Jingle Hsu | e07ea4c | 2020-07-01 18:26:49 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | |
| 3 | /* |
| 4 | * Helper functions for dealing with power management registers |
| 5 | * and the differences between PCH variants. |
| 6 | */ |
| 7 | |
Angel Pons | 6a2ece7 | 2021-04-17 13:30:40 +0200 | [diff] [blame^] | 8 | #define __SIMPLE_DEVICE__ |
| 9 | |
Jingle Hsu | e07ea4c | 2020-07-01 18:26:49 +0800 | [diff] [blame] | 10 | #include <console/console.h> |
Angel Pons | 6a2ece7 | 2021-04-17 13:30:40 +0200 | [diff] [blame^] | 11 | #include <device/pci.h> |
| 12 | #include <intelblocks/pmclib.h> |
| 13 | #include <intelblocks/rtc.h> |
| 14 | #include <soc/pci_devs.h> |
| 15 | #include <soc/pm.h> |
| 16 | #include <soc/pmc.h> |
| 17 | #include <types.h> |
| 18 | |
| 19 | /* |
| 20 | * SMI |
| 21 | */ |
| 22 | |
| 23 | const char *const *soc_smi_sts_array(size_t *smi_arr) |
| 24 | { |
| 25 | static const char *const smi_sts_bits[] = { |
| 26 | [2] = "BIOS", |
| 27 | [3] = "LEGACY_USB", |
| 28 | [4] = "SLP_SMI", |
| 29 | [5] = "APM", |
| 30 | [6] = "SWSMI_TMR", |
| 31 | [7] = "BIOS_RLS", |
| 32 | [8] = "PM1", |
| 33 | [9] = "GPE0", |
| 34 | [10] = "GPI", |
| 35 | [11] = "MCSMI", |
| 36 | [12] = "DEVMON", |
| 37 | [13] = "TCO", |
| 38 | [14] = "PERIODIC", |
| 39 | [20] = "PCI_EXP_SMI", |
| 40 | [23] = "IE_SMI", |
| 41 | [25] = "SCC_SMI", |
| 42 | [26] = "SPI", |
| 43 | [27] = "GPIO_UNLOCK", |
| 44 | [28] = "ESPI_SMI", |
| 45 | [29] = "SERIAL_I/O", |
| 46 | [30] = "ME_SMI", |
| 47 | [31] = "XHCI", |
| 48 | }; |
| 49 | |
| 50 | *smi_arr = ARRAY_SIZE(smi_sts_bits); |
| 51 | return smi_sts_bits; |
| 52 | } |
| 53 | |
| 54 | /* |
| 55 | * TCO |
| 56 | */ |
| 57 | |
| 58 | const char *const *soc_tco_sts_array(size_t *tco_arr) |
| 59 | { |
| 60 | static const char *const tco_sts_bits[] = { |
| 61 | [0] = "NMI2SMI", |
| 62 | [1] = "OS_TCO", |
| 63 | [2] = "TCO_INT", |
| 64 | [3] = "TIMEOUT", |
| 65 | [7] = "NEWCENTURY", |
| 66 | [8] = "BIOSWR", |
| 67 | [9] = "CPUSCI", |
| 68 | [10] = "CPUSMI", |
| 69 | [12] = "CPUSERR", |
| 70 | [13] = "SLVSEL", |
| 71 | [16] = "INTRD_DET", |
| 72 | [17] = "SECOND_TO", |
| 73 | [20] = "SMLINK_SLV" |
| 74 | }; |
| 75 | |
| 76 | *tco_arr = ARRAY_SIZE(tco_sts_bits); |
| 77 | return tco_sts_bits; |
| 78 | } |
| 79 | |
| 80 | /* |
| 81 | * GPE0 |
| 82 | */ |
| 83 | |
| 84 | const char *const *soc_std_gpe_sts_array(size_t *gpe_arr) |
| 85 | { |
| 86 | static const char *const gpe_sts_bits[] = { |
| 87 | }; |
| 88 | |
| 89 | *gpe_arr = ARRAY_SIZE(gpe_sts_bits); |
| 90 | return gpe_sts_bits; |
| 91 | } |
| 92 | |
| 93 | uint8_t *pmc_mmio_regs(void) |
| 94 | { |
| 95 | return (void *)(uintptr_t) pci_read_config32(PCH_DEV_PMC, PWRMBASE); |
| 96 | } |
| 97 | |
| 98 | uintptr_t soc_read_pmc_base(void) |
| 99 | { |
| 100 | return (uintptr_t) (pmc_mmio_regs()); |
| 101 | } |
| 102 | |
| 103 | uint32_t *soc_pmc_etr_addr(void) |
| 104 | { |
| 105 | /* |
| 106 | * The pointer returned must not be cached, because the address depends on the |
| 107 | * MMCONF base address and the assigned PCI bus number, which both may change |
| 108 | * during the boot process! |
| 109 | */ |
| 110 | return pci_mmio_config32_addr(PCH_DEVFN_PMC << 12, ETR); |
| 111 | } |
| 112 | |
| 113 | void soc_get_gpi_gpe_configs(uint8_t *dw0, uint8_t *dw1, uint8_t *dw2) |
| 114 | { |
| 115 | /* No functionality for this yet */ |
| 116 | } |
Jingle Hsu | e07ea4c | 2020-07-01 18:26:49 +0800 | [diff] [blame] | 117 | |
| 118 | int soc_get_rtc_failed(void) |
| 119 | { |
| 120 | uint32_t pmcon_b = pci_s_read_config32(PCH_DEV_PMC, GEN_PMCON_B); |
| 121 | int rtc_fail = !!(pmcon_b & RTC_BATTERY_DEAD); |
| 122 | |
| 123 | if (rtc_fail) |
| 124 | printk(BIOS_ERR, "%s: RTC battery dead or removed\n", __func__); |
| 125 | |
| 126 | return rtc_fail; |
| 127 | } |
Angel Pons | 6a2ece7 | 2021-04-17 13:30:40 +0200 | [diff] [blame^] | 128 | |
| 129 | int rtc_failure(void) |
| 130 | { |
| 131 | u8 reg8; |
| 132 | int rtc_failed; |
| 133 | /* PMC Controller Device 0x1F, Func 02 */ |
| 134 | reg8 = pci_read_config8(PCH_DEV_PMC, GEN_PMCON_B); |
| 135 | rtc_failed = reg8 & RTC_BATTERY_DEAD; |
| 136 | if (rtc_failed) { |
| 137 | reg8 &= ~RTC_BATTERY_DEAD; |
| 138 | pci_write_config8(PCH_DEV_PMC, GEN_PMCON_B, reg8); |
| 139 | printk(BIOS_DEBUG, "rtc_failed = 0x%x\n", rtc_failed); |
| 140 | } |
| 141 | |
| 142 | return !!rtc_failed; |
| 143 | } |
| 144 | |
| 145 | /* Return 0, 3, or 5 to indicate the previous sleep state. */ |
| 146 | int soc_prev_sleep_state(const struct chipset_power_state *ps, int prev_sleep_state) |
| 147 | { |
| 148 | /* |
| 149 | * Check for any power failure to determine if this a wake from |
| 150 | * S5 because the PCH does not set the WAK_STS bit when waking |
| 151 | * from a true G3 state. |
| 152 | */ |
| 153 | if (!(ps->pm1_sts & WAK_STS) && |
| 154 | (ps->gen_pmcon_b & (PWR_FLR | SUS_PWR_FLR))) |
| 155 | prev_sleep_state = ACPI_S5; |
| 156 | |
| 157 | return prev_sleep_state; |
| 158 | } |
| 159 | |
| 160 | void soc_fill_power_state(struct chipset_power_state *ps) |
| 161 | { |
| 162 | uint8_t *pmc; |
| 163 | |
| 164 | ps->gen_pmcon_a = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_A); |
| 165 | ps->gen_pmcon_b = pci_read_config32(PCH_DEV_PMC, GEN_PMCON_B); |
| 166 | |
| 167 | pmc = pmc_mmio_regs(); |
| 168 | ps->gblrst_cause[0] = read32(pmc + GBLRST_CAUSE0); |
| 169 | ps->gblrst_cause[1] = read32(pmc + GBLRST_CAUSE1); |
| 170 | |
| 171 | printk(BIOS_DEBUG, "GEN_PMCON: %08x %08x\n", |
| 172 | ps->gen_pmcon_a, ps->gen_pmcon_b); |
| 173 | |
| 174 | printk(BIOS_DEBUG, "GBLRST_CAUSE: %08x %08x\n", |
| 175 | ps->gblrst_cause[0], ps->gblrst_cause[1]); |
| 176 | } |
| 177 | |
| 178 | /* STM Support */ |
| 179 | uint16_t get_pmbase(void) |
| 180 | { |
| 181 | return ACPI_BASE_ADDRESS; |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * Set which power state system will be after reapplying |
| 186 | * the power (from G3 State) |
| 187 | */ |
| 188 | void pmc_soc_set_afterg3_en(const bool on) |
| 189 | { |
| 190 | uint8_t reg8; |
| 191 | reg8 = pci_read_config8(PCH_DEV_PMC, GEN_PMCON_B); |
| 192 | if (on) |
| 193 | reg8 &= ~SLEEP_AFTER_POWER_FAIL; |
| 194 | else |
| 195 | reg8 |= SLEEP_AFTER_POWER_FAIL; |
| 196 | pci_write_config8(PCH_DEV_PMC, GEN_PMCON_B, reg8); |
| 197 | } |