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.
23 /* Configuration of the i945 driver */
24 #define CHIPSET_I945GC 1
25 #define CHANNEL_XOR_RANDOMIZATION 1
30 #include <arch/romcc_io.h>
31 #include <device/pci_def.h>
32 #include <device/pnp_def.h>
33 #include <cpu/x86/lapic.h>
35 #include "superio/smsc/lpc47m15x/lpc47m15x.h"
37 #include "option_table.h"
38 #include "pc80/mc146818rtc_early.c"
40 #include <console/console.h>
41 #include "pc80/serial.c"
42 #include "arch/i386/lib/console.c"
43 #include <cpu/x86/bist.h>
45 #if CONFIG_USBDEBUG_DIRECT
46 #define DBGP_DEFAULT 1
47 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
48 #include "pc80/usbdebug_direct_serial.c"
51 #include "lib/ramtest.c"
52 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
53 #include "superio/smsc/lpc47m15x/lpc47m15x_early_serial.c"
55 #include "northbridge/intel/i945/udelay.c"
57 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
59 #include "southbridge/intel/i82801gx/i82801gx.h"
60 static void setup_ich7_gpios(void)
62 /* TODO: This is highly board specific and should be moved */
63 printk_debug(" GPIOS...");
64 /* General Registers */
65 outl(0x3f3df7c1, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
66 outl(0xc6fcbfc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
67 outl(0xecfefdff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
68 /* Output Control Registers */
69 outl(0x00040000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
70 /* Input Control Registers */
71 outl(0x0000a000, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
72 outl(0x000000ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
73 outl(0x000000bf, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
74 outl(0x000300fd, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
77 #include "northbridge/intel/i945/early_init.c"
79 static inline int spd_read_byte(unsigned device, unsigned address)
81 return smbus_read_byte(device, address);
84 #include "northbridge/intel/i945/raminit.h"
85 #include "northbridge/intel/i945/raminit.c"
86 #include "northbridge/intel/i945/reset_test.c"
87 #include "northbridge/intel/i945/errata.c"
88 #include "northbridge/intel/i945/debug.c"
90 static void ich7_enable_lpc(void)
93 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
94 // Set COM1/COM2 decode range
95 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
97 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x140d);
98 // Enable SuperIO Power Management Events
99 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x007c0681);
103 /* This box has two superios, so enabling serial becomes slightly excessive.
104 * We disable a lot of stuff to make sure that there are no conflicts between
105 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
106 * but safe anyways" method.
108 static void early_superio_config_lpc47m15x(void)
112 dev=PNP_DEV(0x2e, LPC47M15X_SP1);
113 pnp_enter_conf_state(dev);
115 pnp_set_logical_device(dev);
116 pnp_set_enable(dev, 0);
117 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
118 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
119 pnp_set_enable(dev, 1);
121 /* Enable SuperIO PM */
122 dev=PNP_DEV(0x2e, LPC47M15X_PME);
123 pnp_set_logical_device(dev);
124 pnp_set_enable(dev, 0);
125 pnp_set_iobase(dev, PNP_IDX_IO0, 0x680);
126 pnp_set_enable(dev, 1);
128 pnp_exit_conf_state(dev);
131 static void rcba_config(void)
133 /* Set up virtual channel 0 */
134 //RCBA32(0x0014) = 0x80000001;
135 //RCBA32(0x001c) = 0x03128010;
137 /* Device 1f interrupt pin register */
138 RCBA32(0x3100) = 0x00042210;
139 /* Device 1d interrupt pin register */
140 RCBA32(0x310c) = 0x00214321;
142 /* dev irq route register */
143 RCBA16(0x3140) = 0x0132;
144 RCBA16(0x3142) = 0x0146;
145 RCBA16(0x3144) = 0x0237;
146 RCBA16(0x3146) = 0x3201;
147 RCBA16(0x3148) = 0x0146;
150 RCBA8(0x31ff) = 0x03;
152 /* Enable upper 128bytes of CMOS */
153 RCBA32(0x3400) = (1 << 2);
155 /* Disable unused devices */
156 //RCBA32(0x3418) = FD_PCIE6|FD_PCIE5|FD_PCIE4|FD_ACMOD|FD_ACAUD|FD_PATA;
157 // RCBA32(0x3418) |= (1 << 0); // Required.
159 RCBA32(0x3418) = 0x003204e1;
161 /* Enable PCIe Root Port Clock Gate */
162 // RCBA32(0x341c) = 0x00000001;
165 static void early_ich7_init(void)
170 // program secondary mlt XXX byte?
171 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
173 // reset rtc power status
174 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
176 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
178 // usb transient disconnect
179 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
181 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
183 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
184 reg32 |= (1 << 29) | (1 << 17);
185 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
187 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
188 reg32 |= (1 << 31) | (1 << 27);
189 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
191 RCBA32(0x0088) = 0x0011d000;
192 RCBA16(0x01fc) = 0x060f;
193 RCBA32(0x01f4) = 0x86000040;
194 RCBA32(0x0214) = 0x10030549;
195 RCBA32(0x0218) = 0x00020504;
196 RCBA8(0x0220) = 0xc5;
197 reg32 = RCBA32(0x3410);
199 RCBA32(0x3410) = reg32;
200 reg32 = RCBA32(0x3430);
203 RCBA32(0x3430) = reg32;
204 RCBA32(0x3418) |= (1 << 0);
205 RCBA16(0x0200) = 0x2008;
206 RCBA8(0x2027) = 0x0d;
207 RCBA16(0x3e08) |= (1 << 7);
208 RCBA16(0x3e48) |= (1 << 7);
209 RCBA32(0x3e0e) |= (1 << 7);
210 RCBA32(0x3e4e) |= (1 << 7);
212 // next step only on ich7m b0 and later:
213 reg32 = RCBA32(0x2034);
214 reg32 &= ~(0x0f << 16);
216 RCBA32(0x2034) = reg32;
219 #include "southbridge/intel/i82801gx/cmos_failover.c"
223 // Now, this needs to be included because it relies on the symbol
224 // __PRE_RAM__ being set during CAR stage (in order to compile the
225 // BSS free versions of the functions). Either rewrite the code
226 // to be always BSS free, or invent a flag that's better suited than
227 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
229 #include "lib/cbmem.c"
231 void real_main(unsigned long bist)
241 early_superio_config_lpc47m15x();
243 /* Set up the console */
246 #if CONFIG_USBDEBUG_DIRECT
247 i82801gx_enable_usbdebug_direct(DBGP_DEFAULT);
248 early_usbdebug_direct_init();
253 /* Halt if there was a built in self test failure */
254 report_bist_failure(bist);
256 if (MCHBAR16(SSKPD) == 0xCAFE) {
257 printk_debug("soft reset detected.\n");
261 /* Perform some early chipset initialization required
262 * before RAM initialization can work
264 i945_early_initialization();
267 reg32 = inl(DEFAULT_PMBASE + 0x04);
268 printk_debug("PM1_CNT: %08x\n", reg32);
269 if (((reg32 >> 10) & 7) == 5) {
270 #if CONFIG_HAVE_ACPI_RESUME
271 printk_debug("Resume from S3 detected.\n");
273 /* Clear SLP_TYPE. This will break stage2 but
274 * we care for that when we get there.
276 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
278 printk_debug("Resume from S3 detected, but disabled.\n");
282 /* Enable SPD ROMs and DDR-II DRAM */
285 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
286 dump_spd_registers();
289 sdram_initialize(boot_mode);
291 /* Perform some initialization that must run before stage2 */
294 /* This should probably go away. Until now it is required
295 * and mainboard specific
299 /* Chipset Errata! */
302 /* Initialize the internal PCIe links before we go into stage2 */
303 i945_late_initialization();
305 #if !CONFIG_HAVE_ACPI_RESUME
306 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
307 #if defined(DEBUG_RAM_SETUP)
308 sdram_dump_mchbar_registers();
312 /* This will not work if TSEG is in place! */
313 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
315 printk_debug("TOM: 0x%08x\n", tom);
316 ram_check(0x00000000, 0x000a0000);
317 //ram_check(0x00100000, tom);
322 MCHBAR16(SSKPD) = 0xCAFE;
324 #if CONFIG_HAVE_ACPI_RESUME
325 /* Start address of high memory tables */
326 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
328 /* If there is no high memory area, we didn't boot before, so
329 * this is not a resume. In that case we just create the cbmem toc.
331 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
332 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
334 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
335 * through stage 2. We could keep stuff like stack and heap in high tables
336 * memory completely, but that's a wonderful clean up task for another
339 if (resume_backup_memory)
340 memcpy(resume_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
342 /* Magic for S3 resume */
343 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);
348 #include "cpu/intel/model_106cx/cache_as_ram_disable.c"