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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/mach-rpc/ecard-loader.S | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/mach-rpc/ecard-loader.S')
| -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} + |