2 * This file is part of the coreboot project.
4 * Copyright (C) 2009 One Laptop per Child, Association, 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
25 #include <device/pci_def.h>
26 #include <device/pci_ids.h>
28 #include <device/pnp_def.h>
29 #include <arch/romcc_io.h>
31 #include "pc80/serial.c"
32 #include "console/console.c"
33 #include "lib/ramtest.c"
34 #include "northbridge/via/vx800/vx800.h"
35 #include "cpu/x86/mtrr/earlymtrr.c"
36 #include "cpu/x86/bist.h"
37 #include "pc80/udelay_io.c"
38 #include "lib/delay.c"
39 #include "lib/memcpy.c"
40 #include "cpu/x86/lapic/boot_cpu.c"
41 #include "driving_clk_phase_data.c"
42 #include "northbridge/via/vx800/raminit.h"
43 #include "northbridge/via/vx800/raminit.c"
45 static int acpi_is_wakeup_early_via_vx800(void)
50 print_debug("In acpi_is_wakeup_early_via_vx800\n");
51 /* Power management controller */
52 dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
53 PCI_DEVICE_ID_VIA_VX855_LPC), 0);
55 if (dev == PCI_DEV_INVALID)
56 die("Power management controller not found\n");
58 /* Set ACPI base address to I/O VX800_ACPI_IO_BASE. */
59 pci_write_config16(dev, 0x88, VX800_ACPI_IO_BASE | 0x1);
61 /* Enable ACPI accessm RTC signal gated with PSON. */
62 pci_write_config8(dev, 0x81, 0x84);
64 tmp = inw(VX800_ACPI_IO_BASE + 0x04);
65 result = ((tmp & (7 << 10)) >> 10) == 1 ? 3 : 0;
66 print_debug(" boot_mode=");
67 print_debug_hex16(result);
72 static inline int spd_read_byte(unsigned device, unsigned address)
74 return smbus_read_byte(device, address);
77 static void enable_mainboard_devices(void)
82 print_debug("In enable_mainboard_devices \n");
85 Enable P2P Bridge Header for External PCI BUS.
87 dev = pci_locate_device(PCI_ID(0x1106, 0xa353), 0);
88 pci_write_config8(dev, 0x4f, 0x41);
91 static void enable_shadow_ram(void)
94 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0xff);
95 /* 0xf0000-0xfffff - ACPI tables */
96 shadowreg = pci_read_config8(PCI_DEV(0, 0, 3), 0x83);
98 pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
99 /* 0xe0000-0xeffff - elfload? */
101 pci_write_config8(PCI_DEV(0, 0, 3), 0x82, 0xff);
105 this table contains the value needed to be set before begin to init dram.
106 Note: REV_Bx should be cared when porting a new board!!!!! */
107 static const struct VIA_PCI_REG_INIT_TABLE mNbStage1InitTbl[] = {
109 0x00, 0xFF, NB_APIC_REG(0x61), 0xFF, 0x0E, // Set Exxxxxxx as pcie mmio config range
110 0x00, 0xFF, NB_APIC_REG(0x60), 0xF4, 0x0B, // Support extended cfg address of pcie
111 //0x00, 0xFF, NB_APIC_REG(0x42), 0xF9, 0x02, // APIC Interrupt((BT_INTR)) Control
112 // Set ROMSIP value by software
114 /*0x00, 0xFF, NB_HOST_REG(0x70), 0x77, 0x33, // 2x Host Adr Strobe/Pad Pullup Driving = 3
115 0x00, 0xFF, NB_HOST_REG(0x71), 0x77, 0x33, // 2x Host Adr Strobe/Pad Pulldown Driving = 3
116 0x00, 0xFF, NB_HOST_REG(0x72), 0x77, 0x33, // 4x Host Dat Strobe/Pad Pullup Driving = 3
117 0x00, 0xFF, NB_HOST_REG(0x73), 0x77, 0x33, // 4x Host Dat Strobe/Pad Pulldown Driving = 3
118 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0x21, // Memory I/F timing ctrl
119 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0xE1, // Memory I/F timing ctrl
120 0x00, 0xFF, NB_HOST_REG(0x75), 0xFF, 0x18, // AGTL+ I/O Circuit
121 0x00, 0xFF, NB_HOST_REG(0x76), 0xFB, 0x0C, // AGTL+ Compensation Status
122 0x00, 0xFF, NB_HOST_REG(0x78), 0xFF, 0x33, // 2X AGTL+ Auto Compensation Offset
123 0x00, 0xFF, NB_HOST_REG(0x79), 0xFF, 0x33, // 4X AGTL+ Auto Compensation Offset
124 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x72, // AGTL Compensation Status
125 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x77, // AGTL Compensation Status
126 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x44, // Input Host Address / Host Strobe Delay Control for HA Group
127 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x22, // Input Host Address / Host Strobe Delay Control for HA Group
128 0x00, 0xFF, NB_HOST_REG(0x7C), 0xFF, 0x00, // Output Delay Control of PAD for HA Group
129 0x00, 0xFF, NB_HOST_REG(0x7D), 0xFF, 0xAA, // Host Address / Address Clock Output Delay Control (Only for P4 Bus)
130 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x10, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
131 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x40, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
132 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x10, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
133 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x40, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
134 0x00, 0xFF, NB_HOST_REG(0x80), 0x3F, 0x44, // Host Data Receiving Strobe Delay Ctrl 1
135 0x00, 0xFF, NB_HOST_REG(0x81), 0xFF, 0x44, // Host Data Receiving Strobe Delay Ctrl 2
136 0x00, 0xFF, NB_HOST_REG(0x82), 0xFF, 0x00, // Output Delay of PAD for HDSTB
137 0x00, 0xFF, NB_HOST_REG(0x83), 0xFF, 0x00, // Output Delay of PAD for HD
138 0x00, 0xFF, NB_HOST_REG(0x84), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 0)
139 0x00, 0xFF, NB_HOST_REG(0x85), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 1)
140 0x00, 0xFF, NB_HOST_REG(0x86), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 2)
141 0x00, 0xFF, NB_HOST_REG(0x87), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 3) */
144 // CPU Host Bus Control
145 0x00, 0xFF, NB_HOST_REG(0x50), 0x1F, 0x08, // Request phase ctrl: Dynamic Defer Snoop Stall Count = 8
146 //0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7F, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
147 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7C, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
148 0x00, 0xFF, NB_HOST_REG(0x52), 0xCB, 0xCB, // CPU I/F Ctrl-2: Enable all for performance
149 //0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x88, // Arbitration: Host/Master Occupancy timer = 8*4 HCLK
150 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x44, // Arbitration: Host/Master Occupancy timer = 4*4 HCLK
151 0x00, 0xFF, NB_HOST_REG(0x54), 0x1E, 0x1C, // Misc Ctrl: Enable 8QW burst Mem Access
152 //0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x06, // Miscellaneous Control 2
153 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x04, // Miscellaneous Control 2
154 0x00, 0xFF, NB_HOST_REG(0x56), 0xF7, 0x63, // Write Policy 1
155 //0x00, 0xFF, NB_HOST_REG(0x59), 0x3D, 0x01, // CPU Miscellaneous Control 1, enable Lowest-Priority IPL
156 //0x00, 0xFF, NB_HOST_REG(0x5c), 0xFF, 0x00, // CPU Miscellaneous Control 2
157 0x00, 0xFF, NB_HOST_REG(0x5D), 0xFF, 0xA2, // Write Policy
158 0x00, 0xFF, NB_HOST_REG(0x5E), 0xFF, 0x88, // Bandwidth Timer
159 0x00, 0xFF, NB_HOST_REG(0x5F), 0x46, 0x46, // CPU Misc Ctrl
160 // 0x00, 0xFF, NB_HOST_REG(0x90), 0xFF, 0x0B, // CPU Miscellaneous Control 3
161 //0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0B, // CPU Miscellaneous Control 2
162 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0A, // CPU Miscellaneous Control 2
163 0x00, 0xFF, NB_HOST_REG(0x98), 0xC1, 0x41, // CPU Miscellaneous Control 3
164 0x00, 0xFF, NB_HOST_REG(0x99), 0x0E, 0x06, // CPU Miscellaneous Control 4
167 // Set APIC and SMRAM
168 0x00, 0xFF, NB_HOST_REG(0x97), 0xFF, 0x00, // APIC Related Control
169 0x00, 0xFF, NB_DRAMC_REG(0x86), 0xD6, 0x29, // SMM and APIC Decoding: enable APIC, MSI and SMRAM A-Seg
170 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // End of the table
173 #define USE_VCP 1 //0 means use DVP
177 #define gCom1Base 0x3f8
178 #define gCom2Base 0x2f8
180 void EmbedComInit(void)
185 //enable NB multiple function control
186 ByteVal = pci_read_config8(PCI_DEV(0, 0, 0), 0x4f);
187 ByteVal = ByteVal | 0x01;
188 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, ByteVal);
191 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA1);
192 ByteVal = ByteVal | 0x80;
193 pci_write_config8(PCI_DEV(0, 0, 3), 0xA1, ByteVal);
195 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA7);
196 ByteVal = ByteVal | 0x08;
197 pci_write_config8(PCI_DEV(0, 0, 3), 0xA7, ByteVal);
200 ByteVal = pci_read_config8(PCI_DEV(0, 1, 0), 0x4);
201 ByteVal = ByteVal | 0x07;
202 pci_write_config8(PCI_DEV(0, 1, 0), 0x4, ByteVal);
204 //Turn on Graphic chip IO port port access
205 ByteVal = inb(0x3C3);
206 ByteVal = ByteVal | 0x01;
207 outb(ByteVal, 0x3C3);
209 //Turn off Graphic chip Register protection
211 ByteVal = inb(0x3C5);
212 ByteVal = ByteVal | 0x01;
213 outb(ByteVal, 0x3C5);
215 //south module pad share enable 0x3C5.78[7]
217 ByteVal = inb(0x3C5);
218 ByteVal = ByteVal | 0x80;
219 outb(ByteVal, 0x3C5);
221 //enable UART Function multiplex with DVP or VCP pad D17F0Rx46[7,6]
222 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0x46);
225 ByteVal = (ByteVal & 0x3F) | 0x40;
228 ByteVal = (ByteVal & 0x3F) | 0xC0;
229 pci_write_config8(PCI_DEV(0, 17, 0), 0x46, ByteVal);
231 //enable embeded com1 and com2 D17F0RxB0[5,4]
232 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xB0);
233 ByteVal = ByteVal & 0xcf;
236 ByteVal = ByteVal | 0x10;
238 ByteVal = ByteVal | 0x20;
239 pci_write_config8(PCI_DEV(0, 17, 0), 0xB0, ByteVal);
248 //set embeded com1 IO base = 0x3E8
252 ByteVal = (u8) ((gCom1Base >> 3) | 0x80);
253 pci_write_config8(PCI_DEV(0, 17, 0), 0xB4, ByteVal);
254 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
255 ByteVal = (ByteVal & 0xf0) | 0x04;
256 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
258 //set embeded com2 IO base = 0x2E8
262 ByteVal = (u8) ((gCom2Base >> 3) | 0x80);
263 pci_write_config8(PCI_DEV(0, 17, 0), 0xB5, ByteVal);
264 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
265 ByteVal = (ByteVal & 0x0f) | 0x30;
266 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
268 //no port 80 biger then 0x10
271 ByteVal = inb(ComBase + 3);
272 outb(ByteVal & 0x7F, ComBase + 3);
273 outb(0x00, ComBase + 1);
276 ByteVal = inb(ComBase + 3);
277 outb(ByteVal | 0x80, ComBase + 3);
279 outb(0x00, ComBase + 1);
282 ByteVal = inb(ComBase + 3);
283 outb(ByteVal & 0x3F, ComBase + 3);
284 outb(0x03, ComBase + 3);
285 outb(0x00, ComBase + 2);
286 outb(0x00, ComBase + 4);
288 //SOutput("Embeded com output\n");
292 void main(unsigned long bist)
294 unsigned cpu_reset = 0;
299 /* Enable multifunction for northbridge. */
300 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, 0x01);
302 //enable_vx800_serial();
334 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBA,
335 PCI_DEVICE_ID_VIA_VX855_IDE);
336 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBE,
337 PCI_DEVICE_ID_VIA_VX855_IDE);
338 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA0, PCI_VENDOR_ID_VIA);
339 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA2,
340 PCI_DEVICE_ID_VIA_VX855_LPC);
341 Data8 = pci_read_config8(PCI_DEV(0, 0x11, 0), 0x79);
344 pci_write_config8(PCI_DEV(0, 0x11, 0), 0x79, Data8);
345 pci_write_config16(PCI_DEV(0, 0x11, 0), 0x72,
346 PCI_DEVICE_ID_VIA_VX855_LPC);
348 console_init(); //there are to function defination of console_init(), while the src/archi386/lib is the right one
350 /* decide if this is a s3 wakeup or a normal boot */
351 boot_mode = acpi_is_wakeup_early_via_vx800();
352 /*add this, to transfer "cpu restart" to "cold boot"
353 When this boot is not a S3 resume, and PCI registers had been written,
354 then this must be a cpu restart(result of os reboot cmd). so we need a real "cold boot". */
356 && (pci_read_config8(PCI_DEV(0, 0, 3), 0x80) != 0)) {
360 /*x86 cold boot I/O cmd */
362 //smbus_fixup(&ctrl);// this fix does help vx800!, but vx855 no need this
365 // CAR need mtrr untill mem is ok, so i disable this early_mtrr_init();
366 //print_debug("doing early_mtrr\n");
370 /* Halt if there was a built-in self test failure. */
371 report_bist_failure(bist);
373 print_debug("Enabling mainboard devices\n");
374 enable_mainboard_devices();
378 /* Get NB Chip revision from D0F4RxF6, revision will be used in via_pci_inittable */
379 device = PCI_DEV(0, 0, 4);
380 Data = pci_read_config8(device, 0xf6);
381 print_debug("NB chip revision =");
382 print_debug_hex8(Data);
384 /* make NB ready before draminit */
385 via_pci_inittable(Data, mNbStage1InitTbl);
388 When resume from s3, draminit is skiped, so need to recovery any PCI register related to draminit.
389 and d0f3 didnt lost its Power during whole s3 time, so any register not belongs to d0f3 need to be recoveried . */
391 if (boot_mode == 3) {
393 u8 ramregs[] = { 0x43, 0x42, 0x41, 0x40 };
394 DRAM_SYS_ATTR DramAttr;
396 print_debug("This is a S3 wakeup\n");
398 memset(&DramAttr, 0, sizeof(DRAM_SYS_ATTR));
399 /*Step1 DRAM Detection; DDR1 or DDR2; Get SPD Data; Rank Presence;64 or 128bit; Unbuffered or registered; 1T or 2T */
400 DRAMDetect(&DramAttr);
402 /*begin to get ram size, 43,42 41 40 contains the end address of last rank in ddr2-slot */
403 device = PCI_DEV(0, 0, 3);
404 for (rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) {
405 rambits = pci_read_config8(device, ramregs[i]);
410 DRAMDRDYSetting(&DramAttr);
412 Data = 0x80; // this value is same with dev_init.c
413 pci_write_config8(PCI_DEV(0, 0, 4), 0xa3, Data);
414 pci_write_config8(PCI_DEV(0, 17, 7), 0x60, rambits << 2);
415 Data = pci_read_config8(MEMCTRL, 0x88);
416 pci_write_config8(PCI_DEV(0, 17, 7), 0xE5, Data);
418 DRAMRegFinalValue(&DramAttr); // I just copy this function from draminit to here!
419 SetUMARam(); // I just copy this function from draminit to here!
420 print_debug("Resume from S3, RAM init was ignored\n");
423 ram_check(0, 640 * 1024);
427 /*this line is the same with cx700 port . */
431 For coreboot most time of S3 resume is the same as normal boot, so some memory area under 1M become dirty,
432 so before this happen, I need to backup the content of mem to top-mem.
433 I will reserve the 1M top-men in LBIO table in coreboot_table.c and recovery the content of 1M-mem in wakeup.c
435 #if PAYLOAD_IS_SEABIOS==1 //
436 if (boot_mode == 3) {
437 /* some idea of Libo.Feng at amd.com in http://www.coreboot.org/pipermail/coreboot/2008-December/043111.html
438 I want move the 1M data, I have to set some MTRRs myself. */
439 /* seting mtrr before back memoy save s3 resume time about 0.14 seconds */
440 /*because CAR stack use cache, and here to use cache , must be careful,
441 1 during these mtrr code, must no function call, (after this mtrr, I think it should be ok to use function)
442 2 before stack switch, no use variable that have value set before this
443 3 due to 2, take care of "cpu_reset", I directlly set it to ZERO.
445 u32 memtop = *(u32 *) WAKE_MEM_INFO;
446 u32 memtop1 = *(u32 *) WAKE_MEM_INFO - 0x100000;
447 u32 memtop2 = *(u32 *) WAKE_MEM_INFO - 0x200000;
449 *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000;
451 *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000 +
453 /* __asm__ volatile (
454 "movl $0x204, %%ecx\n\t"
455 "xorl %%edx, %%edx\n\t"
457 "orl $(0 | 6), %%eax\n\t"
460 "movl $0x205, %%ecx\n\t"
461 "xorl %%edx, %%edx\n\t"
462 "movl $0x100000,%%eax\n\t"
465 "orl $(0 | 0x800), %%eax\n\t"
470 "movl $0x206, %%ecx\n\t"
471 "xorl %%edx, %%edx\n\t"
473 "orl $(0 | 6), %%eax\n\t"
476 "movl $0x207, %%ecx\n\t"
477 "xorl %%edx, %%edx\n\t"
478 "movl $0x100000,%%eax\n\t"
481 "orl $(0 | 0x800), %%eax\n\t"
486 "movl $0x208, %ecx\n\t"
487 "xorl %edx, %edx\n\t"
489 "orl $(0 | 6), %eax\n\t"
492 "movl $0x209, %ecx\n\t"
493 "xorl %edx, %edx\n\t"
494 "movl $0x100000,%eax\n\t"
497 "orl $(0 | 0x800), %eax\n\t"
501 // WAKE_MEM_INFO is inited in get_set_top_available_mem in tables.c
502 // these two memcpy not not be enabled if set the MTRR around this two lines.
506 "movl $0xa0000, %%ecx\n\t"
512 "movl $0xe0000, %%esi\n\t"
514 "movl $0x20000, %%ecx\n\t"
519 print_debug("copy memory to high memory to protect s3 wakeup vector code \n"); //this can have function call, because no variable used before this
520 memcpy((unsigned char *) ((*(u32 *) WAKE_MEM_INFO) -
521 64 * 1024 - 0x100000),
522 (unsigned char *) 0, 0xa0000);
523 memcpy((unsigned char *) ((*(u32 *) WAKE_MEM_INFO) -
524 64 * 1024 - 0x100000 + 0xe0000),
525 (unsigned char *) 0xe0000, 0x20000);
527 /* restore the MTRR previously modified. */
528 /* __asm__ volatile (
530 "xorl %edx, %edx\n\t"
531 "xorl %eax, %eax\n\t"
532 "movl $0x204, %ecx\n\t"
534 "movl $0x205, %ecx\n\t"
536 "movl $0x206, %ecx\n\t"
538 "movl $0x207, %ecx\n\t"
540 "movl $0x208, %ecx\n\t"
542 "movl $0x209, %ecx\n\t"