1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * linux/arch/arm/lib/ecard.S 4 * 5 * Copyright (C) 1995, 1996 Russell King 6 * 7 * 27/03/03 Ian Molton Clean up CONFIG_CPU 8 */ 9 #include <linux/linkage.h> 10 #include <asm/assembler.h> 11 12 #define CPSR2SPSR(rt) \ 13 mrs rt, cpsr; \ 14 msr spsr_cxsf, rt 15 16 @ Purpose: call an expansion card loader to read bytes. 17 @ Proto : char read_loader(int offset, char *card_base, char *loader); 18 @ Returns: byte read 19 20 ENTRY(ecard_loader_read) 21 stmfd sp!, {r4 - r12, lr} 22 mov r11, r1 23 mov r1, r0 24 CPSR2SPSR(r0) 25 mov lr, pc 26 mov pc, r2 27 ldmfd sp!, {r4 - r12, pc} 28 29 @ Purpose: call an expansion card loader to reset the card 30 @ Proto : void read_loader(int card_base, char *loader); 31 @ Returns: byte read 32 33 ENTRY(ecard_loader_reset) 34 stmfd sp!, {r4 - r12, lr} 35 mov r11, r0 36 CPSR2SPSR(r0) 37 mov lr, pc 38 add pc, r1, #8 39 ldmfd sp!, {r4 - r12, pc} 40 41