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add nitropad-shutdown.sh for EC based poweroff

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Markus Meissner 2023-04-25 14:53:11 +02:00
parent 033333f288
commit 902866cc29
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GPG Key ID: 44CB2D868DD16BDA
1 changed files with 36 additions and 0 deletions
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36
initrd/bin/nitropad-shutdown.sh Executable file
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@ -0,0 +1,36 @@
#!/bin/ash
# Method to access IT5570 IO Depth 2 registers
it5570_i2ec() {
# TODO: Use /dev/port instead of iotools
# Address high byte
iotools io_write8 0x2e 0x2e
iotools io_write8 0x2f 0x11
iotools io_write8 0x2e 0x2f
iotools io_write8 0x2f $(($2>>8 & 0xff))
# Address low byte
iotools io_write8 0x2e 0x2e
iotools io_write8 0x2f 0x10
iotools io_write8 0x2e 0x2f
iotools io_write8 0x2f $(($2 & 0xff))
# Data
iotools io_write8 0x2e 0x2e
iotools io_write8 0x2f 0x12
iotools io_write8 0x2e 0x2f
case $1 in
"r")
iotools io_read8 0x2f
;;
"w")
iotools io_write8 0x2f "$3"
;;
esac
}
# shut down using EC external watchdog reset
it5570_i2ec w 0x1f01 0x20
it5570_i2ec w 0x1f07 0x01