2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2009 coresystems GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; version 2 of
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,
25 #include <arch/romcc_io.h>
26 #include <device/pci_def.h>
27 #include <device/pnp_def.h>
28 #include <cpu/x86/lapic.h>
30 #include <pc80/mc146818rtc.h>
32 #include <console/console.h>
33 #include <cpu/x86/bist.h>
36 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
37 #include "pc80/usbdebug_serial.c"
40 #include "lib/ramtest.c"
41 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
43 #include "northbridge/intel/i945/udelay.c"
45 #include "southbridge/intel/i82801gx/i82801gx.h"
46 static void setup_ich7_gpios(void)
50 printk(BIOS_DEBUG, " GPIOS...");
51 /* General Registers */
52 outl(0x1f28f7c2, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
53 outl(0xe0e809c3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
54 // Power On value is eede1fbf, we set: (TODO explain why)
64 // We should probably do this explicitly bitwise, see below.
65 outl(0xeee83f83, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
66 /* Output Control Registers */
67 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
68 /* Input Control Registers */
69 outl(0x00000180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
70 outl(0x000000e6, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
71 outl(0x000000d0, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
72 outl(0x00000034, DEFAULT_GPIOBASE + 0x38); /* GP_LVL2 */
74 printk(BIOS_SPEW, "\n Initializing drive bay...\n");
75 gpios = inl(DEFAULT_GPIOBASE + 0x38); // GPIO Level 2
76 gpios |= (1 << 0); // GPIO33 = ODD
77 gpios |= (1 << 1); // GPIO34 = IDE_RST#
78 outl(gpios, DEFAULT_GPIOBASE + 0x38); /* GP_LVL2 */
80 gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level
81 gpios &= ~(1 << 13); // ??
82 outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
84 printk(BIOS_SPEW, "\n Initializing Ethernet NIC...\n");
85 gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level
86 gpios &= ~(1 << 24); // Enable LAN Power
87 outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
90 #include "northbridge/intel/i945/early_init.c"
92 static inline int spd_read_byte(unsigned device, unsigned address)
94 return smbus_read_byte(device, address);
97 #include "northbridge/intel/i945/raminit.h"
98 #include "northbridge/intel/i945/raminit.c"
99 #include "northbridge/intel/i945/errata.c"
100 #include "northbridge/intel/i945/debug.c"
102 static void ich7_enable_lpc(void)
105 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
107 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0007);
109 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x3f0f);
110 // Enable 0x02e0 - 0x2ff
111 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x001c02e1);
112 // Enable 0x600 - 0x6ff
113 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x00fc0601);
114 // Enable 0x68 - 0x6f
115 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x00040069);
119 /* This box has two superios, so enabling serial becomes slightly excessive.
120 * We disable a lot of stuff to make sure that there are no conflicts between
121 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
122 * but safe anyways" method.
124 static void pnp_enter_ext_func_mode(device_t dev)
126 unsigned int port = dev >> 8;
130 static void pnp_exit_ext_func_mode(device_t dev)
132 unsigned int port = dev >> 8;
136 static void pnp_write_register(device_t dev, int reg, int val)
138 unsigned int port = dev >> 8;
143 static void early_superio_config(void)
147 dev=PNP_DEV(0x4e, 0x00);
149 pnp_enter_ext_func_mode(dev);
150 pnp_write_register(dev, 0x02, 0x0e); // UART power
151 pnp_write_register(dev, 0x1b, (0x3e8 >> 2)); // UART3 base
152 pnp_write_register(dev, 0x1c, (0x2e8 >> 2)); // UART4 base
153 pnp_write_register(dev, 0x1d, (5 << 4) | 11); // UART3,4 IRQ
154 pnp_write_register(dev, 0x1e, 1); // no 32khz clock
155 pnp_write_register(dev, 0x24, (0x3f8 >> 2)); // UART1 base
156 pnp_write_register(dev, 0x28, (4 << 4) | 0); // UART1,2 IRQ
157 pnp_write_register(dev, 0x2c, 0); // DMA0 FIR
158 pnp_write_register(dev, 0x30, (0x600 >> 4)); // Runtime Register Block Base
160 pnp_write_register(dev, 0x31, 0xce); // GPIO1 DIR
161 pnp_write_register(dev, 0x32, 0x00); // GPIO1 POL
162 pnp_write_register(dev, 0x33, 0x0f); // GPIO2 DIR
163 pnp_write_register(dev, 0x34, 0x00); // GPIO2 POL
164 pnp_write_register(dev, 0x35, 0xa8); // GPIO3 DIR
165 pnp_write_register(dev, 0x36, 0x00); // GPIO3 POL
166 pnp_write_register(dev, 0x37, 0xa8); // GPIO4 DIR
167 pnp_write_register(dev, 0x38, 0x00); // GPIO4 POL
169 pnp_write_register(dev, 0x39, 0x00); // GPIO1 OUT
170 pnp_write_register(dev, 0x40, 0x80); // GPIO2/MISC OUT
171 pnp_write_register(dev, 0x41, 0x00); // GPIO5 OUT
172 pnp_write_register(dev, 0x42, 0xa8); // GPIO5 DIR
173 pnp_write_register(dev, 0x43, 0x00); // GPIO5 POL
174 pnp_write_register(dev, 0x44, 0x00); // GPIO ALT1
175 pnp_write_register(dev, 0x45, 0x50); // GPIO ALT2
176 pnp_write_register(dev, 0x46, 0x00); // GPIO ALT3
178 pnp_write_register(dev, 0x48, 0x55); // GPIO ALT5
179 pnp_write_register(dev, 0x49, 0x55); // GPIO ALT6
180 pnp_write_register(dev, 0x4a, 0x55); // GPIO ALT7
181 pnp_write_register(dev, 0x4b, 0x55); // GPIO ALT8
182 pnp_write_register(dev, 0x4c, 0x55); // GPIO ALT9
183 pnp_write_register(dev, 0x4d, 0x55); // GPIO ALT10
185 pnp_exit_ext_func_mode(dev);
188 static void rcba_config(void)
190 /* Set up virtual channel 0 */
191 //RCBA32(0x0014) = 0x80000001;
192 //RCBA32(0x001c) = 0x03128010;
194 /* Device 1f interrupt pin register */
195 RCBA32(0x3100) = 0x00042220;
196 /* Device 1d interrupt pin register */
197 RCBA32(0x310c) = 0x00214321;
199 /* dev irq route register */
200 RCBA16(0x3140) = 0x0232;
201 RCBA16(0x3142) = 0x3246;
202 RCBA16(0x3144) = 0x0237;
203 RCBA16(0x3146) = 0x3201;
204 RCBA16(0x3148) = 0x3216;
207 RCBA8(0x31ff) = 0x03;
209 /* Enable upper 128bytes of CMOS */
210 RCBA32(0x3400) = (1 << 2);
212 /* Disable unused devices */
213 RCBA32(0x3418) = FD_PCIE6 | FD_PCIE5 | FD_INTLAN | FD_ACMOD | FD_ACAUD | FD_PATA;
214 RCBA32(0x3418) |= (1 << 0); // Required.
216 /* Enable PCIe Root Port Clock Gate */
217 // RCBA32(0x341c) = 0x00000001;
220 /* This should probably go into the ACPI enable trap */
221 /* Set up I/O Trap #0 for 0xfe00 (SMIC) */
222 RCBA32(0x1e84) = 0x00020001;
223 RCBA32(0x1e80) = 0x0000fe01;
225 /* Set up I/O Trap #3 for 0x800-0x80c (Trap) */
226 RCBA32(0x1e9c) = 0x000200f0;
227 RCBA32(0x1e98) = 0x000c0801;
230 static void early_ich7_init(void)
235 // program secondary mlt XXX byte?
236 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
238 // reset rtc power status
239 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
241 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
243 // usb transient disconnect
244 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
246 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
248 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
249 reg32 |= (1 << 29) | (1 << 17);
250 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
252 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
253 reg32 |= (1 << 31) | (1 << 27);
254 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
256 RCBA32(0x0088) = 0x0011d000;
257 RCBA16(0x01fc) = 0x060f;
258 RCBA32(0x01f4) = 0x86000040;
259 RCBA32(0x0214) = 0x10030549;
260 RCBA32(0x0218) = 0x00020504;
261 RCBA8(0x0220) = 0xc5;
262 reg32 = RCBA32(0x3410);
264 RCBA32(0x3410) = reg32;
265 reg32 = RCBA32(0x3430);
268 RCBA32(0x3430) = reg32;
269 RCBA32(0x3418) |= (1 << 0);
270 RCBA16(0x0200) = 0x2008;
271 RCBA8(0x2027) = 0x0d;
272 RCBA16(0x3e08) |= (1 << 7);
273 RCBA16(0x3e48) |= (1 << 7);
274 RCBA32(0x3e0e) |= (1 << 7);
275 RCBA32(0x3e4e) |= (1 << 7);
277 // next step only on ich7m b0 and later:
278 reg32 = RCBA32(0x2034);
279 reg32 &= ~(0x0f << 16);
281 RCBA32(0x2034) = reg32;
286 // Now, this needs to be included because it relies on the symbol
287 // __PRE_RAM_ being set during CAR stage (in order to compile the
288 // BSS free versions of the functions). Either rewrite the code
289 // to be always BSS free, or invent a flag that's better suited than
290 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
292 #include "lib/cbmem.c"
294 void main(unsigned long bist)
305 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
307 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
311 early_superio_config();
313 /* Set up the console */
317 i82801gx_enable_usbdebug(1);
318 early_usbdebug_init();
322 /* Halt if there was a built in self test failure */
323 report_bist_failure(bist);
325 if (MCHBAR16(SSKPD) == 0xCAFE) {
326 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
328 while (1) asm("hlt");
331 /* Perform some early chipset initialization required
332 * before RAM initialization can work
334 i945_early_initialization();
337 reg32 = inl(DEFAULT_PMBASE + 0x04);
338 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
339 if (((reg32 >> 10) & 7) == 5) {
340 #if CONFIG_HAVE_ACPI_RESUME
341 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
343 /* Clear SLP_TYPE. This will break stage2 but
344 * we care for that when we get there.
346 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
349 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
353 /* Enable SPD ROMs and DDR-II DRAM */
356 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
357 dump_spd_registers();
360 sdram_initialize(boot_mode);
362 /* Perform some initialization that must run before stage2 */
365 /* This should probably go away. Until now it is required
366 * and mainboard specific
370 /* Chipset Errata! */
373 /* Initialize the internal PCIe links before we go into stage2 */
374 i945_late_initialization();
376 #if CONFIG_HAVE_ACPI_RESUME == 0
377 /* When doing resume, we must not overwrite RAM */
378 #if CONFIG_DEBUG_RAM_SETUP
379 sdram_dump_mchbar_registers();
382 /* This will not work if TSEG is in place! */
383 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
385 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
386 ram_check(0x00000000, 0x000a0000);
387 ram_check(0x00100000, tom);
391 MCHBAR16(SSKPD) = 0xCAFE;
393 #if CONFIG_HAVE_ACPI_RESUME
394 /* Start address of high memory tables */
395 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
397 /* If there is no high memory area, we didn't boot before, so
398 * this is not a resume. In that case we just create the cbmem toc.
400 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
401 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
403 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
404 * through stage 2. We could keep stuff like stack and heap in high tables
405 * memory completely, but that's a wonderful clean up task for another
408 if (resume_backup_memory)
409 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
411 /* Magic for S3 resume */
412 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);