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 PAYLOAD_IS_SEABIOS 0
28 #include <device/pci_def.h>
29 #include <device/pci_ids.h>
31 #include <device/pnp_def.h>
32 #include <arch/romcc_io.h>
34 #include <console/console.h>
36 #include "northbridge/via/vx800/vx800.h"
37 #include "cpu/x86/bist.h"
38 #include "pc80/udelay_io.c"
39 #include "lib/delay.c"
42 /* This file contains the board-special SI value for raminit.c. */
43 #include "driving_clk_phase_data.c"
45 #include "northbridge/via/vx800/raminit.h"
46 #include "northbridge/via/vx800/raminit.c"
50 #include "superio/winbond/w83697hf/w83697hf_early_serial.c"
52 #define SERIAL_DEV PNP_DEV(0x2e, W83697HF_SP1)
55 * This acpi_is_wakeup_early_via_VX800 is from Rudolf's patch on the list:
56 * http://www.coreboot.org/pipermail/coreboot/2008-January/028787.html.
58 static int acpi_is_wakeup_early_via_vx800(void)
63 print_debug("In acpi_is_wakeup_early_via_vx800\n");
64 /* Power management controller */
65 dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
66 PCI_DEVICE_ID_VIA_VX855_LPC), 0);
68 if (dev == PCI_DEV_INVALID)
69 die("Power management controller not found\n");
71 /* Set ACPI base address to I/O VX800_ACPI_IO_BASE. */
72 pci_write_config16(dev, 0x88, VX800_ACPI_IO_BASE | 0x1);
74 /* Enable ACPI accessm RTC signal gated with PSON. */
75 pci_write_config8(dev, 0x81, 0x84);
77 tmp = inw(VX800_ACPI_IO_BASE + 0x04);
78 result = ((tmp & (7 << 10)) >> 10) == 1 ? 3 : 0;
79 print_debug(" boot_mode=");
80 print_debug_hex16(result);
85 /* All content of this function came from the cx700 port of coreboot. */
86 static void enable_mainboard_devices(void)
91 * Add and close this switch, since some line cause error, some
92 * written at elsewhere (stage1 stage2).
95 dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
96 PCI_DEVICE_ID_VIA_VX855_LPC), 0);
99 pci_write_config8(dev, 0x98, 0x00);
101 pci_write_config8(dev, 0x50, 0x80); /* Disable mc97. */
104 * Martin: Disable internal KBC configuration.
106 * Internal Config is needed to decide which key can be pressed to
109 pci_write_config8(dev, 0x51, 0x2d);
111 /* This causes irq0 can not be triggerd, since bit 5 was set to 0. */
112 /* pci_write_config8(dev, 0x58, 0x42); */
114 /* These writing may... TODO */
115 regdata = pci_read_config8(dev, 0x58);
117 pci_write_config8(dev, 0x58, regdata);
118 pci_write_config8(dev, 0x59, 0x80);
119 pci_write_config8(dev, 0x5b, 0x01);
122 print_debug("In enable_mainboard_devices \n");
124 /* Enable P2P Bridge Header for external PCI bus. */
125 dev = pci_locate_device(PCI_ID(0x1106, 0xa353), 0);
126 pci_write_config8(dev, 0x4f, 0x41);
129 * "5324" already is the default value of the PCI IDE device, cancel
132 * [william 20080124]: Fix bug that can not boot Ubuntu at the
137 dev = pci_locate_device(PCI_ID(0x1106, PCI_DEVICE_ID_VIA_VX855_IDE), 0);
140 values = pci_read_config16(dev, 0xBA);
143 pci_write_config16(dev, 0xBA, values);
148 * Most content of this function came from the cx700 port of coreboot.
149 * Turn on the shadow of E-seg.
151 static void enable_shadow_ram(void)
156 * Changed the value from 0x2a to 0x3f. "read only" may block "write"?
157 * and maybe in C-seg "write" will be needed?
159 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0xff);
161 /* 0xf0000-0xfffff - ACPI tables */
162 shadowreg = pci_read_config8(PCI_DEV(0, 0, 3), 0x83);
164 pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
166 /* 0xe0000-0xeffff - elfload? */
168 * In s3 resume process, wakeup.c, I use E-seg to hold the code
169 * (which can not locate in the area to be covered) that will copy
170 * 0-A-seg and F-seg from TOP-mem back to their normal location.
172 pci_write_config8(PCI_DEV(0, 0, 3), 0x82, 0xff);
175 /* Enable shadow RAM as normal DRAM */
176 /* 0xc0000-0xcffff - VGA BIOS */
177 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0x2a);
178 pci_write_config8(PCI_DEV(0, 0, 7), 0x61, 0x00);
179 /* 0xd0000-0xdffff - ?? */
180 /* pci_write_config8(PCI_DEV(0, 0, 3), 0x81, 0xff); */
181 /* pci_write_config8(PCI_DEV(0, 0, 7), 0x62, 0xff); */
183 /* Do it again for the vlink controller. */
184 shadowreg = pci_read_config8(PCI_DEV(0, 0, 7), 0x63);
186 pci_write_config8(PCI_DEV(0, 0, 7), 0x63, shadowreg);
191 * Added this table 2008-11-28.
192 * This table contains the value needed to be set before begin to init DRAM.
193 * Note: REV_Bx should be checked for changes when porting a new board!
195 static const struct VIA_PCI_REG_INIT_TABLE mNbStage1InitTbl[] = {
196 /* VT3409 no PCI-E */
197 { 0x00, 0xFF, NB_APIC_REG(0x61), 0xFF, 0x0E }, // Set Exxxxxxx as pcie mmio config range
198 { 0x00, 0xFF, NB_APIC_REG(0x60), 0xF4, 0x0B }, // Support extended cfg address of pcie
199 // { 0x00, 0xFF, NB_APIC_REG(0x42), 0xF9, 0x02 }, // APIC Interrupt((BT_INTR)) Control
200 // Set ROMSIP value by software
203 { 0x00, 0xFF, NB_HOST_REG(0x70), 0x77, 0x33 }, // 2x Host Adr Strobe/Pad Pullup Driving = 3
204 { 0x00, 0xFF, NB_HOST_REG(0x71), 0x77, 0x33 }, // 2x Host Adr Strobe/Pad Pulldown Driving = 3
205 { 0x00, 0xFF, NB_HOST_REG(0x72), 0x77, 0x33 }, // 4x Host Dat Strobe/Pad Pullup Driving = 3
206 { 0x00, 0xFF, NB_HOST_REG(0x73), 0x77, 0x33 }, // 4x Host Dat Strobe/Pad Pulldown Driving = 3
207 { 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0x21 }, // Memory I/F timing ctrl
208 { 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0xE1 }, // Memory I/F timing ctrl
209 { 0x00, 0xFF, NB_HOST_REG(0x75), 0xFF, 0x18 }, // AGTL+ I/O Circuit
210 { 0x00, 0xFF, NB_HOST_REG(0x76), 0xFB, 0x0C }, // AGTL+ Compensation Status
211 { 0x00, 0xFF, NB_HOST_REG(0x78), 0xFF, 0x33 }, // 2X AGTL+ Auto Compensation Offset
212 { 0x00, 0xFF, NB_HOST_REG(0x79), 0xFF, 0x33 }, // 4X AGTL+ Auto Compensation Offset
213 { 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x72 }, // AGTL Compensation Status
214 { 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x77 }, // AGTL Compensation Status
215 { 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x44 }, // Input Host Address / Host Strobe Delay Control for HA Group
216 { 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x22 }, // Input Host Address / Host Strobe Delay Control for HA Group
217 { 0x00, 0xFF, NB_HOST_REG(0x7C), 0xFF, 0x00 }, // Output Delay Control of PAD for HA Group
218 { 0x00, 0xFF, NB_HOST_REG(0x7D), 0xFF, 0xAA }, // Host Address / Address Clock Output Delay Control (Only for P4 Bus)
219 { 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x10 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
220 { 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x40 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
221 { 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x10 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
222 { 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x40 }, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
223 { 0x00, 0xFF, NB_HOST_REG(0x80), 0x3F, 0x44 }, // Host Data Receiving Strobe Delay Ctrl 1
224 { 0x00, 0xFF, NB_HOST_REG(0x81), 0xFF, 0x44 }, // Host Data Receiving Strobe Delay Ctrl 2
225 { 0x00, 0xFF, NB_HOST_REG(0x82), 0xFF, 0x00 }, // Output Delay of PAD for HDSTB
226 { 0x00, 0xFF, NB_HOST_REG(0x83), 0xFF, 0x00 }, // Output Delay of PAD for HD
227 { 0x00, 0xFF, NB_HOST_REG(0x84), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 0)
228 { 0x00, 0xFF, NB_HOST_REG(0x85), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 1)
229 { 0x00, 0xFF, NB_HOST_REG(0x86), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 2)
230 { 0x00, 0xFF, NB_HOST_REG(0x87), 0xFF, 0x44 }, // Host Data / Strobe CKG Control (Group 3)
233 // CPU Host Bus Control
234 { 0x00, 0xFF, NB_HOST_REG(0x50), 0x1F, 0x08 }, // Request phase ctrl: Dynamic Defer Snoop Stall Count = 8
235 // { 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7F }, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
236 { 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7C }, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
237 { 0x00, 0xFF, NB_HOST_REG(0x52), 0xCB, 0xCB }, // CPU I/F Ctrl-2: Enable all for performance
238 // { 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x88 }, // Arbitration: Host/Master Occupancy timer = 8*4 HCLK
239 { 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x44 }, // Arbitration: Host/Master Occupancy timer = 4*4 HCLK
240 { 0x00, 0xFF, NB_HOST_REG(0x54), 0x1E, 0x1C }, // Misc Ctrl: Enable 8QW burst Mem Access
241 // { 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x06 }, // Miscellaneous Control 2
242 { 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x04 }, // Miscellaneous Control 2
243 { 0x00, 0xFF, NB_HOST_REG(0x56), 0xF7, 0x63 }, // Write Policy 1
244 // { 0x00, 0xFF, NB_HOST_REG(0x59), 0x3D, 0x01 }, // CPU Miscellaneous Control 1, enable Lowest-Priority IPL
245 // { 0x00, 0xFF, NB_HOST_REG(0x5c), 0xFF, 0x00 }, // CPU Miscellaneous Control 2
246 { 0x00, 0xFF, NB_HOST_REG(0x5D), 0xFF, 0xA2 }, // Write Policy
247 { 0x00, 0xFF, NB_HOST_REG(0x5E), 0xFF, 0x88 }, // Bandwidth Timer
248 { 0x00, 0xFF, NB_HOST_REG(0x5F), 0x46, 0x46 }, // CPU Misc Ctrl
249 // { 0x00, 0xFF, NB_HOST_REG(0x90), 0xFF, 0x0B }, // CPU Miscellaneous Control 3
250 // { 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0B }, // CPU Miscellaneous Control 2
251 { 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0A }, // CPU Miscellaneous Control 2
252 { 0x00, 0xFF, NB_HOST_REG(0x98), 0xC1, 0x41 }, // CPU Miscellaneous Control 3
253 { 0x00, 0xFF, NB_HOST_REG(0x99), 0x0E, 0x06 }, // CPU Miscellaneous Control 4
255 // Set APIC and SMRAM
256 { 0x00, 0xFF, NB_HOST_REG(0x97), 0xFF, 0x00 }, // APIC Related Control
257 { 0x00, 0xFF, NB_DRAMC_REG(0x86), 0xD6, 0x29 }, // SMM and APIC Decoding: enable APIC, MSI and SMRAM A-Seg
258 { 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } // End of the table
261 #define USE_VCP 1 /* 0 means "use DVP". */
265 #define gCom1Base 0x3f8
266 #define gCom2Base 0x2f8
269 static void EmbedComInit(void)
274 /* Enable NB multiple function control. */
275 ByteVal = pci_read_config8(PCI_DEV(0, 0, 0), 0x4f);
276 ByteVal = ByteVal | 0x01;
277 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, ByteVal);
280 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA1);
281 ByteVal = ByteVal | 0x80;
282 pci_write_config8(PCI_DEV(0, 0, 3), 0xA1, ByteVal);
284 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA7);
285 ByteVal = ByteVal | 0x08;
286 pci_write_config8(PCI_DEV(0, 0, 3), 0xA7, ByteVal);
288 /* Enable P2P IO/mem. */
289 ByteVal = pci_read_config8(PCI_DEV(0, 1, 0), 0x4);
290 ByteVal = ByteVal | 0x07;
291 pci_write_config8(PCI_DEV(0, 1, 0), 0x4, ByteVal);
293 /* Turn on graphic chip I/O port port access. */
294 ByteVal = inb(0x3C3);
295 ByteVal = ByteVal | 0x01;
296 outb(ByteVal, 0x3C3);
298 /* Turn off graphic chip register protection. */
300 ByteVal = inb(0x3C5);
301 ByteVal = ByteVal | 0x01;
302 outb(ByteVal, 0x3C5);
304 /* South module pad share enable 0x3C5.78[7]. */
306 ByteVal = inb(0x3C5);
307 ByteVal = ByteVal | 0x80;
308 outb(ByteVal, 0x3C5);
310 /* Enable UART function multiplex with DVP or VCP pad D17F0Rx46[7,6]. */
311 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0x46);
313 ByteVal = (ByteVal & 0x3F) | 0x40; /* Multiplex with VCP. */
315 ByteVal = (ByteVal & 0x3F) | 0xC0; /* Multiplex with DVP. */
316 pci_write_config8(PCI_DEV(0, 17, 0), 0x46, ByteVal);
318 /* Enable embedded COM1 and COM2 D17F0RxB0[5,4]. */
319 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xB0);
320 ByteVal = ByteVal & 0xcf;
321 /* Multiplex with VCP. */
323 ByteVal = ByteVal | 0x10;
325 ByteVal = ByteVal | 0x20;
326 pci_write_config8(PCI_DEV(0, 17, 0), 0xB0, ByteVal);
335 /* Set embedded COM1 I/O base = 0x3E8 (D17F0RB4, ByteVal = 0xFD) */
337 ByteVal = (u8) ((gCom1Base >> 3) | 0x80);
338 pci_write_config8(PCI_DEV(0, 17, 0), 0xB4, ByteVal);
339 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
340 ByteVal = (ByteVal & 0xf0) | 0x04;
341 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
344 /* Set embedded COM2 I/O base = 0x2E8 (D17F0RB5, ByteVal = 0xDD). */
346 ByteVal = (u8) ((gCom2Base >> 3) | 0x80);
347 pci_write_config8(PCI_DEV(0, 17, 0), 0xB5, ByteVal);
348 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
349 ByteVal = (ByteVal & 0x0f) | 0x30;
350 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
352 /* No port 80 biger then 0x10. */
354 /* Disable interrupt. */
355 ByteVal = inb(ComBase + 3);
356 outb(ByteVal & 0x7F, ComBase + 3);
357 outb(0x00, ComBase + 1);
360 ByteVal = inb(ComBase + 3);
361 outb(ByteVal | 0x80, ComBase + 3);
363 outb(0x00, ComBase + 1);
365 /* Set frame format. */
366 ByteVal = inb(ComBase + 3);
367 outb(ByteVal & 0x3F, ComBase + 3);
368 outb(0x03, ComBase + 3);
369 outb(0x00, ComBase + 2);
370 outb(0x00, ComBase + 4);
372 /* SOutput("Embedded COM output\n"); */
377 /* cache_as_ram.inc jumps to here. */
378 void main(unsigned long bist)
381 u8 rambits, Data8, Data;
386 * Enable multifunction for northbridge. These 4 lines (until
387 * console_init()) are the same with epia-cn port.
389 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, 0x01);
390 /* EmbedComInit(); */
391 w83697hf_set_clksel_48(SERIAL_DEV);
392 w83697hf_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
394 /* enable_vx800_serial(); */
414 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBA,
415 PCI_DEVICE_ID_VIA_VX855_IDE);
416 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBE,
417 PCI_DEVICE_ID_VIA_VX855_IDE);
418 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA0, PCI_VENDOR_ID_VIA);
419 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA2,
420 PCI_DEVICE_ID_VIA_VX855_LPC);
421 Data8 = pci_read_config8(PCI_DEV(0, 0x11, 0), 0x79);
424 pci_write_config8(PCI_DEV(0, 0x11, 0), 0x79, Data8);
425 pci_write_config16(PCI_DEV(0, 0x11, 0), 0x72,
426 PCI_DEVICE_ID_VIA_VX855_LPC);
429 * There are two function definitions of console_init(), while the
430 * src/arch/i386/lib is the right one.
434 /* Decide if this is a s3 wakeup or a normal boot. */
435 boot_mode = acpi_is_wakeup_early_via_vx800();
438 * 2008-11-27 Add this, to transfer "cpu restart" to "cold boot".
439 * When this boot is not a S3 resume, and PCI registers had been
440 * written, then this must be a CPU restart (result of OS reboot cmd),
441 * so we need a real "cold boot".
444 && (pci_read_config8(PCI_DEV(0, 0, 3), 0x80) != 0)) {
448 /* x86 cold boot I/O cmd. */
449 /* These 2 lines are the same with epia-cn port. */
452 /* This fix does help vx800!, but vx855 doesn't need this. */
453 /* smbus_fixup(&ctrl); */
457 * CAR needs MTRR until memory is ok, so disable this
458 * early_mtrr_init() call.
461 print_debug("doing early_mtrr\n");
466 /* Halt if there was a built-in self test failure. */
467 report_bist_failure(bist);
469 print_debug("Enabling mainboard devices\n");
470 enable_mainboard_devices();
473 * Get NB chip revision from D0F4RxF6, revision will be used in
476 device = PCI_DEV(0, 0, 4);
477 Data = pci_read_config8(device, 0xf6);
478 print_debug("NB chip revision =");
479 print_debug_hex8(Data);
482 /* Make NB ready before DRAM init. */
483 via_pci_inittable(Data, mNbStage1InitTbl);
486 * When resume from s3, DRAM init is skipped, so need to recovery
487 * any PCI register related to DRAM init. d0f3 didn't lose its power
488 * during whole s3 time, so any register not belonging to d0f3 needs
492 if (boot_mode == 3) {
494 u8 ramregs[] = { 0x43, 0x42, 0x41, 0x40 };
495 DRAM_SYS_ATTR DramAttr;
497 print_debug("This is an S3 wakeup\n");
499 memset(&DramAttr, 0, sizeof(DRAM_SYS_ATTR));
501 * Step 1: DRAM detection; DDR1 or DDR2; Get SPD Data;
502 * Rank Presence; 64 or 128bit; Unbuffered or registered;
505 DRAMDetect(&DramAttr);
508 * Begin to get RAM size, 43,42 41 40 contains the end
509 * address of last rank in DDR2 slot.
511 device = PCI_DEV(0, 0, 3);
512 for (rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) {
513 rambits = pci_read_config8(device, ramregs[i]);
518 DRAMDRDYSetting(&DramAttr);
520 Data = 0x80; /* This value is same with DevInit.c. */
521 pci_write_config8(PCI_DEV(0, 0, 4), 0xa3, Data);
522 pci_write_config8(PCI_DEV(0, 17, 7), 0x60, rambits << 2);
523 Data = pci_read_config8(MEMCTRL, 0x88);
524 pci_write_config8(PCI_DEV(0, 17, 7), 0xE5, Data);
526 /* Just copy this function from draminit to here! */
527 DRAMRegFinalValue(&DramAttr);
529 /* Just copy this function from draminit to here! */
532 print_debug("Resume from S3, RAM init was ignored\n");
535 ram_check(0, 640 * 1024);
539 /* ddr2_ram_setup(); */
540 /* This line is the same with cx700 port. */
544 * For coreboot most time of S3 resume is the same as normal boot,
545 * so some memory area under 1M become dirty, so before this happen,
546 * I need to backup the content of mem to top-mem.
548 * I will reserve the 1M top-men in LBIO table in coreboot_table.c
549 * and recovery the content of 1M-mem in wakeup.c.
551 #if PAYLOAD_IS_SEABIOS == 1
552 if (boot_mode == 3) {
553 /* An idea of Libo.Feng at amd.com in http://www.coreboot.org/pipermail/coreboot/2008-December/043111.html
555 * I want move the 1M data, I have to set some MTRRs myself.
556 * Setting MTRR before back memory save s3 resume time about
559 * !!! Since CAR stack uses cache, and we are using cache
560 * here, we must be careful:
562 * 1. during this MTRR code, must no function call (after
563 * this MTRR, I think it should be OK to use function).
564 * 2. Before stack switch, no use variable that have value
566 * 3. Due to 2, take care of "cpu_reset", I directlly set it
569 u32 memtop = *(u32 *) WAKE_MEM_INFO;
570 u32 memtop1 = *(u32 *) WAKE_MEM_INFO - 0x100000;
571 u32 memtop2 = *(u32 *) WAKE_MEM_INFO - 0x200000;
572 u32 memtop3 = *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000;
574 *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000 + 0xe0000;
577 "movl $0x204, %%ecx\n\t"
578 "xorl %%edx, %%edx\n\t"
580 "orl $(0 | 6), %%eax\n\t"
583 "movl $0x205, %%ecx\n\t"
584 "xorl %%edx, %%edx\n\t"
585 "movl $0x100000,%%eax\n\t"
588 "orl $(0 | 0x800), %%eax\n\t"
594 "movl $0x206, %%ecx\n\t"
595 "xorl %%edx, %%edx\n\t"
597 "orl $(0 | 6), %%eax\n\t"
600 "movl $0x207, %%ecx\n\t"
601 "xorl %%edx, %%edx\n\t"
602 "movl $0x100000,%%eax\n\t"
605 "orl $(0 | 0x800), %%eax\n\t"
611 "movl $0x208, %ecx\n\t"
612 "xorl %edx, %edx\n\t"
614 "orl $(0 | 6), %eax\n\t"
617 "movl $0x209, %ecx\n\t"
618 "xorl %edx, %edx\n\t"
619 "movl $0x100000,%eax\n\t"
622 "orl $(0 | 0x800), %eax\n\t"
628 * WAKE_MEM_INFO is inited in get_set_top_available_mem()
629 * in tables.c these two memcpy() not not be enabled if set
630 * the MTRR around this two lines.
636 "movl $0xa0000, %%ecx\n\t"
643 "movl $0xe0000, %%esi\n\t"
645 "movl $0x20000, %%ecx\n\t"
651 /* This can have function call, because no variable used before this. */
652 print_debug("Copy memory to high memory to protect s3 wakeup vector code \n");
653 memcpy((unsigned char *)((*(u32 *) WAKE_MEM_INFO) - 64 * 1024 -
654 0x100000), (unsigned char *)0, 0xa0000);
655 memcpy((unsigned char *)((*(u32 *) WAKE_MEM_INFO) - 64 * 1024 -
656 0x100000 + 0xe0000), (unsigned char *)0xe0000, 0x20000);
658 /* Restore the MTRR previously modified. */
662 "xorl %edx, %edx\n\t"
663 "xorl %eax, %eax\n\t"
664 "movl $0x204, %ecx\n\t"
666 "movl $0x205, %ecx\n\t"
668 "movl $0x206, %ecx\n\t"
670 "movl $0x207, %ecx\n\t"
672 "movl $0x208, %ecx\n\t"
674 "movl $0x209, %ecx\n\t"