2 * This file is part of the coreboot project.
4 * Copyright (C) 2008 LiPPERT Embedded Computers GmbH
5 * Copyright (C) 2007 Advanced Micro Devices, Inc.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 /* Based on cache_as_ram_auto.c from AMD's DB800 and DBM690T mainboards. */
28 #include <device/pci_def.h>
30 #include <device/pnp_def.h>
32 #include "pc80/serial.c"
33 #include "arch/i386/lib/console.c"
34 #include "lib/ramtest.c"
35 #include "cpu/x86/bist.h"
36 #include "cpu/x86/msr.h"
37 #include <cpu/amd/lxdef.h>
38 #include <cpu/amd/geode_post_code.h>
39 #include "southbridge/amd/cs5536/cs5536.h"
41 #define POST_CODE(x) outb(x, 0x80)
43 #include "southbridge/amd/cs5536/cs5536_early_smbus.c"
44 #include "southbridge/amd/cs5536/cs5536_early_setup.c"
45 #include "superio/ite/it8712f/it8712f_early_serial.c"
47 #define ManualConf 1 /* No automatic strapped PLL config */
48 #define PLLMSRhi 0x0000049C /* Manual settings for the PLL */
49 #define PLLMSRlo 0x00DE6001
53 static inline int spd_read_byte(unsigned int device, unsigned int address)
56 return 0xFF; /* No DIMM1, don't even try. */
58 return smbus_read_byte(device, address);
61 #include "northbridge/amd/lx/raminit.h"
62 #include "northbridge/amd/lx/pll_reset.c"
63 #include "northbridge/amd/lx/raminit.c"
64 #include "lib/generic_sdram.c"
65 #include "cpu/amd/model_lx/cpureginit.c"
66 #include "cpu/amd/model_lx/syspreinit.c"
68 static void msr_init(void)
72 /* Setup access to the cache for under 1MB. */
74 msr.lo = 0x1000A000; /* 0-A0000 write back */
75 wrmsr(CPU_RCONF_DEFAULT, msr);
77 msr.hi = 0x0; /* Write back */
79 wrmsr(CPU_RCONF_A0_BF, msr);
80 wrmsr(CPU_RCONF_C0_DF, msr);
81 wrmsr(CPU_RCONF_E0_FF, msr);
83 /* Setup access to the cache for under 640K. Note MC not setup yet. */
86 wrmsr(MSR_GLIU0 + 0x20, msr);
90 wrmsr(MSR_GLIU0 + 0x21, msr);
94 wrmsr(MSR_GLIU1 + 0x20, msr);
98 wrmsr(MSR_GLIU1 + 0x21, msr);
101 static const u16 sio_init_table[] = { // hi=data, lo=index
102 0x0707, // select LDN 7 (GPIO, SPI, watchdog, ...)
103 0x1E2C, // disable ATXPowerGood - will cause a reboot!
104 0x0423, // don't delay POWerOK1/2
105 0x9072, // watchdog triggers POWOK, counts seconds
106 #if !CONFIG_USE_WATCHDOG_ON_BOOT
107 0x0073, 0x0074, // disable watchdog by setting timeout to 0
109 0xBF25, 0x372A, 0xF326, // select GPIO function for most pins
110 0xBF27, 0xFF28, 0x2529, // (GP36=FAN_CTL3, GP13=PWROK1)
111 0x1E2C, // VIN6=enabled?, FAN4/5 enabled, VIN7=internal, VIN3=enabled
112 0x46B8, 0x0CB9, // enable pullups
113 0x36C0, // enable Simple-I/O for GP15,14,12,11= LIVE_LED, WD_ACTIVE, RS485_EN2,1
114 0xFFC3, // enable Simple-I/O for GP47-40 (GPIOs on Supervisory Connector)
115 0x26C8, // config GP15,12,11 as output; GP14 as input
116 0x2DF5, // map Hw Monitor Thermal Output to GP55
117 0x0DF8, // map GP LED Blinking 1 to GP15=LIVE_LED (deactivate Simple-I/O to use)
120 /* Early mainboard specific GPIO setup. */
121 static void mb_gpio_init(void)
125 /* Init Super I/O WDT, GPIOs. Done early, WDT init may trigger reset! */
126 it8712f_enter_conf();
127 for (i = 0; i < ARRAY_SIZE(sio_init_table); i++) {
128 u16 val = sio_init_table[i];
129 outb((u8)val, SIO_INDEX);
130 outb(val >> 8, SIO_DATA);
135 void cache_as_ram_main(void)
139 static const struct mem_controller memctrl[] = {
140 {.channel0 = {(0xa << 3) | 0, (0xa << 3) | 1}}
146 cs5536_early_setup();
149 * Note: must do this AFTER the early_setup! It is counting on some
150 * early MSR setup for CS5536.
152 it8712f_enable_serial(0, CONFIG_TTYS0_BASE); // Does not use its 1st parameter
157 pll_reset(ManualConf);
161 sdram_initialize(1, memctrl);
164 /* ram_check(0x00000000, 640 * 1024); */
166 /* Memory is setup. Return to cache_as_ram.inc and continue to boot. */