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Dell S6000: Fix reboot failure issue #6656

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merged 1 commit into from
Feb 5, 2021
Merged

Dell S6000: Fix reboot failure issue #6656

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28 changes: 15 additions & 13 deletions device/dell/x86_64-dell_s6000_s1220-r0/platform_reboot
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Original file line number Diff line number Diff line change
Expand Up @@ -4,10 +4,11 @@ import sys
import os
import struct

PORT_RES = '/dev/port'
NVRAM_RES = '/dev/nvram'
COLD_RESET = 0xE # Cold Reset
WARM_RESET = 0x6 # Warm Reset

RESET_REG = 0xCF9

def io_reg_write(resource, offset, val):
fd = os.open(resource, os.O_RDWR)
Expand All @@ -23,39 +24,40 @@ def io_reg_write(resource, offset, val):
return
os.close(fd)


def power_reset(val):
with open('/sys/devices/platform/dell-s6000-cpld.0/power_reset', 'w') as p:
p.write(str(int(val)) + '\n')
p.flush()


def gpio_direction(pin, direction):
kernpath = '/sys/class/gpio/gpio'+str(pin)+'/direction'
with open(('kernpath'), 'w') as p:
p.write(str(direction) + '\n')
p.flush()


def gpio_set(pin, value):
kernpath = '/sys/class/gpio/gpio'+str(pin)+'/value'
with open(('kernpath'), 'w') as p:
p.write(str(int(value)) + '\n')
p.flush()


def gpio_export(value):
with open('/sys/class/gpio/export', 'w') as p:
p.write(str(int(value)) + '\n')
p.flush()


if __name__ == "__main__":

retry_count = 0
io_reg_write(NVRAM_RES, 0x49, COLD_RESET)
if not os.path.isdir("/sys/class/gpio/gpio10"):
gpio_export(10)
gpio_direction("10", "out")
# Toggle GPIO10 pin (to reset MUX)
gpio_set("10", 1)
gpio_set("10", 0)
power_reset(1)

while retry_count < 3:
if not os.path.isdir("/sys/class/gpio/gpio10"):
gpio_export(10)
gpio_direction("10", "out")
# Toggle GPIO10 pin (to reset MUX)
gpio_set("10", 1)
gpio_set("10", 0)
power_reset(1)
retry_count += 1
io_reg_write(PORT_RES, RESET_REG, COLD_RESET)