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Kunimitsu: implement x86 power cycle on EC reset

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Ported the patch from Glados.
 Change-Id: I7e971a03c8894e1cbf20aaad67903db2057aad41
 Reviewed-on: https://chromium-review.googlesource.com/295116

BUG=none
BRANCH=None
TEST=Manually tested on FAB4 prototype.
     'reboot' from EC console & 'ectool reboot_ec' from Kernel console
     cuts the DSW power rail while rebooting.

Change-Id: I235c5e4ff8ce77a604632b5d68da05ae31e925e9
Signed-off-by: Vijay Hiremath <vijay.p.hiremath@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/305581
Commit-Ready: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Tested-by: Vijay P Hiremath <vijay.p.hiremath@intel.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
This commit is contained in:
Vijay Hiremath
2015-09-15 15:48:44 -07:00
committed by chrome-bot
parent e0df5cbaf0
commit 3dcd8f6e3a
3 changed files with 40 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
board/kunimitsu/board.c
View File

@@ -555,3 +555,34 @@ static void board_chipset_shutdown(void)
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown,
HOOK_PRIO_DEFAULT);
#ifndef BOARD_KUNIMITSU_V3
/* Make the pmic re-sequence the power rails under these conditions. */
#define PMIC_RESET_FLAGS \
(RESET_FLAG_WATCHDOG | RESET_FLAG_SOFT | RESET_FLAG_HARD)
static void board_handle_reboot(void)
{
int flags;
if (system_jumped_to_this_image())
return;
/* Interrogate current reset flags from previous reboot. */
flags = system_get_reset_flags();
if (!(flags & PMIC_RESET_FLAGS))
return;
/* Preserve AP off request. */
if (flags & RESET_FLAG_AP_OFF)
chip_save_reset_flags(RESET_FLAG_AP_OFF);
ccprintf("Restarting system with PMIC.\n");
/* Flush console */
cflush();
/* Bring down all rails but RTC rail (including EC power). */
gpio_set_level(GPIO_LDO_EN, 1);
}
DECLARE_HOOK(HOOK_INIT, board_handle_reboot, HOOK_PRIO_FIRST);
#endif

1
board/kunimitsu/board.h
View File

@@ -46,7 +46,6 @@
/* PSYS register 8.6KOhm */
#define CHARGER_PSYS_REGISTER 8600
#endif
#define CONFIG_CMD_PSYS
/*
* PSYS gain = 1 / (PYSY register * (1.44 or 0.36) uA/W)
*/

10
board/kunimitsu/gpio.inc
View File

@@ -14,7 +14,11 @@ GPIO_INT(POWER_BUTTON_L, PIN(35), GPIO_INT_BOTH, power_button_interrupt)
GPIO_INT(RSMRST_L_PGOOD, PIN(63), GPIO_INT_BOTH, power_signal_interrupt)
GPIO_INT(PCH_SLP_S4_L, PIN(200), GPIO_INT_BOTH | GPIO_PULL_UP, power_signal_interrupt)
GPIO_INT(PCH_SLP_S3_L, PIN(206), GPIO_INT_BOTH | GPIO_PULL_UP, power_signal_interrupt)
#ifdef BOARD_KUNIMITSU_V3
GPIO_INT(PCH_SLP_S0_L, PIN(211), GPIO_INT_BOTH | GPIO_PULL_UP, power_signal_interrupt)
#else
GPIO_INT(PCH_SLP_S0_L, PIN(141), GPIO_INT_BOTH, power_signal_interrupt)
#endif
GPIO_INT(PCH_SLP_SUS_L, PIN(12), GPIO_INT_BOTH | GPIO_PULL_UP, power_signal_interrupt)
GPIO_INT(VOLUME_UP_L, PIN(31), GPIO_INT_BOTH | GPIO_PULL_UP, button_interrupt)
GPIO_INT(VOLUME_DOWN_L, PIN(47), GPIO_INT_BOTH | GPIO_PULL_UP, button_interrupt)
@@ -85,9 +89,13 @@ GPIO(NC_136, PIN(136), GPIO_INPUT | GPIO_PULL_UP) /* Reserved
#ifdef BOARD_KUNIMITSU_V3
GPIO(USB2_OTG_VBUSSENSE, PIN(140), GPIO_ODR_HIGH)
#endif
/* Sensor input for KB PROX - UNUSED */
GPIO(KB_PROX_INT_L, PIN(141), GPIO_INPUT)
#endif
#ifndef BOARD_KUNIMITSU_V3
/* Bring down all rails but RTC rail */
GPIO(LDO_EN, PIN(211), GPIO_OUT_LOW)
#endif
GPIO(PCH_RSMRST_L, PIN(143), GPIO_OUT_LOW)
/* prochot input from devices */
GPIO(PLATFORM_EC_PROCHOT, PIN(151), GPIO_INPUT)