From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 arch/h8300/lib/romfs.S | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 arch/h8300/lib/romfs.S

(limited to 'arch/h8300/lib/romfs.S')

diff --git a/arch/h8300/lib/romfs.S b/arch/h8300/lib/romfs.S
new file mode 100644
index 00000000..68910d8e
--- /dev/null
+++ b/arch/h8300/lib/romfs.S
@@ -0,0 +1,57 @@
+/* romfs move to __ebss */
+
+#include <asm/linkage.h>
+
+#if defined(__H8300H__) 
+	.h8300h
+#endif
+#if defined(__H8300S__) 
+	.h8300s
+#endif
+
+#define BLKOFFSET 512
+
+	.text
+.globl	__move_romfs
+_romfs_sig_len = 8
+
+__move_romfs:	
+	mov.l	#__sbss,er0
+	mov.l	#_romfs_sig,er1
+	mov.b	#_romfs_sig_len,r3l
+1:					/* check romfs image */
+	mov.b	@er0+,r2l
+	mov.b	@er1+,r2h
+	cmp.b	r2l,r2h
+	bne	2f
+	dec.b	r3l
+	bne	1b
+
+	/* find romfs image */
+	mov.l	@__sbss+8,er0		/* romfs length(be) */
+	mov.l	#__sbss,er1
+	add.l	er0,er1			/* romfs image end */
+	mov.l	#__ebss,er2
+	add.l	er0,er2			/* distination address */
+#if defined(CONFIG_INTELFLASH)
+	add.l	#BLKOFFSET,er2
+#endif
+	adds	#2,er0
+	adds	#1,er0
+	shlr	er0
+	shlr	er0			/* transfer length */
+1:
+	mov.l	@er1,er3		/* copy image */
+	mov.l	er3,@er2
+	subs	#4,er1
+	subs	#4,er2
+	dec.l	#1,er0
+	bpl	1b
+2:
+	rts
+
+	.section	.rodata
+_romfs_sig:	
+	.ascii	"-rom1fs-"
+
+	.end
-- 
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