2 * This file is part of the coreboot project.
4 * Copyright (C) 2006 Jon Dufresne <jon.dufresne@gmail.com>
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
21 #include <sdram_mode.h>
23 #define dumpnorth() dump_pci_device(PCI_DEV(0, 0, 1))
24 #define VG85X_MODE (SDRAM_BURST_4 | SDRAM_BURST_INTERLEAVED | SDRAM_CAS_2_5)
27 * Set only what I need until it works, then make it figure things out on boot
28 * assumes only one dimm is populated
31 static void sdram_set_registers(const struct mem_controller *ctrl)
34 print_debug("Before configuration:\r\n");
39 static void spd_set_row_attributes(const struct mem_controller *ctrl)
44 pci_write_config16(ctrl->d0, 0x50, dra_reg);
47 static void spd_set_dram_controller_mode(const struct mem_controller *ctrl)
51 /* drc_reg = 0x00009101; */
53 pci_write_config32(ctrl->d0, 0x70, drc_reg);
56 static void spd_set_dram_timing(const struct mem_controller *ctrl)
61 pci_write_config32(ctrl->d0, 0x60, drt_reg);
64 static void spd_set_dram_size(const struct mem_controller *ctrl)
69 pci_write_config32(ctrl->d0, 0x40, drb_reg);
72 static void spd_set_dram_pwr_management(const struct mem_controller *ctrl)
76 pwrmg_reg = 0x10f10430;
77 pci_write_config32(ctrl->d0, 0x68, pwrmg_reg);
80 static void spd_set_dram_throttle_control(const struct mem_controller *ctrl)
85 pci_write_config32(ctrl->d0, 0xa0, dtc_reg);
88 void udelay(int usecs)
91 for(i = 0; i < usecs; i++)
95 #define delay() udelay(200)
97 /* if ram still doesn't work do this function */
98 static void spd_set_undocumented_registers(const struct mem_controller *ctrl)
104 pci_write_config32(PCI_DEV(0, 0, 0), 0x10, 0xe0000008);
105 pci_write_config32(PCI_DEV(0, 0, 0), 0x2c, 0x35808086);
106 pci_write_config32(PCI_DEV(0, 0, 0), 0x48, 0xfec10000);
107 pci_write_config32(PCI_DEV(0, 0, 0), 0x50, 0x00440100);
109 pci_write_config32(PCI_DEV(0, 0, 0), 0x58, 0x11111000);
111 pci_write_config16(PCI_DEV(0, 0, 0), 0x52, 0x0002);
113 pci_write_config16(PCI_DEV(0, 0, 0), 0x52, 0x0044);
115 pci_write_config16(PCI_DEV(0, 0, 0), 0x52, 0x0000);
117 pci_write_config32(PCI_DEV(0, 0, 0), 0x58, 0x33333000);
118 pci_write_config32(PCI_DEV(0, 0, 0), 0x5c, 0x33333333);
120 pci_write_config32(PCI_DEV(0, 0, 0), 0x60, 0x0000390a);
121 pci_write_config32(PCI_DEV(0, 0, 0), 0x74, 0x02006056);
122 pci_write_config32(PCI_DEV(0, 0, 0), 0x78, 0x00800001);
124 pci_write_config32(PCI_DEV(0, 0, 0), 0xa8, 0x00000001);
126 pci_write_config32(PCI_DEV(0, 0, 0), 0xbc, 0x00001020);
128 pci_write_config32(PCI_DEV(0, 0, 0), 0xfc, 0x00000109);
132 pci_write_config32(ctrl->d0, 0x74, 0x00000001);
133 pci_write_config32(ctrl->d0, 0x78, 0x001fe974);
134 pci_write_config32(ctrl->d0, 0x80, 0x00af0039);
135 pci_write_config32(ctrl->d0, 0x84, 0x0000033c);
136 pci_write_config32(ctrl->d0, 0x88, 0x00000010);
137 pci_write_config32(ctrl->d0, 0x98, 0xde5a868c);
138 pci_write_config32(ctrl->d0, 0x9c, 0x404e0046);
139 pci_write_config32(ctrl->d0, 0xa8, 0x00020e1a);
140 pci_write_config32(ctrl->d0, 0xb4, 0x0044cdac);
141 pci_write_config32(ctrl->d0, 0xb8, 0x000055d4);
142 pci_write_config32(ctrl->d0, 0xbc, 0x024acd38);
143 pci_write_config32(ctrl->d0, 0xc0, 0x00000003);
147 pci_write_config32(PCI_DEV(0, 0, 3), 0x2c, 0x35858086);
148 pci_write_config32(PCI_DEV(0, 0, 3), 0x44, 0x11110000);
149 pci_write_config32(PCI_DEV(0, 0, 3), 0x48, 0x09614a3c);
150 pci_write_config32(PCI_DEV(0, 0, 3), 0x4c, 0x4b09604a);
151 pci_write_config32(PCI_DEV(0, 0, 3), 0x50, 0x00000962);
152 pci_write_config32(PCI_DEV(0, 0, 3), 0x5c, 0x0b023331);
153 pci_write_config32(PCI_DEV(0, 0, 3), 0x6c, 0x0000402e);
154 pci_write_config32(PCI_DEV(0, 0, 3), 0x78, 0xe7c70f7f);
155 pci_write_config32(PCI_DEV(0, 0, 3), 0x7c, 0x0284007f);
156 pci_write_config32(PCI_DEV(0, 0, 3), 0x84, 0x000000ef);
160 pci_write_config16(PCI_DEV(0, 0, 3), 0xc0, 0x0200);
161 pci_write_config16(PCI_DEV(0, 0, 3), 0xc0, 0x0400);
165 pci_write_config32(PCI_DEV(0, 0, 3), 0xc4, 0x00000000);
166 pci_write_config32(PCI_DEV(0, 0, 3), 0xd8, 0xff00c308);
167 pci_write_config32(PCI_DEV(0, 0, 3), 0xdc, 0x00000025);
168 pci_write_config32(PCI_DEV(0, 0, 3), 0xe0, 0x001f002a);
169 pci_write_config32(PCI_DEV(0, 0, 3), 0xe4, 0x009f0098);
170 pci_write_config32(PCI_DEV(0, 0, 3), 0xec, 0x00000400);
171 pci_write_config32(PCI_DEV(0, 0, 3), 0xf0, 0xc0000000);
175 static void sdram_set_spd_registers(const struct mem_controller *ctrl)
177 spd_set_row_attributes(ctrl);
178 spd_set_dram_controller_mode(ctrl);
179 spd_set_dram_timing(ctrl);
180 spd_set_dram_size(ctrl);
181 spd_set_dram_pwr_management(ctrl);
182 spd_set_dram_throttle_control(ctrl);
183 spd_set_undocumented_registers(ctrl);
186 static void ram_command(const struct mem_controller *ctrl,
192 drc_reg = pci_read_config32(ctrl->d0, 0x70);
193 drc_reg &= ~(7 << 4);
194 drc_reg |= (command << 4);
195 pci_write_config8(ctrl->d0, 0x70, drc_reg);
199 static void ram_command_mrs(const struct mem_controller *ctrl,
205 uint32_t adjusted_mode;
207 drc_reg = pci_read_config32(ctrl->d0, 0x70);
208 drc_reg &= ~(7 << 4);
209 drc_reg |= (command << 4);
210 pci_write_config8(ctrl->d0, 0x70, drc_reg);
211 /* Host address lines [13:3] map to DIMM address lines [11, 9:0] */
212 adjusted_mode = ((mode & 0x800) << (13 - 11)) | ((mode & 0x3ff) << (12 - 9));
213 print_debug("Setting mode: ");
214 print_debug_hex32(adjusted_mode + addr);
216 read32(adjusted_mode + addr);
219 static void set_initialize_complete(const struct mem_controller *ctrl)
223 drc_reg = pci_read_config32(ctrl->d0, 0x70);
224 drc_reg |= (1 << 29);
225 pci_write_config32(ctrl->d0, 0x70, drc_reg);
228 static void sdram_enable(int controllers, const struct mem_controller *ctrl)
231 uint32_t rank1 = (1 << 30) / 2;
232 print_debug("Ram enable 1\r\n");
236 print_debug("Ram enable 2\r\n");
237 ram_command(ctrl, 1, 0);
238 ram_command(ctrl, 1, rank1);
242 print_debug("Ram enable 3\r\n");
243 ram_command(ctrl, 2, 0);
244 ram_command(ctrl, 2, rank1);
248 print_debug("Ram enable 4\r\n");
249 ram_command_mrs(ctrl, 4, SDRAM_EXTMODE_DLL_ENABLE, 0);
250 ram_command_mrs(ctrl, 4, SDRAM_EXTMODE_DLL_ENABLE, rank1);
254 print_debug("Ram enable 5\r\n");
255 ram_command_mrs(ctrl, 3, VG85X_MODE | SDRAM_MODE_DLL_RESET, 0);
256 ram_command_mrs(ctrl, 3, VG85X_MODE | SDRAM_MODE_DLL_RESET, rank1);
258 print_debug("Ram enable 6\r\n");
259 ram_command(ctrl, 2, 0);
260 ram_command(ctrl, 2, rank1);
264 print_debug("Ram enable 7\r\n");
265 for(i = 0; i < 8; i++) {
266 ram_command(ctrl, 6, 0);
267 ram_command(ctrl, 6, rank1);
272 print_debug("Ram enable 8\r\n");
273 ram_command_mrs(ctrl, 3, VG85X_MODE | SDRAM_MODE_NORMAL, 0);
274 ram_command_mrs(ctrl, 3, VG85X_MODE | SDRAM_MODE_NORMAL, rank1);
276 print_debug("Ram enable 9\r\n");
277 ram_command(ctrl, 7, 0);
278 ram_command(ctrl, 7, rank1);
282 print_debug("Ram enable 9\r\n");
283 set_initialize_complete(ctrl);
289 print_debug("After configuration:\r\n");
290 /* dump_pci_devices(); */
293 print_debug("\n\n***** RAM TEST *****\r\n");
294 ram_check(0, 0xa0000);
295 ram_check(0x100000, 0x40000000);