2 * This file is part of the LinuxBIOS project.
4 * Copyright (C) 2007 Advanced Micro Devices, Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include <device/pci_def.h>
26 #include <device/pnp_def.h>
27 #include <arch/romcc_io.h>
29 #include "pc80/serial.c"
30 #include "arch/i386/lib/console.c"
31 #include "ram/ramtest.c"
32 #include "cpu/x86/bist.h"
33 #include "cpu/x86/msr.h"
34 #include <cpu/amd/lxdef.h>
35 #include <cpu/amd/geode_post_code.h>
36 #include "southbridge/amd/cs5536/cs5536.h"
37 #include "spd_table.h"
40 #define POST_CODE(x) outb(x, 0x80)
42 #include "southbridge/amd/cs5536/cs5536_early_smbus.c"
43 #include "southbridge/amd/cs5536/cs5536_early_setup.c"
49 static int spd_read_byte(unsigned device, unsigned address)
54 for (i=0; i < (sizeof spd_table/sizeof spd_table[0]); i++){
55 if (spd_table[i].address == address){
56 return spd_table[i].data;
61 /* returns 0xFF on any failures */
65 #define ManualConf 0 /* Do automatic strapped PLL config */
66 /* CPU and GLIU mult/div 500/266*/
67 #define PLLMSRhi 0x0000039C /* 33MHz PCI, 0x000003DD for 66MHz PCI */
68 /* Hold Count - how long we will sit in reset */
69 #define PLLMSRlo 0x00DE6000
71 #include "northbridge/amd/lx/raminit.h"
72 #include "northbridge/amd/lx/pll_reset.c"
73 #include "northbridge/amd/lx/raminit.c"
74 #include "sdram/generic_sdram.c"
75 #include "cpu/amd/model_lx/cpureginit.c"
76 #include "cpu/amd/model_lx/syspreinit.c"
78 static void msr_init(void)
81 /* Setup access to the cache for under 1MB. */
83 msr.lo = 0x1000A000; /* 0-A0000 write back */
84 wrmsr(CPU_RCONF_DEFAULT, msr);
86 msr.hi = 0x0; /* write back */
88 wrmsr(CPU_RCONF_A0_BF, msr);
89 wrmsr(CPU_RCONF_C0_DF, msr);
90 wrmsr(CPU_RCONF_E0_FF, msr);
92 /* Setup access to the cache for under 640K. Note MC not setup yet. */
95 wrmsr(MSR_GLIU0 + 0x20, msr);
99 wrmsr(MSR_GLIU0 + 0x21, msr);
103 wrmsr(MSR_GLIU1 + 0x20, msr);
107 wrmsr(MSR_GLIU1 + 0x21, msr);
111 static void mb_gpio_init(void)
113 /* Early mainboard specific GPIO setup */
116 static void cs5536_setup_onchipuart2(void)
120 /* GPIO4 - UART2_TX */
121 /* Set: Output Enable (0x4) */
122 outl(GPIOL_4_SET, GPIO_IO_BASE + GPIOL_OUTPUT_ENABLE);
123 /* Set: OUTAUX1 Select (0x10) */
124 outl(GPIOL_4_SET, GPIO_IO_BASE + GPIOL_OUT_AUX1_SELECT);
125 /* GPIO4 - UART2_RX */
126 /* Set: Input Enable (0x20) */
127 outl(GPIOL_3_SET, GPIO_IO_BASE + GPIOL_INPUT_ENABLE);
128 /* Set: INAUX1 Select (0x34) */
129 outl(GPIOL_3_SET, GPIO_IO_BASE + GPIOL_IN_AUX1_SELECT);
131 /* Set: GPIO 3 + 3 Pull Up (0x18) */
132 outl(GPIOL_3_SET | GPIOL_4_SET, GPIO_IO_BASE + GPIOL_PULLUP_ENABLE);
134 /* set address to 3F8 */
135 msr = rdmsr(MDD_LEG_IO);
137 wrmsr(MDD_LEG_IO, msr);
139 /* Bit 1 = DEVEN (device enable)
140 * Bit 4 = EN_BANKS (allow access to the upper banks
142 msr.lo = (1 << 4) | (1 << 1);
146 wrmsr(MDD_UART2_CONF, msr);
149 void cache_as_ram_main(void)
153 static const struct mem_controller memctrl[] = {
154 {.channel0 = {(0xa << 3) | 0, (0xa << 3) | 1}}
160 cs5536_early_setup();
162 /* NOTE: must do this AFTER the early_setup!
163 * it is counting on some early MSR setup
166 /* cs5536_disable_internal_uart disable them. Set them up now... */
167 cs5536_setup_onchipuart2(); /* dbe61 uses UART2 as COM1 */
172 pll_reset(ManualConf);
176 sdram_initialize(1, memctrl);
178 /* Dump memory configuratation */
181 msr = rdmsr(MC_CF07_DATA);
182 print_debug("MC_CF07_DATA: ");
183 print_debug_hex32(MC_CF07_DATA);
184 print_debug(" value is: ");
185 print_debug_hex32(msr.hi);
187 print_debug_hex32(msr.lo);
190 msr = rdmsr(MC_CF1017_DATA);
191 print_debug("MC_CF1017_DATA: ");
192 print_debug_hex32(MC_CF1017_DATA);
193 print_debug(" value is: ");
194 print_debug_hex32(msr.hi);
196 print_debug_hex32(msr.lo);
199 msr = rdmsr(MC_CF8F_DATA);
200 print_debug("MC_CF8F_DATA: ");
201 print_debug_hex32(MC_CF8F_DATA);
202 print_debug(" value is: ");
203 print_debug_hex32(msr.hi);
205 print_debug_hex32(msr.lo);
206 msr = rdmsr(MC_CF8F_DATA);
211 /* ram_check(0x00000000, 640 * 1024); */
213 /* Memory is setup. Return to cache_as_ram.inc and continue to boot */