From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001
From: Srikant Patnaik
Date: Sun, 11 Jan 2015 12:28:04 +0530
Subject: Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
---
 arch/m68k/platform/68328/head-rom.S | 105 ++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 arch/m68k/platform/68328/head-rom.S

(limited to 'arch/m68k/platform/68328/head-rom.S')

diff --git a/arch/m68k/platform/68328/head-rom.S b/arch/m68k/platform/68328/head-rom.S
new file mode 100644
index 00000000..a5ff96d0
--- /dev/null
+++ b/arch/m68k/platform/68328/head-rom.S
@@ -0,0 +1,105 @@
+	
+	.global _start
+	.global _stext
+
+	.global _rambase
+	.global _ramvec
+	.global _ramstart
+	.global _ramend
+
+#ifdef CONFIG_INIT_LCD
+	.global bootlogo_bits
+#endif
+
+	.data
+
+/*
+ *      Set up the usable of RAM stuff. Size of RAM is determined then
+ *      an initial stack set up at the end.
+ */
+.align 4
+_ramvec:
+.long   0
+_rambase:
+.long   0
+_ramstart:
+.long   0
+_ramend:
+.long   0
+
+#define	RAMEND	(CONFIG_RAMBASE + CONFIG_RAMSIZE)
+
+	.text
+_start:
+_stext:	movew	#0x2700,%sr
+#ifdef CONFIG_INIT_LCD
+	movel	#bootlogo_bits, 0xfffffA00 /* LSSA */
+	moveb	#0x28,   0xfffffA05	/* LVPW */
+	movew	#0x280,  0xFFFFFa08	/* LXMAX */
+	movew	#0x1df,  0xFFFFFa0a	/* LYMAX */
+	moveb	#0,      0xfffffa29	/* LBAR */
+	moveb	#0,      0xfffffa25	/* LPXCD */
+	moveb	#0x08,   0xFFFFFa20	/* LPICF */
+	moveb	#0x01,   0xFFFFFA21	/* -ve pol */
+	moveb	#0x81,   0xfffffA27	/* LCKCON */
+	movew	#0xff00, 0xfffff412	/* LCD pins */
+#endif
+	moveal  #RAMEND-CONFIG_MEMORY_RESERVE*0x100000 - 0x10, %sp
+	movew	#32767, %d0  /* PLL settle wait loop */
+1:	subq	#1, %d0
+	bne	1b
+
+	/* Copy data segment from ROM to RAM */
+	moveal	#_etext, %a0
+	moveal	#_sdata, %a1
+	moveal	#_edata, %a2
+
+	/* Copy %a0 to %a1 until %a1 == %a2 */
+1:	movel	%a0@+, %a1@+
+	cmpal	%a1, %a2
+	bhi	1b
+
+	moveal	#_sbss, %a0
+	moveal	#_ebss, %a1
+	/* Copy 0 to %a0 until %a0 == %a1 */
+	
+1:
+	clrl	%a0@+
+	cmpal	%a0, %a1
+	bhi	1b
+
+        movel   #_sdata, %d0    
+        movel   %d0, _rambase        
+        movel   #_ebss, %d0
+        movel   %d0, _ramstart
+	movel	#RAMEND-CONFIG_MEMORY_RESERVE*0x100000, %d0
+	movel	%d0, _ramend
+	movel	#CONFIG_VECTORBASE,	%d0
+	movel	%d0, _ramvec
+	
+/*
+ * load the current task pointer and stack
+ */
+	lea	init_thread_union, %a0
+	lea	0x2000(%a0), %sp
+
+1:	jsr	start_kernel
+        bra 1b
+_exit:
+
+	jmp	_exit
+
+
+putc:
+	moveb	%d7,0xfffff907
+1:
+	movew	0xfffff906, %d7
+	andw	#0x2000, %d7
+	beq	1b
+	rts
+
+	.data
+env:
+	.long	0
+	.text
+
-- 
cgit