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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* Project: OSLib |
| 2 | * Description: The OS Construction Kit |
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| 3 | * Date: 1.6.2000 |
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| 4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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| 5 | * |
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| 6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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| 7 | * low-level infrastructure for developing OS kernels and Embedded |
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| 8 | * Applications; it partially derives from the HARTIK project but it |
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| 9 | * currently is independently developed. |
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| 10 | * |
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| 11 | * OSLib is distributed under GPL License, and some of its code has |
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| 12 | * been derived from the Linux kernel source; also some important |
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| 13 | * ideas come from studying the DJGPP go32 extender. |
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| 14 | * |
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| 15 | * We acknowledge the Linux Community, Free Software Foundation, |
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| 16 | * D.J. Delorie and all the other developers who believe in the |
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| 17 | * freedom of software and ideas. |
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| 18 | * |
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| 19 | * For legalese, check out the included GPL license. |
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| 20 | */ |
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| 21 | |||
| 22 | /* Reset (or halt...) the system */ |
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| 23 | |||
| 24 | #include <ll/i386/hw-func.h> |
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| 25 | #include <ll/i386/cons.h> |
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| 26 | |||
| 27 | FILE(reboot); |
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| 28 | |||
| 29 | void halt(void) |
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| 30 | { |
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| 31 | cputs("Halt called"); |
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| 32 | __asm__("hlt"); |
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| 33 | } |
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| 34 | /* |
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| 35 | * This code has been taken by the Linux Kernel and it has been |
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| 36 | * freely modified and simplified to do a reboot! |
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| 37 | */ |
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| 38 | |||
| 39 | void cold_reboot(void) |
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| 40 | { |
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| 41 | reboot(0); |
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| 42 | } |
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| 43 | |||
| 44 | void warm_reboot(void) |
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| 45 | { |
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| 46 | reboot(0x1234); |
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| 47 | } |
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| 48 | |||
| 49 | /* |
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| 50 | * This routine reboots the machine by asking the keyboard |
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| 51 | * controller to pulse the reset-line low. If mode = 0x1234 you |
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| 52 | * tell to BIOS to do a warm boot, else cold boot is performed! |
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| 53 | */ |
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| 54 | void reboot(int mode) |
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| 55 | { |
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| 56 | register int i,j; |
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| 57 | |||
| 58 | lmempokew((LIN_ADDR)0x472,mode); |
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| 59 | for (;;) { |
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| 60 | /* Wait for keyboard controller ready */ |
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| 61 | for (i=0; i<0x10000; i++) |
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| 62 | if ((inp(0x64) & 0x02) == 0) break; |
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| 63 | /* Do nothing for a while... */ |
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| 64 | for(j = 0; j < 100000 ; j++); |
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| 65 | /* pulse reset low */ |
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| 66 | outp(0xfe,0x64); |
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| 67 | /* Do nothing for a while... */ |
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| 68 | for(j = 0; j < 100000 ; j++); |
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| 69 | } |
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| 70 | } |