2 * This file is part of the coreboot 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 version 2 as
8 * published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <device/pci_def.h>
24 #include <device/pnp_def.h>
25 #include <arch/romcc_io.h>
27 #include <console/console.h>
28 #include "lib/ramtest.c"
29 #include "cpu/x86/bist.h"
30 #include "cpu/x86/msr.h"
31 #include <cpu/amd/lxdef.h>
32 #include <cpu/amd/geode_post_code.h>
33 #include "southbridge/amd/cs5536/cs5536.h"
35 #define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
37 /* The ALIX1.C has no SMBus; the setup is hard-wired. */
38 static void cs5536_enable_smbus(void)
42 #include "southbridge/amd/cs5536/cs5536_early_setup.c"
43 #include "superio/winbond/w83627hf/w83627hf_early_serial.c"
45 /* The part is a Hynix hy5du121622ctp-d43.
47 * HY 5D U 12 16 2 2 C <blank> T <blank> P D43
50 * VDD 2.5 VDDQ 2.5 (U)
51 * 512M 8K REFRESH (12)
56 * Normal Power Consumption (<blank> )
58 * Single Die (<blank>)
63 static const u8 spdbytes[] = {
64 [SPD_ACCEPTABLE_CAS_LATENCIES] = 0x10,
65 [SPD_BANK_DENSITY] = 0x40,
66 [SPD_DEVICE_ATTRIBUTES_GENERAL] = 0xff,
67 [SPD_MEMORY_TYPE] = 7,
68 [SPD_MIN_CYCLE_TIME_AT_CAS_MAX] = 10, /* A guess for the tRAC value */
69 [SPD_MODULE_ATTRIBUTES] = 0xff, /* FIXME later when we figure out. */
70 [SPD_NUM_BANKS_PER_SDRAM] = 4,
71 [SPD_PRIMARY_SDRAM_WIDTH] = 8,
72 [SPD_NUM_DIMM_BANKS] = 1, /* ALIX1.C is 1 bank. */
73 [SPD_NUM_COLUMNS] = 0xa,
76 [SPD_SDRAM_CYCLE_TIME_2ND] = 60,
77 [SPD_SDRAM_CYCLE_TIME_3RD] = 75,
85 static u8 spd_read_byte(u8 device, u8 address)
87 print_debug("spd_read_byte dev ");
88 print_debug_hex8(device);
90 if (device != (0x50 << 1)) {
91 print_debug(" returns 0xff\n");
95 print_debug(" addr ");
96 print_debug_hex8(address);
97 print_debug(" returns ");
98 print_debug_hex8(spdbytes[address]);
101 return spdbytes[address];
104 #define ManualConf 0 /* Do automatic strapped PLL config */
105 #define PLLMSRhi 0x00001490 /* Manual settings for the PLL */
106 #define PLLMSRlo 0x02000030
111 #include "northbridge/amd/lx/raminit.h"
112 #include "northbridge/amd/lx/pll_reset.c"
113 #include "northbridge/amd/lx/raminit.c"
114 #include "lib/generic_sdram.c"
115 #include "cpu/amd/model_lx/cpureginit.c"
116 #include "cpu/amd/model_lx/syspreinit.c"
117 #include "cpu/amd/model_lx/msrinit.c"
119 /** Early mainboard specific GPIO setup. */
120 static void mb_gpio_init(void)
124 void main(unsigned long bist)
126 static const struct mem_controller memctrl[] = {
127 {.channel0 = {0x50}},
135 cs5536_early_setup();
137 /* NOTE: Must do this AFTER cs5536_early_setup()!
138 * It is counting on some early MSR setup for the CS5536.
140 cs5536_disable_internal_uart();
141 w83627hf_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
146 /* Halt if there was a built in self test failure */
147 report_bist_failure(bist);
149 pll_reset(ManualConf);
153 sdram_initialize(1, memctrl);
156 /* Enable this only if you are having questions. */
157 /* ram_check(0, 640 * 1024); */
159 /* Switch from Cache as RAM to real RAM.
161 * There are two ways we could think about this.
163 * 1. If we are using the romstage.inc ROMCC way, the stack is
164 * going to be re-setup in the code following this code. Just
165 * wbinvd the stack to clear the cache tags. We don't care
166 * where the stack used to be.
168 * 2. This file is built as a normal .c -> .o and linked in
169 * etc. The stack might be used to return etc. That means we
170 * care about what is in the stack. If we are smart we set
171 * the CAR stack to the same location as the rest of
172 * coreboot. If that is the case we can just do a wbinvd.
173 * The stack will be written into real RAM that is now setup
174 * and we continue like nothing happened. If the stack is
175 * located somewhere other than where LB would like it, you
176 * need to write some code to do a copy from cache to RAM
178 * We use method 1 on Norwich and on this board too.
181 print_err("POST 02\n");
183 print_err("Past wbinvd\n");
185 /* We are finding the return does not work on this board. Explicitly
186 * call the label that is after the call to us. This is gross, but
187 * sometimes at this level it is the only way out.
189 void done_cache_as_ram_main(void);
190 done_cache_as_ram_main();