diff options
Diffstat (limited to 'src/mainboard/asus/p5qpl-am/romstage.c')
| -rw-r--r-- | src/mainboard/asus/p5qpl-am/romstage.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/mainboard/asus/p5qpl-am/romstage.c b/src/mainboard/asus/p5qpl-am/romstage.c new file mode 100644 index 0000000000..f9983f405a --- /dev/null +++ b/src/mainboard/asus/p5qpl-am/romstage.c @@ -0,0 +1,191 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 Damien Zammit <damien@zamaudio.com> + * Copyright (C) 2017 Arthur Heymans <arthur@aheymans.xyz> + * + * 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 <console/console.h> +#include <southbridge/intel/i82801gx/i82801gx.h> +#include <southbridge/intel/common/gpio.h> +#include <northbridge/intel/x4x/x4x.h> +#include <cpu/x86/bist.h> +#include <cpu/intel/romstage.h> +#include <superio/winbond/w83627dhg/w83627dhg.h> +#include <superio/winbond/common/winbond.h> +#include <lib.h> +#include <arch/stages.h> +#include <northbridge/intel/x4x/iomap.h> +#include <device/pnp_def.h> +#include <timestamp.h> +#include <halt.h> +#include <cpu/intel/speedstep.h> +#include <cpu/x86/msr.h> + +#define SERIAL_DEV PNP_DEV(0x2e, W83627DHG_SP1) +#define GPIO_DEV PNP_DEV(0x2e, W83627DHG_GPIO2345_V) +#define LPC_DEV PCI_DEV(0, 0x1f, 0) + +static u8 msr_get_fsb(void) +{ + u8 fsbcfg; + msr_t msr; + const u32 eax = cpuid_eax(1); + + /* Netburst */ + if (((eax >> 8) & 0xf) == 0xf) { + msr = rdmsr(MSR_EBC_FREQUENCY_ID); + fsbcfg = (msr.lo >> 16) & 0x7; + } else { /* Intel Core 2 */ + msr = rdmsr(MSR_FSB_FREQ); + fsbcfg = msr.lo & 0x7; + } + + return fsbcfg; +} + +/* + * BSEL mch straps are not hooked up to the CPU as usual but the the SIO + * BSEL0 -> not hooked up (such configs are not supported anyways) + * BSEL1 -> GPIO33 + * BSEL2 -> GPIO40 + */ + +static int setup_sio_gpio(void) +{ + int need_reset = 0; + u8 reg, old_reg; + + u8 bsel = msr_get_fsb(); + switch (bsel) { + case 0: + case 2: + case 4: + break; + default: + printk(BIOS_WARNING, + "BSEL: Unsupported FSB frequency, using 800MHz\n"); + bsel = 2; /* 800MHz */ + break; + } + + pnp_enter_ext_func_mode(GPIO_DEV); + pnp_set_logical_device(GPIO_DEV); + + reg = 0x92; + old_reg = pnp_read_config(GPIO_DEV, 0x2c); + pnp_write_config(GPIO_DEV, 0x2c, reg); + need_reset = (reg != old_reg); + + pnp_write_config(GPIO_DEV, 0x30, 0x06); + pnp_write_config(GPIO_DEV, 0xf0, 0xf3); /* GPIO3 direction */ + pnp_write_config(GPIO_DEV, 0xf4, 0x00); /* GPIO4 direction */ + + int gpio33 = (bsel & 2) >> 1; + int gpio40 = (bsel & 4) >> 2; + reg = (gpio33 << 3); + old_reg = pnp_read_config(GPIO_DEV, 0xf1); + pnp_write_config(GPIO_DEV, 0xf1, old_reg | reg); + need_reset += ((reg & 0x8) != (old_reg & 0x8)); + + reg = gpio40; + old_reg = pnp_read_config(GPIO_DEV, 0xf5); + pnp_write_config(GPIO_DEV, 0xf5, old_reg | reg); + need_reset += ((reg & 0x1) != (old_reg & 0x1)); + + pnp_exit_ext_func_mode(GPIO_DEV); + + return need_reset; +} + +static void mb_lpc_setup(void) +{ + u32 reg32; + /* 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); + + /* Enable IOAPIC */ + RCBA8(0x31ff) = 0x03; + RCBA8(0x31ff); + + reg32 = RCBA32(GCS); + reg32 |= (1 << 5); + RCBA32(GCS) = reg32; + RCBA32(FD) = FD_PCIE6 | FD_PCIE5 | FD_PCIE4 | FD_PCIE3 | FD_ACMOD + | FD_ACAUD | 1; + RCBA32(CG) = 0x00000001; +} + +static void ich7_enable_lpc(void) +{ + pci_write_config8(LPC_DEV, SERIRQ_CNTL, 0xd0); + /* Fixed IO decode ranges */ + pci_write_config16(LPC_DEV, LPC_IO_DEC, 0x0010); + /* LPC enable devices */ + pci_write_config16(LPC_DEV, LPC_EN, CNF1_LPC_EN | KBC_LPC_EN + | FDD_LPC_EN | LPT_LPC_EN + | COMB_LPC_EN | COMA_LPC_EN); + /* IO decode range: HWM on 0x295 */ + pci_write_config32(LPC_DEV, 0x84, 0x000295); +} + +void mainboard_romstage_entry(unsigned long bist) +{ + // ch0 ch1 + const u8 spd_addrmap[4] = { 0x50, 0, 0x52, 0 }; + u8 boot_path = 0; + u8 s3_resume; + + timestamp_init(get_initial_timestamp()); + timestamp_add_now(TS_START_ROMSTAGE); + + /* Set southbridge and Super I/O GPIOs. */ + ich7_enable_lpc(); + mb_lpc_setup(); + winbond_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; + + if (!s3_resume && setup_sio_gpio()) { + printk(BIOS_DEBUG, + "Needs reset to configure CPU BSEL straps\n"); + outb(0xe, 0xcf9); + halt(); + } + + 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"); + +} |