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Diffstat (limited to '')
-rw-r--r-- | arch/arm/mach-rpc/ecard-loader.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-rpc/ecard-loader.S b/arch/arm/mach-rpc/ecard-loader.S new file mode 100644 index 000000000..eb8ac0412 --- /dev/null +++ b/arch/arm/mach-rpc/ecard-loader.S @@ -0,0 +1,40 @@ +/* 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} + |