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.
27 #define RAMINIT_SYSINFO 1
28 #define CACHE_AS_RAM_ADDRESS_DEBUG 0
31 #include <device/pci_def.h>
32 #include <device/pci_ids.h>
34 #include <device/pnp_def.h>
35 #include <arch/romcc_io.h>
37 #include "pc80/serial.c"
38 #include "arch/i386/lib/console.c"
39 #include "lib/ramtest.c"
40 #include "northbridge/via/vx800/vx800.h"
41 #include "cpu/x86/mtrr/earlymtrr.c"
42 #include "cpu/x86/bist.h"
43 #include "pc80/udelay_io.c"
44 #include "lib/delay.c"
45 #if CONFIG_USE_INIT == 0
48 #include "cpu/x86/lapic/boot_cpu.c"
50 /* This file contains the board-special SI value for raminit.c. */
51 #include "driving_clk_phase_data.c"
53 #include "northbridge/via/vx800/raminit.h"
54 #include "northbridge/via/vx800/raminit.c"
55 #include "cpu/x86/car/copy_and_run.c"
58 #include "superio/winbond/w83697hf/w83697hf_early_serial.c"
60 #define SERIAL_DEV PNP_DEV(0x2e, W83697HF_SP1)
63 * This acpi_is_wakeup_early_via_VX800 is from Rudolf's patch on the list:
64 * http://www.coreboot.org/pipermail/coreboot/2008-January/028787.html.
66 void jason_tsc_count_car(void)
69 unsigned long long start;
70 asm volatile ("rdtsc" : "=A" (start));
72 print_emerg("jason_tsc_count_car= ");
73 print_emerg_hex32((unsigned long) start);
78 int acpi_is_wakeup_early_via_vx800(void)
83 print_debug("In acpi_is_wakeup_early_via_vx800\r\n");
84 /* Power management controller */
85 dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
86 PCI_DEVICE_ID_VIA_VX855_LPC), 0);
88 if (dev == PCI_DEV_INVALID)
89 die("Power management controller not found\r\n");
91 /* Set ACPI base address to I/O VX800_ACPI_IO_BASE. */
92 pci_write_config16(dev, 0x88, VX800_ACPI_IO_BASE | 0x1);
94 /* Enable ACPI accessm RTC signal gated with PSON. */
95 pci_write_config8(dev, 0x81, 0x84);
97 tmp = inw(VX800_ACPI_IO_BASE + 0x04);
98 result = ((tmp & (7 << 10)) >> 10) == 1 ? 3 : 0;
99 print_debug(" boot_mode=");
100 print_debug_hex16(result);
105 static inline int spd_read_byte(unsigned device, unsigned address)
107 return smbus_read_byte(device, address);
110 /* All content of this function came from the cx700 port of coreboot. */
111 static void enable_mainboard_devices(void)
118 * Add and close this switch, since some line cause error, some
119 * written at elsewhere (stage1 stage2).
122 dev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA,
123 PCI_DEVICE_ID_VIA_VX855_LPC), 0);
126 pci_write_config8(dev, 0x98, 0x00);
128 pci_write_config8(dev, 0x50, 0x80); /* Disable mc97. */
131 * Martin: Disable internal KBC configuration.
133 * Internal Config is needed to decide which key can be pressed to
136 pci_write_config8(dev, 0x51, 0x2d);
138 /* This causes irq0 can not be triggerd, since bit 5 was set to 0. */
139 /* pci_write_config8(dev, 0x58, 0x42); */
141 /* These writing may... TODO */
142 regdata = pci_read_config8(dev, 0x58);
144 pci_write_config8(dev, 0x58, regdata);
145 pci_write_config8(dev, 0x59, 0x80);
146 pci_write_config8(dev, 0x5b, 0x01);
149 print_debug("In enable_mainboard_devices \r\n");
151 /* Enable P2P Bridge Header for external PCI bus. */
152 dev = pci_locate_device(PCI_ID(0x1106, 0xa353), 0);
153 pci_write_config8(dev, 0x4f, 0x41);
156 * "5324" already is the default value of the PCI IDE device, cancel
159 * [william 20080124]: Fix bug that can not boot Ubuntu at the
164 dev = pci_locate_device(PCI_ID(0x1106, PCI_DEVICE_ID_VIA_VX855_IDE), 0);
165 values = pci_read_config16(dev, 0xBA);
168 pci_write_config16(dev, 0xBA, values);
173 * Most content of this function came from the cx700 port of coreboot.
174 * Turn on the shadow of E-seg.
176 static void enable_shadow_ram(void)
181 * Changed the value from 0x2a to 0x3f. "read only" may block "write"?
182 * and maybe in C-seg "write" will be needed?
184 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0xff);
186 /* 0xf0000-0xfffff - ACPI tables */
187 shadowreg = pci_read_config8(PCI_DEV(0, 0, 3), 0x83);
189 pci_write_config8(PCI_DEV(0, 0, 3), 0x83, shadowreg);
191 /* 0xe0000-0xeffff - elfload? */
193 * In s3 resume process, wakeup.c, I use E-seg to hold the code
194 * (which can not locate in the area to be covered) that will copy
195 * 0-A-seg and F-seg from TOP-mem back to their normal location.
197 pci_write_config8(PCI_DEV(0, 0, 3), 0x82, 0xff);
200 /* Enable shadow RAM as normal DRAM */
201 /* 0xc0000-0xcffff - VGA BIOS */
202 pci_write_config8(PCI_DEV(0, 0, 3), 0x80, 0x2a);
203 pci_write_config8(PCI_DEV(0, 0, 7), 0x61, 0x00);
204 /* 0xd0000-0xdffff - ?? */
205 /* pci_write_config8(PCI_DEV(0, 0, 3), 0x81, 0xff); */
206 /* pci_write_config8(PCI_DEV(0, 0, 7), 0x62, 0xff); */
208 /* Do it again for the vlink controller. */
209 shadowreg = pci_read_config8(PCI_DEV(0, 0, 7), 0x63);
211 pci_write_config8(PCI_DEV(0, 0, 7), 0x63, shadowreg);
216 * Added this table 2008-11-28.
217 * This table contains the value needed to be set before begin to init DRAM.
218 * Note: REV_Bx should be checked for changes when porting a new board!
220 static const struct VIA_PCI_REG_INIT_TABLE mNbStage1InitTbl[] = {
221 /* VT3409 no PCI-E */
222 0x00, 0xFF, NB_APIC_REG(0x61), 0xFF, 0x0E, // Set Exxxxxxx as pcie mmio config range
223 0x00, 0xFF, NB_APIC_REG(0x60), 0xF4, 0x0B, // Support extended cfg address of pcie
224 // 0x00, 0xFF, NB_APIC_REG(0x42), 0xF9, 0x02, // APIC Interrupt((BT_INTR)) Control
225 // Set ROMSIP value by software
228 0x00, 0xFF, NB_HOST_REG(0x70), 0x77, 0x33, // 2x Host Adr Strobe/Pad Pullup Driving = 3
229 0x00, 0xFF, NB_HOST_REG(0x71), 0x77, 0x33, // 2x Host Adr Strobe/Pad Pulldown Driving = 3
230 0x00, 0xFF, NB_HOST_REG(0x72), 0x77, 0x33, // 4x Host Dat Strobe/Pad Pullup Driving = 3
231 0x00, 0xFF, NB_HOST_REG(0x73), 0x77, 0x33, // 4x Host Dat Strobe/Pad Pulldown Driving = 3
232 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0x21, // Memory I/F timing ctrl
233 0x00, 0xFF, NB_HOST_REG(0x74), 0xFF, 0xE1, // Memory I/F timing ctrl
234 0x00, 0xFF, NB_HOST_REG(0x75), 0xFF, 0x18, // AGTL+ I/O Circuit
235 0x00, 0xFF, NB_HOST_REG(0x76), 0xFB, 0x0C, // AGTL+ Compensation Status
236 0x00, 0xFF, NB_HOST_REG(0x78), 0xFF, 0x33, // 2X AGTL+ Auto Compensation Offset
237 0x00, 0xFF, NB_HOST_REG(0x79), 0xFF, 0x33, // 4X AGTL+ Auto Compensation Offset
238 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x72, // AGTL Compensation Status
239 0x00, 0xFF, NB_HOST_REG(0x7A), 0x3F, 0x77, // AGTL Compensation Status
240 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x44, // Input Host Address / Host Strobe Delay Control for HA Group
241 0x00, 0xFF, NB_HOST_REG(0x7B), 0xFF, 0x22, // Input Host Address / Host Strobe Delay Control for HA Group
242 0x00, 0xFF, NB_HOST_REG(0x7C), 0xFF, 0x00, // Output Delay Control of PAD for HA Group
243 0x00, 0xFF, NB_HOST_REG(0x7D), 0xFF, 0xAA, // Host Address / Address Clock Output Delay Control (Only for P4 Bus)
244 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x10, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
245 0x00, 0xFF, NB_HOST_REG(0x7E), 0xFF, 0x40, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
246 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x10, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
247 0x00, 0xFF, NB_HOST_REG(0x7F), 0xFF, 0x40, // Host Address CKG Rising / Falling Time Control (Only for P4 Bus)
248 0x00, 0xFF, NB_HOST_REG(0x80), 0x3F, 0x44, // Host Data Receiving Strobe Delay Ctrl 1
249 0x00, 0xFF, NB_HOST_REG(0x81), 0xFF, 0x44, // Host Data Receiving Strobe Delay Ctrl 2
250 0x00, 0xFF, NB_HOST_REG(0x82), 0xFF, 0x00, // Output Delay of PAD for HDSTB
251 0x00, 0xFF, NB_HOST_REG(0x83), 0xFF, 0x00, // Output Delay of PAD for HD
252 0x00, 0xFF, NB_HOST_REG(0x84), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 0)
253 0x00, 0xFF, NB_HOST_REG(0x85), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 1)
254 0x00, 0xFF, NB_HOST_REG(0x86), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 2)
255 0x00, 0xFF, NB_HOST_REG(0x87), 0xFF, 0x44, // Host Data / Strobe CKG Control (Group 3)
258 // CPU Host Bus Control
259 0x00, 0xFF, NB_HOST_REG(0x50), 0x1F, 0x08, // Request phase ctrl: Dynamic Defer Snoop Stall Count = 8
260 // 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7F, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
261 0x00, 0xFF, NB_HOST_REG(0x51), 0xFF, 0x7C, // CPU I/F Ctrl-1: Disable Fast DRDY and RAW
262 0x00, 0xFF, NB_HOST_REG(0x52), 0xCB, 0xCB, // CPU I/F Ctrl-2: Enable all for performance
263 // 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x88, // Arbitration: Host/Master Occupancy timer = 8*4 HCLK
264 0x00, 0xFF, NB_HOST_REG(0x53), 0xFF, 0x44, // Arbitration: Host/Master Occupancy timer = 4*4 HCLK
265 0x00, 0xFF, NB_HOST_REG(0x54), 0x1E, 0x1C, // Misc Ctrl: Enable 8QW burst Mem Access
266 // 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x06, // Miscellaneous Control 2
267 0x00, 0xFF, NB_HOST_REG(0x55), 0x06, 0x04, // Miscellaneous Control 2
268 0x00, 0xFF, NB_HOST_REG(0x56), 0xF7, 0x63, // Write Policy 1
269 // 0x00, 0xFF, NB_HOST_REG(0x59), 0x3D, 0x01, // CPU Miscellaneous Control 1, enable Lowest-Priority IPL
270 // 0x00, 0xFF, NB_HOST_REG(0x5c), 0xFF, 0x00, // CPU Miscellaneous Control 2
271 0x00, 0xFF, NB_HOST_REG(0x5D), 0xFF, 0xA2, // Write Policy
272 0x00, 0xFF, NB_HOST_REG(0x5E), 0xFF, 0x88, // Bandwidth Timer
273 0x00, 0xFF, NB_HOST_REG(0x5F), 0x46, 0x46, // CPU Misc Ctrl
274 // 0x00, 0xFF, NB_HOST_REG(0x90), 0xFF, 0x0B, // CPU Miscellaneous Control 3
275 // 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0B, // CPU Miscellaneous Control 2
276 0x00, 0xFF, NB_HOST_REG(0x96), 0x0B, 0x0A, // CPU Miscellaneous Control 2
277 0x00, 0xFF, NB_HOST_REG(0x98), 0xC1, 0x41, // CPU Miscellaneous Control 3
278 0x00, 0xFF, NB_HOST_REG(0x99), 0x0E, 0x06, // CPU Miscellaneous Control 4
280 // Set APIC and SMRAM
281 0x00, 0xFF, NB_HOST_REG(0x97), 0xFF, 0x00, // APIC Related Control
282 0x00, 0xFF, NB_DRAMC_REG(0x86), 0xD6, 0x29, // SMM and APIC Decoding: enable APIC, MSI and SMRAM A-Seg
283 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // End of the table
286 #define USE_VCP 1 /* 0 means "use DVP". */
290 #define gCom1Base 0x3f8
291 #define gCom2Base 0x2f8
293 void EmbedComInit(void)
298 /* Enable NB multiple function control. */
299 ByteVal = pci_read_config8(PCI_DEV(0, 0, 0), 0x4f);
300 ByteVal = ByteVal | 0x01;
301 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, ByteVal);
304 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA1);
305 ByteVal = ByteVal | 0x80;
306 pci_write_config8(PCI_DEV(0, 0, 3), 0xA1, ByteVal);
308 ByteVal = pci_read_config8(PCI_DEV(0, 0, 3), 0xA7);
309 ByteVal = ByteVal | 0x08;
310 pci_write_config8(PCI_DEV(0, 0, 3), 0xA7, ByteVal);
312 /* Enable P2P IO/mem. */
313 ByteVal = pci_read_config8(PCI_DEV(0, 1, 0), 0x4);
314 ByteVal = ByteVal | 0x07;
315 pci_write_config8(PCI_DEV(0, 1, 0), 0x4, ByteVal);
317 /* Turn on graphic chip I/O port port access. */
318 ByteVal = inb(0x3C3);
319 ByteVal = ByteVal | 0x01;
320 outb(ByteVal, 0x3C3);
322 /* Turn off graphic chip register protection. */
324 ByteVal = inb(0x3C5);
325 ByteVal = ByteVal | 0x01;
326 outb(ByteVal, 0x3C5);
328 /* South module pad share enable 0x3C5.78[7]. */
330 ByteVal = inb(0x3C5);
331 ByteVal = ByteVal | 0x80;
332 outb(ByteVal, 0x3C5);
334 /* Enable UART function multiplex with DVP or VCP pad D17F0Rx46[7,6]. */
335 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0x46);
337 ByteVal = (ByteVal & 0x3F) | 0x40; /* Multiplex with VCP. */
339 ByteVal = (ByteVal & 0x3F) | 0xC0; /* Multiplex with DVP. */
340 pci_write_config8(PCI_DEV(0, 17, 0), 0x46, ByteVal);
342 /* Enable embedded COM1 and COM2 D17F0RxB0[5,4]. */
343 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xB0);
344 ByteVal = ByteVal & 0xcf;
345 /* Multiplex with VCP. */
347 ByteVal = ByteVal | 0x10;
349 ByteVal = ByteVal | 0x20;
350 pci_write_config8(PCI_DEV(0, 17, 0), 0xB0, ByteVal);
359 /* Set embedded COM1 I/O base = 0x3E8 (D17F0RB4, ByteVal = 0xFD) */
361 ByteVal = (u8) ((gCom1Base >> 3) | 0x80);
362 pci_write_config8(PCI_DEV(0, 17, 0), 0xB4, ByteVal);
363 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
364 ByteVal = (ByteVal & 0xf0) | 0x04;
365 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
368 /* Set embedded COM2 I/O base = 0x2E8 (D17F0RB5, ByteVal = 0xDD). */
370 ByteVal = (u8) ((gCom2Base >> 3) | 0x80);
371 pci_write_config8(PCI_DEV(0, 17, 0), 0xB5, ByteVal);
372 ByteVal = pci_read_config8(PCI_DEV(0, 17, 0), 0xb2);
373 ByteVal = (ByteVal & 0x0f) | 0x30;
374 pci_write_config8(PCI_DEV(0, 17, 0), 0xB2, ByteVal);
376 /* No port 80 biger then 0x10. */
378 /* Disable interrupt. */
379 ByteVal = inb(ComBase + 3);
380 outb(ByteVal & 0x7F, ComBase + 3);
381 outb(0x00, ComBase + 1);
384 ByteVal = inb(ComBase + 3);
385 outb(ByteVal | 0x80, ComBase + 3);
387 outb(0x00, ComBase + 1);
389 /* Set frame format. */
390 ByteVal = inb(ComBase + 3);
391 outb(ByteVal & 0x3F, ComBase + 3);
392 outb(0x03, ComBase + 3);
393 outb(0x00, ComBase + 2);
394 outb(0x00, ComBase + 4);
396 /* SOutput("Embedded COM output\n"); */
400 /* cache_as_ram.inc jumps to here. */
401 void amd64_main(unsigned long bist)
403 unsigned cpu_reset = 0;
405 u8 rambits, Data8, Data;
410 * Enable multifunction for northbridge. These 4 lines (until
411 * console_init()) are the same with epia-cn port.
413 pci_write_config8(PCI_DEV(0, 0, 0), 0x4f, 0x01);
414 /* EmbedComInit(); */
415 w83697hf_set_clksel_48(SERIAL_DEV);
416 w83697hf_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
418 /* enable_vx800_serial(); */
438 jason_tsc_count_car();
440 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBA,
441 PCI_DEVICE_ID_VIA_VX855_IDE);
442 pci_write_config16(PCI_DEV(0, 0xf, 0), 0xBE,
443 PCI_DEVICE_ID_VIA_VX855_IDE);
444 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA0, PCI_VENDOR_ID_VIA);
445 pci_write_config16(PCI_DEV(0, 0x11, 0), 0xA2,
446 PCI_DEVICE_ID_VIA_VX855_LPC);
447 Data8 = pci_read_config8(PCI_DEV(0, 0x11, 0), 0x79);
450 pci_write_config8(PCI_DEV(0, 0x11, 0), 0x79, Data8);
451 pci_write_config16(PCI_DEV(0, 0x11, 0), 0x72,
452 PCI_DEVICE_ID_VIA_VX855_LPC);
455 * There are two function definitions of console_init(), while the
456 * src/arch/i386/lib is the right one.
460 /* Decide if this is a s3 wakeup or a normal boot. */
461 boot_mode = acpi_is_wakeup_early_via_vx800();
464 * 2008-11-27 Add this, to transfer "cpu restart" to "cold boot".
465 * When this boot is not a S3 resume, and PCI registers had been
466 * written, then this must be a CPU restart (result of OS reboot cmd),
467 * so we need a real "cold boot".
469 jason_tsc_count_car();
471 && (pci_read_config8(PCI_DEV(0, 0, 3), 0x80) != 0)) {
475 /* x86 cold boot I/O cmd. */
476 /* These 2 lines are the same with epia-cn port. */
478 jason_tsc_count_car();
480 /* This fix does help vx800!, but vx855 doesn't need this. */
481 /* smbus_fixup(&ctrl); */
485 * CAR needs MTRR until memory is ok, so disable this
486 * early_mtrr_init() call.
489 print_debug("doing early_mtrr\r\n");
494 /* Halt if there was a built-in self test failure. */
495 report_bist_failure(bist);
497 print_debug("Enabling mainboard devices\r\n");
498 enable_mainboard_devices();
501 * Get NB chip revision from D0F4RxF6, revision will be used in
504 device = PCI_DEV(0, 0, 4);
505 Data = pci_read_config8(device, 0xf6);
506 print_debug("NB chip revision =");
507 print_debug_hex8(Data);
510 /* Make NB ready before DRAM init. */
511 via_pci_inittable(Data, mNbStage1InitTbl);
514 * When resume from s3, DRAM init is skipped, so need to recovery
515 * any PCI register related to DRAM init. d0f3 didn't lose its power
516 * during whole s3 time, so any register not belonging to d0f3 needs
520 if (boot_mode == 3) {
522 u8 ramregs[] = { 0x43, 0x42, 0x41, 0x40 };
523 DRAM_SYS_ATTR DramAttr;
525 print_debug("This is an S3 wakeup\r\n");
527 memset(&DramAttr, 0, sizeof(DRAM_SYS_ATTR));
529 * Step 1: DRAM detection; DDR1 or DDR2; Get SPD Data;
530 * Rank Presence; 64 or 128bit; Unbuffered or registered;
533 DRAMDetect(&DramAttr);
536 * Begin to get RAM size, 43,42 41 40 contains the end
537 * address of last rank in DDR2 slot.
539 device = PCI_DEV(0, 0, 3);
540 for (rambits = 0, i = 0; i < ARRAY_SIZE(ramregs); i++) {
541 rambits = pci_read_config8(device, ramregs[i]);
546 DRAMDRDYSetting(&DramAttr);
548 Data = 0x80; /* This value is same with DevInit.c. */
549 pci_write_config8(PCI_DEV(0, 0, 4), 0xa3, Data);
550 pci_write_config8(PCI_DEV(0, 17, 7), 0x60, rambits << 2);
551 Data = pci_read_config8(MEMCTRL, 0x88);
552 pci_write_config8(PCI_DEV(0, 17, 7), 0xE5, Data);
554 /* Just copy this function from draminit to here! */
555 DRAMRegFinalValue(&DramAttr);
557 /* Just copy this function from draminit to here! */
560 print_debug("Resume from S3, RAM init was ignored\r\n");
563 ram_check(0, 640 * 1024);
567 /* ddr2_ram_setup(); */
568 /* This line is the same with cx700 port. */
571 jason_tsc_count_car();
574 * For coreboot most time of S3 resume is the same as normal boot,
575 * so some memory area under 1M become dirty, so before this happen,
576 * I need to backup the content of mem to top-mem.
578 * I will reserve the 1M top-men in LBIO table in coreboot_table.c
579 * and recovery the content of 1M-mem in wakeup.c.
581 #if PAYLOAD_IS_SEABIOS == 1
582 if (boot_mode == 3) {
583 /* An idea of Libo.Feng at amd.com in http://www.coreboot.org/pipermail/coreboot/2008-December/043111.html
585 * I want move the 1M data, I have to set some MTRRs myself.
586 * Setting MTRR before back memory save s3 resume time about
589 * !!! Since CAR stack uses cache, and we are using cache
590 * here, we must be careful:
592 * 1. during this MTRR code, must no function call (after
593 * this MTRR, I think it should be OK to use function).
594 * 2. Before stack switch, no use variable that have value
596 * 3. Due to 2, take care of "cpu_reset", I directlly set it
599 u32 memtop = *(u32 *) WAKE_MEM_INFO;
600 u32 memtop1 = *(u32 *) WAKE_MEM_INFO - 0x100000;
601 u32 memtop2 = *(u32 *) WAKE_MEM_INFO - 0x200000;
602 u32 memtop3 = *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000;
604 *(u32 *) WAKE_MEM_INFO - 64 * 1024 - 0x100000 + 0xe0000;
607 "movl $0x204, %%ecx\n\t"
608 "xorl %%edx, %%edx\n\t"
610 "orl $(0 | 6), %%eax\n\t"
613 "movl $0x205, %%ecx\n\t"
614 "xorl %%edx, %%edx\n\t"
615 "movl $0x100000,%%eax\n\t"
618 "orl $(0 | 0x800), %%eax\n\t"
624 "movl $0x206, %%ecx\n\t"
625 "xorl %%edx, %%edx\n\t"
627 "orl $(0 | 6), %%eax\n\t"
630 "movl $0x207, %%ecx\n\t"
631 "xorl %%edx, %%edx\n\t"
632 "movl $0x100000,%%eax\n\t"
635 "orl $(0 | 0x800), %%eax\n\t"
641 "movl $0x208, %ecx\n\t"
642 "xorl %edx, %edx\n\t"
644 "orl $(0 | 6), %eax\n\t"
647 "movl $0x209, %ecx\n\t"
648 "xorl %edx, %edx\n\t"
649 "movl $0x100000,%eax\n\t"
652 "orl $(0 | 0x800), %eax\n\t"
658 * WAKE_MEM_INFO is inited in get_set_top_available_mem()
659 * in tables.c these two memcpy() not not be enabled if set
660 * the MTRR around this two lines.
666 "movl $0xa0000, %%ecx\n\t"
673 "movl $0xe0000, %%esi\n\t"
675 "movl $0x20000, %%ecx\n\t"
681 /* This can have function call, because no variable used before this. */
682 print_debug("Copy memory to high memory to protect s3 wakeup vector code \r\n");
683 memcpy((unsigned char *)((*(u32 *) WAKE_MEM_INFO) - 64 * 1024 -
684 0x100000), (unsigned char *)0, 0xa0000);
685 memcpy((unsigned char *)((*(u32 *) WAKE_MEM_INFO) - 64 * 1024 -
686 0x100000 + 0xe0000), (unsigned char *)0xe0000, 0x20000);
688 /* Restore the MTRR previously modified. */
692 "xorl %edx, %edx\n\t"
693 "xorl %eax, %eax\n\t"
694 "movl $0x204, %ecx\n\t"
696 "movl $0x205, %ecx\n\t"
698 "movl $0x206, %ecx\n\t"
700 "movl $0x207, %ecx\n\t"
702 "movl $0x208, %ecx\n\t"
704 "movl $0x209, %ecx\n\t"
713 * The following code is copied from tyan\s2735\cache_as_ram_auto.c.
714 * Only the code around CLEAR_FIRST_1M_RAM is changed. Removed all the code
715 * around CLEAR_FIRST_1M_RAM and #include "cpu/x86/car/cache_as_ram_post.c".
716 * The CLEAR_FIRST_1M_RAM seems to make cpu/x86/car/cache_as_ram_post.c stop
717 * at somewhere, and cpu/x86/car/cache_as_ram_post.c do not cache my
718 * $CONFIG_XIP_ROM_BASE+SIZE area.
720 * Use #include "cpu/via/car/cache_as_ram_post.c". This version post.c have
721 * some diff with x86-version.
726 * Check value of esp to verify if we have enough ROM for
727 * stack in Cache as RAM.
730 __asm__ volatile ("movl %%esp, %0\n\t":"=a" (v_esp));
732 printk_debug("v_esp=%08x\r\n", v_esp);
734 print_debug("v_esp=");
735 print_debug_hex32(v_esp);
744 /* It seems that cpu_reset is not used before this, so I just reset
745 * it, (this is because the s3 resume, setting in MTRR and copy data
751 printk_debug("cpu_reset = %08x\r\n", cpu_reset);
753 print_debug("cpu_reset = ");
754 print_debug_hex32(cpu_reset);
759 print_debug("Clearing initial memory region: ");
760 print_debug("No cache as ram now - ");
762 /* Store cpu_reset to ebx. */
763 __asm__ volatile ("movl %0, %%ebx\n\t"::"a" (cpu_reset));
766 * Cancel these lines, CLEAR_FIRST_1M_RAM cause the
767 * cpu/x86/car/cache_as_ram_post.c stop at somewhere.
770 if (cpu_reset == 0) {
771 #define CLEAR_FIRST_1M_RAM 1
772 #include "cpu/via/car/cache_as_ram_post.c"
774 #undef CLEAR_FIRST_1M_RAM
775 #include "cpu/via/car/cache_as_ram_post.c"
779 #include "cpu/via/car/cache_as_ram_post.c"
780 /* #include "cpu/x86/car/cache_as_ram_post.c" */
782 /* Set new esp *//* before CONFIG_RAMBASE */
784 "subl %0, %%esp\n\t"::
785 "a" ((CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE) - CONFIG_RAMBASE)
789 unsigned new_cpu_reset;
791 /* Get back cpu_reset from ebx. */
792 __asm__ volatile ("movl %%ebx, %0\n\t":"=a" (new_cpu_reset));
794 /* We can't go back anymore, we lost old stack data in CAR. */
795 if (new_cpu_reset == 0)
796 print_debug("Use Ram as Stack now - done\r\n");
798 print_debug("Use Ram as Stack now - \r\n");
801 printk_debug("new_cpu_reset = %08x\r\n", new_cpu_reset);
803 print_debug("new_cpu_reset = ");
804 print_debug_hex32(new_cpu_reset);
808 jason_tsc_count_car();
809 /* Copy and execute coreboot_ram. */
810 copy_and_run(new_cpu_reset);
811 /* We will not return. */
815 print_debug("should not be here -\r\n");