From c583920a748fb8bd7999142433ad08641b06283d Mon Sep 17 00:00:00 2001 From: Arthur Heymans Date: Tue, 12 Nov 2019 23:48:42 +0100 Subject: nb/intel/i945: Initialize console in bootblock Change-Id: Ic6ea158714998195614a63ee46a057f405de5616 Signed-off-by: Arthur Heymans Reviewed-on: https://review.coreboot.org/c/coreboot/+/36796 Tested-by: build bot (Jenkins) Reviewed-by: HAOUAS Elyes --- src/mainboard/asus/p5gc-mx/early_init.c | 118 ++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 src/mainboard/asus/p5gc-mx/early_init.c (limited to 'src/mainboard/asus/p5gc-mx/early_init.c') diff --git a/src/mainboard/asus/p5gc-mx/early_init.c b/src/mainboard/asus/p5gc-mx/early_init.c new file mode 100644 index 0000000000..6d37fed2ef --- /dev/null +++ b/src/mainboard/asus/p5gc-mx/early_init.c @@ -0,0 +1,118 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2008 coresystems GmbH + * Copyright (C) 2016 Arthur Heymans arthur@aheymans.xyz + * Copyright (C) 2016 Kyösti Mälkki + * + * 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; version 2 of the License. + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define SERIAL_DEV PNP_DEV(0x2e, W83627DHG_SP1) +#define GPIO_DEV PNP_DEV(0x2e, W83627DHG_GPIO2345_V) + +/* + * BSEL0 is connected with GPIO32 + * BSEL1 is connected with GPIO33 with inversed logic + * BSEL2 is connected with GPIO55 + */ +static int setup_sio_gpio(u8 bsel) +{ + int need_reset = 0; + u8 reg, old_reg; + + pnp_enter_ext_func_mode(GPIO_DEV); + pnp_set_logical_device(GPIO_DEV); + + reg = 0x9a; + 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, 0x0e); + pnp_write_config(GPIO_DEV, 0xe0, 0xde); + pnp_write_config(GPIO_DEV, 0xf0, 0xf3); + pnp_write_config(GPIO_DEV, 0xf4, 0x80); + pnp_write_config(GPIO_DEV, 0xf5, 0x80); + + /* Invert GPIO33 */ + pnp_write_config(GPIO_DEV, 0xf2, 0x08); + + reg = (bsel & 3) << 2; + old_reg = pnp_read_config(GPIO_DEV, 0xf1); + pnp_write_config(GPIO_DEV, 0xf1, reg); + need_reset += ((reg & 0xc) != (old_reg & 0xc)); + + reg = (bsel >> 2) << 5; + old_reg = pnp_read_config(GPIO_DEV, 0xe1); + pnp_write_config(GPIO_DEV, 0xe1, reg); + need_reset += ((reg & 0x20) != (old_reg & 0x20)); + + pnp_exit_ext_func_mode(GPIO_DEV); + + return need_reset; +} + +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; +} + +void mainboard_late_rcba_config(void) +{ + /* Enable PCIe Root Port Clock Gate */ + RCBA32(CG) = 0x00000001; +} + +void mainboard_pre_raminit_config(int s3_resume) +{ + u8 c_bsel = msr_get_fsb(); + /* + * Result is that FSB is incorrect on s3 resume (fixed at 800MHz). + * Some CPU accept this others don't. + */ + if (!s3_resume && setup_sio_gpio(c_bsel)) { + printk(BIOS_DEBUG, + "Needs reset to configure CPU BSEL straps\n"); + full_reset(); + } +} + +void bootblock_mainboard_early_init(void) +{ + winbond_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE); +} -- cgit v1.2.3