Angel Pons | c3f58f6 | 2020-04-05 15:46:41 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 2 | |
| 3 | #include <stdint.h> |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 4 | #include <acpi/acpi_gnvs.h> |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 5 | #include <arch/io.h> |
Kyösti Mälkki | f1b58b7 | 2019-03-01 13:43:02 +0200 | [diff] [blame] | 6 | #include <device/pci_ops.h> |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 7 | #include <console/console.h> |
| 8 | #include <cpu/x86/cache.h> |
| 9 | #include <cpu/x86/smm.h> |
Kyösti Mälkki | e31ec29 | 2019-08-10 17:27:01 +0300 | [diff] [blame] | 10 | #include <cpu/intel/em64t100_save_state.h> |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 11 | #include <device/pci_def.h> |
| 12 | #include <elog.h> |
Patrick Georgi | 546953c | 2014-11-29 10:38:17 +0100 | [diff] [blame] | 13 | #include <halt.h> |
Aaron Durbin | 2088571 | 2014-02-09 16:04:06 -0600 | [diff] [blame] | 14 | #include <spi-generic.h> |
Matt DeVillier | bd6bdc5 | 2018-12-25 21:54:52 -0600 | [diff] [blame] | 15 | #include <smmstore.h> |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 16 | |
Marc Jones | 9afc5c0 | 2014-09-24 10:53:48 -0600 | [diff] [blame] | 17 | #include <soc/iosf.h> |
Julius Werner | 18ea2d3 | 2014-10-07 16:42:17 -0700 | [diff] [blame] | 18 | #include <soc/pci_devs.h> |
Angel Pons | b5320b2 | 2020-07-07 18:27:30 +0200 | [diff] [blame] | 19 | #include <soc/pm.h> |
Julius Werner | 18ea2d3 | 2014-10-07 16:42:17 -0700 | [diff] [blame] | 20 | #include <soc/nvs.h> |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 21 | #include <soc/device_nvs.h> |
| 22 | |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 23 | int southbridge_io_trap_handler(int smif) |
| 24 | { |
| 25 | switch (smif) { |
| 26 | case 0x32: |
| 27 | printk(BIOS_DEBUG, "OS Init\n"); |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 28 | /* |
| 29 | * gnvs->smif: |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 30 | * On success, the IO Trap Handler returns 0 |
| 31 | * On failure, the IO Trap Handler returns a value != 0 |
| 32 | */ |
| 33 | gnvs->smif = 0; |
| 34 | return 1; /* IO trap handled */ |
| 35 | } |
| 36 | |
| 37 | /* Not handled */ |
| 38 | return 0; |
| 39 | } |
| 40 | |
| 41 | void southbridge_smi_set_eos(void) |
| 42 | { |
| 43 | enable_smi(EOS); |
| 44 | } |
| 45 | |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 46 | static void busmaster_disable_on_bus(int bus) |
| 47 | { |
| 48 | int slot, func; |
| 49 | unsigned int val; |
| 50 | unsigned char hdr; |
| 51 | |
| 52 | for (slot = 0; slot < 0x20; slot++) { |
| 53 | for (func = 0; func < 8; func++) { |
Elyes HAOUAS | 6468d87d | 2020-04-29 10:22:42 +0200 | [diff] [blame] | 54 | u16 reg16; |
Elyes HAOUAS | c8a649c | 2018-06-10 23:36:44 +0200 | [diff] [blame] | 55 | pci_devfn_t dev = PCI_DEV(bus, slot, func); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 56 | |
| 57 | val = pci_read_config32(dev, PCI_VENDOR_ID); |
| 58 | |
| 59 | if (val == 0xffffffff || val == 0x00000000 || |
| 60 | val == 0x0000ffff || val == 0xffff0000) |
| 61 | continue; |
| 62 | |
| 63 | /* Disable Bus Mastering for this one device */ |
Elyes HAOUAS | 6468d87d | 2020-04-29 10:22:42 +0200 | [diff] [blame] | 64 | reg16 = pci_read_config16(dev, PCI_COMMAND); |
| 65 | reg16 &= ~PCI_COMMAND_MASTER; |
| 66 | pci_write_config16(dev, PCI_COMMAND, reg16); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 67 | |
| 68 | /* If this is a bridge, then follow it. */ |
| 69 | hdr = pci_read_config8(dev, PCI_HEADER_TYPE); |
| 70 | hdr &= 0x7f; |
Angel Pons | 5bcd35d | 2020-07-07 18:15:47 +0200 | [diff] [blame] | 71 | if (hdr == PCI_HEADER_TYPE_BRIDGE || hdr == PCI_HEADER_TYPE_CARDBUS) { |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 72 | unsigned int buses; |
| 73 | buses = pci_read_config32(dev, PCI_PRIMARY_BUS); |
| 74 | busmaster_disable_on_bus((buses >> 8) & 0xff); |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | static void southbridge_smi_sleep(void) |
| 81 | { |
| 82 | uint32_t reg32; |
| 83 | uint8_t slp_typ; |
| 84 | uint16_t pmbase = get_pmbase(); |
| 85 | |
| 86 | /* First, disable further SMIs */ |
| 87 | disable_smi(SLP_SMI_EN); |
| 88 | |
| 89 | /* Figure out SLP_TYP */ |
| 90 | reg32 = inl(pmbase + PM1_CNT); |
| 91 | printk(BIOS_SPEW, "SMI#: SLP = 0x%08x\n", reg32); |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 92 | slp_typ = acpi_sleep_from_pm1(reg32); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 93 | |
| 94 | /* Do any mainboard sleep handling */ |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 95 | mainboard_smi_sleep(slp_typ); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 96 | |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 97 | /* Log S3, S4, and S5 entry */ |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 98 | if (slp_typ >= ACPI_S3) |
Kyösti Mälkki | 9dd1a12 | 2019-11-06 11:04:27 +0200 | [diff] [blame] | 99 | elog_gsmi_add_event_byte(ELOG_TYPE_ACPI_ENTER, slp_typ); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 100 | |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 101 | /* Next, do the deed. */ |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 102 | switch (slp_typ) { |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 103 | case ACPI_S0: |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 104 | printk(BIOS_DEBUG, "SMI#: Entering S0 (On)\n"); |
| 105 | break; |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 106 | case ACPI_S1: |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 107 | printk(BIOS_DEBUG, "SMI#: Entering S1 (Assert STPCLK#)\n"); |
| 108 | break; |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 109 | case ACPI_S3: |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 110 | printk(BIOS_DEBUG, "SMI#: Entering S3 (Suspend-To-RAM)\n"); |
| 111 | |
| 112 | /* Invalidate the cache before going to S3 */ |
| 113 | wbinvd(); |
| 114 | break; |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 115 | case ACPI_S4: |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 116 | printk(BIOS_DEBUG, "SMI#: Entering S4 (Suspend-To-Disk)\n"); |
| 117 | break; |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 118 | case ACPI_S5: |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 119 | printk(BIOS_DEBUG, "SMI#: Entering S5 (Soft Power off)\n"); |
| 120 | |
| 121 | /* Disable all GPE */ |
| 122 | disable_all_gpe(); |
| 123 | |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 124 | /* Also iterates over all bridges on bus 0 */ |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 125 | busmaster_disable_on_bus(0); |
| 126 | break; |
| 127 | default: |
| 128 | printk(BIOS_DEBUG, "SMI#: ERROR: SLP_TYP reserved\n"); |
| 129 | break; |
| 130 | } |
| 131 | |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 132 | /* |
| 133 | * Write back to the SLP register to cause the originally intended event again. |
| 134 | * We need to set BIT13 (SLP_EN) though to make the sleep happen. |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 135 | */ |
| 136 | enable_pm1_control(SLP_EN); |
| 137 | |
| 138 | /* Make sure to stop executing code here for S3/S4/S5 */ |
Aaron Durbin | f5cfaa3 | 2016-07-13 23:20:07 -0500 | [diff] [blame] | 139 | if (slp_typ >= ACPI_S3) |
Patrick Georgi | 546953c | 2014-11-29 10:38:17 +0100 | [diff] [blame] | 140 | halt(); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 141 | |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 142 | /* |
| 143 | * In most sleep states, the code flow of this function ends at |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 144 | * the line above. However, if we entered sleep state S1 and wake |
| 145 | * up again, we will continue to execute code in this function. |
| 146 | */ |
| 147 | reg32 = inl(pmbase + PM1_CNT); |
| 148 | if (reg32 & SCI_EN) { |
| 149 | /* The OS is not an ACPI OS, so we set the state to S0 */ |
| 150 | disable_pm1_control(SLP_EN | SLP_TYP); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | /* |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 155 | * Look for Synchronous IO SMI and use save state from that core in case |
| 156 | * we are not running on the same core that initiated the IO transaction. |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 157 | */ |
| 158 | static em64t100_smm_state_save_area_t *smi_apmc_find_state_save(uint8_t cmd) |
| 159 | { |
| 160 | em64t100_smm_state_save_area_t *state; |
| 161 | int node; |
| 162 | |
| 163 | /* Check all nodes looking for the one that issued the IO */ |
| 164 | for (node = 0; node < CONFIG_MAX_CPUS; node++) { |
| 165 | state = smm_get_save_state(node); |
| 166 | |
| 167 | /* Check for Synchronous IO (bit0==1) */ |
| 168 | if (!(state->io_misc_info & (1 << 0))) |
| 169 | continue; |
| 170 | |
| 171 | /* Make sure it was a write (bit4==0) */ |
| 172 | if (state->io_misc_info & (1 << 4)) |
| 173 | continue; |
| 174 | |
| 175 | /* Check for APMC IO port */ |
| 176 | if (((state->io_misc_info >> 16) & 0xff) != APM_CNT) |
| 177 | continue; |
| 178 | |
| 179 | /* Check AX against the requested command */ |
| 180 | if ((state->rax & 0xff) != cmd) |
| 181 | continue; |
| 182 | |
| 183 | return state; |
| 184 | } |
| 185 | |
| 186 | return NULL; |
| 187 | } |
| 188 | |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 189 | static void southbridge_smi_gsmi(void) |
| 190 | { |
| 191 | u32 *ret, *param; |
| 192 | uint8_t sub_command; |
Angel Pons | 5bcd35d | 2020-07-07 18:15:47 +0200 | [diff] [blame] | 193 | em64t100_smm_state_save_area_t *io_smi = smi_apmc_find_state_save(APM_CNT_ELOG_GSMI); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 194 | |
| 195 | if (!io_smi) |
| 196 | return; |
| 197 | |
| 198 | /* Command and return value in EAX */ |
Angel Pons | 5bcd35d | 2020-07-07 18:15:47 +0200 | [diff] [blame] | 199 | ret = (u32 *)&io_smi->rax; |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 200 | sub_command = (uint8_t)(*ret >> 8); |
| 201 | |
| 202 | /* Parameter buffer in EBX */ |
Angel Pons | 5bcd35d | 2020-07-07 18:15:47 +0200 | [diff] [blame] | 203 | param = (u32 *)&io_smi->rbx; |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 204 | |
| 205 | /* drivers/elog/gsmi.c */ |
| 206 | *ret = gsmi_exec(sub_command, param); |
| 207 | } |
Aaron Durbin | 2088571 | 2014-02-09 16:04:06 -0600 | [diff] [blame] | 208 | |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 209 | void *acpi_get_device_nvs(void) |
| 210 | { |
Kyösti Mälkki | 4bd9187 | 2021-03-16 19:02:26 +0200 | [diff] [blame] | 211 | return (u8 *)gnvs + ALIGN_UP(sizeof(struct global_nvs), sizeof(uint64_t)); |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 212 | } |
| 213 | |
Marc Jones | 9afc5c0 | 2014-09-24 10:53:48 -0600 | [diff] [blame] | 214 | /* |
| 215 | * soc_legacy: A payload (Depthcharge) has indicated that the |
| 216 | * legacy payload (SeaBIOS) is being loaded. Switch devices that are |
| 217 | * in ACPI mode to PCI mode so that non-ACPI drivers may work. |
| 218 | * |
| 219 | */ |
| 220 | static void soc_legacy(void) |
| 221 | { |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 222 | struct device_nvs *dev_nvs = acpi_get_device_nvs(); |
Marc Jones | 9afc5c0 | 2014-09-24 10:53:48 -0600 | [diff] [blame] | 223 | u32 reg32; |
| 224 | |
| 225 | /* LPE Device */ |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 226 | if (dev_nvs->lpe_en) { |
Marc Jones | 9afc5c0 | 2014-09-24 10:53:48 -0600 | [diff] [blame] | 227 | reg32 = iosf_port58_read(LPE_PCICFGCTR1); |
| 228 | reg32 &= |
| 229 | ~(LPE_PCICFGCTR1_PCI_CFG_DIS | LPE_PCICFGCTR1_ACPI_INT_EN); |
| 230 | iosf_port58_write(LPE_PCICFGCTR1, reg32); |
| 231 | } |
| 232 | |
| 233 | /* SCC Devices */ |
| 234 | #define SCC_ACPI_MODE_DISABLE(name_) \ |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 235 | do { if (dev_nvs->scc_en[SCC_NVS_ ## name_]) { \ |
Marc Jones | 9afc5c0 | 2014-09-24 10:53:48 -0600 | [diff] [blame] | 236 | reg32 = iosf_scc_read(SCC_ ## name_ ## _CTL); \ |
| 237 | reg32 &= ~(SCC_CTL_PCI_CFG_DIS | SCC_CTL_ACPI_INT_EN); \ |
| 238 | iosf_scc_write(SCC_ ## name_ ## _CTL, reg32); \ |
| 239 | } } while (0) |
| 240 | |
| 241 | SCC_ACPI_MODE_DISABLE(MMC); |
| 242 | SCC_ACPI_MODE_DISABLE(SD); |
| 243 | SCC_ACPI_MODE_DISABLE(SDIO); |
| 244 | |
| 245 | /* LPSS Devices */ |
| 246 | #define LPSS_ACPI_MODE_DISABLE(name_) \ |
Kyösti Mälkki | 4abc731 | 2021-01-12 17:46:30 +0200 | [diff] [blame] | 247 | do { if (dev_nvs->lpss_en[LPSS_NVS_ ## name_]) { \ |
Marc Jones | 9afc5c0 | 2014-09-24 10:53:48 -0600 | [diff] [blame] | 248 | reg32 = iosf_lpss_read(LPSS_ ## name_ ## _CTL); \ |
| 249 | reg32 &= ~LPSS_CTL_PCI_CFG_DIS | ~LPSS_CTL_ACPI_INT_EN; \ |
| 250 | iosf_lpss_write(LPSS_ ## name_ ## _CTL, reg32); \ |
| 251 | } } while (0) |
| 252 | |
| 253 | LPSS_ACPI_MODE_DISABLE(SIO_DMA1); |
| 254 | LPSS_ACPI_MODE_DISABLE(I2C1); |
| 255 | LPSS_ACPI_MODE_DISABLE(I2C2); |
| 256 | LPSS_ACPI_MODE_DISABLE(I2C3); |
| 257 | LPSS_ACPI_MODE_DISABLE(I2C4); |
| 258 | LPSS_ACPI_MODE_DISABLE(I2C5); |
| 259 | LPSS_ACPI_MODE_DISABLE(I2C6); |
| 260 | LPSS_ACPI_MODE_DISABLE(I2C7); |
| 261 | LPSS_ACPI_MODE_DISABLE(SIO_DMA2); |
| 262 | LPSS_ACPI_MODE_DISABLE(PWM1); |
| 263 | LPSS_ACPI_MODE_DISABLE(PWM2); |
| 264 | LPSS_ACPI_MODE_DISABLE(HSUART1); |
| 265 | LPSS_ACPI_MODE_DISABLE(HSUART2); |
| 266 | LPSS_ACPI_MODE_DISABLE(SPI); |
| 267 | } |
| 268 | |
Matt DeVillier | bd6bdc5 | 2018-12-25 21:54:52 -0600 | [diff] [blame] | 269 | static void southbridge_smi_store(void) |
| 270 | { |
| 271 | u8 sub_command, ret; |
Angel Pons | 5bcd35d | 2020-07-07 18:15:47 +0200 | [diff] [blame] | 272 | em64t100_smm_state_save_area_t *io_smi = smi_apmc_find_state_save(APM_CNT_SMMSTORE); |
Matt DeVillier | bd6bdc5 | 2018-12-25 21:54:52 -0600 | [diff] [blame] | 273 | uint32_t reg_ebx; |
| 274 | |
| 275 | if (!io_smi) |
| 276 | return; |
| 277 | /* Command and return value in EAX */ |
| 278 | sub_command = (io_smi->rax >> 8) & 0xff; |
| 279 | |
| 280 | /* Parameter buffer in EBX */ |
| 281 | reg_ebx = io_smi->rbx; |
| 282 | |
| 283 | /* drivers/smmstore/smi.c */ |
| 284 | ret = smmstore_exec(sub_command, (void *)reg_ebx); |
| 285 | io_smi->rax = ret; |
| 286 | } |
| 287 | |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 288 | static void southbridge_smi_apmc(void) |
| 289 | { |
| 290 | uint8_t reg8; |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 291 | |
Kyösti Mälkki | 9a1620f | 2021-01-08 13:27:33 +0200 | [diff] [blame] | 292 | reg8 = apm_get_apmc(); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 293 | switch (reg8) { |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 294 | case APM_CNT_ACPI_DISABLE: |
| 295 | disable_pm1_control(SCI_EN); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 296 | break; |
| 297 | case APM_CNT_ACPI_ENABLE: |
| 298 | enable_pm1_control(SCI_EN); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 299 | break; |
Patrick Georgi | d61839c | 2018-12-03 16:10:33 +0100 | [diff] [blame] | 300 | case APM_CNT_ELOG_GSMI: |
Kyösti Mälkki | 9dd1a12 | 2019-11-06 11:04:27 +0200 | [diff] [blame] | 301 | if (CONFIG(ELOG_GSMI)) |
| 302 | southbridge_smi_gsmi(); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 303 | break; |
Marc Jones | 9afc5c0 | 2014-09-24 10:53:48 -0600 | [diff] [blame] | 304 | case APM_CNT_LEGACY: |
| 305 | soc_legacy(); |
| 306 | break; |
Matt DeVillier | bd6bdc5 | 2018-12-25 21:54:52 -0600 | [diff] [blame] | 307 | case APM_CNT_SMMSTORE: |
| 308 | if (CONFIG(SMMSTORE)) |
| 309 | southbridge_smi_store(); |
| 310 | break; |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | mainboard_smi_apmc(reg8); |
| 314 | } |
| 315 | |
| 316 | static void southbridge_smi_pm1(void) |
| 317 | { |
| 318 | uint16_t pm1_sts = clear_pm1_status(); |
| 319 | |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 320 | /* While OSPM is not active, poweroff immediately on a power button event */ |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 321 | if (pm1_sts & PWRBTN_STS) { |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 322 | /* Power button pressed */ |
Kyösti Mälkki | 9dd1a12 | 2019-11-06 11:04:27 +0200 | [diff] [blame] | 323 | elog_gsmi_add_event(ELOG_TYPE_POWER_BUTTON); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 324 | disable_pm1_control(-1UL); |
Aaron Durbin | 9f83e87 | 2013-11-11 14:45:27 -0600 | [diff] [blame] | 325 | enable_pm1_control(SLP_EN | (SLP_TYP_S5 << SLP_TYP_SHIFT)); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 326 | } |
| 327 | } |
| 328 | |
| 329 | static void southbridge_smi_gpe0(void) |
| 330 | { |
| 331 | clear_gpe_status(); |
| 332 | } |
| 333 | |
| 334 | static void southbridge_smi_tco(void) |
| 335 | { |
| 336 | uint32_t tco_sts = clear_tco_status(); |
| 337 | |
| 338 | /* Any TCO event? */ |
| 339 | if (!tco_sts) |
| 340 | return; |
| 341 | |
| 342 | if (tco_sts & TCO_TIMEOUT) { /* TIMEOUT */ |
| 343 | /* Handle TCO timeout */ |
| 344 | printk(BIOS_DEBUG, "TCO Timeout.\n"); |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | static void southbridge_smi_periodic(void) |
| 349 | { |
| 350 | uint32_t reg32; |
| 351 | |
| 352 | reg32 = inl(get_pmbase() + SMI_EN); |
| 353 | |
| 354 | /* Are periodic SMIs enabled? */ |
| 355 | if ((reg32 & PERIODIC_EN) == 0) |
| 356 | return; |
| 357 | |
| 358 | printk(BIOS_DEBUG, "Periodic SMI.\n"); |
| 359 | } |
| 360 | |
| 361 | typedef void (*smi_handler_t)(void); |
| 362 | |
| 363 | static const smi_handler_t southbridge_smi[32] = { |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 364 | NULL, /* [0] reserved */ |
| 365 | NULL, /* [1] reserved */ |
| 366 | NULL, /* [2] BIOS_STS */ |
| 367 | NULL, /* [3] LEGACY_USB_STS */ |
| 368 | southbridge_smi_sleep, /* [4] SLP_SMI_STS */ |
| 369 | southbridge_smi_apmc, /* [5] APM_STS */ |
| 370 | NULL, /* [6] SWSMI_TMR_STS */ |
| 371 | NULL, /* [7] reserved */ |
| 372 | southbridge_smi_pm1, /* [8] PM1_STS */ |
| 373 | southbridge_smi_gpe0, /* [9] GPE0_STS */ |
| 374 | NULL, /* [10] reserved */ |
| 375 | NULL, /* [11] reserved */ |
| 376 | NULL, /* [12] reserved */ |
| 377 | southbridge_smi_tco, /* [13] TCO_STS */ |
| 378 | southbridge_smi_periodic, /* [14] PERIODIC_STS */ |
| 379 | NULL, /* [15] SERIRQ_SMI_STS */ |
| 380 | NULL, /* [16] SMBUS_SMI_STS */ |
| 381 | NULL, /* [17] LEGACY_USB2_STS */ |
| 382 | NULL, /* [18] INTEL_USB2_STS */ |
| 383 | NULL, /* [19] reserved */ |
| 384 | NULL, /* [20] PCI_EXP_SMI_STS */ |
| 385 | NULL, /* [21] reserved */ |
| 386 | NULL, /* [22] reserved */ |
| 387 | NULL, /* [23] reserved */ |
| 388 | NULL, /* [24] reserved */ |
| 389 | NULL, /* [25] reserved */ |
| 390 | NULL, /* [26] SPI_STS */ |
| 391 | NULL, /* [27] reserved */ |
| 392 | NULL, /* [28] PUNIT */ |
| 393 | NULL, /* [29] GUNIT */ |
| 394 | NULL, /* [30] reserved */ |
| 395 | NULL /* [31] reserved */ |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 396 | }; |
| 397 | |
| 398 | void southbridge_smi_handler(void) |
| 399 | { |
| 400 | int i; |
| 401 | uint32_t smi_sts; |
| 402 | |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 403 | /* |
| 404 | * We need to clear the SMI status registers, or we won't see what's |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 405 | * happening in the following calls. |
| 406 | */ |
| 407 | smi_sts = clear_smi_status(); |
| 408 | |
| 409 | /* Call SMI sub handler for each of the status bits */ |
| 410 | for (i = 0; i < ARRAY_SIZE(southbridge_smi); i++) { |
| 411 | if (!(smi_sts & (1 << i))) |
| 412 | continue; |
| 413 | |
| 414 | if (southbridge_smi[i] != NULL) { |
| 415 | southbridge_smi[i](); |
| 416 | } else { |
| 417 | printk(BIOS_DEBUG, |
Angel Pons | 5bcd35d | 2020-07-07 18:15:47 +0200 | [diff] [blame] | 418 | "SMI_STS[%d] occurred, but no handler available.\n", i); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 419 | } |
| 420 | } |
Aaron Durbin | 9f83e87 | 2013-11-11 14:45:27 -0600 | [diff] [blame] | 421 | |
Angel Pons | 26b49cc | 2020-07-07 17:17:51 +0200 | [diff] [blame] | 422 | /* |
| 423 | * The GPIO SMI events do not have a status bit in SMI_STS. Therefore, |
| 424 | * these events need to be cleared and checked unconditionally. |
| 425 | */ |
Aaron Durbin | 9f83e87 | 2013-11-11 14:45:27 -0600 | [diff] [blame] | 426 | mainboard_smi_gpi(clear_alt_status()); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 427 | } |