| /* Copyright (c) 2015, The Linux Foundation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <debug.h> |
| #include <platform/iomap.h> |
| #include <reg.h> |
| #include <target.h> |
| #include <platform.h> |
| #include <pm8x41.h> |
| #include <pm8x41_hw.h> |
| #include <scm.h> |
| #include <stdlib.h> |
| #include <reboot.h> |
| #include <qtimer.h> |
| |
| #if USER_FORCE_RESET_SUPPORT |
| /* Return 1 if it is a force resin triggered by user. */ |
| uint32_t is_user_force_reset(void) |
| { |
| uint8_t poff_reason1 = pm8x41_get_pon_poff_reason1(); |
| uint8_t poff_reason2 = pm8x41_get_pon_poff_reason2(); |
| |
| dprintf(SPEW, "poff_reason1: %d\n", poff_reason1); |
| dprintf(SPEW, "poff_reason2: %d\n", poff_reason2); |
| if (pm8x41_get_is_cold_boot() && (poff_reason1 == KPDPWR_AND_RESIN || |
| poff_reason2 == STAGE3)) |
| return 1; |
| else |
| return 0; |
| } |
| #endif |
| |
| unsigned check_reboot_mode(void) |
| { |
| uint32_t restart_reason = 0; |
| |
| /* Read reboot reason and scrub it */ |
| restart_reason = readl(RESTART_REASON_ADDR); |
| writel(0x00, RESTART_REASON_ADDR); |
| |
| return restart_reason; |
| } |
| |
| unsigned check_hard_reboot_mode(void) |
| { |
| uint8_t hard_restart_reason = 0; |
| uint8_t value = 0; |
| |
| /* Read reboot reason and scrub it |
| * Bit-5, bit-6 and bit-7 of SOFT_RB_SPARE for hard reset reason |
| */ |
| value = REG_READ(PON_SOFT_RB_SPARE); |
| hard_restart_reason = value >> 5; |
| REG_WRITE(PON_SOFT_RB_SPARE, value & 0x1f); |
| |
| return hard_restart_reason; |
| } |
| |
| /* Return true if it is triggered by alarm. */ |
| uint32_t check_alarm_boot(void) |
| { |
| /* Check reboot reason and power on reason */ |
| if (pm8x41_get_is_cold_boot()) { |
| if (pm8x41_get_pon_reason() == RTC_TRG) |
| return 1; |
| } else { |
| if (readl(RESTART_REASON_ADDR) == ALARM_BOOT) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| void reboot_device(unsigned reboot_reason) |
| { |
| uint8_t reset_type = 0; |
| int ret = 0; |
| #if USE_PON_REBOOT_REG |
| uint8_t value; |
| #endif |
| |
| /* Need to clear the SW_RESET_ENTRY register and |
| * write to the BOOT_MISC_REG for known reset cases |
| */ |
| if(reboot_reason != DLOAD) |
| scm_dload_mode(NORMAL_MODE); |
| |
| #if USE_PON_REBOOT_REG |
| value = REG_READ(PON_SOFT_RB_SPARE); |
| value |= ((reboot_reason << 5) & 0xff); |
| REG_WRITE(PON_SOFT_RB_SPARE, value); |
| #else |
| writel(reboot_reason, RESTART_REASON_ADDR); |
| #endif |
| /* For Dload cases do a warm reset |
| * For other cases do a hard reset |
| */ |
| #if USE_PON_REBOOT_REG |
| if(reboot_reason == DLOAD) |
| #else |
| if(reboot_reason == FASTBOOT_MODE || (reboot_reason == DLOAD) || (reboot_reason == RECOVERY_MODE)) |
| #endif |
| reset_type = PON_PSHOLD_WARM_RESET; |
| else |
| reset_type = PON_PSHOLD_HARD_RESET; |
| |
| pmic_reset_configure(reset_type); |
| |
| /* Force spmi shutdown to avoid spmi lock up on some pmics */ |
| ret = is_scm_call_available(SCM_SVC_PWR, SCM_IO_DISABLE_PMIC_ARBITER); |
| if ( ret > 0) |
| { |
| ret = scm_halt_pmic_arbiter(); |
| if (ret) |
| dprintf(CRITICAL , "Failed to halt pmic arbiter: %d\n", ret); |
| } |
| |
| /* Drop PS_HOLD for MSM */ |
| writel(0x00, MPM2_MPM_PS_HOLD); |
| |
| mdelay(5000); |
| |
| dprintf(CRITICAL, "Rebooting failed\n"); |
| } |
| |
| void shutdown_device() |
| { |
| dprintf(CRITICAL, "Going down for shutdown.\n"); |
| |
| /* Configure PMIC for shutdown. */ |
| pmic_reset_configure(PON_PSHOLD_SHUTDOWN); |
| |
| /* Drop PS_HOLD for MSM */ |
| writel(0x00, MPM2_MPM_PS_HOLD); |
| |
| mdelay(5000); |
| |
| dprintf(CRITICAL, "Shutdown failed\n"); |
| |
| ASSERT(0); |
| } |