2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2008 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 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
20 // __PRE_RAM__ means: use "unsigned" for device, not a struct.
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 "superio/smsc/lpc47m15x/lpc47m15x.h"
31 #include <pc80/mc146818rtc.h>
32 #include <console/console.h>
34 #include <cpu/x86/bist.h>
35 #include "superio/smsc/lpc47m15x/lpc47m15x_early_serial.c"
36 #include "northbridge/intel/i945/i945.h"
37 #include "northbridge/intel/i945/raminit.h"
38 #include "southbridge/intel/i82801gx/i82801gx.h"
40 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
42 void setup_ich7_gpios(void)
44 /* TODO: This is highly board specific and should be moved */
45 printk(BIOS_DEBUG, " GPIOS...");
46 /* General Registers */
47 outl(0x3f3df7c1, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
48 outl(0xc6fcbfc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
49 outl(0xecfefdff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
50 /* Output Control Registers */
51 outl(0x00040000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
52 /* Input Control Registers */
53 outl(0x0000a000, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
54 outl(0x000000ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
55 outl(0x000000bf, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
56 outl(0x000300fd, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
59 static void ich7_enable_lpc(void)
62 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
63 // Set COM1/COM2 decode range
64 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
66 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x140d);
67 // Enable SuperIO Power Management Events
68 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x007c0681);
71 /* This box has two superios, so enabling serial becomes slightly excessive.
72 * We disable a lot of stuff to make sure that there are no conflicts between
73 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
74 * but safe anyways" method.
76 static void early_superio_config_lpc47m15x(void)
80 dev=PNP_DEV(0x2e, LPC47M15X_SP1);
81 pnp_enter_conf_state(dev);
83 pnp_set_logical_device(dev);
84 pnp_set_enable(dev, 0);
85 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
86 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
87 pnp_set_enable(dev, 1);
89 /* Enable SuperIO PM */
90 dev=PNP_DEV(0x2e, LPC47M15X_PME);
91 pnp_set_logical_device(dev);
92 pnp_set_enable(dev, 0);
93 pnp_set_iobase(dev, PNP_IDX_IO0, 0x680);
94 pnp_set_enable(dev, 1);
96 pnp_exit_conf_state(dev);
99 static void rcba_config(void)
101 /* Set up virtual channel 0 */
102 //RCBA32(0x0014) = 0x80000001;
103 //RCBA32(0x001c) = 0x03128010;
105 /* Device 1f interrupt pin register */
106 RCBA32(0x3100) = 0x00042210;
107 /* Device 1d interrupt pin register */
108 RCBA32(0x310c) = 0x00214321;
110 /* dev irq route register */
111 RCBA16(0x3140) = 0x0132;
112 RCBA16(0x3142) = 0x0146;
113 RCBA16(0x3144) = 0x0237;
114 RCBA16(0x3146) = 0x3201;
115 RCBA16(0x3148) = 0x0146;
118 RCBA8(0x31ff) = 0x03;
120 /* Enable upper 128bytes of CMOS */
121 RCBA32(0x3400) = (1 << 2);
123 /* Disable unused devices */
124 //RCBA32(0x3418) = FD_PCIE6|FD_PCIE5|FD_PCIE4|FD_ACMOD|FD_ACAUD|FD_PATA;
125 // RCBA32(0x3418) |= (1 << 0); // Required.
127 RCBA32(0x3418) = 0x003204e1;
129 /* Enable PCIe Root Port Clock Gate */
130 // RCBA32(0x341c) = 0x00000001;
133 static void early_ich7_init(void)
138 // program secondary mlt XXX byte?
139 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
141 // reset rtc power status
142 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
144 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
146 // usb transient disconnect
147 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
149 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
151 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
152 reg32 |= (1 << 29) | (1 << 17);
153 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
155 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
156 reg32 |= (1 << 31) | (1 << 27);
157 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
159 RCBA32(0x0088) = 0x0011d000;
160 RCBA16(0x01fc) = 0x060f;
161 RCBA32(0x01f4) = 0x86000040;
162 RCBA32(0x0214) = 0x10030549;
163 RCBA32(0x0218) = 0x00020504;
164 RCBA8(0x0220) = 0xc5;
165 reg32 = RCBA32(0x3410);
167 RCBA32(0x3410) = reg32;
168 reg32 = RCBA32(0x3430);
171 RCBA32(0x3430) = reg32;
172 RCBA32(0x3418) |= (1 << 0);
173 RCBA16(0x0200) = 0x2008;
174 RCBA8(0x2027) = 0x0d;
175 RCBA16(0x3e08) |= (1 << 7);
176 RCBA16(0x3e48) |= (1 << 7);
177 RCBA32(0x3e0e) |= (1 << 7);
178 RCBA32(0x3e4e) |= (1 << 7);
180 // next step only on ich7m b0 and later:
181 reg32 = RCBA32(0x2034);
182 reg32 &= ~(0x0f << 16);
184 RCBA32(0x2034) = reg32;
189 // Now, this needs to be included because it relies on the symbol
190 // __PRE_RAM__ being set during CAR stage (in order to compile the
191 // BSS free versions of the functions). Either rewrite the code
192 // to be always BSS free, or invent a flag that's better suited than
193 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
195 #include "lib/cbmem.c"
197 void main(unsigned long bist)
206 early_superio_config_lpc47m15x();
208 /* Set up the console */
212 i82801gx_enable_usbdebug(1);
213 early_usbdebug_init();
218 /* Halt if there was a built in self test failure */
219 report_bist_failure(bist);
221 if (MCHBAR16(SSKPD) == 0xCAFE) {
222 printk(BIOS_DEBUG, "soft reset detected.\n");
226 /* Perform some early chipset initialization required
227 * before RAM initialization can work
229 i945_early_initialization();
232 reg32 = inl(DEFAULT_PMBASE + 0x04);
233 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
234 if (((reg32 >> 10) & 7) == 5) {
235 #if CONFIG_HAVE_ACPI_RESUME
236 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
238 /* Clear SLP_TYPE. This will break stage2 but
239 * we care for that when we get there.
241 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
243 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
247 /* Enable SPD ROMs and DDR-II DRAM */
250 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
251 dump_spd_registers();
254 sdram_initialize(boot_mode);
256 /* Perform some initialization that must run before stage2 */
259 /* This should probably go away. Until now it is required
260 * and mainboard specific
264 /* Chipset Errata! */
267 /* Initialize the internal PCIe links before we go into stage2 */
268 i945_late_initialization();
270 #if !CONFIG_HAVE_ACPI_RESUME
271 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
272 #if CONFIG_DEBUG_RAM_SETUP
273 sdram_dump_mchbar_registers();
277 /* This will not work if TSEG is in place! */
278 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
280 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
281 ram_check(0x00000000, 0x000a0000);
282 //ram_check(0x00100000, tom);
287 MCHBAR16(SSKPD) = 0xCAFE;
289 #if CONFIG_HAVE_ACPI_RESUME
290 /* Start address of high memory tables */
291 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
293 /* If there is no high memory area, we didn't boot before, so
294 * this is not a resume. In that case we just create the cbmem toc.
296 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
297 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
299 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
300 * through stage 2. We could keep stuff like stack and heap in high tables
301 * memory completely, but that's a wonderful clean up task for another
304 if (resume_backup_memory)
305 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
307 /* Magic for S3 resume */
308 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);