LXR linux/arch/arm/lib/ecard.S

   1/*
   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>
  15#include <mach/hardware.h>
  16
  17#define CPSR2SPSR(rt) \
  18                mrs     rt, cpsr; \
  19                msr     spsr_cxsf, rt
  20
  21@ Purpose: call an expansion card loader to read bytes.
  22@ Proto  : char read_loader(int offset, char *card_base, char *loader);
  23@ Returns: byte read
  24
  25ENTRY(ecard_loader_read)
  26                stmfd   sp!, {r4 - r12, lr}
  27                mov     r11, r1
  28                mov     r1, r0
  29                CPSR2SPSR(r0)
  30                mov     lr, pc
  31                mov     pc, r2
  32                ldmfd   sp!, {r4 - r12, pc}
  33
  34@ Purpose: call an expansion card loader to reset the card
  35@ Proto  : void read_loader(int card_base, char *loader);
  36@ Returns: byte read
  37
  38ENTRY(ecard_loader_reset)
  39                stmfd   sp!, {r4 - r12, lr}
  40                mov     r11, r0
  41                CPSR2SPSR(r0)
  42                mov     lr, pc
  43                add     pc, r1, #8
  44                ldmfd   sp!, {r4 - r12, pc}
  45
  46