oneechanhax/phunix
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Display fallback message in case poweroff fails (contributed by Feiran 'Fam' Zheng)

Browse Source
This commit is contained in:
Erik van der Kouwe 2010-08-02 14:40:26 +00:00
parent c7859a538c
commit ebec792700
1 changed files with 23 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
kernel/arch/i386/klib16.S
View File

@ -54,18 +54,41 @@ gate_A20:
mov $0x5301,%ax
mov $0x0,%bx
int 0x15
jc apm_err
/* Enable power management */
mov $0x5308,%ax
mov $0x1,%bx
mov $0x1,%cx
int 0x15
jc apm_err
/* Set power state to off */
mov $0x5307,%ax
mov $0x01,%bx
mov $0x3,%cx
int 0x15
jc apm_err
0: hlt
jmp 0b
poweroff_msg:
.ascii "You can poweroff the machine safely now"
poweroff_msg_end:
#define POWEROFF_MSG_LEN (poweroff_msg_end-poweroff_msg)
apm_err:
/* If APM can't perform the shutdown, print something to inform */
mov $0x02, %ax /* clear screen */
int $0x10
mov $(BIOS_POWEROFF_ENTRY >> 4), %ax
mov %ax, %es
mov $0x1301, %ax
mov $0x07, %bx
mov $POWEROFF_MSG_LEN, %cx
mov $0x0300, %dx
mov $(poweroff_msg - _poweroff16), %bp
int $0x10
0: hlt
jmp 0b