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