41 lines
874 B
ArmAsm
41 lines
874 B
ArmAsm
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* linux/arch/arm/lib/ecard.S
|
||
|
|
*
|
||
|
|
* Copyright (C) 1995, 1996 Russell King
|
||
|
|
*
|
||
|
|
* 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}
|
||
|
|
|