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