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; version 2 of the License.
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
21 * Part of this file is from cx700 port, part of is from cn700 port,
22 * and acpi_is_wakeup_early_via_VX800() is part of Rudolf's S3 patch.
25 #define RAMINIT_SYSINFO 1
26 #define CACHE_AS_RAM_ADDRESS_DEBUG 0
29 #include <device/pci_def.h>
30 #include <device/pci_ids.h>
32 #include <device/pnp_def.h>
33 #include <arch/romcc_io.h>
35 #include "pc80/serial.c"
36 #include "console/console.c"
37 #include "lib/ramtest.c"
38 #include "northbridge/via/vx800/vx800.h"
39 #include "cpu/x86/mtrr/earlymtrr.c"
40 #include "cpu/x86/bist.h"
41 #include "pc80/udelay_io.c"
42 #include "lib/delay.c"
45 /* This file contains the board-special SI value for raminit.c. */
46 #include "driving_clk_phase_data.c"
48 #include "northbridge/via/vx800/raminit.h"
49 #include "northbridge/via/vx800/raminit.c"
53 #include "superio/winbond/w83697hf/w83697hf_early_serial.c"
55 #define SERIAL_DEV PNP_DEV(0x2e, W83697HF_SP1)
58 * This acpi_is_wakeup_early_via_VX800 is from Rudolf's patch on the list:
59 * http://www.coreboot.org/pipermail/coreboot/2008-January/028787.html.
61 static int acpi_is_wakeup_early_via_vx800(void)
66 print_debug("In acpi_is_wakeup_early_via_vx800\n");
67 /* Power management controller */
68 dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
69 PCI_DEVICE_ID_VIA_VX855_LPC), 0);
71 if (dev == PCI_DEV_INVALID)
72 die("Power management controller not found\n");
74 /* Set ACPI base address to I/O VX800_ACPI_IO_BASE. */
75 pci_write_config16(dev, 0x88, VX800_ACPI_IO_BASE | 0x1);
77 /* Enable ACPI accessm RTC signal gated with PSON. */
78 pci_write_config8(dev, 0x81, 0x84);
80 tmp = inw(VX800_ACPI_IO_BASE + 0x04);
81 result = ((tmp & (7 << 10)) >> 10) == 1 ? 3 : 0;
82 print_debug(" boot_mode=");
83 print_debug_hex16(result);
88 static inline int spd_read_byte(unsigned device, unsigned address)
90 return smbus_read_byte(device, address);
93 /* All content of this function came from the cx700 port of coreboot. */
94 static void enable_mainboard_devices(void)
99 * Add and close this switch, since some line cause error, some
100 * written at elsewhere (stage1 stage2).
103 dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
104 PCI_DEVICE_ID_VIA_VX855_LPC), 0);
107 pci_write_config8(dev, 0x98, 0x00);
109 pci_write_config8(dev, 0x50, 0x80); /* Disable mc97. */
112 * Martin: Disable internal KBC configuration.
114 * Internal Config is needed to decide which key can be pressed to
117 pci_write_config8(dev, 0x51, 0x2d);
119 /* This causes irq0 can not be triggerd, since bit 5 was set to 0. */
120 /* pci_write_config8(dev, 0x58, 0x42); */
122 /* These writing may... TODO */
123 regdata = pci_read_config8(dev, 0x58);
125 pci_write_config8(dev, 0x58, regdata);
126 pci_write_config8(dev, 0x59, 0x80);
127 pci_write_config8(dev, 0x5b, 0x01);
130 print_debug("In enable_mainboard_devices \n");
132 /* Enable P2P Bridge Header for external PCI bus. */
133 dev = pci_locate_device(PCI_ID(0x1106, 0xa353), 0);
134 pci_write_config8(dev, 0x4f, 0x41);
137 * "5324" already is the default value of the PCI IDE device, cancel
140 * [william 20080124]: Fix bug that can not boot Ubuntu at the
145 dev = pci_locate_device(PCI_ID(0x1106, PCI_DEVICE_ID_VIA_VX855_IDE), 0);
148 values = pci_read_config16(dev, 0xBA);
151 pci_write_config16(dev, 0xBA, values);
156 * Most content of this function came from the cx700 port of coreboot.
157 * Turn on the shadow of E-seg.
159 static void enable_shadow_ram(void)
164 * Changed the value from 0x2a to 0x3f. "read only" may block "write"?
165 * and maybe in C-seg "write" will be needed?
167 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0xff);
169 /* 0xf0000-0xfffff - ACPI tables */
170 shadowreg = pci_read_config8(PCI_DEV(0, 0, 3), 0x83);
172 pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
174 /* 0xe0000-0xeffff - elfload? */
176 * In s3 resume process, wakeup.c, I use E-seg to hold the code
177 * (which can not locate in the area to be covered) that will copy
178 * 0-A-seg and F-seg from TOP-mem back to their normal location.
180 pci_write_config8(PCI_DEV(0, 0, 3), 0x82, 0xff);
183 /* Enable shadow RAM as normal DRAM */
184 /* 0xc0000-0xcffff - VGA BIOS */
185 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0x2a);
186 pci_write_config8(PCI_DEV(0, 0, 7), 0x61, 0x00);
187 /* 0xd0000-0xdffff - ?? */
188 /* pci_write_config8(PCI_DEV(0, 0, 3), 0x81, 0xff); */
189 /* pci_write_config8(PCI_DEV(0, 0, 7), 0x62, 0xff); */
191 /* Do it again for the vlink controller. */
192 shadowreg = pci_read_config8(PCI_DEV(0, 0, 7), 0x63);
194 pci_write_config8(PCI_DEV(0, 0, 7), 0x63, shadowreg);
199 * Added this table 2008-11-28.
200 * This table contains the value needed to be set before begin to init DRAM.
201 * Note: REV_Bx should be checked for changes when porting a new board!
203 static const struct VIA_PCI_REG_INIT_TABLE mNbStage1InitTbl[] = {
204 /* VT3409 no PCI-E */
205 { 0x00, 0xFF, NB_APIC_REG(0x61), 0xFF, 0x0E }, // Set Exxxxxxx as pcie mmio config range
206 { 0x00, 0xFF, NB_APIC_REG(0x60), 0xF4, 0x0B }, // Support extended cfg address of pcie
207 // { 0x00, 0xFF, NB_APIC_REG(0x42), 0xF9, 0x02 }, // APIC Interrupt((BT_INTR)) Control
208 // Set ROMSIP value by software
211 { 0x00, 0xFF, NB_HOST_REG(0x70), 0x77, 0x33 }, // 2x Host Adr Strobe/Pad Pullup Driving = 3
212 { 0x00, 0xFF, NB_HOST_REG(0x71), 0x77, 0x33 }, // 2x Host Adr Strobe/Pad Pulldown Driving = 3
213 { 0x00, 0xFF, NB_HOST_REG(0x72), 0x77, 0x33 }, // 4x Host Dat Strobe/Pad Pullup Driving = 3
214 { 0x00, 0xFF, NB_HOST_REG(0x73), 0x77, 0x33 }, // 4x Host Dat Strobe/Pad Pulldown Driving = 3
215 { 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0x21 }, // Memory I/F timing ctrl
216 { 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0xE1 }, // Memory I/F timing ctrl
217 { 0x00, 0xFF, NB_HOST_REG(0x75), 0xFF, 0x18 }, // AGTL+ I/O Circuit
218 { 0x00, 0xFF, NB_HOST_REG(0x76), 0xFB, 0x0C }, // AGTL+ Compensation Status
219 { 0x00, 0xFF, NB_HOST_REG(0x78), 0xFF, 0x33 }, // 2X AGTL+ Auto Compensation Offset
220 { 0x00, 0xFF, NB_HOST_REG(0x79), 0xFF, 0x33 }, // 4X AGTL+ Auto Compensation Offset
221 { 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x72 }, // AGTL Compensation Status
222 { 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x77 }, // AGTL Compensation Status
223 { 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x44 }, // Input Host Address / Host Strobe Delay Control for HA Group
224 { 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x22 }, // Input Host Address / Host Strobe Delay Control for HA Group
225 { 0x00, 0xFF, NB_HOST_REG(0x7C), 0xFF, 0x00 }, // Output Delay Control of PAD for HA Group
226 { 0x00, 0xFF, NB_HOST_REG(0x7D), 0xFF, 0xAA }, // Host Address / Address Clock Output Delay Control (Only for P4 Bus)
227 { 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x10 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
228 { 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x40 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
229 { 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x10 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
230 { 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x40 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
231 { 0x00, 0xFF, NB_HOST_REG(0x80), 0x3F, 0x44 }, // Host Data Receiving Strobe Delay Ctrl 1
232 { 0x00, 0xFF, NB_HOST_REG(0x81), 0xFF, 0x44 }, // Host Data Receiving Strobe Delay Ctrl 2
233 { 0x00, 0xFF, NB_HOST_REG(0x82), 0xFF, 0x00 }, // Output Delay of PAD for HDSTB
234 { 0x00, 0xFF, NB_HOST_REG(0x83), 0xFF, 0x00 }, // Output Delay of PAD for HD
235 { 0x00, 0xFF, NB_HOST_REG(0x84), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 0)
236 { 0x00, 0xFF, NB_HOST_REG(0x85), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 1)
237 { 0x00, 0xFF, NB_HOST_REG(0x86), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 2)
238 { 0x00, 0xFF, NB_HOST_REG(0x87), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 3)
241 // CPU Host Bus Control
242 { 0x00, 0xFF, NB_HOST_REG(0x50), 0x1F, 0x08 }, // Request phase ctrl: Dynamic Defer Snoop Stall Count = 8
243 // { 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7F }, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
244 { 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7C }, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
245 { 0x00, 0xFF, NB_HOST_REG(0x52), 0xCB, 0xCB }, // CPU I/F Ctrl-2: Enable all for performance
246 // { 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x88 }, // Arbitration: Host/Master Occupancy timer = 8*4 HCLK
247 { 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x44 }, // Arbitration: Host/Master Occupancy timer = 4*4 HCLK
248 { 0x00, 0xFF, NB_HOST_REG(0x54), 0x1E, 0x1C }, // Misc Ctrl: Enable 8QW burst Mem Access
249 // { 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x06 }, // Miscellaneous Control 2
250 { 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x04 }, // Miscellaneous Control 2
251 { 0x00, 0xFF, NB_HOST_REG(0x56), 0xF7, 0x63 }, // Write Policy 1
252 // { 0x00, 0xFF, NB_HOST_REG(0x59), 0x3D, 0x01 }, // CPU Miscellaneous Control 1, enable Lowest-Priority IPL
253 // { 0x00, 0xFF, NB_HOST_REG(0x5c), 0xFF, 0x00 }, // CPU Miscellaneous Control 2
254 { 0x00, 0xFF, NB_HOST_REG(0x5D), 0xFF, 0xA2 }, // Write Policy
255 { 0x00, 0xFF, NB_HOST_REG(0x5E), 0xFF, 0x88 }, // Bandwidth Timer
256 { 0x00, 0xFF, NB_HOST_REG(0x5F), 0x46, 0x46 }, // CPU Misc Ctrl
257 // { 0x00, 0xFF, NB_HOST_REG(0x90), 0xFF, 0x0B }, // CPU Miscellaneous Control 3
258 // { 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0B }, // CPU Miscellaneous Control 2
259 { 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0A }, // CPU Miscellaneous Control 2
260 { 0x00, 0xFF, NB_HOST_REG(0x98), 0xC1, 0x41 }, // CPU Miscellaneous Control 3
261 { 0x00, 0xFF, NB_HOST_REG(0x99), 0x0E, 0x06 }, // CPU Miscellaneous Control 4
263 // Set APIC and SMRAM
264 { 0x00, 0xFF, NB_HOST_REG(0x97), 0xFF, 0x00 }, // APIC Related Control
265 { 0x00, 0xFF, NB_DRAMC_REG(0x86), 0xD6, 0x29 }, // SMM and APIC Decoding: enable APIC, MSI and SMRAM A-Seg
266 { 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } // End of the table
269 #define USE_VCP 1 /* 0 means "use DVP". */
273 #define gCom1Base 0x3f8
274 #define gCom2Base 0x2f8
276 void EmbedComInit(void)
281 /* Enable NB multiple function control. */
282 ByteVal = pci_read_config8(PCI_DEV(0, 0, 0), 0x4f);
283 ByteVal = ByteVal | 0x01;
284 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, ByteVal);
287 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA1);
288 ByteVal = ByteVal | 0x80;
289 pci_write_config8(PCI_DEV(0, 0, 3), 0xA1, ByteVal);
291 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA7);
292 ByteVal = ByteVal | 0x08;
293 pci_write_config8(PCI_DEV(0, 0, 3), 0xA7, ByteVal);
295 /* Enable P2P IO/mem. */
296 ByteVal = pci_read_config8(PCI_DEV(0, 1, 0), 0x4);
297 ByteVal = ByteVal | 0x07;
298 pci_write_config8(PCI_DEV(0, 1, 0), 0x4, ByteVal);
300 /* Turn on graphic chip I/O port port access. */
301 ByteVal = inb(0x3C3);
302 ByteVal = ByteVal | 0x01;
303 outb(ByteVal, 0x3C3);
305 /* Turn off graphic chip register protection. */
307 ByteVal = inb(0x3C5);
308 ByteVal = ByteVal | 0x01;
309 outb(ByteVal, 0x3C5);
311 /* South module pad share enable 0x3C5.78[7]. */
313 ByteVal = inb(0x3C5);
314 ByteVal = ByteVal | 0x80;
315 outb(ByteVal, 0x3C5);
317 /* Enable UART function multiplex with DVP or VCP pad D17F0Rx46[7,6]. */
318 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0x46);
320 ByteVal = (ByteVal & 0x3F) | 0x40; /* Multiplex with VCP. */
322 ByteVal = (ByteVal & 0x3F) | 0xC0; /* Multiplex with DVP. */
323 pci_write_config8(PCI_DEV(0, 17, 0), 0x46, ByteVal);
325 /* Enable embedded COM1 and COM2 D17F0RxB0[5,4]. */
326 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xB0);
327 ByteVal = ByteVal & 0xcf;
328 /* Multiplex with VCP. */
330 ByteVal = ByteVal | 0x10;
332 ByteVal = ByteVal | 0x20;
333 pci_write_config8(PCI_DEV(0, 17, 0), 0xB0, ByteVal);
342 /* Set embedded COM1 I/O base = 0x3E8 (D17F0RB4, ByteVal = 0xFD) */
344 ByteVal = (u8) ((gCom1Base >> 3) | 0x80);
345 pci_write_config8(PCI_DEV(0, 17, 0), 0xB4, ByteVal);
346 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
347 ByteVal = (ByteVal & 0xf0) | 0x04;
348 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
351 /* Set embedded COM2 I/O base = 0x2E8 (D17F0RB5, ByteVal = 0xDD). */
353 ByteVal = (u8) ((gCom2Base >> 3) | 0x80);
354 pci_write_config8(PCI_DEV(0, 17, 0), 0xB5, ByteVal);
355 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
356 ByteVal = (ByteVal & 0x0f) | 0x30;
357 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
359 /* No port 80 biger then 0x10. */
361 /* Disable interrupt. */
362 ByteVal = inb(ComBase + 3);
363 outb(ByteVal & 0x7F, ComBase + 3);
364 outb(0x00, ComBase + 1);
367 ByteVal = inb(ComBase + 3);
368 outb(ByteVal | 0x80, ComBase + 3);
370 outb(0x00, ComBase + 1);
372 /* Set frame format. */
373 ByteVal = inb(ComBase + 3);
374 outb(ByteVal & 0x3F, ComBase + 3);
375 outb(0x03, ComBase + 3);
376 outb(0x00, ComBase + 2);
377 outb(0x00, ComBase + 4);
379 /* SOutput("Embedded COM output\n"); */
383 /* cache_as_ram.inc jumps to here. */
384 void main(unsigned long bist)
387 u8 rambits, Data8, Data;
392 * Enable multifunction for northbridge. These 4 lines (until
393 * console_init()) are the same with epia-cn port.
395 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, 0x01);
396 /* EmbedComInit(); */
397 w83697hf_set_clksel_48(SERIAL_DEV);
398 w83697hf_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
400 /* enable_vx800_serial(); */
420 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBA,
421 PCI_DEVICE_ID_VIA_VX855_IDE);
422 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBE,
423 PCI_DEVICE_ID_VIA_VX855_IDE);
424 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA0, PCI_VENDOR_ID_VIA);
425 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA2,
426 PCI_DEVICE_ID_VIA_VX855_LPC);
427 Data8 = pci_read_config8(PCI_DEV(0, 0x11, 0), 0x79);
430 pci_write_config8(PCI_DEV(0, 0x11, 0), 0x79, Data8);
431 pci_write_config16(PCI_DEV(0, 0x11, 0), 0x72,
432 PCI_DEVICE_ID_VIA_VX855_LPC);
435 * There are two function definitions of console_init(), while the
436 * src/arch/i386/lib is the right one.
440 /* Decide if this is a s3 wakeup or a normal boot. */
441 boot_mode = acpi_is_wakeup_early_via_vx800();
444 * 2008-11-27 Add this, to transfer "cpu restart" to "cold boot".
445 * When this boot is not a S3 resume, and PCI registers had been
446 * written, then this must be a CPU restart (result of OS reboot cmd),
447 * so we need a real "cold boot".
450 && (pci_read_config8(PCI_DEV(0, 0, 3), 0x80) != 0)) {
454 /* x86 cold boot I/O cmd. */
455 /* These 2 lines are the same with epia-cn port. */
458 /* This fix does help vx800!, but vx855 doesn't need this. */
459 /* smbus_fixup(&ctrl); */
463 * CAR needs MTRR until memory is ok, so disable this
464 * early_mtrr_init() call.
467 print_debug("doing early_mtrr\n");
472 /* Halt if there was a built-in self test failure. */
473 report_bist_failure(bist);
475 print_debug("Enabling mainboard devices\n");
476 enable_mainboard_devices();
479 * Get NB chip revision from D0F4RxF6, revision will be used in
482 device = PCI_DEV(0, 0, 4);
483 Data = pci_read_config8(device, 0xf6);
484 print_debug("NB chip revision =");
485 print_debug_hex8(Data);
488 /* Make NB ready before DRAM init. */
489 via_pci_inittable(Data, mNbStage1InitTbl);
492 * When resume from s3, DRAM init is skipped, so need to recovery
493 * any PCI register related to DRAM init. d0f3 didn't lose its power
494 * during whole s3 time, so any register not belonging to d0f3 needs
498 if (boot_mode == 3) {
500 u8 ramregs[] = { 0x43, 0x42, 0x41, 0x40 };
501 DRAM_SYS_ATTR DramAttr;
503 print_debug("This is an S3 wakeup\n");
505 memset(&DramAttr, 0, sizeof(DRAM_SYS_ATTR));
507 * Step 1: DRAM detection; DDR1 or DDR2; Get SPD Data;
508 * Rank Presence; 64 or 128bit; Unbuffered or registered;
511 DRAMDetect(&DramAttr);
514 * Begin to get RAM size, 43,42 41 40 contains the end
515 * address of last rank in DDR2 slot.
517 device = PCI_DEV(0, 0, 3);
518 for (rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) {
519 rambits = pci_read_config8(device, ramregs[i]);
524 DRAMDRDYSetting(&DramAttr);
526 Data = 0x80; /* This value is same with DevInit.c. */
527 pci_write_config8(PCI_DEV(0, 0, 4), 0xa3, Data);
528 pci_write_config8(PCI_DEV(0, 17, 7), 0x60, rambits << 2);
529 Data = pci_read_config8(MEMCTRL, 0x88);
530 pci_write_config8(PCI_DEV(0, 17, 7), 0xE5, Data);
532 /* Just copy this function from draminit to here! */
533 DRAMRegFinalValue(&DramAttr);
535 /* Just copy this function from draminit to here! */
538 print_debug("Resume from S3, RAM init was ignored\n");
541 ram_check(0, 640 * 1024);
545 /* ddr2_ram_setup(); */
546 /* This line is the same with cx700 port. */
550 * For coreboot most time of S3 resume is the same as normal boot,
551 * so some memory area under 1M become dirty, so before this happen,
552 * I need to backup the content of mem to top-mem.
554 * I will reserve the 1M top-men in LBIO table in coreboot_table.c
555 * and recovery the content of 1M-mem in wakeup.c.
557 #if PAYLOAD_IS_SEABIOS == 1
558 if (boot_mode == 3) {
559 /* An idea of Libo.Feng at amd.com in http://www.coreboot.org/pipermail/coreboot/2008-December/043111.html
561 * I want move the 1M data, I have to set some MTRRs myself.
562 * Setting MTRR before back memory save s3 resume time about
565 * !!! Since CAR stack uses cache, and we are using cache
566 * here, we must be careful:
568 * 1. during this MTRR code, must no function call (after
569 * this MTRR, I think it should be OK to use function).
570 * 2. Before stack switch, no use variable that have value
572 * 3. Due to 2, take care of "cpu_reset", I directlly set it
575 u32 memtop = *(u32 *) WAKE_MEM_INFO;
576 u32 memtop1 = *(u32 *) WAKE_MEM_INFO - 0x100000;
577 u32 memtop2 = *(u32 *) WAKE_MEM_INFO - 0x200000;
578 u32 memtop3 = *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000;
580 *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000 + 0xe0000;
583 "movl $0x204, %%ecx\n\t"
584 "xorl %%edx, %%edx\n\t"
586 "orl $(0 | 6), %%eax\n\t"
589 "movl $0x205, %%ecx\n\t"
590 "xorl %%edx, %%edx\n\t"
591 "movl $0x100000,%%eax\n\t"
594 "orl $(0 | 0x800), %%eax\n\t"
600 "movl $0x206, %%ecx\n\t"
601 "xorl %%edx, %%edx\n\t"
603 "orl $(0 | 6), %%eax\n\t"
606 "movl $0x207, %%ecx\n\t"
607 "xorl %%edx, %%edx\n\t"
608 "movl $0x100000,%%eax\n\t"
611 "orl $(0 | 0x800), %%eax\n\t"
617 "movl $0x208, %ecx\n\t"
618 "xorl %edx, %edx\n\t"
620 "orl $(0 | 6), %eax\n\t"
623 "movl $0x209, %ecx\n\t"
624 "xorl %edx, %edx\n\t"
625 "movl $0x100000,%eax\n\t"
628 "orl $(0 | 0x800), %eax\n\t"
634 * WAKE_MEM_INFO is inited in get_set_top_available_mem()
635 * in tables.c these two memcpy() not not be enabled if set
636 * the MTRR around this two lines.
642 "movl $0xa0000, %%ecx\n\t"
649 "movl $0xe0000, %%esi\n\t"
651 "movl $0x20000, %%ecx\n\t"
657 /* This can have function call, because no variable used before this. */
658 print_debug("Copy memory to high memory to protect s3 wakeup vector code \n");
659 memcpy((unsigned char *)((*(u32 *) WAKE_MEM_INFO) - 64 * 1024 -
660 0x100000), (unsigned char *)0, 0xa0000);
661 memcpy((unsigned char *)((*(u32 *) WAKE_MEM_INFO) - 64 * 1024 -
662 0x100000 + 0xe0000), (unsigned char *)0xe0000, 0x20000);
664 /* Restore the MTRR previously modified. */
668 "xorl %edx, %edx\n\t"
669 "xorl %eax, %eax\n\t"
670 "movl $0x204, %ecx\n\t"
672 "movl $0x205, %ecx\n\t"
674 "movl $0x206, %ecx\n\t"
676 "movl $0x207, %ecx\n\t"
678 "movl $0x208, %ecx\n\t"
680 "movl $0x209, %ecx\n\t"