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kernel/linux-imx6_3.14.28/arch/arm/lib/ecard.S 1023 Bytes
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  /*
   *  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.
   *
   * 27/03/03 Ian Molton Clean up CONFIG_CPU
   *
   */
  #include <linux/linkage.h>
  #include <asm/assembler.h>
  
  #define CPSR2SPSR(rt) \
  		mrs	rt, cpsr; \
  		msr	spsr_cxsf, rt
  
  @ 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
  		ldmfd	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
  		ldmfd	sp!, {r4 - r12, pc}