/* Copyright 2012 The Chromium OS Authors. All rights reserved. * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ /* System module for Chrome EC : common functions */ #include "battery.h" #include "charge_manager.h" #include "chipset.h" #include "clock.h" #include "common.h" #include "console.h" #include "cpu.h" #include "cros_board_info.h" #include "dma.h" #include "extpower.h" #include "flash.h" #include "gpio.h" #include "hooks.h" #include "host_command.h" #include "i2c.h" #include "keyboard_scan.h" #include "lpc.h" #include "otp.h" #include "rwsig.h" #include "spi_flash.h" #ifdef CONFIG_MPU #include "mpu.h" #endif #include "panic.h" #include "sysjump.h" #include "system.h" #include "task.h" #include "timer.h" #include "uart.h" #include "usb_pd.h" #include "usb_pd_tcpm.h" #include "util.h" #include "cros_version.h" #include "watchdog.h" /* Console output macros */ #define CPUTS(outstr) cputs(CC_SYSTEM, outstr) #define CPRINTF(format, args...) cprintf(CC_SYSTEM, format, ## args) #define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args) /* Round up to a multiple of 4 */ #define ROUNDUP4(x) (((x) + 3) & ~3) /* Data for an individual jump tag */ struct jump_tag { uint16_t tag; /* Tag ID */ uint8_t data_size; /* Size of data which follows */ uint8_t data_version; /* Data version */ /* Followed by data_size bytes of data */ }; /* Jump data (at end of RAM, or preceding panic data) */ static struct jump_data *jdata; static uint32_t reset_flags; /* EC_RESET_FLAG_* */ static int jumped_to_image; static int disable_jump; /* Disable ALL jumps if system is locked */ static int force_locked; /* Force system locked even if WP isn't enabled */ static enum ec_reboot_cmd reboot_at_shutdown; static enum sysinfo_flags system_info_flags; STATIC_IF(CONFIG_HIBERNATE) uint32_t hibernate_seconds; STATIC_IF(CONFIG_HIBERNATE) uint32_t hibernate_microseconds; /* On-going actions preventing going into deep-sleep mode */ uint32_t sleep_mask; #ifdef CONFIG_LOW_POWER_IDLE_LIMITED /* Set it to prevent going into idle mode */ uint32_t idle_disabled; #endif /* SKU ID sourced from AP */ static uint32_t ap_sku_id; #ifdef CONFIG_HOSTCMD_AP_SET_SKUID #define AP_SKUID_SYSJUMP_TAG 0x4153 /* AS */ #define AP_SKUID_HOOK_VERSION 1 /** * Preserve AP SKUID across a sysjump. */ static void ap_sku_id_preserve_state(void) { system_add_jump_tag(AP_SKUID_SYSJUMP_TAG, AP_SKUID_HOOK_VERSION, sizeof(ap_sku_id), &ap_sku_id); } DECLARE_HOOK(HOOK_SYSJUMP, ap_sku_id_preserve_state, HOOK_PRIO_DEFAULT); /** * Restore AP SKUID after a sysjump. */ static void ap_sku_id_restore_state(void) { const uint32_t *prev_ap_sku_id; int size, version; prev_ap_sku_id = (const uint32_t *)system_get_jump_tag( AP_SKUID_SYSJUMP_TAG, &version, &size); if (prev_ap_sku_id && version == AP_SKUID_HOOK_VERSION && size == sizeof(prev_ap_sku_id)) { memcpy(&ap_sku_id, prev_ap_sku_id, sizeof(ap_sku_id)); } } DECLARE_HOOK(HOOK_INIT, ap_sku_id_restore_state, HOOK_PRIO_DEFAULT); #endif __overridable uint32_t board_get_sku_id(void) { return 0; } uint32_t system_get_sku_id(void) { if (IS_ENABLED(CONFIG_HOSTCMD_AP_SET_SKUID)) return ap_sku_id; return board_get_sku_id(); } /** * Return the program memory address where the image `copy` begins or should * begin. In the case of external storage, the image may or may not currently * reside at the location returned. */ uintptr_t get_program_memory_addr(enum ec_image copy) { switch (copy) { case EC_IMAGE_RO: return CONFIG_PROGRAM_MEMORY_BASE + CONFIG_RO_MEM_OFF; case EC_IMAGE_RW: return CONFIG_PROGRAM_MEMORY_BASE + CONFIG_RW_MEM_OFF; #ifdef CHIP_HAS_RO_B case EC_IMAGE_RO_B: return CONFIG_PROGRAM_MEMORY_BASE + CHIP_RO_B_MEM_OFF; #endif #ifdef CONFIG_RW_B case EC_IMAGE_RW_B: return CONFIG_PROGRAM_MEMORY_BASE + CONFIG_RW_B_MEM_OFF; #endif default: return INVALID_ADDR; } } /** * Return the size of the image copy, or 0 if error. */ static uint32_t __attribute__((unused)) get_size(enum ec_image copy) { /* Ensure we return aligned sizes. */ BUILD_ASSERT(CONFIG_RO_SIZE % SPI_FLASH_MAX_WRITE_SIZE == 0); BUILD_ASSERT(CONFIG_RW_SIZE % SPI_FLASH_MAX_WRITE_SIZE == 0); switch (copy) { case EC_IMAGE_RO: case EC_IMAGE_RO_B: return CONFIG_RO_SIZE; case EC_IMAGE_RW: case EC_IMAGE_RW_B: return CONFIG_RW_SIZE; default: return 0; } } test_mockable int system_is_locked(void) { static int is_locked = -1; if (force_locked) return 1; if (is_locked != -1) return is_locked; #ifdef CONFIG_SYSTEM_UNLOCKED /* System is explicitly unlocked */ is_locked = 0; return 0; #elif defined(CONFIG_FLASH_CROS) /* * Unlocked if write protect pin deasserted or read-only firmware * is not protected. */ if ((EC_FLASH_PROTECT_GPIO_ASSERTED | EC_FLASH_PROTECT_RO_NOW) & ~crec_flash_get_protect()) { is_locked = 0; return 0; } /* If WP pin is asserted and lock is applied, we're locked */ is_locked = 1; return 1; #else /* Other configs are locked by default */ is_locked = 1; return 1; #endif } test_mockable uintptr_t system_usable_ram_end(void) { /* Leave space at the end of RAM for jump data and tags. * * Note that jump_tag_total is 0 on a reboot, so we have the maximum * amount of RAM available on a reboot; we only lose space for stored * tags after a sysjump. When verified boot runs after a reboot, it'll * have as much RAM as we can give it; after verified boot jumps to * another image there'll be less RAM, but we'll care less too. */ return (uintptr_t)jdata - jdata->jump_tag_total; } void system_encode_save_flags(int flags, uint32_t *save_flags) { *save_flags = 0; /* Save current reset reasons if necessary */ if (flags & SYSTEM_RESET_PRESERVE_FLAGS) *save_flags = system_get_reset_flags() | EC_RESET_FLAG_PRESERVED; /* Add in AP off flag into saved flags. */ if (flags & SYSTEM_RESET_LEAVE_AP_OFF) *save_flags |= EC_RESET_FLAG_AP_OFF; /* Add in stay in RO flag into saved flags. */ if (flags & SYSTEM_RESET_STAY_IN_RO) *save_flags |= EC_RESET_FLAG_STAY_IN_RO; /* Add in watchdog flag into saved flags. */ if (flags & SYSTEM_RESET_AP_WATCHDOG) *save_flags |= EC_RESET_FLAG_AP_WATCHDOG; /* Save reset flag */ if (flags & (SYSTEM_RESET_HARD | SYSTEM_RESET_WAIT_EXT)) *save_flags |= EC_RESET_FLAG_HARD; else *save_flags |= EC_RESET_FLAG_SOFT; } uint32_t system_get_reset_flags(void) { return reset_flags; } void system_set_reset_flags(uint32_t flags) { reset_flags |= flags; } void system_clear_reset_flags(uint32_t flags) { reset_flags &= ~flags; } static void print_reset_flags(uint32_t flags) { int count = 0; int i; static const char * const reset_flag_descs[] = { #include "reset_flag_desc.inc" }; if (!flags) { CPUTS("unknown"); return; } for (i = 0; i < ARRAY_SIZE(reset_flag_descs); i++) { if (flags & BIT(i)) { if (count++) CPUTS(" "); CPUTS(reset_flag_descs[i]); } } if (flags >= BIT(i)) { if (count) CPUTS(" "); CPUTS("no-desc"); } } void system_print_reset_flags(void) { print_reset_flags(reset_flags); } void system_print_banner(void) { /* be less verbose if we boot for USB resume to meet spec timings */ if (!(system_get_reset_flags() & EC_RESET_FLAG_USB_RESUME)) { CPUTS("\n"); if (system_jumped_to_this_image()) CPRINTS("UART initialized after sysjump"); else CPUTS("\n--- UART initialized after reboot ---\n"); CPRINTF("[Image: %s, %s]\n", system_get_image_copy_string(), system_get_build_info()); CPUTS("[Reset cause: "); system_print_reset_flags(); CPUTS("]\n"); } } struct jump_data *get_jump_data(void) { uintptr_t addr; /* * Put the jump data before the panic data, or at the end of RAM if * panic data is not present. */ if (IS_ENABLED(CONFIG_ZEPHYR)) { /* * For Zephyr, the panic data is not at the end of RAM so * the jump data is always at the end of RAM. */ addr = CONFIG_RAM_BASE + CONFIG_RAM_SIZE; } else { addr = get_panic_data_start(); if (!addr) addr = CONFIG_RAM_BASE + CONFIG_RAM_SIZE; } return (struct jump_data *)(addr - sizeof(struct jump_data)); } int system_jumped_to_this_image(void) { return jumped_to_image; } int system_jumped_late(void) { return !(reset_flags & EC_RESET_FLAG_EFS) && jumped_to_image; } int system_add_jump_tag(uint16_t tag, int version, int size, const void *data) { struct jump_tag *t; /* Only allowed during a sysjump */ if (!jdata || jdata->magic != JUMP_DATA_MAGIC) return EC_ERROR_UNKNOWN; /* Make room for the new tag */ if (size > 255) return EC_ERROR_INVAL; jdata->jump_tag_total += ROUNDUP4(size) + sizeof(struct jump_tag); t = (struct jump_tag *)system_usable_ram_end(); t->tag = tag; t->data_size = size; t->data_version = version; if (size) memcpy(t + 1, data, size); return EC_SUCCESS; } const uint8_t *system_get_jump_tag(uint16_t tag, int *version, int *size) { const struct jump_tag *t; int used = 0; if (!jdata) return NULL; /* Search through tag data for a match */ while (used < jdata->jump_tag_total) { /* Check the next tag */ t = (const struct jump_tag *)(system_usable_ram_end() + used); used += sizeof(struct jump_tag) + ROUNDUP4(t->data_size); if (t->tag != tag) continue; /* Found a match */ if (size) *size = t->data_size; if (version) *version = t->data_version; return (const uint8_t *)(t + 1); } /* If we're still here, no match */ return NULL; } void system_disable_jump(void) { disable_jump = 1; #ifdef CONFIG_MPU if (system_is_locked()) { #ifndef CONFIG_ZEPHYR int ret; enum ec_image __attribute__((unused)) copy; CPRINTS("MPU type: %08x", mpu_get_type()); /* * Protect data RAM from code execution */ ret = mpu_protect_data_ram(); if (ret == EC_SUCCESS) { CPRINTS("data RAM locked. Exclusion %pP-%pP", &__iram_text_start, &__iram_text_end); } else { CPRINTS("Failed to lock data RAM (%d)", ret); return; } #if defined(CONFIG_EXTERNAL_STORAGE) || !defined(CONFIG_FLASH_PHYSICAL) /* * Protect code RAM from being overwritten */ ret = mpu_protect_code_ram(); if (ret == EC_SUCCESS) { CPRINTS("code RAM locked."); } else { CPRINTS("Failed to lock code RAM (%d)", ret); return; } #else /* * Protect inactive image (ie. RO if running RW, vice versa) * from code execution. */ switch (system_get_image_copy()) { case EC_IMAGE_RO: ret = mpu_lock_rw_flash(); copy = EC_IMAGE_RW; break; case EC_IMAGE_RW: ret = mpu_lock_ro_flash(); copy = EC_IMAGE_RO; break; default: copy = EC_IMAGE_UNKNOWN; ret = !EC_SUCCESS; } if (ret == EC_SUCCESS) { CPRINTS("%s image locked", ec_image_to_string(copy)); } else { CPRINTS("Failed to lock %s image (%d)", ec_image_to_string(copy), ret); return; } #endif /* !CONFIG_EXTERNAL_STORAGE */ #endif /* !CONFIG_ZEPHYR */ /* All regions were configured successfully, enable MPU */ mpu_enable(); } else { CPRINTS("System is unlocked. Skip MPU configuration"); } #endif /* CONFIG_MPU */ } test_mockable enum ec_image system_get_image_copy(void) { #ifdef CONFIG_EXTERNAL_STORAGE /* Return which region is used in program memory */ return system_get_shrspi_image_copy(); #else uintptr_t my_addr = (uintptr_t)system_get_image_copy - CONFIG_PROGRAM_MEMORY_BASE; if (my_addr >= CONFIG_RO_MEM_OFF && my_addr < (CONFIG_RO_MEM_OFF + CONFIG_RO_SIZE)) return EC_IMAGE_RO; if (my_addr >= CONFIG_RW_MEM_OFF && my_addr < (CONFIG_RW_MEM_OFF + CONFIG_RW_SIZE)) return EC_IMAGE_RW; #ifdef CHIP_HAS_RO_B if (my_addr >= CHIP_RO_B_MEM_OFF && my_addr < (CHIP_RO_B_MEM_OFF + CONFIG_RO_SIZE)) return EC_IMAGE_RO_B; #endif #ifdef CONFIG_RW_B if (my_addr >= CONFIG_RW_B_MEM_OFF && my_addr < (CONFIG_RW_B_MEM_OFF + CONFIG_RW_SIZE)) return EC_IMAGE_RW_B; #endif return EC_IMAGE_UNKNOWN; #endif } test_mockable int system_unsafe_to_overwrite(uint32_t offset, uint32_t size) { uint32_t r_offset; uint32_t r_size; enum ec_image copy = system_get_image_copy(); switch (copy) { case EC_IMAGE_RO: r_size = CONFIG_RO_SIZE; break; case EC_IMAGE_RW: case EC_IMAGE_RW_B: r_size = CONFIG_RW_SIZE; #ifdef CONFIG_RWSIG /* Allow RW sig to be overwritten */ r_size -= CONFIG_RW_SIG_SIZE; #endif break; default: return 0; } r_offset = flash_get_rw_offset(copy); if ((offset >= r_offset && offset < (r_offset + r_size)) || (r_offset >= offset && r_offset < (offset + size))) return 1; else return 0; } const char *system_get_image_copy_string(void) { return ec_image_to_string(system_get_image_copy()); } const char *ec_image_to_string(enum ec_image copy) { static const char * const image_names[] = { "unknown", "RO", "RW", "RO_B", "RW_B" }; return image_names[copy < ARRAY_SIZE(image_names) ? copy : 0]; } __overridable void board_pulse_entering_rw(void) { gpio_set_level(GPIO_ENTERING_RW, 1); usleep(MSEC); gpio_set_level(GPIO_ENTERING_RW, 0); } /** * Jump to what we hope is the init address of an image. * * This function does not return. * * @param init_addr Init address of target image */ static void jump_to_image(uintptr_t init_addr) { void (*resetvec)(void); /* * Jumping to any image asserts the signal to the Silego chip that that * EC is not in read-only firmware. (This is not technically true if * jumping from RO -> RO, but that's not a meaningful use case...). * * Pulse the signal long enough to set the latch in the Silego, then * drop it again so we don't leak power through the pulldown in the * Silego. */ board_pulse_entering_rw(); /* * Since in EFS2, USB/PD won't be enabled in RO or if it's enabled in * RO, EC won't jump to RW, pd_prepare_sysjump is not needed. Even if * PD is enabled because the device is not write protected, EFS2 jumps * to RW before PD tasks start. So, there is no states to clean up. * * Even if EFS2 is enabled, late sysjump can happen when secdata * kernel is missing or a communication error happens. So, we need to * check whether PD tasks have started (instead of VBOOT_EFS2, which * is static). */ if (task_start_called() && IS_ENABLED(CONFIG_USB_PD_ALT_MODE_DFP)) /* Note: must be before i2c module is locked down */ pd_prepare_sysjump(); #ifdef CONFIG_I2C_CONTROLLER /* Prepare I2C module for sysjump */ i2c_prepare_sysjump(); #endif /* Flush UART output */ cflush(); /* Fill in preserved data between jumps */ jdata->reserved0 = 0; jdata->magic = JUMP_DATA_MAGIC; jdata->version = JUMP_DATA_VERSION; jdata->reset_flags = reset_flags; jdata->jump_tag_total = 0; /* Reset tags */ jdata->struct_size = sizeof(struct jump_data); /* Call other hooks; these may add tags */ hook_notify(HOOK_SYSJUMP); /* Disable interrupts before jump */ interrupt_disable_all(); #ifdef CONFIG_DMA /* Disable all DMA channels to avoid memory corruption */ dma_disable_all(); #endif /* CONFIG_DMA */ /* Jump to the reset vector */ resetvec = (void(*)(void))init_addr; resetvec(); } static int is_rw_image(enum ec_image copy) { return copy == EC_IMAGE_RW || copy == EC_IMAGE_RW_B; } int system_is_in_rw(void) { return is_rw_image(system_get_image_copy()); } static int system_run_image_copy_with_flags(enum ec_image copy, uint32_t add_reset_flags) { uintptr_t base; uintptr_t init_addr; /* If system is already running the requested image, done */ if (system_get_image_copy() == copy) return EC_SUCCESS; if (system_is_locked()) { /* System is locked, so disallow jumping between images unless * this is the initial jump from RO to RW code. */ /* Must currently be running the RO image */ if (system_get_image_copy() != EC_IMAGE_RO) return EC_ERROR_ACCESS_DENIED; /* Target image must be RW image */ if (!is_rw_image(copy)) return EC_ERROR_ACCESS_DENIED; /* Jumping must still be enabled */ if (disable_jump) return EC_ERROR_ACCESS_DENIED; } /* Load the appropriate reset vector */ base = get_program_memory_addr(copy); if (base == 0xffffffff) return EC_ERROR_INVAL; if (IS_ENABLED(CONFIG_EXTERNAL_STORAGE)) { /* Jump to loader */ init_addr = system_get_lfw_address(); system_set_image_copy(copy); } else if (IS_ENABLED(CONFIG_FW_RESET_VECTOR)) { /* Get reset vector */ init_addr = system_get_fw_reset_vector(base); } else { uintptr_t init = base + 4; /* Skip any head room in the RO image */ if (copy == EC_IMAGE_RO) init += CONFIG_RO_HEAD_ROOM; init_addr = *(uintptr_t *)(init); /* Make sure the reset vector is inside the destination image */ if (!IS_ENABLED(EMU_BUILD) && (init_addr < base || init_addr >= base + get_size(copy))) return EC_ERROR_UNKNOWN; } system_set_reset_flags(add_reset_flags); /* If jumping back to RO, we're no longer in the EFS context. */ if (copy == EC_IMAGE_RO) system_clear_reset_flags(EC_RESET_FLAG_EFS); CPRINTS("Jumping to image %s (0x%08x)", ec_image_to_string(copy), system_get_reset_flags()); jump_to_image(init_addr); /* Should never get here */ return EC_ERROR_UNKNOWN; } test_mockable int system_run_image_copy(enum ec_image copy) { /* No reset flags needed for most jumps */ return system_run_image_copy_with_flags(copy, 0); } enum ec_image system_get_active_copy(void) { uint8_t slot; if (system_get_bbram(SYSTEM_BBRAM_IDX_TRY_SLOT, &slot)) slot = EC_IMAGE_RW_A; /* This makes it return RW_A by default. For example, this happens when * BBRAM isn't initialized. */ return slot == EC_IMAGE_RW_B ? slot : EC_IMAGE_RW_A; } enum ec_image system_get_update_copy(void) { #ifdef CONFIG_VBOOT_EFS /* Not needed for EFS2, which is single-slot. */ return system_get_active_copy() == EC_IMAGE_RW_A ? EC_IMAGE_RW_B : EC_IMAGE_RW_A; #else return EC_IMAGE_RW_A; #endif } int system_set_active_copy(enum ec_image copy) { return system_set_bbram(SYSTEM_BBRAM_IDX_TRY_SLOT, copy); } /* * This is defined in system.c instead of flash.c because it's called even * on the boards which don't include flash.o. (e.g. hadoken, stm32l476g-eval) */ uint32_t flash_get_rw_offset(enum ec_image copy) { #ifdef CONFIG_VBOOT_EFS if (copy == EC_IMAGE_RW_B) return CONFIG_EC_WRITABLE_STORAGE_OFF + CONFIG_RW_B_STORAGE_OFF; #endif if (is_rw_image(copy)) return CONFIG_EC_WRITABLE_STORAGE_OFF + CONFIG_RW_STORAGE_OFF; return CONFIG_EC_PROTECTED_STORAGE_OFF + CONFIG_RO_STORAGE_OFF; } const struct image_data *system_get_image_data(enum ec_image copy) { static struct image_data data; uintptr_t addr; enum ec_image active_copy = system_get_image_copy(); /* Handle version of current image */ if (copy == active_copy || copy == EC_IMAGE_UNKNOWN) return ¤t_image_data; if (active_copy == EC_IMAGE_UNKNOWN) return NULL; /* * The version string is always located after the reset vectors, so * it's the same offset as in the current image. Find that offset. */ addr = ((uintptr_t)¤t_image_data - get_program_memory_addr(active_copy)); /* * Read the version information from the proper location * on storage. */ addr += flash_get_rw_offset(copy); #ifdef CONFIG_MAPPED_STORAGE addr += CONFIG_MAPPED_STORAGE_BASE; crec_flash_lock_mapped_storage(1); memcpy(&data, (const void *)addr, sizeof(data)); crec_flash_lock_mapped_storage(0); #else /* Read the version struct from flash into a buffer. */ if (crec_flash_read(addr, sizeof(data), (char *)&data)) return NULL; #endif /* Make sure the version struct cookies match before returning the * version string. */ if (data.cookie1 == current_image_data.cookie1 && data.cookie2 == current_image_data.cookie2) return &data; return NULL; } __attribute__((weak)) /* Weird chips may need their own implementations */ const char *system_get_version(enum ec_image copy) { const struct image_data *data = system_get_image_data(copy); return data ? data->version : ""; } #ifdef CONFIG_ROLLBACK int32_t system_get_rollback_version(enum ec_image copy) { const struct image_data *data = system_get_image_data(copy); return data ? data->rollback_version : -1; } #endif int system_get_image_used(enum ec_image copy) { const struct image_data *data = system_get_image_data(copy); return data ? MAX((int)data->size, 0) : 0; } /* * Overwrite it in board directory in case that we want to read board version * in our own way. */ __overridable int board_get_version(void) { #ifdef CONFIG_BOARD_VERSION_GPIO return (!!gpio_get_level(GPIO_BOARD_VERSION1) << 0) | (!!gpio_get_level(GPIO_BOARD_VERSION2) << 1) | (!!gpio_get_level(GPIO_BOARD_VERSION3) << 2); #else return 0; #endif } /* * Returns positive board version if successfully retrieved. Otherwise the * value is a negative version of an EC return code. Without this optimization * multiple boards run out of flash size. */ int system_get_board_version(void) { int board_id; if (IS_ENABLED(CONFIG_BOARD_VERSION_CBI)) { int error; error = cbi_get_board_version(&board_id); if (error) return -error; return board_id; }; return board_get_version(); } __attribute__((weak)) /* Weird chips may need their own implementations */ const char *system_get_build_info(void) { return build_info; } void system_common_pre_init(void) { #ifdef CONFIG_SOFTWARE_PANIC /* * Log panic cause if watchdog caused reset and panic cause * was not already logged. This must happen before calculating * jump_data address because it might change panic pointer. */ if (system_get_reset_flags() & EC_RESET_FLAG_WATCHDOG) { uint32_t reason; uint32_t info; uint8_t exception; panic_get_reason(&reason, &info, &exception); if (reason != PANIC_SW_WATCHDOG) panic_set_reason(PANIC_SW_WATCHDOG, 0, 0); } #endif jdata = get_jump_data(); /* * Check jump data if this is a jump between images. */ if (jdata->magic == JUMP_DATA_MAGIC && jdata->version >= 1) { /* Change in jump data struct size between the previous image * and this one. */ int delta; /* Yes, we jumped to this image */ jumped_to_image = 1; /* Restore the reset flags */ reset_flags = jdata->reset_flags | EC_RESET_FLAG_SYSJUMP; /* * If the jump data structure isn't the same size as the * current one, shift the jump tags to immediately before the * current jump data structure, to make room for initalizing * the new fields below. */ if (jdata->version == 1) delta = 0; /* No tags in v1, so no need for move */ else if (jdata->version == 2) delta = sizeof(struct jump_data) - JUMP_DATA_SIZE_V2; else delta = sizeof(struct jump_data) - jdata->struct_size; if (delta && jdata->jump_tag_total) { uint8_t *d = (uint8_t *)system_usable_ram_end(); memmove(d, d + delta, jdata->jump_tag_total); } /* Initialize fields added after version 1 */ if (jdata->version < 2) jdata->jump_tag_total = 0; /* Initialize fields added after version 2 */ if (jdata->version < 3) jdata->reserved0 = 0; /* Struct size is now the current struct size */ jdata->struct_size = sizeof(struct jump_data); /* * Clear the jump struct's magic number. This prevents * accidentally detecting a jump when there wasn't one, and * disallows use of system_add_jump_tag(). */ jdata->magic = 0; } else { /* Clear the whole jump_data struct */ memset(jdata, 0, sizeof(struct jump_data)); } } void system_enter_manual_recovery(void) { system_info_flags |= SYSTEM_IN_MANUAL_RECOVERY; } void system_exit_manual_recovery(void) { system_info_flags &= ~SYSTEM_IN_MANUAL_RECOVERY; } int system_is_manual_recovery(void) { return system_info_flags & SYSTEM_IN_MANUAL_RECOVERY; } /** * Handle a pending reboot command. */ static int handle_pending_reboot(enum ec_reboot_cmd cmd) { switch (cmd) { case EC_REBOOT_CANCEL: return EC_SUCCESS; case EC_REBOOT_JUMP_RO: return system_run_image_copy_with_flags(EC_IMAGE_RO, EC_RESET_FLAG_STAY_IN_RO); case EC_REBOOT_JUMP_RW: return system_run_image_copy(system_get_active_copy()); case EC_REBOOT_COLD: case EC_REBOOT_COLD_AP_OFF: /* * Reboot the PD chip(s) as well, but first suspend the ports * if this board has PD tasks running so they don't query the * TCPCs while they reset. */ if (IS_ENABLED(HAS_TASK_PD_C0)) { int port; for (port = 0; port < board_get_usb_pd_port_count(); port++) pd_set_suspend(port, 1); /* * Give enough time to apply CC Open and brown out if * we are running with out a battery. */ msleep(20); } /* Reset external PD chips. */ if (IS_ENABLED(HAS_TASK_PDCMD) || IS_ENABLED(CONFIG_HAS_TASK_PD_INT)) board_reset_pd_mcu(); cflush(); if (cmd == EC_REBOOT_COLD_AP_OFF) system_reset(SYSTEM_RESET_HARD | SYSTEM_RESET_LEAVE_AP_OFF); else system_reset(SYSTEM_RESET_HARD); /* That shouldn't return... */ return EC_ERROR_UNKNOWN; case EC_REBOOT_DISABLE_JUMP: system_disable_jump(); return EC_SUCCESS; case EC_REBOOT_HIBERNATE_CLEAR_AP_OFF: if (!IS_ENABLED(CONFIG_HIBERNATE)) return EC_ERROR_INVAL; if (IS_ENABLED(CONFIG_POWER_BUTTON_INIT_IDLE)) { CPRINTS("Clearing AP_IDLE"); chip_save_reset_flags(chip_read_reset_flags() & ~EC_RESET_FLAG_AP_IDLE); } /* Intentional fall-through */ case EC_REBOOT_HIBERNATE: if (!IS_ENABLED(CONFIG_HIBERNATE)) return EC_ERROR_INVAL; /* * Allow some time for the system to quiesce before entering EC * hibernate. Otherwise, some stray signals may cause an * immediate wake up. */ CPRINTS("Waiting 1s before hibernating..."); msleep(1000); CPRINTS("system hibernating"); system_hibernate(hibernate_seconds, hibernate_microseconds); /* That shouldn't return... */ return EC_ERROR_UNKNOWN; default: return EC_ERROR_INVAL; } } void system_enter_hibernate(uint32_t seconds, uint32_t microseconds) { if (!IS_ENABLED(CONFIG_HIBERNATE)) return; /* * On ChromeOS devices, if AC is present, don't hibernate. * It might trigger an immediate wake up (since AC is present), * resulting in an AP reboot. * Hibernate when AC is present never occurs in normal circumstantces, * this is to prevent an action triggered by developers. * See: b/192259035 */ if (IS_ENABLED(CONFIG_EXTPOWER) && IS_ENABLED(HAS_TASK_CHIPSET) && extpower_is_present()) { CPRINTS("AC on, skip hibernate"); return; } /* * If chipset is already off, then call system_hibernate directly. Else, * let chipset_task bring down the power rails and transition to proper * state before system_hibernate is called. */ if (chipset_in_state(CHIPSET_STATE_ANY_OFF)) system_hibernate(seconds, microseconds); else { reboot_at_shutdown = EC_REBOOT_HIBERNATE; hibernate_seconds = seconds; hibernate_microseconds = microseconds; chipset_force_shutdown(CHIPSET_SHUTDOWN_CONSOLE_CMD); } } /*****************************************************************************/ /* Hooks */ static void system_common_shutdown(void) { system_exit_manual_recovery(); if (reboot_at_shutdown) CPRINTF("Reboot at shutdown: %d\n", reboot_at_shutdown); handle_pending_reboot(reboot_at_shutdown); } DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN_COMPLETE, system_common_shutdown, HOOK_PRIO_DEFAULT); /*****************************************************************************/ /* Console and Host Commands */ #ifdef CONFIG_CMD_SYSINFO static int sysinfo(struct ec_response_sysinfo *info) { memset(info, 0, sizeof(*info)); info->reset_flags = system_get_reset_flags(); info->current_image = system_get_image_copy(); if (system_jumped_to_this_image()) system_info_flags |= SYSTEM_JUMPED_TO_CURRENT_IMAGE; if (system_is_locked()) { system_info_flags |= SYSTEM_IS_LOCKED; if (force_locked) system_info_flags |= SYSTEM_IS_FORCE_LOCKED; if (!disable_jump) system_info_flags |= SYSTEM_JUMP_ENABLED; } if (reboot_at_shutdown) system_info_flags |= SYSTEM_REBOOT_AT_SHUTDOWN; info->flags = system_info_flags; return EC_SUCCESS; } static int command_sysinfo(int argc, char **argv) { struct ec_response_sysinfo info; int rv; rv = sysinfo(&info); if (rv != EC_SUCCESS) return rv; ccprintf("Reset flags: 0x%08x (", info.reset_flags); system_print_reset_flags(); ccprintf(")\n"); ccprintf("Copy: %s\n", ec_image_to_string(info.current_image)); ccprintf("Jumped: %s\n", (info.flags & SYSTEM_JUMPED_TO_CURRENT_IMAGE) ? "yes" : "no"); ccprintf("Recovery: %s\n", (info.flags & SYSTEM_IN_MANUAL_RECOVERY) ? "yes" : "no"); ccputs("Flags: "); if (info.flags & SYSTEM_IS_LOCKED) { ccputs(" locked"); if (info.flags & SYSTEM_IS_FORCE_LOCKED) ccputs(" (forced)"); if (!(info.flags & SYSTEM_JUMP_ENABLED)) ccputs(" jump-disabled"); } else ccputs(" unlocked"); ccputs("\n"); if (info.flags & SYSTEM_REBOOT_AT_SHUTDOWN) ccprintf("Reboot at shutdown: %d\n", !!(info.flags & SYSTEM_REBOOT_AT_SHUTDOWN)); return EC_SUCCESS; } DECLARE_SAFE_CONSOLE_COMMAND(sysinfo, command_sysinfo, NULL, "Print system info"); static enum ec_status host_command_sysinfo(struct host_cmd_handler_args *args) { struct ec_response_sysinfo *r = args->response; if (sysinfo(r) != EC_SUCCESS) return EC_RES_ERROR; args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_SYSINFO, host_command_sysinfo, EC_VER_MASK(EC_VER_SYSINFO)); #endif #ifdef CONFIG_CMD_SCRATCHPAD static int command_scratchpad(int argc, char **argv) { int rv = EC_SUCCESS; uint32_t scratchpad_value; if (argc == 2) { char *e; int s = strtoi(argv[1], &e, 0); if (*e) return EC_ERROR_PARAM1; rv = system_set_scratchpad(s); if (rv) { ccprintf("Error setting scratchpad register (%d)\b", rv); return rv; } } rv = system_get_scratchpad(&scratchpad_value); if (rv) ccprintf("Error reading scratchpad register (%d)\n", rv); else ccprintf("Scratchpad: 0x%08x\n", scratchpad_value); return rv; } DECLARE_CONSOLE_COMMAND(scratchpad, command_scratchpad, "[val]", "Get or set scratchpad value"); #endif /* CONFIG_CMD_SCRATCHPAD */ __maybe_unused static int command_hibernate(int argc, char **argv) { int seconds = 0; int microseconds = 0; if (argc >= 2) seconds = strtoi(argv[1], NULL, 0); if (argc >= 3) microseconds = strtoi(argv[2], NULL, 0); if (seconds || microseconds) { if (IS_ENABLED(CONFIG_HIBERNATE_PSL) && !IS_ENABLED(NPCX_LCT_SUPPORT)) { ccprintf("Hibernating with timeout not supported " "when PSL is enabled.\n"); return EC_ERROR_INVAL; } ccprintf("Hibernating for %d.%06d s\n", seconds, microseconds); } else ccprintf("Hibernating until wake pin asserted.\n"); system_enter_hibernate(seconds, microseconds); return EC_SUCCESS; } #ifdef CONFIG_HIBERNATE DECLARE_CONSOLE_COMMAND(hibernate, command_hibernate, "[sec] [usec]", "Hibernate the EC"); #endif /* CONFIG_HIBERNATE */ /* * A typical build string has the following format * * * * some EC board, however, are composed of multiple components, their build * strings can include several subcomponent versions between the main version * and the build date, for instance * * cr50_v1.1.4979-0061603+ private-cr51:v0.0.66-bd9a0fe tpm2:v0.0.259-2b... * * Each subcomponent in this case includes the ":v" substring. For these * combined version strings this function prints each version or subcomponent * version on a different line. */ static void print_build_string(void) { const char *full_build_string; const char *p; char symbol; int seen_colonv; ccprintf("Build: "); full_build_string = system_get_build_info(); /* 50 characters or less, will fit into the terminal line. */ if (strlen(full_build_string) < 50) { ccprintf("%s\n", full_build_string); return; } /* * Build version string needs splitting, let's split it at the first * space (this is where the main version ends), and then on each space * after the ":v" substring, this is where subcomponent versions are * separated. */ p = full_build_string; seen_colonv = 1; symbol = *p++; while (symbol) { if ((symbol == ' ') && seen_colonv) { seen_colonv = 0; /* Indent each line under 'Build: ' */ ccprintf("\n "); } else { if ((symbol == ':') && (*p == 'v')) seen_colonv = 1; ccprintf("%c", symbol); } symbol = *p++; } ccprintf("\n"); } static int command_version(int argc, char **argv) { int board_version; ccprintf("Chip: %s %s %s\n", system_get_chip_vendor(), system_get_chip_name(), system_get_chip_revision()); board_version = system_get_board_version(); if (board_version < 0) ccprintf("Board: Error %d\n", -board_version); else ccprintf("Board: %d\n", board_version); #ifdef CHIP_HAS_RO_B { enum ec_image active; active = system_get_ro_image_copy(); ccprintf("RO_A: %c %s\n", (active == EC_IMAGE_RO ? '*' : ' '), system_get_version(EC_IMAGE_RO)); ccprintf("RO_B: %c %s\n", (active == EC_IMAGE_RO_B ? '*' : ' '), system_get_version(EC_IMAGE_RO_B)); } #else ccprintf("RO: %s\n", system_get_version(EC_IMAGE_RO)); #endif #ifdef CONFIG_RW_B { enum ec_image active; active = system_get_image_copy(); ccprintf("RW_A: %c %s\n", (active == EC_IMAGE_RW ? '*' : ' '), system_get_version(EC_IMAGE_RW)); ccprintf("RW_B: %c %s\n", (active == EC_IMAGE_RW_B ? '*' : ' '), system_get_version(EC_IMAGE_RW_B)); } #else ccprintf("RW: %s\n", system_get_version(EC_IMAGE_RW)); #endif system_print_extended_version_info(); print_build_string(); return EC_SUCCESS; } DECLARE_SAFE_CONSOLE_COMMAND(version, command_version, NULL, "Print versions"); #ifdef CONFIG_CMD_SYSJUMP static int command_sysjump(int argc, char **argv) { uint32_t addr; char *e; if (argc < 2) return EC_ERROR_PARAM_COUNT; /* Handle named images */ if (!strcasecmp(argv[1], "RO")) return system_run_image_copy_with_flags(EC_IMAGE_RO, EC_RESET_FLAG_STAY_IN_RO); else if (!strcasecmp(argv[1], "RW") || !strcasecmp(argv[1], "A")) return system_run_image_copy(EC_IMAGE_RW); else if (!strcasecmp(argv[1], "B")) { #ifdef CONFIG_RW_B return system_run_image_copy(EC_IMAGE_RW_B); #else return EC_ERROR_PARAM1; #endif } else if (!strcasecmp(argv[1], "disable")) { system_disable_jump(); return EC_SUCCESS; } /* Arbitrary jumps are only allowed on an unlocked system */ if (system_is_locked()) return EC_ERROR_ACCESS_DENIED; /* Check for arbitrary address */ addr = strtoi(argv[1], &e, 0); if (*e) return EC_ERROR_PARAM1; ccprintf("Jumping to 0x%08x\n", addr); cflush(); jump_to_image(addr); return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(sysjump, command_sysjump, "[RO | RW | A | B | addr | disable]", "Jump to a system image or address"); #endif static int command_reboot(int argc, char **argv) { int flags = SYSTEM_RESET_MANUALLY_TRIGGERED; int i; for (i = 1; i < argc; i++) { if (!strcasecmp(argv[i], "hard") || !strcasecmp(argv[i], "cold")) { flags |= SYSTEM_RESET_HARD; } else if (!strcasecmp(argv[i], "soft")) { flags &= ~SYSTEM_RESET_HARD; } else if (!strcasecmp(argv[i], "ap-off")) { flags |= SYSTEM_RESET_LEAVE_AP_OFF; } else if (!strcasecmp(argv[i], "ap-off-in-ro")) { flags |= (SYSTEM_RESET_LEAVE_AP_OFF | SYSTEM_RESET_STAY_IN_RO); } else if (!strcasecmp(argv[i], "ro")) { flags |= SYSTEM_RESET_STAY_IN_RO; } else if (!strcasecmp(argv[i], "cancel")) { reboot_at_shutdown = EC_REBOOT_CANCEL; return EC_SUCCESS; } else if (!strcasecmp(argv[i], "preserve")) { flags |= SYSTEM_RESET_PRESERVE_FLAGS; } else if (!strcasecmp(argv[i], "wait-ext")) { flags |= SYSTEM_RESET_WAIT_EXT; } else return EC_ERROR_PARAM1 + i - 1; } if (flags & SYSTEM_RESET_HARD) ccputs("Hard-"); if (flags & SYSTEM_RESET_WAIT_EXT) ccputs("Waiting for ext reset!\n\n\n"); else ccputs("Rebooting!\n\n\n"); cflush(); system_reset(flags); return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND( reboot, command_reboot, "[hard|soft] [preserve] [ap-off] [wait-ext] [cancel] [ap-off-in-ro]" " [ro]", "Reboot the EC"); #ifdef CONFIG_CMD_SYSLOCK static int command_system_lock(int argc, char **argv) { force_locked = 1; return EC_SUCCESS; } DECLARE_SAFE_CONSOLE_COMMAND(syslock, command_system_lock, NULL, "Lock the system, even if WP is disabled"); #endif #if defined(CONFIG_LOW_POWER_IDLE) && defined(CONFIG_CMD_SLEEPMASK) /** * Modify and print the sleep mask which controls access to deep sleep * mode in the idle task. */ static int command_sleepmask(int argc, char **argv) { #ifdef CONFIG_CMD_SLEEPMASK_SET int v; if (argc >= 2) { if (parse_bool(argv[1], &v)) { if (v) disable_sleep(SLEEP_MASK_FORCE_NO_DSLEEP); else enable_sleep(SLEEP_MASK_FORCE_NO_DSLEEP); } else { char *e; v = strtoi(argv[1], &e, 10); if (*e) return EC_ERROR_PARAM1; /* Set sleep mask directly. */ sleep_mask = v; } } #endif ccprintf("sleep mask: %08x\n", sleep_mask); return EC_SUCCESS; } DECLARE_SAFE_CONSOLE_COMMAND(sleepmask, command_sleepmask, "[ on | off | ]", "Display/force sleep mask"); #endif #ifdef CONFIG_CMD_JUMPTAGS static int command_jumptags(int argc, char **argv) { const struct jump_tag *t; int used = 0; /* Jump tags valid only after a sysjump */ if (!jdata) return EC_SUCCESS; while (used < jdata->jump_tag_total) { /* Check the next tag */ t = (const struct jump_tag *)(system_usable_ram_end() + used); used += sizeof(struct jump_tag) + ROUNDUP4(t->data_size); ccprintf("%08x: 0x%04x %c%c.%d %3d\n", (uintptr_t)t, t->tag, t->tag >> 8, (uint8_t)t->tag, t->data_version, t->data_size); } return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(jumptags, command_jumptags, NULL, "List jump tags"); #endif /* CONFIG_CMD_JUMPTAGS */ #ifdef CONFIG_EMULATED_SYSRQ static int command_sysrq(int argc, char **argv) { char key = 'x'; if (argc > 1 && argv[1]) key = argv[1][0]; host_send_sysrq(key); return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(sysrq, command_sysrq, "[key]", "Simulate sysrq press (default: x)"); #endif /* CONFIG_EMULATED_SYSRQ */ #ifdef CONFIG_CMD_RESET_FLAGS static int command_rflags(int argc, char **argv) { print_reset_flags(chip_read_reset_flags()); ccprintf("\n"); return EC_SUCCESS; } DECLARE_CONSOLE_COMMAND(rflags, command_rflags, NULL, "Print reset flags saved in non-volatile memory"); #endif /*****************************************************************************/ /* Host commands */ static enum ec_status host_command_get_version(struct host_cmd_handler_args *args) { struct ec_response_get_version *r = args->response; enum ec_image active_slot = system_get_active_copy(); strzcpy(r->version_string_ro, system_get_version(EC_IMAGE_RO), sizeof(r->version_string_ro)); strzcpy(r->version_string_rw, system_get_version(active_slot), sizeof(r->version_string_rw)); switch (system_get_image_copy()) { case EC_IMAGE_RO: r->current_image = EC_IMAGE_RO; break; case EC_IMAGE_RW: case EC_IMAGE_RW_B: r->current_image = EC_IMAGE_RW; break; default: r->current_image = EC_IMAGE_UNKNOWN; break; } args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_GET_VERSION, host_command_get_version, EC_VER_MASK(0)); #ifdef CONFIG_HOSTCMD_SKUID static enum ec_status host_command_get_sku_id(struct host_cmd_handler_args *args) { struct ec_sku_id_info *r = args->response; r->sku_id = system_get_sku_id(); args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_GET_SKU_ID, host_command_get_sku_id, EC_VER_MASK(0)); #endif #ifdef CONFIG_HOSTCMD_AP_SET_SKUID static enum ec_status host_command_set_sku_id(struct host_cmd_handler_args *args) { const struct ec_sku_id_info *p = args->params; ap_sku_id = p->sku_id; return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_SET_SKU_ID, host_command_set_sku_id, EC_VER_MASK(0)); #endif #ifdef CONFIG_KEYBOARD_LANGUAGE_ID static enum ec_status host_command_get_keyboard_id(struct host_cmd_handler_args *args) { struct ec_response_keyboard_id *r = args->response; r->keyboard_id = keyboard_get_keyboard_id(); args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_GET_KEYBOARD_ID, host_command_get_keyboard_id, EC_VER_MASK(0)); #endif static enum ec_status host_command_build_info(struct host_cmd_handler_args *args) { strzcpy(args->response, system_get_build_info(), args->response_max); args->response_size = strlen(args->response) + 1; return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_GET_BUILD_INFO, host_command_build_info, EC_VER_MASK(0)); static enum ec_status host_command_get_chip_info(struct host_cmd_handler_args *args) { struct ec_response_get_chip_info *r = args->response; strzcpy(r->vendor, system_get_chip_vendor(), sizeof(r->vendor)); strzcpy(r->name, system_get_chip_name(), sizeof(r->name)); strzcpy(r->revision, system_get_chip_revision(), sizeof(r->revision)); args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_GET_CHIP_INFO, host_command_get_chip_info, EC_VER_MASK(0)); enum ec_status host_command_get_board_version(struct host_cmd_handler_args *args) { struct ec_response_board_version *r = args->response; int board_version; board_version = system_get_board_version(); if (board_version < 0) { CPRINTS("Failed (%d) getting board version", -board_version); return EC_RES_ERROR; } r->board_version = board_version; args->response_size = sizeof(*r); return EC_RES_SUCCESS; } DECLARE_HOST_COMMAND(EC_CMD_GET_BOARD_VERSION, host_command_get_board_version, EC_VER_MASK(0)); enum ec_status host_command_reboot(struct host_cmd_handler_args *args) { struct ec_params_reboot_ec p; /* * Ensure reboot parameters don't get clobbered when the response * is sent in case data argument points to the host tx/rx buffer. */ memcpy(&p, args->params, sizeof(p)); if (p.cmd == EC_REBOOT_CANCEL) { /* Cancel pending reboot */ reboot_at_shutdown = EC_REBOOT_CANCEL; return EC_RES_SUCCESS; } if (p.flags & EC_REBOOT_FLAG_SWITCH_RW_SLOT) { #ifdef CONFIG_VBOOT_EFS if (system_set_active_copy(system_get_update_copy())) CPRINTS("Failed to set active slot"); #else return EC_RES_INVALID_PARAM; #endif } if (p.flags & EC_REBOOT_FLAG_ON_AP_SHUTDOWN) { /* Store request for processing at chipset shutdown */ reboot_at_shutdown = p.cmd; return EC_RES_SUCCESS; } #ifdef HAS_TASK_HOSTCMD if (p.cmd == EC_REBOOT_JUMP_RO || p.cmd == EC_REBOOT_JUMP_RW || p.cmd == EC_REBOOT_COLD || p.cmd == EC_REBOOT_HIBERNATE || p.cmd == EC_REBOOT_COLD_AP_OFF) { /* Clean busy bits on host for commands that won't return */ args->result = EC_RES_SUCCESS; host_send_response(args); } #endif CPRINTS("Executing host reboot command %d", p.cmd); switch (handle_pending_reboot(p.cmd)) { case EC_SUCCESS: return EC_RES_SUCCESS; case EC_ERROR_INVAL: return EC_RES_INVALID_PARAM; case EC_ERROR_ACCESS_DENIED: return EC_RES_ACCESS_DENIED; default: return EC_RES_ERROR; } } DECLARE_HOST_COMMAND(EC_CMD_REBOOT_EC, host_command_reboot, EC_VER_MASK(0)); int system_can_boot_ap(void) { int soc = -1; int pow = -1; #if defined(CONFIG_BATTERY) && \ defined(CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) /* Require a minimum battery level to power on. If battery isn't * present, battery_state_of_charge_abs returns false. */ if (battery_state_of_charge_abs(&soc) == EC_SUCCESS && soc >= CONFIG_CHARGER_MIN_BAT_PCT_FOR_POWER_ON) return 1; #endif #if defined(CONFIG_CHARGE_MANAGER) && \ defined(CONFIG_CHARGER_MIN_POWER_MW_FOR_POWER_ON) pow = charge_manager_get_power_limit_uw() / 1000; if (pow >= CONFIG_CHARGER_MIN_POWER_MW_FOR_POWER_ON) return 1; #else /* For fixed AC system */ return 1; #endif CPRINTS("Not enough power to boot (%d %%, %d mW)", soc, pow); return 0; } #ifdef CONFIG_SERIALNO_LEN /* By default, read serial number from flash, can be overridden. */ __overridable const char *board_read_serial(void) { if (IS_ENABLED(CONFIG_FLASH_PSTATE) && IS_ENABLED(CONFIG_FLASH_PSTATE_BANK)) return crec_flash_read_pstate_serial(); else if (IS_ENABLED(CONFIG_OTP)) return otp_read_serial(); else return ""; } __overridable int board_write_serial(const char *serialno) { if (IS_ENABLED(CONFIG_FLASH_PSTATE) && IS_ENABLED(CONFIG_FLASH_PSTATE_BANK)) return crec_flash_write_pstate_serial(serialno); else if (IS_ENABLED(CONFIG_OTP)) return otp_write_serial(serialno); else return EC_ERROR_UNIMPLEMENTED; } #endif /* CONFIG_SERIALNO_LEN */ #ifdef CONFIG_MAC_ADDR_LEN /* By default, read MAC address from flash, can be overridden. */ __overridable const char *board_read_mac_addr(void) { if (IS_ENABLED(CONFIG_FLASH_PSTATE) && IS_ENABLED(CONFIG_FLASH_PSTATE_BANK)) return crec_flash_read_pstate_mac_addr(); else return ""; } /* By default, write MAC address from flash, can be overridden. */ __overridable int board_write_mac_addr(const char *mac_addr) { if (IS_ENABLED(CONFIG_FLASH_PSTATE) && IS_ENABLED(CONFIG_FLASH_PSTATE_BANK)) return crec_flash_write_pstate_mac_addr(mac_addr); else return EC_ERROR_UNIMPLEMENTED; } #endif /* CONFIG_MAC_ADDR_LEN */ __attribute__((weak)) void clock_enable_module(enum module_id module, int enable) { /* * Default weak implementation - for chips that don't support this * function. */ } __test_only void system_common_reset_state(void) { jdata = 0; reset_flags = 0; jumped_to_image = 0; }