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");
84 /* Enable P2P bridge Header for external PCI bus. */
85 dev = pci_locate_device(PCI_ID(0x1106, 0xa353), 0);
86 pci_write_config8(dev, 0x4f, 0x41);
89 static void enable_shadow_ram(void)
93 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0xff);
94 /* 0xf0000-0xfffff - ACPI tables */
95 shadowreg = pci_read_config8(PCI_DEV(0, 0, 3), 0x83);
97 pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
98 /* 0xe0000-0xeffff - elfload? */
100 pci_write_config8(PCI_DEV(0, 0, 3), 0x82, 0xff);
104 this table contains the value needed to be set before begin to init dram.
105 Note: REV_Bx should be cared when porting a new board!!!!! */
106 static const struct VIA_PCI_REG_INIT_TABLE mNbStage1InitTbl[] = {
108 0x00, 0xFF, NB_APIC_REG(0x61), 0xFF, 0x0E, // Set Exxxxxxx as pcie mmio config range
109 0x00, 0xFF, NB_APIC_REG(0x60), 0xF4, 0x0B, // Support extended cfg address of pcie
110 //0x00, 0xFF, NB_APIC_REG(0x42), 0xF9, 0x02, // APIC Interrupt((BT_INTR)) Control
111 // Set ROMSIP value by software
113 /*0x00, 0xFF, NB_HOST_REG(0x70), 0x77, 0x33, // 2x Host Adr Strobe/Pad Pullup Driving = 3
114 0x00, 0xFF, NB_HOST_REG(0x71), 0x77, 0x33, // 2x Host Adr Strobe/Pad Pulldown Driving = 3
115 0x00, 0xFF, NB_HOST_REG(0x72), 0x77, 0x33, // 4x Host Dat Strobe/Pad Pullup Driving = 3
116 0x00, 0xFF, NB_HOST_REG(0x73), 0x77, 0x33, // 4x Host Dat Strobe/Pad Pulldown Driving = 3
117 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0x21, // Memory I/F timing ctrl
118 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0xE1, // Memory I/F timing ctrl
119 0x00, 0xFF, NB_HOST_REG(0x75), 0xFF, 0x18, // AGTL+ I/O Circuit
120 0x00, 0xFF, NB_HOST_REG(0x76), 0xFB, 0x0C, // AGTL+ Compensation Status
121 0x00, 0xFF, NB_HOST_REG(0x78), 0xFF, 0x33, // 2X AGTL+ Auto Compensation Offset
122 0x00, 0xFF, NB_HOST_REG(0x79), 0xFF, 0x33, // 4X AGTL+ Auto Compensation Offset
123 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x72, // AGTL Compensation Status
124 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x77, // AGTL Compensation Status
125 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x44, // Input Host Address / Host Strobe Delay Control for HA Group
126 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x22, // Input Host Address / Host Strobe Delay Control for HA Group
127 0x00, 0xFF, NB_HOST_REG(0x7C), 0xFF, 0x00, // Output Delay Control of PAD for HA Group
128 0x00, 0xFF, NB_HOST_REG(0x7D), 0xFF, 0xAA, // Host Address / Address Clock Output Delay Control (Only for P4 Bus)
129 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x10, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
130 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x40, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
131 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x10, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
132 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x40, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
133 0x00, 0xFF, NB_HOST_REG(0x80), 0x3F, 0x44, // Host Data Receiving Strobe Delay Ctrl 1
134 0x00, 0xFF, NB_HOST_REG(0x81), 0xFF, 0x44, // Host Data Receiving Strobe Delay Ctrl 2
135 0x00, 0xFF, NB_HOST_REG(0x82), 0xFF, 0x00, // Output Delay of PAD for HDSTB
136 0x00, 0xFF, NB_HOST_REG(0x83), 0xFF, 0x00, // Output Delay of PAD for HD
137 0x00, 0xFF, NB_HOST_REG(0x84), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 0)
138 0x00, 0xFF, NB_HOST_REG(0x85), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 1)
139 0x00, 0xFF, NB_HOST_REG(0x86), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 2)
140 0x00, 0xFF, NB_HOST_REG(0x87), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 3) */
143 // CPU Host Bus Control
144 0x00, 0xFF, NB_HOST_REG(0x50), 0x1F, 0x08, // Request phase ctrl: Dynamic Defer Snoop Stall Count = 8
145 //0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7F, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
146 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7C, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
147 0x00, 0xFF, NB_HOST_REG(0x52), 0xCB, 0xCB, // CPU I/F Ctrl-2: Enable all for performance
148 //0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x88, // Arbitration: Host/Master Occupancy timer = 8*4 HCLK
149 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x44, // Arbitration: Host/Master Occupancy timer = 4*4 HCLK
150 0x00, 0xFF, NB_HOST_REG(0x54), 0x1E, 0x1C, // Misc Ctrl: Enable 8QW burst Mem Access
151 //0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x06, // Miscellaneous Control 2
152 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x04, // Miscellaneous Control 2
153 0x00, 0xFF, NB_HOST_REG(0x56), 0xF7, 0x63, // Write Policy 1
154 //0x00, 0xFF, NB_HOST_REG(0x59), 0x3D, 0x01, // CPU Miscellaneous Control 1, enable Lowest-Priority IPL
155 //0x00, 0xFF, NB_HOST_REG(0x5c), 0xFF, 0x00, // CPU Miscellaneous Control 2
156 0x00, 0xFF, NB_HOST_REG(0x5D), 0xFF, 0xA2, // Write Policy
157 0x00, 0xFF, NB_HOST_REG(0x5E), 0xFF, 0x88, // Bandwidth Timer
158 0x00, 0xFF, NB_HOST_REG(0x5F), 0x46, 0x46, // CPU Misc Ctrl
159 // 0x00, 0xFF, NB_HOST_REG(0x90), 0xFF, 0x0B, // CPU Miscellaneous Control 3
160 //0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0B, // CPU Miscellaneous Control 2
161 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0A, // CPU Miscellaneous Control 2
162 0x00, 0xFF, NB_HOST_REG(0x98), 0xC1, 0x41, // CPU Miscellaneous Control 3
163 0x00, 0xFF, NB_HOST_REG(0x99), 0x0E, 0x06, // CPU Miscellaneous Control 4
166 // Set APIC and SMRAM
167 0x00, 0xFF, NB_HOST_REG(0x97), 0xFF, 0x00, // APIC Related Control
168 0x00, 0xFF, NB_DRAMC_REG(0x86), 0xD6, 0x29, // SMM and APIC Decoding: enable APIC, MSI and SMRAM A-Seg
169 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // End of the table
172 #define USE_VCP 1 //0 means use DVP
176 #define gCom1Base 0x3f8
177 #define gCom2Base 0x2f8
179 void EmbedComInit(void)
184 //enable NB multiple function control
185 ByteVal = pci_read_config8(PCI_DEV(0, 0, 0), 0x4f);
186 ByteVal = ByteVal | 0x01;
187 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, ByteVal);
190 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA1);
191 ByteVal = ByteVal | 0x80;
192 pci_write_config8(PCI_DEV(0, 0, 3), 0xA1, ByteVal);
194 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA7);
195 ByteVal = ByteVal | 0x08;
196 pci_write_config8(PCI_DEV(0, 0, 3), 0xA7, ByteVal);
199 ByteVal = pci_read_config8(PCI_DEV(0, 1, 0), 0x4);
200 ByteVal = ByteVal | 0x07;
201 pci_write_config8(PCI_DEV(0, 1, 0), 0x4, ByteVal);
203 //Turn on Graphic chip IO port port access
204 ByteVal = inb(0x3C3);
205 ByteVal = ByteVal | 0x01;
206 outb(ByteVal, 0x3C3);
208 //Turn off Graphic chip Register protection
210 ByteVal = inb(0x3C5);
211 ByteVal = ByteVal | 0x01;
212 outb(ByteVal, 0x3C5);
214 //south module pad share enable 0x3C5.78[7]
216 ByteVal = inb(0x3C5);
217 ByteVal = ByteVal | 0x80;
218 outb(ByteVal, 0x3C5);
220 //enable UART Function multiplex with DVP or VCP pad D17F0Rx46[7,6]
221 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0x46);
224 ByteVal = (ByteVal & 0x3F) | 0x40;
227 ByteVal = (ByteVal & 0x3F) | 0xC0;
228 pci_write_config8(PCI_DEV(0, 17, 0), 0x46, ByteVal);
230 //enable embeded com1 and com2 D17F0RxB0[5,4]
231 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xB0);
232 ByteVal = ByteVal & 0xcf;
235 ByteVal = ByteVal | 0x10;
237 ByteVal = ByteVal | 0x20;
238 pci_write_config8(PCI_DEV(0, 17, 0), 0xB0, ByteVal);
247 //set embeded com1 IO base = 0x3E8
251 ByteVal = (u8) ((gCom1Base >> 3) | 0x80);
252 pci_write_config8(PCI_DEV(0, 17, 0), 0xB4, ByteVal);
253 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
254 ByteVal = (ByteVal & 0xf0) | 0x04;
255 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
257 //set embeded com2 IO base = 0x2E8
261 ByteVal = (u8) ((gCom2Base >> 3) | 0x80);
262 pci_write_config8(PCI_DEV(0, 17, 0), 0xB5, ByteVal);
263 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
264 ByteVal = (ByteVal & 0x0f) | 0x30;
265 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
267 //no port 80 biger then 0x10
270 ByteVal = inb(ComBase + 3);
271 outb(ByteVal & 0x7F, ComBase + 3);
272 outb(0x00, ComBase + 1);
275 ByteVal = inb(ComBase + 3);
276 outb(ByteVal | 0x80, ComBase + 3);
278 outb(0x00, ComBase + 1);
281 ByteVal = inb(ComBase + 3);
282 outb(ByteVal & 0x3F, ComBase + 3);
283 outb(0x03, ComBase + 3);
284 outb(0x00, ComBase + 2);
285 outb(0x00, ComBase + 4);
287 //SOutput("Embeded com output\n");
291 void main(unsigned long bist)
293 unsigned cpu_reset = 0;
298 /* Enable multifunction for northbridge. */
299 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, 0x01);
301 //enable_vx800_serial();
333 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBA,
334 PCI_DEVICE_ID_VIA_VX855_IDE);
335 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBE,
336 PCI_DEVICE_ID_VIA_VX855_IDE);
337 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA0, PCI_VENDOR_ID_VIA);
338 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA2,
339 PCI_DEVICE_ID_VIA_VX855_LPC);
340 Data8 = pci_read_config8(PCI_DEV(0, 0x11, 0), 0x79);
343 pci_write_config8(PCI_DEV(0, 0x11, 0), 0x79, Data8);
344 pci_write_config16(PCI_DEV(0, 0x11, 0), 0x72,
345 PCI_DEVICE_ID_VIA_VX855_LPC);
347 console_init(); //there are to function defination of console_init(), while the src/archi386/lib is the right one
349 /* decide if this is a s3 wakeup or a normal boot */
350 boot_mode = acpi_is_wakeup_early_via_vx800();
351 /*add this, to transfer "cpu restart" to "cold boot"
352 When this boot is not a S3 resume, and PCI registers had been written,
353 then this must be a cpu restart(result of os reboot cmd). so we need a real "cold boot". */
355 && (pci_read_config8(PCI_DEV(0, 0, 3), 0x80) != 0)) {
359 /*x86 cold boot I/O cmd */
361 //smbus_fixup(&ctrl);// this fix does help vx800!, but vx855 no need this
364 // CAR need mtrr untill mem is ok, so i disable this early_mtrr_init();
365 //print_debug("doing early_mtrr\n");
369 /* Halt if there was a built-in self test failure. */
370 report_bist_failure(bist);
372 print_debug("Enabling mainboard devices\n");
373 enable_mainboard_devices();
377 /* Get NB Chip revision from D0F4RxF6, revision will be used in via_pci_inittable */
378 device = PCI_DEV(0, 0, 4);
379 Data = pci_read_config8(device, 0xf6);
380 print_debug("NB chip revision =");
381 print_debug_hex8(Data);
383 /* make NB ready before draminit */
384 via_pci_inittable(Data, mNbStage1InitTbl);
387 When resume from s3, draminit is skiped, so need to recovery any PCI register related to draminit.
388 and d0f3 didnt lost its Power during whole s3 time, so any register not belongs to d0f3 need to be recoveried . */
390 if (boot_mode == 3) {
392 u8 ramregs[] = { 0x43, 0x42, 0x41, 0x40 };
393 DRAM_SYS_ATTR DramAttr;
395 print_debug("This is a S3 wakeup\n");
397 memset(&DramAttr, 0, sizeof(DRAM_SYS_ATTR));
398 /*Step1 DRAM Detection; DDR1 or DDR2; Get SPD Data; Rank Presence;64 or 128bit; Unbuffered or registered; 1T or 2T */
399 DRAMDetect(&DramAttr);
401 /*begin to get ram size, 43,42 41 40 contains the end address of last rank in ddr2-slot */
402 device = PCI_DEV(0, 0, 3);
403 for (rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) {
404 rambits = pci_read_config8(device, ramregs[i]);
409 DRAMDRDYSetting(&DramAttr);
411 Data = 0x80; // this value is same with dev_init.c
412 pci_write_config8(PCI_DEV(0, 0, 4), 0xa3, Data);
413 pci_write_config8(PCI_DEV(0, 17, 7), 0x60, rambits << 2);
414 Data = pci_read_config8(MEMCTRL, 0x88);
415 pci_write_config8(PCI_DEV(0, 17, 7), 0xE5, Data);
417 DRAMRegFinalValue(&DramAttr); // I just copy this function from draminit to here!
418 SetUMARam(); // I just copy this function from draminit to here!
419 print_debug("Resume from S3, RAM init was ignored\n");
422 ram_check(0, 640 * 1024);
426 /*this line is the same with cx700 port . */
430 For coreboot most time of S3 resume is the same as normal boot, so some memory area under 1M become dirty,
431 so before this happen, I need to backup the content of mem to top-mem.
432 I will reserve the 1M top-men in LBIO table in coreboot_table.c and recovery the content of 1M-mem in wakeup.c
434 #if PAYLOAD_IS_SEABIOS==1 //
435 if (boot_mode == 3) {
436 /* some idea of Libo.Feng at amd.com in http://www.coreboot.org/pipermail/coreboot/2008-December/043111.html
437 I want move the 1M data, I have to set some MTRRs myself. */
438 /* seting mtrr before back memoy save s3 resume time about 0.14 seconds */
439 /*because CAR stack use cache, and here to use cache , must be careful,
440 1 during these mtrr code, must no function call, (after this mtrr, I think it should be ok to use function)
441 2 before stack switch, no use variable that have value set before this
442 3 due to 2, take care of "cpu_reset", I directlly set it to ZERO.
444 u32 memtop = *(u32 *) WAKE_MEM_INFO;
445 u32 memtop1 = *(u32 *) WAKE_MEM_INFO - 0x100000;
446 u32 memtop2 = *(u32 *) WAKE_MEM_INFO - 0x200000;
448 *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000;
450 *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000 +
452 /* __asm__ volatile (
453 "movl $0x204, %%ecx\n\t"
454 "xorl %%edx, %%edx\n\t"
456 "orl $(0 | 6), %%eax\n\t"
459 "movl $0x205, %%ecx\n\t"
460 "xorl %%edx, %%edx\n\t"
461 "movl $0x100000,%%eax\n\t"
464 "orl $(0 | 0x800), %%eax\n\t"
469 "movl $0x206, %%ecx\n\t"
470 "xorl %%edx, %%edx\n\t"
472 "orl $(0 | 6), %%eax\n\t"
475 "movl $0x207, %%ecx\n\t"
476 "xorl %%edx, %%edx\n\t"
477 "movl $0x100000,%%eax\n\t"
480 "orl $(0 | 0x800), %%eax\n\t"
485 "movl $0x208, %ecx\n\t"
486 "xorl %edx, %edx\n\t"
488 "orl $(0 | 6), %eax\n\t"
491 "movl $0x209, %ecx\n\t"
492 "xorl %edx, %edx\n\t"
493 "movl $0x100000,%eax\n\t"
496 "orl $(0 | 0x800), %eax\n\t"
500 // WAKE_MEM_INFO is inited in get_set_top_available_mem in tables.c
501 // these two memcpy not not be enabled if set the MTRR around this two lines.
505 "movl $0xa0000, %%ecx\n\t"
511 "movl $0xe0000, %%esi\n\t"
513 "movl $0x20000, %%ecx\n\t"
518 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
519 memcpy((unsigned char *) ((*(u32 *) WAKE_MEM_INFO) -
520 64 * 1024 - 0x100000),
521 (unsigned char *) 0, 0xa0000);
522 memcpy((unsigned char *) ((*(u32 *) WAKE_MEM_INFO) -
523 64 * 1024 - 0x100000 + 0xe0000),
524 (unsigned char *) 0xe0000, 0x20000);
526 /* restore the MTRR previously modified. */
527 /* __asm__ volatile (
529 "xorl %edx, %edx\n\t"
530 "xorl %eax, %eax\n\t"
531 "movl $0x204, %ecx\n\t"
533 "movl $0x205, %ecx\n\t"
535 "movl $0x206, %ecx\n\t"
537 "movl $0x207, %ecx\n\t"
539 "movl $0x208, %ecx\n\t"
541 "movl $0x209, %ecx\n\t"