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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/arch/arm/lib/ecard.S
3 *
4 * Copyright (C) 1995, 1996 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * 27/03/03 Ian Molton Clean up CONFIG_CPU
11 *
12 */
13#include <linux/linkage.h>
14#include <asm/assembler.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
16#define CPSR2SPSR(rt) \
17 mrs rt, cpsr; \
18 msr spsr_cxsf, rt
19
20@ Purpose: call an expansion card loader to read bytes.
21@ Proto : char read_loader(int offset, char *card_base, char *loader);
22@ Returns: byte read
23
24ENTRY(ecard_loader_read)
25 stmfd sp!, {r4 - r12, lr}
26 mov r11, r1
27 mov r1, r0
28 CPSR2SPSR(r0)
29 mov lr, pc
30 mov pc, r2
Russell King1b93a712006-06-25 11:23:45 +010031 ldmfd sp!, {r4 - r12, pc}
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
33@ Purpose: call an expansion card loader to reset the card
34@ Proto : void read_loader(int card_base, char *loader);
35@ Returns: byte read
36
37ENTRY(ecard_loader_reset)
38 stmfd sp!, {r4 - r12, lr}
39 mov r11, r0
40 CPSR2SPSR(r0)
41 mov lr, pc
42 add pc, r1, #8
Russell King1b93a712006-06-25 11:23:45 +010043 ldmfd sp!, {r4 - r12, pc}
Linus Torvalds1da177e2005-04-16 15:20:36 -070044