projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * linux/arch/mips/sni/process.c | |
| 3 | * | |
| 4 | * Reset a SNI machine. | |
| 5 | */ | |
| 6 | #include <asm/io.h> | |
| 7 | #include <asm/reboot.h> | |
| 1da177e4 LT |
8 | #include <asm/sni.h> |
| 9 | ||
| 10 | /* | |
| 11 | * This routine reboots the machine by asking the keyboard | |
| 12 | * controller to pulse the reset-line low. We try that for a while, | |
| 13 | * and if it doesn't work, we do some other stupid things. | |
| 14 | */ | |
| c066a32a | 15 | static inline void kb_wait(void) |
| 1da177e4 LT |
16 | { |
| 17 | int i; | |
| 18 | ||
| c066a32a | 19 | for (i = 0; i < 0x10000; i++) |
| 1da177e4 LT |
20 | if ((inb_p(0x64) & 0x02) == 0) |
| 21 | break; | |
| 22 | } | |
| 23 | ||
| 24 | /* XXX This ends up at the ARC firmware prompt ... */ | |
| 25 | void sni_machine_restart(char *command) | |
| 26 | { | |
| 27 | int i, j; | |
| 28 | ||
| 29 | /* This does a normal via the keyboard controller like a PC. | |
| 30 | We can do that easier ... */ | |
| 31 | local_irq_disable(); | |
| 32 | for (;;) { | |
| c066a32a | 33 | for (i = 0; i < 100; i++) { |
| 1da177e4 | 34 | kb_wait(); |
| c066a32a | 35 | for (j = 0; j < 100000 ; j++) |
| 1da177e4 | 36 | /* nothing */; |
| 21a151d8 | 37 | outb_p(0xfe, 0x64); /* pulse reset low */ |
| 1da177e4 LT |
38 | } |
| 39 | } | |
| 40 | } | |
| 41 | ||
| 1da177e4 LT |
42 | void sni_machine_power_off(void) |
| 43 | { | |
| 44 | *(volatile unsigned char *)PCIMT_CSWCSM = 0xfd; | |
| 45 | } |