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-rw-r--r--arch/arm/mach-rpc/ecard-loader.S40
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
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index 000000000000..eb8ac0412da6
--- /dev/null
+++ b/arch/arm/mach-rpc/ecard-loader.S
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+/* 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}
+