initialize the RXD and TXD paths for UART0 */ |
| 36 | if (IS_ENABLED(CONFIG_ENABLE_BUILTIN_HSUART0)) { |
| 37 | if (IS_ENABLED(CONFIG_GALILEO_GEN2)) |
| 38 | script = gen2_hsuart0; |
| 39 | else |
| 40 | script = (reg_legacy_gpio_read (R_QNC_GPIO_RGLVL_RESUME_WELL) |
| 41 | & GALILEO_DETERMINE_IOEXP_SLA_RESUMEWELL_GPIO) |
| 42 | ? gen1_hsuart0_0x21 : gen1_hsuart0_0x20; |
| 43 | reg_script_run(script); |
| 44 | } |
| 45 | } |
| 46 | |
Lee Leahy | 15843bd | 2016-05-15 15:05:56 -0700 | [diff] [blame] | 47 | void mainboard_gpio_i2c_init(device_t dev) |
| 48 | { |
| 49 | const struct reg_script *script; |
| 50 | |
| 51 | printk(BIOS_INFO, "Galileo I2C chip initialization\n"); |
| 52 | |
| 53 | /* Determine the correct script for the board */ |
| 54 | if (IS_ENABLED(CONFIG_GALILEO_GEN2)) |
| 55 | script = gen2_i2c_init; |
| 56 | else |
| 57 | /* Determine which I2C address is in use */ |
| 58 | script = (reg_legacy_gpio_read (R_QNC_GPIO_RGLVL_RESUME_WELL) |
| 59 | & GALILEO_DETERMINE_IOEXP_SLA_RESUMEWELL_GPIO) |
Lee Leahy | bc518d5 | 2016-05-30 15:01:06 -0700 | [diff] [blame^] | 60 | ? gen1_i2c_0x21_init : gen1_i2c_0x20_init; |
Lee Leahy | 15843bd | 2016-05-15 15:05:56 -0700 | [diff] [blame] | 61 | |
| 62 | /* Initialize the I2C chips */ |
| 63 | reg_script_run(script); |
| 64 | } |
| 65 | |
Lee Leahy | 5ef051a | 2016-04-29 15:16:54 -0700 | [diff] [blame] | 66 | void mainboard_gpio_pcie_reset(uint32_t pin_value) |
| 67 | { |
| 68 | uint32_t pin_number; |
| 69 | uint32_t value; |
| 70 | |
| 71 | /* Determine the correct PCIe reset pin */ |
| 72 | if (IS_ENABLED(CONFIG_GALILEO_GEN2)) |
| 73 | pin_number = GEN2_PCI_RESET_RESUMEWELL_GPIO; |
| 74 | else |
| 75 | pin_number = GEN1_PCI_RESET_RESUMEWELL_GPIO; |
| 76 | |
| 77 | /* Update the PCIe reset value */ |
| 78 | value = reg_legacy_gpio_read(R_QNC_GPIO_RGLVL_RESUME_WELL); |
| 79 | value = (value & ~(1 << pin_number)) | ((pin_value & 1) << pin_number); |
| 80 | reg_legacy_gpio_write(R_QNC_GPIO_RGLVL_RESUME_WELL, value); |
| 81 | } |