From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/arm/lib/ecard.S | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 arch/arm/lib/ecard.S

(limited to 'arch/arm/lib/ecard.S')

diff --git a/arch/arm/lib/ecard.S b/arch/arm/lib/ecard.S
new file mode 100644
index 000000000..e6057fa85
--- /dev/null
+++ b/arch/arm/lib/ecard.S
@@ -0,0 +1,44 @@
+/*
+ *  linux/arch/arm/lib/ecard.S
+ *
+ *  Copyright (C) 1995, 1996 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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}
+
-- 
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