| Robert Jarzmik | eda6f6e | 2008-08-17 09:34:30 +0100 | [diff] [blame] | 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 |
| Robert Jarzmik | 999f633 | 2008-11-17 20:29:03 +0100 | [diff] [blame] | 27 | orr r0, r0, #0x0000b000 |
| Robert Jarzmik | eda6f6e | 2008-08-17 09:34:30 +0100 | [diff] [blame] | 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] |
| Russell King | 6ebbf2c | 2014-06-30 16:29:12 +0100 | [diff] [blame] | 32 | ret r0 |
| Robert Jarzmik | eda6f6e | 2008-08-17 09:34:30 +0100 | [diff] [blame] | 33 | 2: |
| 34 | |
| 35 | ENTRY(mioa701_bootstrap_lg) |
| 36 | .data |
| 37 | .word 2b-0b |