Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2008-2009 coresystems GmbH |
| 5 | * 2012 secunet Security Networks AG |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; version 2 of |
| 10 | * the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
Paul Menzel | a46a712 | 2013-02-23 18:37:27 +0100 | [diff] [blame] | 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 20 | */ |
| 21 | |
| 22 | #include <console/console.h> |
| 23 | #include <device/device.h> |
| 24 | #include <device/pci.h> |
| 25 | #include <device/pci_ids.h> |
| 26 | #include <pc80/mc146818rtc.h> |
| 27 | #include <pc80/isa-dma.h> |
| 28 | #include <pc80/i8259.h> |
| 29 | #include <arch/io.h> |
| 30 | #include <arch/ioapic.h> |
| 31 | #include <arch/acpi.h> |
| 32 | #include <cpu/cpu.h> |
| 33 | #include <cpu/x86/smm.h> |
Vladimir Serbinenko | 33769a5 | 2014-08-30 22:39:20 +0200 | [diff] [blame] | 34 | #include <arch/acpigen.h> |
| 35 | #include <cbmem.h> |
| 36 | #include <string.h> |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 37 | #include "i82801ix.h" |
Vladimir Serbinenko | 33769a5 | 2014-08-30 22:39:20 +0200 | [diff] [blame] | 38 | #include "nvs.h" |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 39 | |
| 40 | #define NMI_OFF 0 |
| 41 | |
| 42 | #define ENABLE_ACPI_MODE_IN_COREBOOT 0 |
| 43 | #define TEST_SMM_FLASH_LOCKDOWN 0 |
| 44 | |
| 45 | typedef struct southbridge_intel_i82801ix_config config_t; |
| 46 | |
| 47 | static void i82801ix_enable_apic(struct device *dev) |
| 48 | { |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 49 | u32 reg32; |
| 50 | volatile u32 *ioapic_index = (volatile u32 *)(IO_APIC_ADDR); |
| 51 | volatile u32 *ioapic_data = (volatile u32 *)(IO_APIC_ADDR + 0x10); |
| 52 | |
| 53 | /* Enable IOAPIC. Keep APIC Range Select at zero. */ |
| 54 | RCBA8(0x31ff) = 0x03; |
| 55 | /* We have to read 0x31ff back if bit0 changed. */ |
Paul Menzel | d0299e4 | 2013-10-21 09:28:19 +0200 | [diff] [blame] | 56 | RCBA8(0x31ff); |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 57 | |
| 58 | /* Lock maximum redirection entries (MRE), R/WO register. */ |
| 59 | *ioapic_index = 0x01; |
| 60 | reg32 = *ioapic_data; |
| 61 | *ioapic_index = 0x01; |
| 62 | *ioapic_data = reg32; |
| 63 | |
| 64 | setup_ioapic(IO_APIC_ADDR, 2); /* ICH7 code uses id 2. */ |
| 65 | } |
| 66 | |
| 67 | static void i82801ix_enable_serial_irqs(struct device *dev) |
| 68 | { |
| 69 | /* Set packet length and toggle silent mode bit for one frame. */ |
| 70 | pci_write_config8(dev, D31F0_SERIRQ_CNTL, |
| 71 | (1 << 7) | (1 << 6) | ((21 - 17) << 2) | (0 << 0)); |
| 72 | } |
| 73 | |
| 74 | /* PIRQ[n]_ROUT[3:0] - PIRQ Routing Control |
| 75 | * 0x00 - 0000 = Reserved |
| 76 | * 0x01 - 0001 = Reserved |
| 77 | * 0x02 - 0010 = Reserved |
| 78 | * 0x03 - 0011 = IRQ3 |
| 79 | * 0x04 - 0100 = IRQ4 |
| 80 | * 0x05 - 0101 = IRQ5 |
| 81 | * 0x06 - 0110 = IRQ6 |
| 82 | * 0x07 - 0111 = IRQ7 |
| 83 | * 0x08 - 1000 = Reserved |
| 84 | * 0x09 - 1001 = IRQ9 |
| 85 | * 0x0A - 1010 = IRQ10 |
| 86 | * 0x0B - 1011 = IRQ11 |
| 87 | * 0x0C - 1100 = IRQ12 |
| 88 | * 0x0D - 1101 = Reserved |
| 89 | * 0x0E - 1110 = IRQ14 |
| 90 | * 0x0F - 1111 = IRQ15 |
| 91 | * PIRQ[n]_ROUT[7] - PIRQ Routing Control |
| 92 | * 0x80 - The PIRQ is not routed. |
| 93 | */ |
| 94 | |
| 95 | static void i82801ix_pirq_init(device_t dev) |
| 96 | { |
| 97 | device_t irq_dev; |
| 98 | /* Get the chip configuration */ |
| 99 | config_t *config = dev->chip_info; |
| 100 | |
| 101 | pci_write_config8(dev, D31F0_PIRQA_ROUT, config->pirqa_routing); |
| 102 | pci_write_config8(dev, D31F0_PIRQB_ROUT, config->pirqb_routing); |
| 103 | pci_write_config8(dev, D31F0_PIRQC_ROUT, config->pirqc_routing); |
| 104 | pci_write_config8(dev, D31F0_PIRQD_ROUT, config->pirqd_routing); |
| 105 | |
| 106 | pci_write_config8(dev, D31F0_PIRQE_ROUT, config->pirqe_routing); |
| 107 | pci_write_config8(dev, D31F0_PIRQF_ROUT, config->pirqf_routing); |
| 108 | pci_write_config8(dev, D31F0_PIRQG_ROUT, config->pirqg_routing); |
| 109 | pci_write_config8(dev, D31F0_PIRQH_ROUT, config->pirqh_routing); |
| 110 | |
| 111 | /* Eric Biederman once said we should let the OS do this. |
| 112 | * I am not so sure anymore he was right. |
| 113 | */ |
| 114 | |
| 115 | for(irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) { |
| 116 | u8 int_pin=0, int_line=0; |
| 117 | |
| 118 | if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI) |
| 119 | continue; |
| 120 | |
| 121 | int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); |
| 122 | |
| 123 | switch (int_pin) { |
| 124 | case 1: /* INTA# */ int_line = config->pirqa_routing; break; |
| 125 | case 2: /* INTB# */ int_line = config->pirqb_routing; break; |
| 126 | case 3: /* INTC# */ int_line = config->pirqc_routing; break; |
| 127 | case 4: /* INTD# */ int_line = config->pirqd_routing; break; |
| 128 | } |
| 129 | |
| 130 | if (!int_line) |
| 131 | continue; |
| 132 | |
| 133 | pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line); |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | static void i82801ix_gpi_routing(device_t dev) |
| 138 | { |
| 139 | /* Get the chip configuration */ |
| 140 | config_t *config = dev->chip_info; |
| 141 | u32 reg32 = 0; |
| 142 | |
| 143 | /* An array would be much nicer here, or some |
| 144 | * other method of doing this. |
| 145 | */ |
| 146 | reg32 |= (config->gpi0_routing & 0x03) << 0; |
| 147 | reg32 |= (config->gpi1_routing & 0x03) << 2; |
| 148 | reg32 |= (config->gpi2_routing & 0x03) << 4; |
| 149 | reg32 |= (config->gpi3_routing & 0x03) << 6; |
| 150 | reg32 |= (config->gpi4_routing & 0x03) << 8; |
| 151 | reg32 |= (config->gpi5_routing & 0x03) << 10; |
| 152 | reg32 |= (config->gpi6_routing & 0x03) << 12; |
| 153 | reg32 |= (config->gpi7_routing & 0x03) << 14; |
| 154 | reg32 |= (config->gpi8_routing & 0x03) << 16; |
| 155 | reg32 |= (config->gpi9_routing & 0x03) << 18; |
| 156 | reg32 |= (config->gpi10_routing & 0x03) << 20; |
| 157 | reg32 |= (config->gpi11_routing & 0x03) << 22; |
| 158 | reg32 |= (config->gpi12_routing & 0x03) << 24; |
| 159 | reg32 |= (config->gpi13_routing & 0x03) << 26; |
| 160 | reg32 |= (config->gpi14_routing & 0x03) << 28; |
| 161 | reg32 |= (config->gpi15_routing & 0x03) << 30; |
| 162 | |
| 163 | pci_write_config32(dev, D31F0_GPIO_ROUT, reg32); |
| 164 | } |
| 165 | |
| 166 | static void i82801ix_power_options(device_t dev) |
| 167 | { |
| 168 | u8 reg8; |
| 169 | u16 reg16, pmbase; |
| 170 | u32 reg32; |
| 171 | const char *state; |
| 172 | /* Get the chip configuration */ |
| 173 | config_t *config = dev->chip_info; |
| 174 | |
| 175 | int pwr_on=CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL; |
| 176 | int nmi_option; |
| 177 | |
| 178 | /* BIOS must program... */ |
| 179 | reg32 = pci_read_config32(dev, 0xac); |
| 180 | pci_write_config32(dev, 0xac, reg32 | (1 << 30) | (3 << 8)); |
| 181 | |
| 182 | /* Which state do we want to goto after g3 (power restored)? |
| 183 | * 0 == S0 Full On |
| 184 | * 1 == S5 Soft Off |
| 185 | * |
| 186 | * If the option is not existent (Laptops), use MAINBOARD_POWER_ON. |
| 187 | */ |
Alexandru Gagniuc | 72dccce | 2013-11-23 19:22:53 -0600 | [diff] [blame] | 188 | if (get_option(&pwr_on, "power_on_after_fail") != CB_SUCCESS) |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 189 | pwr_on = MAINBOARD_POWER_ON; |
| 190 | |
| 191 | reg8 = pci_read_config8(dev, D31F0_GEN_PMCON_3); |
| 192 | reg8 &= 0xfe; |
| 193 | switch (pwr_on) { |
| 194 | case MAINBOARD_POWER_OFF: |
| 195 | reg8 |= 1; |
| 196 | state = "off"; |
| 197 | break; |
| 198 | case MAINBOARD_POWER_ON: |
| 199 | reg8 &= ~1; |
| 200 | state = "on"; |
| 201 | break; |
| 202 | case MAINBOARD_POWER_KEEP: |
| 203 | reg8 &= ~1; |
| 204 | state = "state keep"; |
| 205 | break; |
| 206 | default: |
| 207 | state = "undefined"; |
| 208 | } |
| 209 | |
| 210 | reg8 |= (3 << 4); /* avoid #S4 assertions */ |
| 211 | reg8 &= ~(1 << 3); /* minimum asssertion is 1 to 2 RTCCLK */ |
| 212 | |
| 213 | pci_write_config8(dev, D31F0_GEN_PMCON_3, reg8); |
| 214 | printk(BIOS_INFO, "Set power %s after power failure.\n", state); |
| 215 | |
| 216 | /* Set up NMI on errors. */ |
| 217 | reg8 = inb(0x61); |
| 218 | reg8 &= 0x0f; /* Higher Nibble must be 0 */ |
| 219 | reg8 &= ~(1 << 3); /* IOCHK# NMI Enable */ |
| 220 | // reg8 &= ~(1 << 2); /* PCI SERR# Enable */ |
| 221 | reg8 |= (1 << 2); /* PCI SERR# Disable for now */ |
| 222 | outb(reg8, 0x61); |
| 223 | |
| 224 | reg8 = inb(0x74); /* Read from 0x74 as 0x70 is write only. */ |
| 225 | nmi_option = NMI_OFF; |
| 226 | get_option(&nmi_option, "nmi"); |
| 227 | if (nmi_option) { |
| 228 | printk(BIOS_INFO, "NMI sources enabled.\n"); |
| 229 | reg8 &= ~(1 << 7); /* Set NMI. */ |
| 230 | } else { |
| 231 | printk(BIOS_INFO, "NMI sources disabled.\n"); |
| 232 | reg8 |= ( 1 << 7); /* Can't mask NMI from PCI-E and NMI_NOW */ |
| 233 | } |
| 234 | outb(reg8, 0x70); |
| 235 | |
| 236 | /* Enable CPU_SLP# and Intel Speedstep, set SMI# rate down */ |
| 237 | reg16 = pci_read_config16(dev, D31F0_GEN_PMCON_1); |
| 238 | reg16 &= ~(3 << 0); // SMI# rate 1 minute |
| 239 | reg16 |= (1 << 2); // CLKRUN_EN - Mobile/Ultra only |
| 240 | reg16 |= (1 << 3); // Speedstep Enable - Mobile/Ultra only |
| 241 | reg16 |= (1 << 5); // CPUSLP_EN Desktop only |
| 242 | |
| 243 | if (config->c4onc3_enable) |
| 244 | reg16 |= (1 << 7); |
| 245 | |
| 246 | // another laptop wants this? |
| 247 | // reg16 &= ~(1 << 10); // BIOS_PCI_EXP_EN - Desktop/Mobile only |
| 248 | reg16 |= (1 << 10); // BIOS_PCI_EXP_EN - Desktop/Mobile only |
| 249 | #if DEBUG_PERIODIC_SMIS |
| 250 | /* Set DEBUG_PERIODIC_SMIS in i82801ix.h to debug using |
| 251 | * periodic SMIs. |
| 252 | */ |
| 253 | reg16 |= (3 << 0); // Periodic SMI every 8s |
| 254 | #endif |
| 255 | if (config->c5_enable) |
| 256 | reg16 |= (1 << 11); /* Enable C5, C6 and PMSYNC# */ |
| 257 | pci_write_config16(dev, D31F0_GEN_PMCON_1, reg16); |
| 258 | |
| 259 | /* Set exit timings for C5/C6. */ |
| 260 | if (config->c5_enable) { |
| 261 | reg8 = pci_read_config8(dev, D31F0_C5_EXIT_TIMING); |
| 262 | reg8 &= ~((7 << 3) | (7 << 0)); |
| 263 | if (config->c6_enable) |
| 264 | reg8 |= (5 << 3) | (3 << 0); /* 38-44us PMSYNC# to STPCLK#, |
| 265 | 95-102us DPRSTP# to STP_CPU# */ |
| 266 | else |
| 267 | reg8 |= (0 << 3) | (1 << 0); /* 16-17us PMSYNC# to STPCLK#, |
| 268 | 34-40us DPRSTP# to STP_CPU# */ |
| 269 | pci_write_config8(dev, D31F0_C5_EXIT_TIMING, reg8); |
| 270 | } |
| 271 | |
| 272 | // Set the board's GPI routing. |
| 273 | i82801ix_gpi_routing(dev); |
| 274 | |
| 275 | pmbase = pci_read_config16(dev, 0x40) & 0xfffe; |
| 276 | |
| 277 | outl(config->gpe0_en, pmbase + 0x28); |
| 278 | outw(config->alt_gp_smi_en, pmbase + 0x38); |
| 279 | |
| 280 | /* Set up power management block and determine sleep mode */ |
| 281 | reg16 = inw(pmbase + 0x00); /* PM1_STS */ |
| 282 | outw(reg16, pmbase + 0x00); /* Clear status bits. At least bit11 (power |
| 283 | button override) must be cleared or SCI |
| 284 | will be constantly fired and OSPM must |
| 285 | not know about it (ACPI spec says to |
| 286 | ignore the bit). */ |
| 287 | reg32 = inl(pmbase + 0x04); // PM1_CNT |
| 288 | reg32 &= ~(7 << 10); // SLP_TYP |
| 289 | outl(reg32, pmbase + 0x04); |
| 290 | |
| 291 | /* Set duty cycle for hardware throttling (defaults to 0x0: 50%). */ |
| 292 | reg32 = inl(pmbase + 0x10); |
| 293 | reg32 &= ~(7 << 5); |
| 294 | reg32 |= (config->throttle_duty & 7) << 5; |
| 295 | outl(reg32, pmbase + 0x10); |
| 296 | } |
| 297 | |
| 298 | static void i82801ix_configure_cstates(device_t dev) |
| 299 | { |
| 300 | u8 reg8; |
| 301 | |
| 302 | reg8 = pci_read_config8(dev, D31F0_CxSTATE_CNF); |
| 303 | reg8 |= (1 << 4) | (1 << 3) | (1 << 2); // Enable Popup & Popdown |
| 304 | pci_write_config8(dev, D31F0_CxSTATE_CNF, reg8); |
| 305 | |
| 306 | // Set Deeper Sleep configuration to recommended values |
| 307 | reg8 = pci_read_config8(dev, D31F0_C4TIMING_CNT); |
| 308 | reg8 &= 0xf0; |
| 309 | reg8 |= (2 << 2); // Deeper Sleep to Stop CPU: 34-40us |
| 310 | reg8 |= (2 << 0); // Deeper Sleep to Sleep: 15us |
| 311 | pci_write_config8(dev, D31F0_C4TIMING_CNT, reg8); |
| 312 | |
| 313 | /* We could enable slow-C4 exit here, if someone needs it? */ |
| 314 | } |
| 315 | |
| 316 | static void i82801ix_rtc_init(struct device *dev) |
| 317 | { |
| 318 | u8 reg8; |
| 319 | int rtc_failed; |
| 320 | |
| 321 | reg8 = pci_read_config8(dev, D31F0_GEN_PMCON_3); |
| 322 | rtc_failed = reg8 & RTC_BATTERY_DEAD; |
| 323 | if (rtc_failed) { |
| 324 | reg8 &= ~RTC_BATTERY_DEAD; |
| 325 | pci_write_config8(dev, D31F0_GEN_PMCON_3, reg8); |
| 326 | } |
| 327 | printk(BIOS_DEBUG, "rtc_failed = 0x%x\n", rtc_failed); |
| 328 | |
Gabe Black | b3f08c6 | 2014-04-30 17:12:25 -0700 | [diff] [blame] | 329 | cmos_init(rtc_failed); |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | static void enable_hpet(void) |
| 333 | { |
| 334 | u32 reg32; |
| 335 | |
| 336 | /* Move HPET to default address 0xfed00000 and enable it */ |
| 337 | reg32 = RCBA32(RCBA_HPTC); |
| 338 | reg32 |= (1 << 7); // HPET Address Enable |
| 339 | reg32 &= ~(3 << 0); |
| 340 | RCBA32(RCBA_HPTC) = reg32; |
| 341 | } |
| 342 | |
| 343 | static void enable_clock_gating(void) |
| 344 | { |
| 345 | u32 reg32; |
| 346 | |
| 347 | /* Enable DMI dynamic clock gating. */ |
| 348 | RCBA32(RCBA_DMIC) |= 3; |
| 349 | |
| 350 | /* Enable Clock Gating for most devices. */ |
| 351 | reg32 = RCBA32(RCBA_CG); |
| 352 | reg32 |= (1 << 31); /* LPC dynamic clock gating */ |
| 353 | /* USB UHCI dynamic clock gating: */ |
| 354 | reg32 |= (1 << 29) | (1 << 28); |
| 355 | /* SATA dynamic clock gating [0-3]: */ |
| 356 | reg32 |= (1 << 27) | (1 << 26) | (1 << 25) | (1 << 24); |
| 357 | reg32 |= (1 << 23); /* LAN static clock gating (if LAN disabled) */ |
| 358 | reg32 |= (1 << 22); /* HD audio dynamic clock gating */ |
| 359 | reg32 &= ~(1 << 21); /* No HD audio static clock gating */ |
| 360 | reg32 &= ~(1 << 20); /* No USB EHCI static clock gating */ |
| 361 | reg32 |= (1 << 19); /* USB EHCI dynamic clock gating */ |
| 362 | /* More SATA dynamic clock gating [4-5]: */ |
| 363 | reg32 |= (1 << 18) | (1 << 17); |
| 364 | reg32 |= (1 << 16); /* PCI dynamic clock gating */ |
| 365 | /* PCIe, DMI dynamic clock gating: */ |
| 366 | reg32 |= (1 << 4) | (1 << 3) | (1 << 2) | (1 << 1); |
| 367 | reg32 |= (1 << 0); /* PCIe root port static clock gating */ |
| 368 | RCBA32(RCBA_CG) = reg32; |
| 369 | |
| 370 | /* Enable SPI dynamic clock gating. */ |
| 371 | RCBA32(0x38c0) |= 7; |
| 372 | } |
| 373 | |
| 374 | #if CONFIG_HAVE_SMI_HANDLER |
| 375 | static void i82801ix_lock_smm(struct device *dev) |
| 376 | { |
| 377 | #if TEST_SMM_FLASH_LOCKDOWN |
| 378 | u8 reg8; |
| 379 | #endif |
| 380 | |
Kyösti Mälkki | c3ed886 | 2014-06-19 19:50:51 +0300 | [diff] [blame] | 381 | if (!acpi_is_wakeup_s3()) { |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 382 | #if ENABLE_ACPI_MODE_IN_COREBOOT |
| 383 | printk(BIOS_DEBUG, "Enabling ACPI via APMC:\n"); |
| 384 | outb(APM_CNT_ACPI_ENABLE, APM_CNT); // Enable ACPI mode |
| 385 | printk(BIOS_DEBUG, "done.\n"); |
| 386 | #else |
| 387 | printk(BIOS_DEBUG, "Disabling ACPI via APMC:\n"); |
| 388 | outb(APM_CNT_ACPI_DISABLE, APM_CNT); // Disable ACPI mode |
| 389 | printk(BIOS_DEBUG, "done.\n"); |
| 390 | #endif |
| 391 | } else { |
| 392 | printk(BIOS_DEBUG, "S3 wakeup, enabling ACPI via APMC\n"); |
| 393 | outb(APM_CNT_ACPI_ENABLE, APM_CNT); |
| 394 | } |
| 395 | /* Don't allow evil boot loaders, kernels, or |
| 396 | * userspace applications to deceive us: |
| 397 | */ |
| 398 | smm_lock(); |
| 399 | |
| 400 | #if TEST_SMM_FLASH_LOCKDOWN |
| 401 | /* Now try this: */ |
| 402 | printk(BIOS_DEBUG, "Locking BIOS to RO... "); |
| 403 | reg8 = pci_read_config8(dev, 0xdc); /* BIOS_CNTL */ |
| 404 | printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off", |
| 405 | (reg8&1)?"rw":"ro"); |
| 406 | reg8 &= ~(1 << 0); /* clear BIOSWE */ |
| 407 | pci_write_config8(dev, 0xdc, reg8); |
| 408 | reg8 |= (1 << 1); /* set BLE */ |
| 409 | pci_write_config8(dev, 0xdc, reg8); |
| 410 | printk(BIOS_DEBUG, "ok.\n"); |
| 411 | reg8 = pci_read_config8(dev, 0xdc); /* BIOS_CNTL */ |
| 412 | printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off", |
| 413 | (reg8&1)?"rw":"ro"); |
| 414 | |
| 415 | printk(BIOS_DEBUG, "Writing:\n"); |
| 416 | *(volatile u8 *)0xfff00000 = 0x00; |
| 417 | printk(BIOS_DEBUG, "Testing:\n"); |
| 418 | reg8 |= (1 << 0); /* set BIOSWE */ |
| 419 | pci_write_config8(dev, 0xdc, reg8); |
| 420 | |
| 421 | reg8 = pci_read_config8(dev, 0xdc); /* BIOS_CNTL */ |
| 422 | printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off", |
| 423 | (reg8&1)?"rw":"ro"); |
| 424 | printk(BIOS_DEBUG, "Done.\n"); |
| 425 | #endif |
| 426 | } |
| 427 | #endif |
| 428 | |
| 429 | static void lpc_init(struct device *dev) |
| 430 | { |
| 431 | printk(BIOS_DEBUG, "i82801ix: lpc_init\n"); |
| 432 | |
| 433 | /* Set the value for PCI command register. */ |
| 434 | pci_write_config16(dev, PCI_COMMAND, 0x000f); |
| 435 | |
| 436 | /* IO APIC initialization. */ |
| 437 | i82801ix_enable_apic(dev); |
| 438 | |
| 439 | i82801ix_enable_serial_irqs(dev); |
| 440 | |
| 441 | /* Setup the PIRQ. */ |
| 442 | i82801ix_pirq_init(dev); |
| 443 | |
| 444 | /* Setup power options. */ |
| 445 | i82801ix_power_options(dev); |
| 446 | |
| 447 | /* Configure Cx state registers */ |
| 448 | if (LPC_IS_MOBILE(dev)) |
| 449 | i82801ix_configure_cstates(dev); |
| 450 | |
| 451 | /* Initialize the real time clock. */ |
| 452 | i82801ix_rtc_init(dev); |
| 453 | |
| 454 | /* Initialize ISA DMA. */ |
| 455 | isa_dma_init(); |
| 456 | |
| 457 | /* Initialize the High Precision Event Timers, if present. */ |
| 458 | enable_hpet(); |
| 459 | |
| 460 | /* Initialize Clock Gating */ |
| 461 | enable_clock_gating(); |
| 462 | |
| 463 | setup_i8259(); |
| 464 | |
| 465 | /* The OS should do this? */ |
| 466 | /* Interrupt 9 should be level triggered (SCI) */ |
| 467 | i8259_configure_irq_trigger(9, 1); |
| 468 | |
| 469 | #if CONFIG_HAVE_SMI_HANDLER |
| 470 | i82801ix_lock_smm(dev); |
| 471 | #endif |
| 472 | } |
| 473 | |
| 474 | static void i82801ix_lpc_read_resources(device_t dev) |
| 475 | { |
| 476 | /* |
| 477 | * I/O Resources |
| 478 | * |
| 479 | * 0x0000 - 0x000f....ISA DMA |
| 480 | * 0x0010 - 0x001f....ISA DMA aliases |
| 481 | * 0x0020 ~ 0x003d....PIC |
| 482 | * 0x002e - 0x002f....Maybe Super I/O |
| 483 | * 0x0040 - 0x0043....Timer |
| 484 | * 0x004e - 0x004f....Maybe Super I/O |
| 485 | * 0x0050 - 0x0053....Timer aliases |
| 486 | * 0x0061.............NMI_SC |
| 487 | * 0x0070.............NMI_EN (readable in alternative access mode) |
| 488 | * 0x0070 - 0x0077....RTC |
| 489 | * 0x0080 - 0x008f....ISA DMA |
| 490 | * 0x0090 ~ 0x009f....ISA DMA aliases |
| 491 | * 0x0092.............Fast A20 and Init |
| 492 | * 0x00a0 ~ 0x00bd....PIC |
| 493 | * 0x00b2 - 0x00b3....APM |
| 494 | * 0x00c0 ~ 0x00de....ISA DMA |
| 495 | * 0x00c1 ~ 0x00df....ISA DMA aliases |
| 496 | * 0x00f0.............Coprocessor Error |
| 497 | * (0x0400-0x041f)....SMBus (SMBUS_IO_BASE, during raminit) |
| 498 | * 0x04d0 - 0x04d1....PIC |
| 499 | * 0x0500 - 0x057f....PM (DEFAULT_PMBASE) |
| 500 | * 0x0580 - 0x05bf....SB GPIO (DEFAULT_GPIOBASE) |
| 501 | * 0x05c0 - 0x05ff....SB GPIO cont. (mobile only) |
| 502 | * 0x0cf8 - 0x0cff....PCI |
| 503 | * 0x0cf9.............Reset Control |
| 504 | */ |
| 505 | |
| 506 | struct resource *res; |
| 507 | |
| 508 | /* Get the normal PCI resources of this device. */ |
| 509 | pci_dev_read_resources(dev); |
| 510 | |
| 511 | /* Add an extra subtractive resource for both memory and I/O. */ |
| 512 | res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0)); |
| 513 | res->base = 0; |
| 514 | res->size = 0x1000; |
| 515 | res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | |
| 516 | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| 517 | |
| 518 | res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0)); |
| 519 | res->base = 0xff800000; |
| 520 | res->size = 0x00800000; /* 8 MB for flash */ |
| 521 | res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | |
| 522 | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| 523 | |
| 524 | res = new_resource(dev, 3); /* IOAPIC */ |
| 525 | res->base = IO_APIC_ADDR; |
| 526 | res->size = 0x00001000; |
| 527 | res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; |
| 528 | } |
| 529 | |
| 530 | static void set_subsystem(device_t dev, unsigned vendor, unsigned device) |
| 531 | { |
| 532 | if (!vendor || !device) { |
| 533 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 534 | pci_read_config32(dev, PCI_VENDOR_ID)); |
| 535 | } else { |
| 536 | pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, |
| 537 | ((device & 0xffff) << 16) | (vendor & 0xffff)); |
| 538 | } |
| 539 | } |
| 540 | |
Vladimir Serbinenko | 33769a5 | 2014-08-30 22:39:20 +0200 | [diff] [blame] | 541 | #if IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES) |
| 542 | static void southbridge_inject_dsdt(void) |
| 543 | { |
| 544 | global_nvs_t *gnvs = cbmem_add (CBMEM_ID_ACPI_GNVS, sizeof (*gnvs)); |
| 545 | |
| 546 | if (gnvs) { |
Vladimir Serbinenko | 33769a5 | 2014-08-30 22:39:20 +0200 | [diff] [blame] | 547 | memset(gnvs, 0, sizeof (*gnvs)); |
| 548 | acpi_create_gnvs(gnvs); |
| 549 | /* And tell SMI about it */ |
| 550 | smm_setup_structures(gnvs, NULL, NULL); |
| 551 | |
| 552 | /* Add it to SSDT. */ |
Vladimir Serbinenko | f7c75db | 2014-11-04 21:21:06 +0100 | [diff] [blame] | 553 | acpigen_write_scope("\\"); |
| 554 | acpigen_write_name_dword("NVSA", (u32) gnvs); |
| 555 | acpigen_pop_len(); |
Vladimir Serbinenko | 33769a5 | 2014-08-30 22:39:20 +0200 | [diff] [blame] | 556 | } |
| 557 | } |
| 558 | #endif |
| 559 | |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 560 | static struct pci_operations pci_ops = { |
| 561 | .set_subsystem = set_subsystem, |
| 562 | }; |
| 563 | |
| 564 | static struct device_operations device_ops = { |
| 565 | .read_resources = i82801ix_lpc_read_resources, |
| 566 | .set_resources = pci_dev_set_resources, |
| 567 | .enable_resources = pci_dev_enable_resources, |
Vladimir Serbinenko | 33769a5 | 2014-08-30 22:39:20 +0200 | [diff] [blame] | 568 | #if IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES) |
| 569 | .acpi_inject_dsdt_generator = southbridge_inject_dsdt, |
| 570 | .write_acpi_tables = acpi_write_hpet, |
| 571 | #endif |
Patrick Georgi | e72a8a3 | 2012-11-06 11:05:09 +0100 | [diff] [blame] | 572 | .init = lpc_init, |
| 573 | .scan_bus = scan_static_bus, |
| 574 | .ops_pci = &pci_ops, |
| 575 | }; |
| 576 | |
| 577 | static const unsigned short pci_device_ids[] = { |
| 578 | 0x2912, /* ICH9DH */ |
| 579 | 0x2914, /* ICH9DO */ |
| 580 | 0x2916, /* ICH9R */ |
| 581 | 0x2918, /* ICH9 */ |
| 582 | 0x2917, /* ICH9M-E */ |
| 583 | 0x2919, /* ICH9M */ |
| 584 | 0 |
| 585 | }; |
| 586 | |
| 587 | static const struct pci_driver ich9_lpc __pci_driver = { |
| 588 | .ops = &device_ops, |
| 589 | .vendor = PCI_VENDOR_ID_INTEL, |
| 590 | .devices = pci_device_ids, |
| 591 | }; |