diff options
Diffstat (limited to 'sys/arch/landisk/stand/boot/srt0.S')
| -rw-r--r-- | sys/arch/landisk/stand/boot/srt0.S | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/sys/arch/landisk/stand/boot/srt0.S b/sys/arch/landisk/stand/boot/srt0.S new file mode 100644 index 00000000000..3e46a2a2e33 --- /dev/null +++ b/sys/arch/landisk/stand/boot/srt0.S @@ -0,0 +1,153 @@ +/* $OpenBSD: srt0.S,v 1.1 2006/10/06 21:48:50 mickey Exp $ */ +/* $NetBSD: boot.S,v 1.1 2006/09/01 21:26:18 uwe Exp $ */ + +/*- + * Copyright (c) 2005 NONAKA Kimihiro + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <machine/asm.h> + +ENTRY(start) + bra boot_start1 + nop + .balign 4 +ENTRY(boot_magic) + .long 0x20041110 +ENTRY(boot_params) + .long boot_start1 - boot_params + + . = start + 0x80 +boot_start1: + mov r4, r0 + add #-4, r0 + mov.l @(0, r0), r0 + mov.l .L.boot_magic1, r1 + cmp/eq r0, r1 + bf 2f + mov r4, r0 + mov.l .L.boot_params_size, r3 + mov.l @r0, r2 + mov.l .L.boot_params, r1 + cmp/hi r3, r2 + bf 1f + mov r3, r2 +1: mov.b @r0+, r3 + mov.b r3, @r1 + dt r2 + bf/s 1b + add #1, r1 +2: + mov.l .L._end, r0 /* zero bss */ + mov.l .L.__bss_start, r1 + sub r1, r0 + shlr2 r0 /* _end and __bss_start are aligned */ + mov #0, r2 +1: mov.l r2, @r1 + dt r0 + bf/s 1b + add #4, r1 + + mov.l .L.boot, r0 + jsr @r0 + mov r5, r4 + +boot_fail: + mov r0, r1 + mova .L.errtxt, r0 + mov r0, r4 + mov #32, r0 + trapa #0x3f + mov r1, r4 + mov #32, r0 + trapa #0x3f + mova .L.crlf, r0 + mov r0, r4 + mov #32, r0 + trapa #0x3f +99: bra 99b + nop + + +ENTRY(halt) + mova .L.pwrctl, r0 + mov #1, r1 + mov.b @r1, r0 + rts + nop + +ENTRY(reboot) +ENTRY(_rtt) + mov #1, r4 /* reboot */ + mov #11, r0 + trapa #0x3f + mov.l .L.start, r0 + jmp @r0 + nop + +/* + * int raise(int sig); + */ +ENTRY(raise) + rts + nop + +/* + * + */ +ENTRY(cnset) + rts + nop + +/* + * int readsects(int dev, uint32_t lba, void *buf, size_t size); + */ +ENTRY(readsects) + mov #2, r0 + trapa #0x3f + rts + nop + + .align 2 +.L.boot_magic1: + .long 0x20031125 +.L.boot_params: + .long boot_params +.L.boot_params_size: + .long boot_start1 - boot_params +.L._end: + .long _end +.L.__bss_start: + .long __bss_start +.L.boot: + .long _C_LABEL(boot) +.L.start: + .long 0xc0000000 +.L.pwrctl: + .long 0xb0000003 + + .align 2 +.L.errtxt: .asciz ">>BOOT FAILED: " + .align 2 +.L.crlf: .asciz "\r\n" |