1 | /* SPDX-License-Identifier: GPL-2.0 |
2 | * |
3 | * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com> |
4 | */ |
5 | |
6 | #include <linux/linkage.h> |
7 | #include <cpu/mmu_context.h> |
8 | |
9 | /* |
10 | * Kernel mode register usage: |
11 | * k0 scratch |
12 | * k1 scratch |
13 | * For more details, please have a look at entry.S |
14 | */ |
15 | |
16 | #define k0 r0 |
17 | #define k1 r1 |
18 | |
19 | ENTRY(wakeup_start) |
20 | ! clear STBY bit |
21 | mov #-126, k1 |
22 | and #127, k0 |
23 | mov.b k0, @k1 |
24 | ! enable refresh |
25 | mov.l 5f, k1 |
26 | mov.w 6f, k0 |
27 | mov.w k0, @k1 |
28 | ! jump to handler |
29 | mov.l 4f, k1 |
30 | jmp @k1 |
31 | nop |
32 | |
33 | .align 2 |
34 | 4: .long handle_interrupt |
35 | 5: .long 0xffffff68 |
36 | 6: .word 0x0524 |
37 | |
38 | ENTRY(wakeup_end) |
39 | nop |
40 | |