ecard.S
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- /*
- * linux/arch/arm/lib/ecard.S
- *
- * Copyright (C) 1995, 1996 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #include <linux/config.h> /* for CONFIG_CPU_nn */
- #include <linux/linkage.h>
- #include <asm/assembler.h>
- #include <asm/hardware.h>
- #ifdef CONFIG_CPU_26
- #define CPSR2SPSR(rt)
- #else
- #define CPSR2SPSR(rt)
- mrs rt, cpsr;
- msr spsr, rt
- #endif
- @ Purpose: call an expansion card loader to read bytes.
- @ Proto : char read_loader(int offset, char *card_base, char *loader);
- @ Returns: byte read
- ENTRY(ecard_loader_read)
- stmfd sp!, {r4 - r12, lr}
- mov r11, r1
- mov r1, r0
- CPSR2SPSR(r0)
- mov lr, pc
- mov pc, r2
- LOADREGS(fd, sp!, {r4 - r12, pc})
- @ Purpose: call an expansion card loader to reset the card
- @ Proto : void read_loader(int card_base, char *loader);
- @ Returns: byte read
- ENTRY(ecard_loader_reset)
- stmfd sp!, {r4 - r12, lr}
- mov r11, r0
- CPSR2SPSR(r0)
- mov lr, pc
- add pc, r1, #8
- LOADREGS(fd, sp!, {r4 - r12, pc})