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>
31 #include <pc80/mc146818rtc.h>
32 #include <console/console.h>
33 #include <cpu/x86/bist.h>
34 #include "northbridge/intel/i945/i945.h"
35 #include "northbridge/intel/i945/raminit.h"
36 #include "southbridge/intel/i82801gx/i82801gx.h"
38 void enable_smbus(void);
40 void setup_ich7_gpios(void)
44 printk(BIOS_DEBUG, " GPIOS...");
45 /* General Registers */
46 outl(0x1f28f7c2, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
47 outl(0xe0e809c3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
48 // Power On value is eede1fbf, we set: (TODO explain why)
58 // We should probably do this explicitly bitwise, see below.
59 outl(0xeee83f83, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
60 /* Output Control Registers */
61 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
62 /* Input Control Registers */
63 outl(0x00000180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
64 outl(0x000000e6, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
65 outl(0x000000d0, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
66 outl(0x00000034, DEFAULT_GPIOBASE + 0x38); /* GP_LVL2 */
68 printk(BIOS_SPEW, "\n Initializing drive bay...\n");
69 gpios = inl(DEFAULT_GPIOBASE + 0x38); // GPIO Level 2
70 gpios |= (1 << 0); // GPIO33 = ODD
71 gpios |= (1 << 1); // GPIO34 = IDE_RST#
72 outl(gpios, DEFAULT_GPIOBASE + 0x38); /* GP_LVL2 */
74 gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level
75 gpios &= ~(1 << 13); // ??
76 outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
78 printk(BIOS_SPEW, "\n Initializing Ethernet NIC...\n");
79 gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level
80 gpios &= ~(1 << 24); // Enable LAN Power
81 outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
84 static void ich7_enable_lpc(void)
87 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
89 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0007);
91 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x3f0f);
92 // Enable 0x02e0 - 0x2ff
93 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x001c02e1);
94 // Enable 0x600 - 0x6ff
95 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x00fc0601);
97 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x00040069);
100 /* This box has two superios, so enabling serial becomes slightly excessive.
101 * We disable a lot of stuff to make sure that there are no conflicts between
102 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
103 * but safe anyways" method.
105 static void pnp_enter_ext_func_mode(device_t dev)
107 unsigned int port = dev >> 8;
111 static void pnp_exit_ext_func_mode(device_t dev)
113 unsigned int port = dev >> 8;
117 static void pnp_write_register(device_t dev, int reg, int val)
119 unsigned int port = dev >> 8;
124 static void early_superio_config(void)
128 dev=PNP_DEV(0x4e, 0x00);
130 pnp_enter_ext_func_mode(dev);
131 pnp_write_register(dev, 0x02, 0x0e); // UART power
132 pnp_write_register(dev, 0x1b, (0x3e8 >> 2)); // UART3 base
133 pnp_write_register(dev, 0x1c, (0x2e8 >> 2)); // UART4 base
134 pnp_write_register(dev, 0x1d, (5 << 4) | 11); // UART3,4 IRQ
135 pnp_write_register(dev, 0x1e, 1); // no 32khz clock
136 pnp_write_register(dev, 0x24, (0x3f8 >> 2)); // UART1 base
137 pnp_write_register(dev, 0x28, (4 << 4) | 0); // UART1,2 IRQ
138 pnp_write_register(dev, 0x2c, 0); // DMA0 FIR
139 pnp_write_register(dev, 0x30, (0x600 >> 4)); // Runtime Register Block Base
141 pnp_write_register(dev, 0x31, 0xce); // GPIO1 DIR
142 pnp_write_register(dev, 0x32, 0x00); // GPIO1 POL
143 pnp_write_register(dev, 0x33, 0x0f); // GPIO2 DIR
144 pnp_write_register(dev, 0x34, 0x00); // GPIO2 POL
145 pnp_write_register(dev, 0x35, 0xa8); // GPIO3 DIR
146 pnp_write_register(dev, 0x36, 0x00); // GPIO3 POL
147 pnp_write_register(dev, 0x37, 0xa8); // GPIO4 DIR
148 pnp_write_register(dev, 0x38, 0x00); // GPIO4 POL
150 pnp_write_register(dev, 0x39, 0x00); // GPIO1 OUT
151 pnp_write_register(dev, 0x40, 0x80); // GPIO2/MISC OUT
152 pnp_write_register(dev, 0x41, 0x00); // GPIO5 OUT
153 pnp_write_register(dev, 0x42, 0xa8); // GPIO5 DIR
154 pnp_write_register(dev, 0x43, 0x00); // GPIO5 POL
155 pnp_write_register(dev, 0x44, 0x00); // GPIO ALT1
156 pnp_write_register(dev, 0x45, 0x50); // GPIO ALT2
157 pnp_write_register(dev, 0x46, 0x00); // GPIO ALT3
159 pnp_write_register(dev, 0x48, 0x55); // GPIO ALT5
160 pnp_write_register(dev, 0x49, 0x55); // GPIO ALT6
161 pnp_write_register(dev, 0x4a, 0x55); // GPIO ALT7
162 pnp_write_register(dev, 0x4b, 0x55); // GPIO ALT8
163 pnp_write_register(dev, 0x4c, 0x55); // GPIO ALT9
164 pnp_write_register(dev, 0x4d, 0x55); // GPIO ALT10
166 pnp_exit_ext_func_mode(dev);
169 static void rcba_config(void)
171 /* Set up virtual channel 0 */
172 //RCBA32(0x0014) = 0x80000001;
173 //RCBA32(0x001c) = 0x03128010;
175 /* Device 1f interrupt pin register */
176 RCBA32(0x3100) = 0x00042220;
177 /* Device 1d interrupt pin register */
178 RCBA32(0x310c) = 0x00214321;
180 /* dev irq route register */
181 RCBA16(0x3140) = 0x0232;
182 RCBA16(0x3142) = 0x3246;
183 RCBA16(0x3144) = 0x0237;
184 RCBA16(0x3146) = 0x3201;
185 RCBA16(0x3148) = 0x3216;
188 RCBA8(0x31ff) = 0x03;
190 /* Enable upper 128bytes of CMOS */
191 RCBA32(0x3400) = (1 << 2);
193 /* Disable unused devices */
194 RCBA32(0x3418) = FD_PCIE6 | FD_PCIE5 | FD_INTLAN | FD_ACMOD | FD_ACAUD | FD_PATA;
195 RCBA32(0x3418) |= (1 << 0); // Required.
197 /* Enable PCIe Root Port Clock Gate */
198 // RCBA32(0x341c) = 0x00000001;
201 /* This should probably go into the ACPI enable trap */
202 /* Set up I/O Trap #0 for 0xfe00 (SMIC) */
203 RCBA32(0x1e84) = 0x00020001;
204 RCBA32(0x1e80) = 0x0000fe01;
206 /* Set up I/O Trap #3 for 0x800-0x80c (Trap) */
207 RCBA32(0x1e9c) = 0x000200f0;
208 RCBA32(0x1e98) = 0x000c0801;
211 static void early_ich7_init(void)
216 // program secondary mlt XXX byte?
217 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
219 // reset rtc power status
220 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
222 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
224 // usb transient disconnect
225 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
227 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
229 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
230 reg32 |= (1 << 29) | (1 << 17);
231 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
233 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
234 reg32 |= (1 << 31) | (1 << 27);
235 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
237 RCBA32(0x0088) = 0x0011d000;
238 RCBA16(0x01fc) = 0x060f;
239 RCBA32(0x01f4) = 0x86000040;
240 RCBA32(0x0214) = 0x10030549;
241 RCBA32(0x0218) = 0x00020504;
242 RCBA8(0x0220) = 0xc5;
243 reg32 = RCBA32(0x3410);
245 RCBA32(0x3410) = reg32;
246 reg32 = RCBA32(0x3430);
249 RCBA32(0x3430) = reg32;
250 RCBA32(0x3418) |= (1 << 0);
251 RCBA16(0x0200) = 0x2008;
252 RCBA8(0x2027) = 0x0d;
253 RCBA16(0x3e08) |= (1 << 7);
254 RCBA16(0x3e48) |= (1 << 7);
255 RCBA32(0x3e0e) |= (1 << 7);
256 RCBA32(0x3e4e) |= (1 << 7);
258 // next step only on ich7m b0 and later:
259 reg32 = RCBA32(0x2034);
260 reg32 &= ~(0x0f << 16);
262 RCBA32(0x2034) = reg32;
267 // Now, this needs to be included because it relies on the symbol
268 // __PRE_RAM_ being set during CAR stage (in order to compile the
269 // BSS free versions of the functions). Either rewrite the code
270 // to be always BSS free, or invent a flag that's better suited than
271 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
273 #include "lib/cbmem.c"
275 void main(unsigned long bist)
286 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
288 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
292 early_superio_config();
294 /* Set up the console */
298 i82801gx_enable_usbdebug(1);
299 early_usbdebug_init();
303 /* Halt if there was a built in self test failure */
304 report_bist_failure(bist);
306 if (MCHBAR16(SSKPD) == 0xCAFE) {
307 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
309 while (1) asm("hlt");
312 /* Perform some early chipset initialization required
313 * before RAM initialization can work
315 i945_early_initialization();
318 reg32 = inl(DEFAULT_PMBASE + 0x04);
319 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
320 if (((reg32 >> 10) & 7) == 5) {
321 #if CONFIG_HAVE_ACPI_RESUME
322 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
324 /* Clear SLP_TYPE. This will break stage2 but
325 * we care for that when we get there.
327 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
330 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
334 /* Enable SPD ROMs and DDR-II DRAM */
337 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
338 dump_spd_registers();
341 sdram_initialize(boot_mode);
343 /* Perform some initialization that must run before stage2 */
346 /* This should probably go away. Until now it is required
347 * and mainboard specific
351 /* Chipset Errata! */
354 /* Initialize the internal PCIe links before we go into stage2 */
355 i945_late_initialization();
357 #if CONFIG_HAVE_ACPI_RESUME == 0
358 /* When doing resume, we must not overwrite RAM */
359 #if CONFIG_DEBUG_RAM_SETUP
360 sdram_dump_mchbar_registers();
363 /* This will not work if TSEG is in place! */
364 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
366 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
367 ram_check(0x00000000, 0x000a0000);
368 ram_check(0x00100000, tom);
372 MCHBAR16(SSKPD) = 0xCAFE;
374 #if CONFIG_HAVE_ACPI_RESUME
375 /* Start address of high memory tables */
376 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
378 /* If there is no high memory area, we didn't boot before, so
379 * this is not a resume. In that case we just create the cbmem toc.
381 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
382 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
384 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
385 * through stage 2. We could keep stuff like stack and heap in high tables
386 * memory completely, but that's a wonderful clean up task for another
389 if (resume_backup_memory)
390 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
392 /* Magic for S3 resume */
393 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);