projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| eda6f6ec RJ |
1 | /* Bootloader to resume MIO A701 |
| 2 | * | |
| 3 | * 2007-1-12 Robert Jarzmik | |
| 4 | * | |
| 5 | * This code is licenced under the GPLv2. | |
| 6 | */ | |
| 7 | ||
| 8 | #include <linux/linkage.h> | |
| 9 | #include <asm/assembler.h> | |
| 10 | ||
| 11 | /* | |
| 12 | * Note: Yes, part of the following code is located into the .data section. | |
| 13 | * This is to allow jumpaddr to be accessed with a relative load | |
| 14 | * while we can't rely on any MMU translation. We could have put | |
| 15 | * sleep_save_sp in the .text section as well, but some setups might | |
| 16 | * insist on it to be truly read-only. | |
| 17 | */ | |
| 18 | .data | |
| 19 | ENTRY(mioa701_bootstrap) | |
| 20 | 0: | |
| 21 | b 1f | |
| 22 | ENTRY(mioa701_jumpaddr) | |
| 23 | .word 0x40f00008 @ PSPR in no-MMU mode | |
| 24 | 1: | |
| 25 | mov r0, #0xa0000000 @ Don't suppose memory access works | |
| 26 | orr r0, r0, #0x00200000 @ even if it's supposed to | |
| 999f6338 | 27 | orr r0, r0, #0x0000b000 |
| eda6f6ec RJ |
28 | mov r1, #0 |
| 29 | str r1, [r0] @ Early disable resume for next boot | |
| 30 | ldr r0, mioa701_jumpaddr @ (Murphy's Law) | |
| 31 | ldr r0, [r0] | |
| 6ebbf2ce | 32 | ret r0 |
| eda6f6ec RJ |
33 | 2: |
| 34 | ||
| 35 | ENTRY(mioa701_bootstrap_lg) | |
| 36 | .data | |
| 37 | .word 2b-0b |