166 lines
4.6 KiB
C
166 lines
4.6 KiB
C
/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <debug.h>
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#include <platform/iomap.h>
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#include <reg.h>
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#include <target.h>
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#include <platform.h>
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#include <pm8x41.h>
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#include <pm8x41_hw.h>
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#include <scm.h>
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#include <stdlib.h>
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#include <reboot.h>
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#include <qtimer.h>
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#if USER_FORCE_RESET_SUPPORT
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/* Return 1 if it is a force resin triggered by user. */
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uint32_t is_user_force_reset(void)
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{
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uint8_t poff_reason1 = pm8x41_get_pon_poff_reason1();
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uint8_t poff_reason2 = pm8x41_get_pon_poff_reason2();
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dprintf(SPEW, "poff_reason1: %d\n", poff_reason1);
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dprintf(SPEW, "poff_reason2: %d\n", poff_reason2);
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if (pm8x41_get_is_cold_boot() && (poff_reason1 == KPDPWR_AND_RESIN ||
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poff_reason2 == STAGE3))
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return 1;
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else
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return 0;
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}
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#endif
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unsigned check_reboot_mode(void)
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{
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uint32_t restart_reason = 0;
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/* Read reboot reason and scrub it */
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restart_reason = readl(RESTART_REASON_ADDR);
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writel(0x00, RESTART_REASON_ADDR);
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return restart_reason;
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}
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unsigned check_hard_reboot_mode(void)
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{
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uint8_t hard_restart_reason = 0;
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/* Read reboot reason and scrub it
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* Bit-2 to bit-7 of SOFT_RB_SPARE for hard reset reason
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*/
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hard_restart_reason = REG_READ(PON_SOFT_RB_SPARE);
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REG_WRITE(PON_SOFT_RB_SPARE, hard_restart_reason & 0x03);
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/* Extract the bits 5 to 7 and return */
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return hard_restart_reason & 0xFC;
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}
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/* Return true if it is triggered by alarm. */
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uint32_t check_alarm_boot(void)
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{
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/* Check reboot reason and power on reason */
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if (pm8x41_get_is_cold_boot()) {
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if (pm8x41_get_pon_reason() == RTC_TRG)
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return 1;
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} else {
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if (readl(RESTART_REASON_ADDR) == ALARM_BOOT)
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return 1;
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}
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return 0;
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}
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void reboot_device(unsigned reboot_reason)
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{
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uint8_t reset_type = 0;
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int ret = 0;
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#if USE_PON_REBOOT_REG
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uint8_t value;
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#endif
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/* Need to clear the SW_RESET_ENTRY register and
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* write to the BOOT_MISC_REG for known reset cases
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*/
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if(reboot_reason != DLOAD)
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scm_dload_mode(NORMAL_MODE);
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#if USE_PON_REBOOT_REG
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value = REG_READ(PON_SOFT_RB_SPARE);
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value |= reboot_reason;
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REG_WRITE(PON_SOFT_RB_SPARE, value);
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#else
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writel(reboot_reason, RESTART_REASON_ADDR);
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#endif
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/* For Dload cases do a warm reset
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* For other cases do a hard reset
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*/
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#if USE_PON_REBOOT_REG
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if(reboot_reason == DLOAD)
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#else
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if(reboot_reason == FASTBOOT_MODE || (reboot_reason == DLOAD) || (reboot_reason == RECOVERY_MODE))
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#endif
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reset_type = PON_PSHOLD_WARM_RESET;
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else
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reset_type = PON_PSHOLD_HARD_RESET;
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pmic_reset_configure(reset_type);
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/* Force spmi shutdown to avoid spmi lock up on some pmics */
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ret = is_scm_call_available(SCM_SVC_PWR, SCM_IO_DISABLE_PMIC_ARBITER);
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if ( ret > 0)
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{
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ret = scm_halt_pmic_arbiter();
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if (ret)
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dprintf(CRITICAL , "Failed to halt pmic arbiter: %d\n", ret);
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}
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/* Drop PS_HOLD for MSM */
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writel(0x00, MPM2_MPM_PS_HOLD);
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mdelay(5000);
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dprintf(CRITICAL, "Rebooting failed\n");
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}
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void shutdown_device()
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{
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dprintf(CRITICAL, "Going down for shutdown.\n");
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/* Configure PMIC for shutdown. */
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pmic_reset_configure(PON_PSHOLD_SHUTDOWN);
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/* Drop PS_HOLD for MSM */
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writel(0x00, MPM2_MPM_PS_HOLD);
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mdelay(5000);
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dprintf(CRITICAL, "Shutdown failed\n");
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ASSERT(0);
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}
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