| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2008 LiPPERT Embedded Computers GmbH |
| * Copyright (C) 2007 Advanced Micro Devices, Inc. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* Based on cache_as_ram_auto.c from AMD's DB800 and DBM690T mainboards. */ |
| |
| #define ASSEMBLY 1 |
| |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <device/pci_def.h> |
| #include <arch/io.h> |
| #include <device/pnp_def.h> |
| #include <arch/hlt.h> |
| #include "pc80/serial.c" |
| #include "arch/i386/lib/console.c" |
| #include "ram/ramtest.c" |
| #include "cpu/x86/bist.h" |
| #include "cpu/x86/msr.h" |
| #include <cpu/amd/lxdef.h> |
| #include <cpu/amd/geode_post_code.h> |
| #include "southbridge/amd/cs5536/cs5536.h" |
| |
| #define POST_CODE(x) outb(x, 0x80) |
| |
| #include "southbridge/amd/cs5536/cs5536_early_smbus.c" |
| #include "southbridge/amd/cs5536/cs5536_early_setup.c" |
| #include "superio/ite/it8712f/it8712f_early_serial.c" |
| |
| #define ManualConf 1 /* No automatic strapped PLL config */ |
| #define PLLMSRhi 0x0000049C /* Manual settings for the PLL */ |
| #define PLLMSRlo 0x00DE6001 |
| #define DIMM0 0xA0 |
| #define DIMM1 0xA2 |
| |
| static inline int spd_read_byte(unsigned int device, unsigned int address) |
| { |
| if (device != DIMM0) |
| return 0xFF; /* No DIMM1, don't even try. */ |
| |
| return smbus_read_byte(device, address); |
| } |
| |
| #include "northbridge/amd/lx/raminit.h" |
| #include "northbridge/amd/lx/pll_reset.c" |
| #include "northbridge/amd/lx/raminit.c" |
| #include "sdram/generic_sdram.c" |
| #include "cpu/amd/model_lx/cpureginit.c" |
| #include "cpu/amd/model_lx/syspreinit.c" |
| |
| static void msr_init(void) |
| { |
| msr_t msr; |
| |
| /* Setup access to the cache for under 1MB. */ |
| msr.hi = 0x24fffc02; |
| msr.lo = 0x1000A000; /* 0-A0000 write back */ |
| wrmsr(CPU_RCONF_DEFAULT, msr); |
| |
| msr.hi = 0x0; /* Write back */ |
| msr.lo = 0x0; |
| wrmsr(CPU_RCONF_A0_BF, msr); |
| wrmsr(CPU_RCONF_C0_DF, msr); |
| wrmsr(CPU_RCONF_E0_FF, msr); |
| |
| /* Setup access to the cache for under 640K. Note MC not setup yet. */ |
| msr.hi = 0x20000000; |
| msr.lo = 0xfff80; |
| wrmsr(MSR_GLIU0 + 0x20, msr); |
| |
| msr.hi = 0x20000000; |
| msr.lo = 0x80fffe0; |
| wrmsr(MSR_GLIU0 + 0x21, msr); |
| |
| msr.hi = 0x20000000; |
| msr.lo = 0xfff80; |
| wrmsr(MSR_GLIU1 + 0x20, msr); |
| |
| msr.hi = 0x20000000; |
| msr.lo = 0x80fffe0; |
| wrmsr(MSR_GLIU1 + 0x21, msr); |
| } |
| |
| static const u16 sio_init_table[] = { // hi=data, lo=index |
| 0x0707, // select LDN 7 (GPIO, SPI, watchdog, ...) |
| 0x1E2C, // disable ATXPowerGood - will cause a reboot! |
| 0x0423, // don't delay POWerOK1/2 |
| 0x9072, // watchdog triggers POWOK, counts seconds |
| #if !USE_WATCHDOG_ON_BOOT |
| 0x0073, 0x0074, // disable watchdog by setting timeout to 0 |
| #endif |
| 0xBF25, 0x372A, 0xF326, // select GPIO function for most pins |
| 0xBF27, 0xFF28, 0x2529, // (GP36=FAN_CTL3, GP13=PWROK1) |
| 0x1E2C, // VIN6=enabled?, FAN4/5 enabled, VIN7=internal, VIN3=enabled |
| 0x46B8, 0x0CB9, // enable pullups |
| 0x36C0, // enable Simple-I/O for GP15,14,12,11= LIVE_LED, WD_ACTIVE, RS485_EN2,1 |
| 0xFFC3, // enable Simple-I/O for GP47-40 (GPIOs on Supervisory Connector) |
| 0x26C8, // config GP15,12,11 as output; GP14 as input |
| 0x2DF5, // map Hw Monitor Thermal Output to GP55 |
| 0x0DF8, // map GP LED Blinking 1 to GP15=LIVE_LED (deactivate Simple-I/O to use) |
| }; |
| |
| /* Early mainboard specific GPIO setup. */ |
| static void mb_gpio_init(void) |
| { |
| int i; |
| |
| /* Init Super I/O WDT, GPIOs. Done early, WDT init may trigger reset! */ |
| it8712f_enter_conf(); |
| for (i = 0; i < ARRAY_SIZE(sio_init_table); i++) { |
| u16 val = sio_init_table[i]; |
| outb((u8)val, SIO_INDEX); |
| outb(val >> 8, SIO_DATA); |
| } |
| it8712f_exit_conf(); |
| } |
| |
| void cache_as_ram_main(void) |
| { |
| POST_CODE(0x01); |
| |
| static const struct mem_controller memctrl[] = { |
| {.channel0 = {(0xa << 3) | 0, (0xa << 3) | 1}} |
| }; |
| |
| SystemPreInit(); |
| msr_init(); |
| |
| cs5536_early_setup(); |
| |
| /* |
| * Note: must do this AFTER the early_setup! It is counting on some |
| * early MSR setup for CS5536. |
| */ |
| it8712f_enable_serial(0, TTYS0_BASE); // Does not use its 1st parameter |
| mb_gpio_init(); |
| uart_init(); |
| console_init(); |
| |
| pll_reset(ManualConf); |
| |
| cpuRegInit(); |
| |
| sdram_initialize(1, memctrl); |
| |
| /* Check memory. */ |
| /* ram_check(0x00000000, 640 * 1024); */ |
| |
| /* Memory is setup. Return to cache_as_ram.inc and continue to boot. */ |
| return; |
| } |