| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * linux/arch/arm/lib/ecard.S |
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| 4 | * |
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| 5 | * Copyright (C) 1995, 1996 Russell King |
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| 6 | * |
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| 7 | * 27/03/03 Ian Molton Clean up CONFIG_CPU |
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| 8 | */ |
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| 9 | #include <linux/linkage.h> |
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| 10 | #include <asm/assembler.h> |
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| 11 | |
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| 12 | #define CPSR2SPSR(rt) \ |
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| 13 | mrs rt, cpsr; \ |
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| 14 | msr spsr_cxsf, rt |
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| 15 | |
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| 16 | @ Purpose: call an expansion card loader to read bytes. |
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| 17 | @ Proto : char read_loader(int offset, char *card_base, char *loader); |
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| 18 | @ Returns: byte read |
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| 19 | |
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| 20 | ENTRY(ecard_loader_read) |
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| 21 | stmfd sp!, {r4 - r12, lr} |
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| 22 | mov r11, r1 |
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| 23 | mov r1, r0 |
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| 24 | CPSR2SPSR(r0) |
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| 25 | mov lr, pc |
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| 26 | mov pc, r2 |
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| 27 | ldmfd sp!, {r4 - r12, pc} |
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| 28 | |
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| 29 | @ Purpose: call an expansion card loader to reset the card |
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| 30 | @ Proto : void read_loader(int card_base, char *loader); |
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| 31 | @ Returns: byte read |
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| 32 | |
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| 33 | ENTRY(ecard_loader_reset) |
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| 34 | stmfd sp!, {r4 - r12, lr} |
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| 35 | mov r11, r0 |
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| 36 | CPSR2SPSR(r0) |
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| 37 | mov lr, pc |
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| 38 | add pc, r1, #8 |
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| 39 | ldmfd sp!, {r4 - r12, pc} |
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| 40 | |
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| 41 | |
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