From 7a8e9bed17d7924a9c5c4699b1f6a3a0359524ed Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sat, 31 May 2003 18:35:21 +0000
Subject: * Patch by Marc Singer, 29 May 2003:   Fixed rarp boot method for
 IA32 and other little-endian CPUs.
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* Patch by Marc Singer, 28 May 2003:
  Added port I/O commands.

* Patch by Matthew McClintock, 28 May 2003
  - cpu/mpc824x/start.S: fix relocation code when booting from RAM
  - minor patches for utx8245

* Patch by Daniel Engström, 28 May 2003:
  x86 update

* Patch by Dave Ellis, 9 May 2003 + 27 May 2003:
  add nand flash support to SXNI855T configuration
  fix/extend nand flash support:
  - fix 'nand erase' command so does not erase bad blocks
  - fix 'nand write' command so does not write to bad blocks
  - fix nand_probe() so handles no flash detected properly
  - add doc/README.nand
  - add .jffs2 and .oob options to nand read/write
  - add 'nand bad' command to list bad blocks
  - add 'clean' option to 'nand erase' to write JFFS2 clean markers
  - make NAND read/write faster

* Patch by Rune Torgersen, 23 May 2003:
  Update for MPC8266ADS board
---
 board/sc520_spunk/sc520_spunk_asm.S | 82 +++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 board/sc520_spunk/sc520_spunk_asm.S

(limited to 'board/sc520_spunk/sc520_spunk_asm.S')

diff --git a/board/sc520_spunk/sc520_spunk_asm.S b/board/sc520_spunk/sc520_spunk_asm.S
new file mode 100644
index 000000000..e198125b8
--- /dev/null
+++ b/board/sc520_spunk/sc520_spunk_asm.S
@@ -0,0 +1,82 @@
+/*
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB <daniel@omicron.se>.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* now setup the General purpose bus to give us access to the LEDs.
+ * We can then use the leds to display status information.
+ */ 
+
+sc520_cdp_registers:
+/* size    offset        value */
+.word 1 ; .word 0x040 ; .long 0x00       /* SDRAM buffer control */
+.word 2 ; .word 0xc08 ; .long 0x0001     /* GP CS offset */
+.word 2 ; .word 0xc09 ; .long 0x0003     /* GP CS width */
+.word 2 ; .word 0xc0a ; .long 0x0001     /* GP CS width */
+.word 2 ; .word 0xc0b ; .long 0x0003     /* GP RD pulse width */
+.word 2 ; .word 0xc0c ; .long 0x0001     /* GP RD offse */
+.word 2 ; .word 0xc0d ; .long 0x0003     /* GP WR pulse width */
+.word 2 ; .word 0xc0e ; .long 0x0001     /* GP WR offset */
+.word 2 ; .word 0xc2c ; .long 0x003f     /* GPIO directionreg 31-16 */
+.word 2 ; .word 0xc2a ; .long 0xe000     /* GPIO directionreg 15-0 */
+.word 2 ; .word 0xc22 ; .long 0xffc0     /* GPIO pin function 31-16 reg */
+.word 2 ; .word 0xc20 ; .long 0x1fff     /* GPIO pin function 15-0 reg */
+.word 0 ; .word 0x000 ; .long 0x00
+
+/* board early intialization */
+.globl early_board_init
+early_board_init:
+        movl    $sc520_cdp_registers,%esi
+init_loop:	
+        movl    $0xfffef000,%edi     /* MMCR base to edi */					
+	movw	(%esi), %bx          /* load size to bx */
+	cmpw	$0, %bx              /* if size is 0 we're done */
+	je	done 
+	xorl	%edx,%edx
+	movw	2(%esi), %dx        /* load MMCR offset to dx */
+	addl	%edx, %edi          /* add offset to base in edi */
+	movl	4(%esi), %eax       /* load value in eax */
+	cmpw	$1, %bx
+	je	byte                 /* byte op? */
+	cmpw	$2, %bx
+	je	word                 /* word op? */
+	movl	%eax, (%edi)         /* must be long, then */
+	jmp	next
+byte:   movb    %al,(%edi)        
+	jmp	next
+word:	movw	%ax,(%edi)
+next:	addl	$8, %esi             /* advance esi */
+	jmp	init_loop
+
+	/* light all leds */
+done:   movl    $0xfffefc32,%edx 
+	movw    $0000,(%edx)              
+
+	jmp 	*%ebp		     /* return to caller */
+
+
+.globl __show_boot_progress
+__show_boot_progress:
+	movl    $0xfffefc32,%edx 
+	xorw    $0xffff, %ax 
+	movw    %ax,(%edx)              
+	jmp	*%ebp
+
-- 
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