diff options
Diffstat (limited to 'src/mainboard/foxconn/g41s-k/romstage.c')
| -rw-r--r-- | src/mainboard/foxconn/g41s-k/romstage.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/mainboard/foxconn/g41s-k/romstage.c b/src/mainboard/foxconn/g41s-k/romstage.c new file mode 100644 index 0000000000..2a704a3c66 --- /dev/null +++ b/src/mainboard/foxconn/g41s-k/romstage.c @@ -0,0 +1,126 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 Damien Zammit <damien@zamaudio.com> + * Copyright (C) 2017 Arthur Heymans <arthur@aheymans.xyz> + * Copyright (C) 2017 Samuel Holland <samuel@sholland.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <cpu/x86/bist.h> +#include <cpu/intel/romstage.h> +#include <northbridge/intel/x4x/iomap.h> +#include <northbridge/intel/x4x/x4x.h> +#include <southbridge/intel/common/gpio.h> +#include <southbridge/intel/i82801gx/i82801gx.h> +#include <superio/ite/common/ite.h> +#include <superio/ite/it8720f/it8720f.h> +#include <lib.h> +#include <timestamp.h> + +#define LPC_DEV PCI_DEV(0, 0x1f, 0) +#define SERIAL_DEV PNP_DEV(0x2e, IT8720F_SP1) +#define GPIO_DEV PNP_DEV(0x2e, IT8720F_GPIO) + +static void mb_lpc_setup(void) +{ + /* Set the value for GPIO base address register and enable GPIO. */ + pci_write_config32(LPC_DEV, GPIO_BASE, (DEFAULT_GPIOBASE | 1)); + pci_write_config8(LPC_DEV, GPIO_CNTL, 0x10); + + setup_pch_gpios(&mainboard_gpio_map); + + /* Set up GPIOs on Super I/O. */ + ite_reg_write(GPIO_DEV, 0x25, 0x01); + ite_reg_write(GPIO_DEV, 0x26, 0x04); + ite_reg_write(GPIO_DEV, 0x27, 0x00); + ite_reg_write(GPIO_DEV, 0x28, 0x40); + ite_reg_write(GPIO_DEV, 0x29, 0x01); + ite_reg_write(GPIO_DEV, 0x73, 0x00); + ite_reg_write(GPIO_DEV, 0x74, 0x00); + ite_reg_write(GPIO_DEV, 0xb1, 0x04); + ite_reg_write(GPIO_DEV, 0xb8, 0x20); + ite_reg_write(GPIO_DEV, 0xbb, 0x01); + ite_reg_write(GPIO_DEV, 0xc0, 0x00); + ite_reg_write(GPIO_DEV, 0xc3, 0x01); + ite_reg_write(GPIO_DEV, 0xcb, 0x01); + ite_reg_write(GPIO_DEV, 0xf5, 0x28); + ite_reg_write(GPIO_DEV, 0xf6, 0x12); + ite_enable_3vsbsw(GPIO_DEV); + + /* Set up IRQ routing. */ + RCBA16(D31IR) = 0x0132; + RCBA16(D30IR) = 0x3241; + RCBA16(D29IR) = 0x0237; + + /* Enable IOAPIC. */ + RCBA8(OIC) = 0x03; + RCBA8(OIC); + + RCBA32(FD) = FD_PCIE6 | FD_PCIE5 | FD_PCIE4 | FD_PCIE3 | FD_INTLAN | + FD_ACMOD | FD_ACAUD | FD_PATA | 1; + RCBA32(CG) = 0x00000001; +} + +static void ich7_enable_lpc(void) +{ + pci_write_config16(LPC_DEV, LPC_IO_DEC, 0x0010); + pci_write_config16(LPC_DEV, LPC_EN, CNF1_LPC_EN | KBC_LPC_EN | + COMB_LPC_EN | COMA_LPC_EN); + + /* Decode 64 bytes at 0x0a00 to LPC for Super I/O EC and GPIO. */ + pci_write_config32(LPC_DEV, 0x84, 0x003c0a01); +} + +void mainboard_romstage_entry(unsigned long bist) +{ + // ch0 ch1 + const u8 spd_addrmap[4] = { 0x50, 0, 0, 0 }; + u8 boot_path = 0; + u8 s3_resume; + + timestamp_init(get_initial_timestamp()); + timestamp_add_now(TS_START_ROMSTAGE); + + /* Disable watchdog timer. */ + RCBA32(GCS) = RCBA32(GCS) | 0x20; + + /* Set up southbridge and Super I/O GPIOs. */ + ich7_enable_lpc(); + mb_lpc_setup(); + ite_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE); + + console_init(); + + report_bist_failure(bist); + enable_smbus(); + + x4x_early_init(); + + s3_resume = southbridge_detect_s3_resume(); + if (s3_resume) + boot_path = BOOT_PATH_RESUME; + if (MCHBAR32(PMSTS_MCHBAR) & PMSTS_WARM_RESET) + boot_path = BOOT_PATH_WARM_RESET; + + printk(BIOS_DEBUG, "Initializing memory\n"); + timestamp_add_now(TS_BEFORE_INITRAM); + sdram_initialize(boot_path, spd_addrmap); + timestamp_add_now(TS_AFTER_INITRAM); + quick_ram_check(); + printk(BIOS_DEBUG, "Memory initialized\n"); + + x4x_late_init(s3_resume); + + printk(BIOS_DEBUG, "x4x late init complete\n"); + +} |