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Dell S6000: Fix reboot failure issue (#6656)

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Reboot command in Dell S6000 failed to reboot the switch. Added retry mechanism and CPU reset.
This commit is contained in:
Aravind Mani 2021-02-05 07:28:03 +05:30 committed by GitHub
parent 4a93bb297f
commit 85a6314424
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 13 deletions
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14
device/dell/x86_64-dell_s6000_s1220-r0/platform_reboot
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@ -4,10 +4,11 @@ import sys
import os import os
import struct import struct
PORT_RES = '/dev/port'
NVRAM_RES = '/dev/nvram' NVRAM_RES = '/dev/nvram'
COLD_RESET = 0xE # Cold Reset COLD_RESET = 0xE # Cold Reset
WARM_RESET = 0x6 # Warm Reset WARM_RESET = 0x6 # Warm Reset
RESET_REG = 0xCF9
def io_reg_write(resource, offset, val): def io_reg_write(resource, offset, val):
fd = os.open(resource, os.O_RDWR) fd = os.open(resource, os.O_RDWR)
@ -23,35 +24,34 @@ def io_reg_write(resource, offset, val):
return return
os.close(fd) os.close(fd)
def power_reset(val): def power_reset(val):
with open('/sys/devices/platform/dell-s6000-cpld.0/power_reset', 'w') as p: with open('/sys/devices/platform/dell-s6000-cpld.0/power_reset', 'w') as p:
p.write(str(int(val)) + '\n') p.write(str(int(val)) + '\n')
p.flush() p.flush()
def gpio_direction(pin, direction): def gpio_direction(pin, direction):
kernpath = '/sys/class/gpio/gpio'+str(pin)+'/direction' kernpath = '/sys/class/gpio/gpio'+str(pin)+'/direction'
with open(('kernpath'), 'w') as p: with open(('kernpath'), 'w') as p:
p.write(str(direction) + '\n') p.write(str(direction) + '\n')
p.flush() p.flush()
def gpio_set(pin, value): def gpio_set(pin, value):
kernpath = '/sys/class/gpio/gpio'+str(pin)+'/value' kernpath = '/sys/class/gpio/gpio'+str(pin)+'/value'
with open(('kernpath'), 'w') as p: with open(('kernpath'), 'w') as p:
p.write(str(int(value)) + '\n') p.write(str(int(value)) + '\n')
p.flush() p.flush()
def gpio_export(value): def gpio_export(value):
with open('/sys/class/gpio/export', 'w') as p: with open('/sys/class/gpio/export', 'w') as p:
p.write(str(int(value)) + '\n') p.write(str(int(value)) + '\n')
p.flush() p.flush()
if __name__ == "__main__": if __name__ == "__main__":
retry_count = 0
io_reg_write(NVRAM_RES, 0x49, COLD_RESET) io_reg_write(NVRAM_RES, 0x49, COLD_RESET)
while retry_count < 3:
if not os.path.isdir("/sys/class/gpio/gpio10"): if not os.path.isdir("/sys/class/gpio/gpio10"):
gpio_export(10) gpio_export(10)
gpio_direction("10", "out") gpio_direction("10", "out")
@ -59,3 +59,5 @@ if __name__ == "__main__":
gpio_set("10", 1) gpio_set("10", 1)
gpio_set("10", 0) gpio_set("10", 0)
power_reset(1) power_reset(1)
retry_count += 1
io_reg_write(PORT_RES, RESET_REG, COLD_RESET)