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openrisc: define nop command for simulator reboot

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The simulator defines `l.nop 1` for shutdown, but doesn't have anything
for reboot. Use 13 for this, which is currently unused, dubbed
`NOP_REBOOT`.

Cc: Stafford Horne <shorne@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Link: https://lore.kernel.org/all/YmnaDUpVI5ihgvg6@zx2c4.com/
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
This commit is contained in:
Jason A. Donenfeld 2022-04-28 13:11:39 +02:00 committed by Stafford Horne
parent 065b8ced7c
commit 635267b7a8
1 changed files with 2 additions and 0 deletions
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2
arch/openrisc/kernel/process.c
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@ -52,6 +52,8 @@ void machine_restart(char *cmd)
{
do_kernel_restart(cmd);
__asm__("l.nop 13");
/* Give a grace period for failure to restart of 1s */
mdelay(1000);