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power: reset: reboot-mode: Register callback for kernel pre restart

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This patch register boot mode into kernel pre restart call chain
to support 'reset [cmd]'

e.g.

/# fiq
Welcome to fiq debugger mode
Enter ? to get command help
debug> help
FIQ Debugger commands:
 reset [<c>]   Hard reset with command <c>
debug>
debug> reset loader
DDR Version V1.04 20201030
DDR4, 328MHz
BW=32 Col=10 Bk=4 BG=2 CS0 Row=16 CS=1 Die BW=16 Size=2048MB
...
boot mode: loader
...
RKUSB: LUN 0, dev 0, hwpart 0, sector 0x0, count 0x1d1f000

Change-Id: Ic1792bdd0262c77a09fd780c7ac3e6d912b09008
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com>
This commit is contained in:
Sugar Zhang
2021-01-05 18:35:51 +08:00
committed by Tao Huang
parent 2c7919c02b
commit c0b196cd5b
1 changed files with 1 additions and 0 deletions
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1
drivers/power/reset/reboot-mode.c
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@@ -153,6 +153,7 @@ int reboot_mode_register(struct reboot_mode_driver *reboot)
reboot->reboot_notifier.notifier_call = reboot_mode_notify;
reboot->panic_notifier.notifier_call = reboot_mode_panic_notify;
register_reboot_notifier(&reboot->reboot_notifier);
register_pre_restart_handler(&reboot->reboot_notifier);
atomic_notifier_chain_register(&panic_notifier_list,
&reboot->panic_notifier);
ret = sysfs_create_file(kernel_kobj, &kobj_boot_mode.attr);