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>
31 #include "superio/smsc/lpc47m15x/lpc47m15x.h"
33 #include <pc80/mc146818rtc.h>
35 #include <console/console.h>
37 #include <cpu/x86/bist.h>
39 #include "superio/smsc/lpc47m15x/lpc47m15x_early_serial.c"
41 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
43 #include "northbridge/intel/i945/i945.h"
44 #include "northbridge/intel/i945/raminit.h"
45 #include "southbridge/intel/i82801gx/i82801gx.h"
47 void enable_smbus(void);
49 void setup_ich7_gpios(void)
51 /* TODO: This is highly board specific and should be moved */
52 printk(BIOS_DEBUG, " GPIOS...");
53 /* General Registers */
54 outl(0x3f3df7c1, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
55 outl(0xc6fcbfc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
56 outl(0xecfefdff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
57 /* Output Control Registers */
58 outl(0x00040000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
59 /* Input Control Registers */
60 outl(0x0000a000, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
61 outl(0x000000ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
62 outl(0x000000bf, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
63 outl(0x000300fd, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
66 static void ich7_enable_lpc(void)
69 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
70 // Set COM1/COM2 decode range
71 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
73 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x140d);
74 // Enable SuperIO Power Management Events
75 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x007c0681);
78 /* This box has two superios, so enabling serial becomes slightly excessive.
79 * We disable a lot of stuff to make sure that there are no conflicts between
80 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
81 * but safe anyways" method.
83 static void early_superio_config_lpc47m15x(void)
87 dev=PNP_DEV(0x2e, LPC47M15X_SP1);
88 pnp_enter_conf_state(dev);
90 pnp_set_logical_device(dev);
91 pnp_set_enable(dev, 0);
92 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
93 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
94 pnp_set_enable(dev, 1);
96 /* Enable SuperIO PM */
97 dev=PNP_DEV(0x2e, LPC47M15X_PME);
98 pnp_set_logical_device(dev);
99 pnp_set_enable(dev, 0);
100 pnp_set_iobase(dev, PNP_IDX_IO0, 0x680);
101 pnp_set_enable(dev, 1);
103 pnp_exit_conf_state(dev);
106 static void rcba_config(void)
108 /* Set up virtual channel 0 */
109 //RCBA32(0x0014) = 0x80000001;
110 //RCBA32(0x001c) = 0x03128010;
112 /* Device 1f interrupt pin register */
113 RCBA32(0x3100) = 0x00042210;
114 /* Device 1d interrupt pin register */
115 RCBA32(0x310c) = 0x00214321;
117 /* dev irq route register */
118 RCBA16(0x3140) = 0x0132;
119 RCBA16(0x3142) = 0x0146;
120 RCBA16(0x3144) = 0x0237;
121 RCBA16(0x3146) = 0x3201;
122 RCBA16(0x3148) = 0x0146;
125 RCBA8(0x31ff) = 0x03;
127 /* Enable upper 128bytes of CMOS */
128 RCBA32(0x3400) = (1 << 2);
130 /* Disable unused devices */
131 //RCBA32(0x3418) = FD_PCIE6|FD_PCIE5|FD_PCIE4|FD_ACMOD|FD_ACAUD|FD_PATA;
132 // RCBA32(0x3418) |= (1 << 0); // Required.
134 RCBA32(0x3418) = 0x003204e1;
136 /* Enable PCIe Root Port Clock Gate */
137 // RCBA32(0x341c) = 0x00000001;
140 static void early_ich7_init(void)
145 // program secondary mlt XXX byte?
146 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
148 // reset rtc power status
149 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
151 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
153 // usb transient disconnect
154 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
156 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
158 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
159 reg32 |= (1 << 29) | (1 << 17);
160 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
162 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
163 reg32 |= (1 << 31) | (1 << 27);
164 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
166 RCBA32(0x0088) = 0x0011d000;
167 RCBA16(0x01fc) = 0x060f;
168 RCBA32(0x01f4) = 0x86000040;
169 RCBA32(0x0214) = 0x10030549;
170 RCBA32(0x0218) = 0x00020504;
171 RCBA8(0x0220) = 0xc5;
172 reg32 = RCBA32(0x3410);
174 RCBA32(0x3410) = reg32;
175 reg32 = RCBA32(0x3430);
178 RCBA32(0x3430) = reg32;
179 RCBA32(0x3418) |= (1 << 0);
180 RCBA16(0x0200) = 0x2008;
181 RCBA8(0x2027) = 0x0d;
182 RCBA16(0x3e08) |= (1 << 7);
183 RCBA16(0x3e48) |= (1 << 7);
184 RCBA32(0x3e0e) |= (1 << 7);
185 RCBA32(0x3e4e) |= (1 << 7);
187 // next step only on ich7m b0 and later:
188 reg32 = RCBA32(0x2034);
189 reg32 &= ~(0x0f << 16);
191 RCBA32(0x2034) = reg32;
196 // Now, this needs to be included because it relies on the symbol
197 // __PRE_RAM__ being set during CAR stage (in order to compile the
198 // BSS free versions of the functions). Either rewrite the code
199 // to be always BSS free, or invent a flag that's better suited than
200 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
202 #include "lib/cbmem.c"
204 void main(unsigned long bist)
214 early_superio_config_lpc47m15x();
216 /* Set up the console */
220 i82801gx_enable_usbdebug(1);
221 early_usbdebug_init();
226 /* Halt if there was a built in self test failure */
227 report_bist_failure(bist);
229 if (MCHBAR16(SSKPD) == 0xCAFE) {
230 printk(BIOS_DEBUG, "soft reset detected.\n");
234 /* Perform some early chipset initialization required
235 * before RAM initialization can work
237 i945_early_initialization();
240 reg32 = inl(DEFAULT_PMBASE + 0x04);
241 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
242 if (((reg32 >> 10) & 7) == 5) {
243 #if CONFIG_HAVE_ACPI_RESUME
244 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
246 /* Clear SLP_TYPE. This will break stage2 but
247 * we care for that when we get there.
249 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
251 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
255 /* Enable SPD ROMs and DDR-II DRAM */
258 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
259 dump_spd_registers();
262 sdram_initialize(boot_mode);
264 /* Perform some initialization that must run before stage2 */
267 /* This should probably go away. Until now it is required
268 * and mainboard specific
272 /* Chipset Errata! */
275 /* Initialize the internal PCIe links before we go into stage2 */
276 i945_late_initialization();
278 #if !CONFIG_HAVE_ACPI_RESUME
279 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
280 #if CONFIG_DEBUG_RAM_SETUP
281 sdram_dump_mchbar_registers();
285 /* This will not work if TSEG is in place! */
286 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
288 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
289 ram_check(0x00000000, 0x000a0000);
290 //ram_check(0x00100000, tom);
295 MCHBAR16(SSKPD) = 0xCAFE;
297 #if CONFIG_HAVE_ACPI_RESUME
298 /* Start address of high memory tables */
299 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
301 /* If there is no high memory area, we didn't boot before, so
302 * this is not a resume. In that case we just create the cbmem toc.
304 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
305 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
307 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
308 * through stage 2. We could keep stuff like stack and heap in high tables
309 * memory completely, but that's a wonderful clean up task for another
312 if (resume_backup_memory)
313 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
315 /* Magic for S3 resume */
316 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);