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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /power/intel_x86.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-252457d4b21f46889eebad61d4c0a65331919cec.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'power/intel_x86.c')
-rw-r--r--power/intel_x86.c679
1 files changed, 0 insertions, 679 deletions
diff --git a/power/intel_x86.c b/power/intel_x86.c
deleted file mode 100644
index c4aae9db81..0000000000
--- a/power/intel_x86.c
+++ /dev/null
@@ -1,679 +0,0 @@
-/* Copyright 2016 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.
- */
-
-/* Intel X86 chipset power control module for Chrome EC */
-
-#include "board_config.h"
-#include "charge_state.h"
-#include "chipset.h"
-#include "console.h"
-#include "ec_commands.h"
-#include "gpio.h"
-#include "hooks.h"
-#include "lpc.h"
-#include "power.h"
-#include "power/intel_x86.h"
-#include "power_button.h"
-#include "system.h"
-#include "task.h"
-#include "util.h"
-#include "vboot.h"
-#include "wireless.h"
-
-/* Console output macros */
-#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args)
-#define CPRINTF(format, args...) cprintf(CC_CHIPSET, format, ## args)
-
-enum sys_sleep_state {
- SYS_SLEEP_S3,
- SYS_SLEEP_S4,
-#ifdef CONFIG_POWER_S0IX
- SYS_SLEEP_S0IX,
-#endif
-};
-
-static const int sleep_sig[] = {
- [SYS_SLEEP_S3] = SLP_S3_SIGNAL_L,
- [SYS_SLEEP_S4] = SLP_S4_SIGNAL_L,
-#ifdef CONFIG_POWER_S0IX
- [SYS_SLEEP_S0IX] = GPIO_PCH_SLP_S0_L,
-#endif
-};
-
-static int power_s5_up; /* Chipset is sequencing up or down */
-
-#ifdef CONFIG_CHARGER
-/* Flag to indicate if power up was inhibited due to low battery SOC level. */
-static int power_up_inhibited;
-
-/*
- * Check if AP power up should be inhibited.
- * 0 = Ok to boot up AP
- * 1 = AP power up is inhibited.
- */
-static int is_power_up_inhibited(void)
-{
- /* Defaulting to power button not pressed. */
- const int power_button_pressed = 0;
-
- return charge_prevent_power_on(power_button_pressed) ||
- charge_want_shutdown();
-}
-
-static void power_up_inhibited_cb(void)
-{
- if (!power_up_inhibited)
- return;
-
- if (is_power_up_inhibited()) {
- CPRINTS("power-up still inhibited");
- return;
- }
-
- CPRINTS("Battery SOC ok to boot AP!");
- power_up_inhibited = 0;
-
- chipset_exit_hard_off();
-}
-DECLARE_HOOK(HOOK_BATTERY_SOC_CHANGE, power_up_inhibited_cb, HOOK_PRIO_DEFAULT);
-#endif
-
-/* Get system sleep state through GPIOs or VWs */
-static inline int chipset_get_sleep_signal(enum sys_sleep_state state)
-{
- return power_signal_get_level(sleep_sig[state]);
-}
-
-#ifdef CONFIG_BOARD_HAS_RTC_RESET
-static void intel_x86_rtc_reset(void)
-{
- CPRINTS("Asserting RTCRST# to PCH");
- gpio_set_level(GPIO_PCH_RTCRST, 1);
- udelay(100);
- gpio_set_level(GPIO_PCH_RTCRST, 0);
-}
-
-static enum power_state power_wait_s5_rtc_reset(void)
-{
- static int s5_exit_tries;
-
- /* Wait for S5 exit and then attempt RTC reset */
- while ((power_get_signals() & IN_PCH_SLP_S4_DEASSERTED) == 0) {
- /* Handle RSMRST passthru event while waiting */
- common_intel_x86_handle_rsmrst(POWER_S5);
- if (task_wait_event(SECOND*4) == TASK_EVENT_TIMER) {
- CPRINTS("timeout waiting for S5 exit");
- chipset_force_g3();
-
- /* Assert RTCRST# and retry 5 times */
- intel_x86_rtc_reset();
-
- if (++s5_exit_tries > 4) {
- s5_exit_tries = 0;
- return POWER_G3; /* Stay off */
- }
-
- udelay(10 * MSEC);
- return POWER_G3S5; /* Power up again */
- }
- }
-
- s5_exit_tries = 0;
- return POWER_S5S3; /* Power up to next state */
-}
-#endif
-
-#ifdef CONFIG_POWER_S0IX
-/*
- * Backup copies of SCI and SMI mask to preserve across S0ix suspend/resume
- * cycle. If the host uses S0ix, BIOS is not involved during suspend and resume
- * operations and hence SCI/SMI masks are programmed only once during boot-up.
- *
- * These backup variables are set whenever host expresses its interest to
- * enter S0ix and then lpc_host_event_mask for SCI and SMI are cleared. When
- * host resumes from S0ix, masks from backup variables are copied over to
- * lpc_host_event_mask for SCI and SMI.
- */
-static host_event_t backup_sci_mask;
-static host_event_t backup_smi_mask;
-
-/*
- * Clear host event masks for SMI and SCI when host is entering S0ix. This is
- * done to prevent any SCI/SMI interrupts when the host is in suspend. Since
- * BIOS is not involved in the suspend path, EC needs to take care of clearing
- * these masks.
- */
-static void lpc_s0ix_suspend_clear_masks(void)
-{
- backup_sci_mask = lpc_get_host_event_mask(LPC_HOST_EVENT_SCI);
- backup_smi_mask = lpc_get_host_event_mask(LPC_HOST_EVENT_SMI);
-
- lpc_set_host_event_mask(LPC_HOST_EVENT_SCI, 0);
- lpc_set_host_event_mask(LPC_HOST_EVENT_SMI, 0);
-}
-
-/*
- * Restore host event masks for SMI and SCI when host exits S0ix. This is done
- * because BIOS is not involved in the resume path and so EC needs to restore
- * the masks from backup variables.
- */
-static void lpc_s0ix_resume_restore_masks(void)
-{
- /*
- * No need to restore SCI/SMI masks if both backup_sci_mask and
- * backup_smi_mask are zero. This indicates that there was a failure to
- * enter S0ix(SLP_S0# assertion) and hence SCI/SMI masks were never
- * backed up.
- */
- if (!backup_sci_mask && !backup_smi_mask)
- return;
-
- lpc_set_host_event_mask(LPC_HOST_EVENT_SCI, backup_sci_mask);
- lpc_set_host_event_mask(LPC_HOST_EVENT_SMI, backup_smi_mask);
-
- backup_sci_mask = backup_smi_mask = 0;
-}
-
-static void lpc_s0ix_hang_detected(void)
-{
- /*
- * Wake up the AP so they don't just chill in a non-suspended state and
- * burn power. Overload a vaguely related event bit since event bits are
- * at a premium. If the system never entered S0ix, then manually set the
- * wake mask to pretend it did, so that the hang detect event wakes the
- * system.
- */
- if (power_get_state() == POWER_S0) {
- host_event_t sleep_wake_mask;
-
- get_lazy_wake_mask(POWER_S0ix, &sleep_wake_mask);
- lpc_set_host_event_mask(LPC_HOST_EVENT_WAKE, sleep_wake_mask);
- }
-
- CPRINTS("Warning: Detected sleep hang! Waking host up!");
- host_set_single_event(EC_HOST_EVENT_HANG_DETECT);
-}
-
-static void handle_chipset_suspend(void)
-{
- /* Clear masks before any hooks are run for suspend. */
- lpc_s0ix_suspend_clear_masks();
-}
-DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, handle_chipset_suspend, HOOK_PRIO_FIRST);
-
-static void handle_chipset_reset(void)
-{
- if (chipset_in_state(CHIPSET_STATE_STANDBY)) {
- CPRINTS("chipset reset: exit s0ix");
- power_reset_host_sleep_state();
- task_wake(TASK_ID_CHIPSET);
- }
-}
-DECLARE_HOOK(HOOK_CHIPSET_RESET, handle_chipset_reset, HOOK_PRIO_FIRST);
-
-void power_reset_host_sleep_state(void)
-{
- power_set_host_sleep_state(HOST_SLEEP_EVENT_DEFAULT_RESET);
- sleep_reset_tracking();
- power_chipset_handle_host_sleep_event(HOST_SLEEP_EVENT_DEFAULT_RESET,
- NULL);
-}
-
-#endif /* CONFIG_POWER_S0IX */
-
-void chipset_throttle_cpu(int throttle)
-{
-#ifdef CONFIG_CPU_PROCHOT_ACTIVE_LOW
- throttle = !throttle;
-#endif /* CONFIG_CPU_PROCHOT_ACTIVE_LOW */
- if (chipset_in_state(CHIPSET_STATE_ON))
- gpio_set_level(GPIO_CPU_PROCHOT, throttle);
-}
-
-enum power_state power_chipset_init(void)
-{
- CPRINTS("%s: power_signal=0x%x", __func__, power_get_signals());
-
- if (!system_jumped_to_this_image())
- return POWER_G3;
- /*
- * We are here as RW. We need to handle the following cases:
- *
- * 1. Late sysjump by software sync. AP is in S0.
- * 2. Shutting down in recovery mode then sysjump by EFS2. AP is in S5
- * and expected to sequence down.
- * 3. Rebooting from recovery mode then sysjump by EFS2. AP is in S5
- * and expected to sequence up.
- * 4. RO jumps to RW from main() by EFS2. (a.k.a. power on reset, cold
- * reset). AP is in G3.
- */
- if ((power_get_signals() & IN_ALL_S0) == IN_ALL_S0) {
- /* case #1. Disable idle task deep sleep when in S0. */
- disable_sleep(SLEEP_MASK_AP_RUN);
- CPRINTS("already in S0");
- return POWER_S0;
- }
- if ((power_get_signals() & CHIPSET_G3S5_POWERUP_SIGNAL)
- == CHIPSET_G3S5_POWERUP_SIGNAL) {
- /* case #2 & #3 */
- CPRINTS("already in S5");
- return POWER_S5;
- }
- /* case #4 */
- chipset_force_g3();
- return POWER_G3;
-}
-
-enum power_state common_intel_x86_power_handle_state(enum power_state state)
-{
- switch (state) {
- case POWER_G3:
- break;
-
- case POWER_S5:
-#ifdef CONFIG_BOARD_HAS_RTC_RESET
- /* Wait for S5 exit and attempt RTC reset if supported */
- if (power_s5_up)
- return power_wait_s5_rtc_reset();
-#endif
-
- if (chipset_get_sleep_signal(SYS_SLEEP_S4) == 1)
- return POWER_S5S3; /* Power up to next state */
- break;
-
- case POWER_S3:
- if (!power_has_signals(IN_PGOOD_ALL_CORE)) {
- /* Required rail went away */
- chipset_force_shutdown(CHIPSET_SHUTDOWN_POWERFAIL);
- return POWER_S3S5;
- } else if (chipset_get_sleep_signal(SYS_SLEEP_S3) == 1) {
- /* Power up to next state */
- return POWER_S3S0;
- } else if (chipset_get_sleep_signal(SYS_SLEEP_S4) == 0) {
- /* Power down to next state */
- return POWER_S3S5;
- }
- break;
-
- case POWER_S0:
- if (!power_has_signals(IN_PGOOD_ALL_CORE)) {
- chipset_force_shutdown(CHIPSET_SHUTDOWN_POWERFAIL);
- return POWER_S0S3;
- } else if (chipset_get_sleep_signal(SYS_SLEEP_S3) == 0) {
- /* Power down to next state */
- return POWER_S0S3;
-#ifdef CONFIG_POWER_S0IX
- /*
- * SLP_S0 may assert in system idle scenario without a kernel
- * freeze call. This may cause interrupt storm since there is
- * no freeze/unfreeze of threads/process in the idle scenario.
- * Ignore the SLP_S0 assertions in idle scenario by checking
- * the host sleep state.
- */
- } else if (power_get_host_sleep_state()
- == HOST_SLEEP_EVENT_S0IX_SUSPEND &&
- chipset_get_sleep_signal(SYS_SLEEP_S0IX) == 0) {
- return POWER_S0S0ix;
- } else {
- sleep_notify_transition(SLEEP_NOTIFY_RESUME,
- HOOK_CHIPSET_RESUME);
-#endif
- }
-
- break;
-
-#ifdef CONFIG_POWER_S0IX
- case POWER_S0ix:
- /* System in S0 only if SLP_S0 and SLP_S3 are de-asserted */
- if ((chipset_get_sleep_signal(SYS_SLEEP_S0IX) == 1) &&
- (chipset_get_sleep_signal(SYS_SLEEP_S3) == 1)) {
- return POWER_S0ixS0;
- } else if (!power_has_signals(IN_PGOOD_ALL_CORE)) {
- return POWER_S0;
- }
-
- break;
-#endif
-
- case POWER_G3S5:
- if (intel_x86_wait_power_up_ok() != EC_SUCCESS) {
- chipset_force_shutdown(
- CHIPSET_SHUTDOWN_BATTERY_INHIBIT);
- return POWER_G3;
- }
-#ifdef CONFIG_CHIPSET_HAS_PRE_INIT_CALLBACK
- /*
- * Callback to do pre-initialization within the context of
- * chipset task.
- */
- chipset_pre_init_callback();
-#endif
-
- if (power_wait_signals(CHIPSET_G3S5_POWERUP_SIGNAL)) {
- chipset_force_shutdown(CHIPSET_SHUTDOWN_WAIT);
- return POWER_G3;
- }
-
- power_s5_up = 1;
- return POWER_S5;
-
- case POWER_S5S3:
- if (!power_has_signals(IN_PGOOD_ALL_CORE)) {
- /* Required rail went away */
- chipset_force_shutdown(CHIPSET_SHUTDOWN_POWERFAIL);
- return POWER_S5G3;
- }
-
- /* Call hooks now that rails are up */
- hook_notify(HOOK_CHIPSET_STARTUP);
-
-#ifdef CONFIG_POWER_S0IX
- /*
- * Clearing the S0ix flag on the path to S0
- * to handle any reset conditions.
- */
- power_reset_host_sleep_state();
-#endif
- return POWER_S3;
-
- case POWER_S3S0:
- if (!power_has_signals(IN_PGOOD_ALL_CORE)) {
- /* Required rail went away */
- chipset_force_shutdown(CHIPSET_SHUTDOWN_POWERFAIL);
- return POWER_S3S5;
- }
-
- /* Enable wireless */
- wireless_set_state(WIRELESS_ON);
-
- lpc_s3_resume_clear_masks();
-
- /* Call hooks now that rails are up */
- hook_notify(HOOK_CHIPSET_RESUME);
-
- /*
- * Disable idle task deep sleep. This means that the low
- * power idle task will not go into deep sleep while in S0.
- */
- disable_sleep(SLEEP_MASK_AP_RUN);
-
- /*
- * Throttle CPU if necessary. This should only be asserted
- * when +VCCP is powered (it is by now).
- */
-#ifdef CONFIG_CPU_PROCHOT_ACTIVE_LOW
- gpio_set_level(GPIO_CPU_PROCHOT, 1);
-#else
- gpio_set_level(GPIO_CPU_PROCHOT, 0);
-#endif /* CONFIG_CPU_PROCHOT_ACTIVE_LOW */
-
- return POWER_S0;
-
- case POWER_S0S3:
- /* Call hooks before we remove power rails */
- hook_notify(HOOK_CHIPSET_SUSPEND);
-
- /* Suspend wireless */
- wireless_set_state(WIRELESS_SUSPEND);
-
- /*
- * Enable idle task deep sleep. Allow the low power idle task
- * to go into deep sleep in S3 or lower.
- */
- enable_sleep(SLEEP_MASK_AP_RUN);
-
-#ifdef CONFIG_POWER_S0IX
- /* re-init S0ix flag */
- power_reset_host_sleep_state();
-#endif
- return POWER_S3;
-
-#ifdef CONFIG_POWER_S0IX
- case POWER_S0S0ix:
- /*
- * Call hooks only if we haven't notified listeners of S0ix
- * suspend.
- */
- sleep_notify_transition(SLEEP_NOTIFY_SUSPEND,
- HOOK_CHIPSET_SUSPEND);
- sleep_suspend_transition();
-
- /*
- * Enable idle task deep sleep. Allow the low power idle task
- * to go into deep sleep in S0ix.
- */
- enable_sleep(SLEEP_MASK_AP_RUN);
- return POWER_S0ix;
-
- case POWER_S0ixS0:
- /*
- * Disable idle task deep sleep. This means that the low
- * power idle task will not go into deep sleep while in S0.
- */
- disable_sleep(SLEEP_MASK_AP_RUN);
-
- sleep_resume_transition();
- return POWER_S0;
-#endif
-
- case POWER_S3S5:
- /* Call hooks before we remove power rails */
- hook_notify(HOOK_CHIPSET_SHUTDOWN);
-
- /* Disable wireless */
- wireless_set_state(WIRELESS_OFF);
-
- /* Call hooks after we remove power rails */
- hook_notify(HOOK_CHIPSET_SHUTDOWN_COMPLETE);
-
- /* Always enter into S5 state. The S5 state is required to
- * correctly handle global resets which have a bit of delay
- * while the SLP_Sx_L signals are asserted then deasserted.
- */
- power_s5_up = 0;
- return POWER_S5;
-
- case POWER_S5G3:
- return chipset_force_g3();
-
- default:
- break;
- }
-
- return state;
-}
-
-void intel_x86_rsmrst_signal_interrupt(enum gpio_signal signal)
-{
- int rsmrst_in = gpio_get_level(GPIO_RSMRST_L_PGOOD);
- int rsmrst_out = gpio_get_level(GPIO_PCH_RSMRST_L);
-
- /*
- * This function is called when rsmrst changes state. If rsmrst
- * has been asserted (high -> low) then pass this new state to PCH.
- */
- if (!rsmrst_in && (rsmrst_in != rsmrst_out))
- gpio_set_level(GPIO_PCH_RSMRST_L, rsmrst_in);
-
- /*
- * Call the main power signal interrupt handler to wake up the chipset
- * task which handles low->high rsmrst pass through.
- */
- power_signal_interrupt(signal);
-}
-
-__overridable void board_before_rsmrst(int rsmrst)
-{
-}
-
-__overridable void board_after_rsmrst(int rsmrst)
-{
-}
-
-void common_intel_x86_handle_rsmrst(enum power_state state)
-{
- /*
- * Pass through RSMRST asynchronously, as PCH may not react
- * immediately to power changes.
- */
- int rsmrst_in = gpio_get_level(GPIO_RSMRST_L_PGOOD);
- int rsmrst_out = gpio_get_level(GPIO_PCH_RSMRST_L);
-
- /* Nothing to do. */
- if (rsmrst_in == rsmrst_out)
- return;
-
- board_before_rsmrst(rsmrst_in);
-
-#ifdef CONFIG_CHIPSET_APL_GLK
- /* Only passthrough RSMRST_L de-assertion on power up */
- if (rsmrst_in && !power_s5_up)
- return;
-#elif defined(CONFIG_CHIPSET_X86_RSMRST_DELAY)
- /*
- * Wait at least 10ms between power signals going high
- * and deasserting RSMRST to PCH.
- */
- if (rsmrst_in)
- msleep(10);
-#endif
-
- gpio_set_level(GPIO_PCH_RSMRST_L, rsmrst_in);
-
- CPRINTS("Pass through GPIO_RSMRST_L_PGOOD: %d", rsmrst_in);
-
- board_after_rsmrst(rsmrst_in);
-}
-
-#ifdef CONFIG_POWER_TRACK_HOST_SLEEP_STATE
-
-__overridable void power_board_handle_host_sleep_event(
- enum host_sleep_event state)
-{
- /* Default weak implementation -- no action required. */
-}
-
-__override void power_chipset_handle_host_sleep_event(
- enum host_sleep_event state,
- struct host_sleep_event_context *ctx)
-{
- power_board_handle_host_sleep_event(state);
-
-#ifdef CONFIG_POWER_S0IX
- if (state == HOST_SLEEP_EVENT_S0IX_SUSPEND) {
- /*
- * Indicate to power state machine that a new host event for
- * s0ix/s3 suspend has been received and so chipset suspend
- * notification needs to be sent to listeners.
- */
- sleep_set_notify(SLEEP_NOTIFY_SUSPEND);
-
- sleep_start_suspend(ctx, lpc_s0ix_hang_detected);
- power_signal_enable_interrupt(sleep_sig[SYS_SLEEP_S0IX]);
- } else if (state == HOST_SLEEP_EVENT_S0IX_RESUME) {
- /*
- * Wake up chipset task and indicate to power state machine that
- * listeners need to be notified of chipset resume.
- */
- sleep_set_notify(SLEEP_NOTIFY_RESUME);
- task_wake(TASK_ID_CHIPSET);
- lpc_s0ix_resume_restore_masks();
- power_signal_disable_interrupt(sleep_sig[SYS_SLEEP_S0IX]);
- sleep_complete_resume(ctx);
- /*
- * If the sleep signal timed out and never transitioned, then
- * the wake mask was modified to its suspend state (S0ix), so
- * that the event wakes the system. Explicitly restore the wake
- * mask to its S0 state now.
- */
- power_update_wake_mask();
- } else if (state == HOST_SLEEP_EVENT_DEFAULT_RESET) {
- power_signal_disable_interrupt(sleep_sig[SYS_SLEEP_S0IX]);
- }
-#endif
-
-}
-
-#endif
-
-__overridable void intel_x86_sys_reset_delay(void)
-{
- /*
- * Debounce time for SYS_RESET_L is 16 ms. Wait twice that period
- * to be safe.
- */
- udelay(32 * MSEC);
-}
-
-void chipset_reset(enum chipset_reset_reason reason)
-{
- /*
- * Irrespective of cold_reset value, always toggle SYS_RESET_L to
- * perform a chipset reset. RCIN# which was used earlier to trigger
- * a warm reset is known to not work in certain cases where the CPU
- * is in a bad state (crbug.com/721853).
- *
- * The EC cannot control warm vs cold reset of the chipset using
- * SYS_RESET_L; it's more of a request.
- */
- CPRINTS("%s: %d", __func__, reason);
-
- /*
- * Toggling SYS_RESET_L will not have any impact when it's already
- * low (i,e. Chipset is in reset state).
- */
- if (gpio_get_level(GPIO_SYS_RESET_L) == 0) {
- CPRINTS("Chipset is in reset state");
- return;
- }
-
- report_ap_reset(reason);
-
- gpio_set_level(GPIO_SYS_RESET_L, 0);
- intel_x86_sys_reset_delay();
- gpio_set_level(GPIO_SYS_RESET_L, 1);
-}
-
-enum ec_error_list intel_x86_wait_power_up_ok(void)
-{
-#ifdef CONFIG_CHARGER
- int tries = 0;
-
- /*
- * Allow charger to be initialized for up to defined tries,
- * in case we're trying to boot the AP with no battery.
- */
- while ((tries < CHARGER_INITIALIZED_TRIES) &&
- is_power_up_inhibited()) {
- msleep(CHARGER_INITIALIZED_DELAY_MS);
- tries++;
- }
-
- /*
- * Return to G3 if battery level is too low. Set
- * power_up_inhibited in order to check the eligibility to boot
- * AP up after battery SOC changes.
- */
- if (tries == CHARGER_INITIALIZED_TRIES) {
- CPRINTS("power-up inhibited");
- power_up_inhibited = 1;
- return EC_ERROR_TIMEOUT;
- }
-
- power_up_inhibited = 0;
-#endif
-
-#if defined(CONFIG_VBOOT_EFS) || defined(CONFIG_VBOOT_EFS2)
- /*
- * We have to test power readiness here (instead of S5->S3)
- * because when entering S5, EC enables EC_ROP_SLP_SUS pin
- * which causes (short-powered) system to brown out.
- */
- while (!system_can_boot_ap())
- msleep(200);
-#endif
-
- return EC_SUCCESS;
-}