u-boot-lfc.patch

该源码是2410下的nandboot的源码

+	
 	int i;
 	unsigned int reg = 0;
 
@@ -82,8 +84,12 @@
  */
 int serial_init (void)
 {
-	serial_setbrg ();
+	
+	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();//hema
 
+	serial_setbrg ();
+//	gpio->GPFDAT = (gpio->GPFDAT & ~(0xf<<4))|((~(0x4) & 0xf)<<4);
+	
 	return (0);
 }
 
diff -ruN u-boot-20060523/cpu/arm920t/start.S u-boot/cpu/arm920t/start.S
--- u-boot-20060523/cpu/arm920t/start.S	2006-09-25 17:04:03.000000000 +0800
+++ u-boot/cpu/arm920t/start.S	2006-10-22 17:51:13.000000000 +0800
@@ -140,10 +140,10 @@
 	ldr	r0, =INTMSK
 	str	r1, [r0]
 # if defined(CONFIG_S3C2410)
-	ldr	r1, =0x3ff
+	ldr	r1, =0x7ff
 	ldr	r0, =INTSUBMSK
 	str	r1, [r0]
-# endif
+# endif /*CONFIG_S3C2410*/
 
 	/* FCLK:HCLK:PCLK = 1:2:4 */
 	/* default FCLK is 120 MHz ! */
@@ -220,6 +220,20 @@
 	/* END stuff after relocation */
 #endif
 
+#ifdef CONFIG_S3C2410_NAND_BOOT
+	bl    copy_myself
+	    
+	@ jump to ram
+	ldr   r1, =on_the_ram
+	add  pc, r1, #0
+	nop
+	nop
+1:  b     1b          @ infinite loop
+				    
+on_the_ram:
+#endif
+				  
+	
 	ldr	pc, _start_armboot
 
 _start_armboot:	.word start_armboot
@@ -236,6 +250,111 @@
  *************************************************************************
  */
 
+#ifdef CONFIG_S3C2410_NAND_BOOT
+copy_myself:
+	mov r10, lr
+@ reset NAND
+	mov r1, #NAND_CTL_BASE
+	ldr   r2, =0xf830           @ initial value
+	str   r2, [r1, #oNFCONF]
+	ldr   r2, [r1, #oNFCONF]
+	bic  r2, r2, #0x800         @ enable chip
+	str   r2, [r1, #oNFCONF]
+	mov r2, #0xff               @ RESET command
+	strb r2, [r1, #oNFCMD]
+	mov r3, #0                  @ wait
+
+1:	add  r3, r3, #0x1
+	cmp r3, #0xa
+	blt   1b
+2:	ldr   r2, [r1, #oNFSTAT]    @ wait ready
+	tst    r2, #0x1
+	beq  2b
+	ldr   r2, [r1, #oNFCONF]
+	orr  r2, r2, #0x800         @ disable chip
+	str   r2, [r1, #oNFCONF]
+
+        @ get read to call C functions (for nand_read())
+	ldr   sp, DW_STACK_START    @ setup stack pointer
+	mov fp, #0                  @ no previous frame, so fp=0
+
+        @ copy vivi to RAM
+	ldr   r0, =UBOOT_RAM_BASE
+        mov   r1, #0x0  @address   
+	mov   r2, #0x30000  @size
+        bl    nand_read_ll
+
+	tst   r0, #0x0
+        beq   ok_nand_read
+
+#ifdef CONFIG_DEBUG_LL
+bad_nand_read:
+        ldr   r0, STR_FAIL
+	ldr   r1, SerBase
+        bl    PrintWord
+1:	b     1b          @ infinite loop
+#endif
+
+ok_nand_read:
+#ifdef CONFIG_DEBUG_LL
+	ldr   r0, STR_OK
+	ldr   r1, SerBase
+	bl    PrintWord
+#endif
+
+@ verify
+        mov r0, #0
+	ldr   r1, =UBOOT_RAM_BASE
+        mov r2, #0x400     @ 4 bytes * 1024 = 4K-bytes
+go_next:
+	ldr   r3, [r0], #4
+        ldr   r4, [r1], #4
+	teq   r3, r4
+        bne  notmatch
+	subs r2, r2, #4
+        beq  done_nand_read
+	bne  go_next
+
+notmatch:
+#ifdef CONFIG_DEBUG_LL
+        sub  r0, r0, #4
+	ldr   r1, SerBase
+        bl    PrintHexWord
+	ldr   r0, STR_FAIL
+        ldr   r1, SerBase
+	bl    PrintWord
+#endif
+1:	b     1b
+
+done_nand_read:
+#ifdef CONFIG_DEBUG_LL
+        ldr   r0, STR_OK
+	ldr   r1, SerBase
+        bl    PrintWord
+#endif
+	mov pc, r10
+
+
+@ clear memory
+@ r0: start address
+@ r1: length
+        mem_clear:
+	mov r2, #0
+        mov r3, r2
+	mov r4, r2
+	mov r5, r2
+	mov r6, r2
+        mov r7, r2
+	mov r8, r2
+        mov r9, r2
+clear_loop:
+	stmia      r0!, {r2-r9}
+	subs r1, r1, #(8 * 4)
+	bne  clear_loop
+	mov pc, lr
+
+#endif  @ CONFIG_S3C2410_NAND_BOOT
+		
 
 #ifndef CONFIG_SKIP_LOWLEVEL_INIT
 cpu_init_crit:
@@ -278,6 +397,7 @@
 @
 @ IRQ stack frame.
 @
+
 #define S_FRAME_SIZE	72
 
 #define S_OLD_R0	68
@@ -300,8 +420,8 @@
 #define S_R1		4
 #define S_R0		0
 
-#define MODE_SVC 0x13
-#define I_BIT	 0x80
+#define MODE_SVC        0x13
+#define I_BIT	        0x80
 
 /*
  * use bad_save_user_regs for abort/prefetch/undef/swi ...
@@ -432,3 +552,8 @@
 	bl 	do_fiq
 
 #endif
+#ifdef CONFIG_S3C2410_NAND_BOOT
+	.align     2
+	DW_STACK_START:
+	.word      STACK_BASE+STACK_SIZE-4
+#endif		
diff -ruN u-boot-20060523/drivers/nand/cvs/Entries u-boot/drivers/nand/cvs/Entries
--- u-boot-20060523/drivers/nand/cvs/Entries	2006-09-25 17:04:05.000000000 +0800
+++ u-boot/drivers/nand/cvs/Entries	1970-01-01 08:00:00.000000000 +0800
@@ -1,8 +0,0 @@
-/Makefile/1.1/Mon Mar  6 11:02:37 2006/-ko/D2006.05.22.16.00.00
-/diskonchip.c/1.2/Wed Apr 12 10:30:57 2006/-ko/D2006.05.22.16.00.00
-/nand.c/1.2/Wed Apr 12 10:30:57 2006/-ko/D2006.05.22.16.00.00
-/nand_base.c/1.4/Wed Apr 12 10:30:57 2006/-ko/D2006.05.22.16.00.00
-/nand_bbt.c/1.2/Wed Apr 12 10:30:58 2006/-ko/D2006.05.22.16.00.00
-/nand_ecc.c/1.2/Wed Apr 12 10:30:58 2006/-ko/D2006.05.22.16.00.00
-/nand_ids.c/1.2/Wed Apr 12 10:30:58 2006/-ko/D2006.05.22.16.00.00
-D
diff -ruN u-boot-20060523/drivers/nand/cvs/Repository u-boot/drivers/nand/cvs/Repository
--- u-boot-20060523/drivers/nand/cvs/Repository	2006-09-25 17:04:05.000000000 +0800
+++ u-boot/drivers/nand/cvs/Repository	1970-01-01 08:00:00.000000000 +0800
@@ -1 +0,0 @@
-u-boot/drivers/nand
diff -ruN u-boot-20060523/drivers/nand/cvs/Root u-boot/drivers/nand/cvs/Root
--- u-boot-20060523/drivers/nand/cvs/Root	2006-09-25 17:04:05.000000000 +0800
+++ u-boot/drivers/nand/cvs/Root	1970-01-01 08:00:00.000000000 +0800
@@ -1 +0,0 @@
-:pserver:[e-mail]:/cvsroot/u-boot
diff -ruN u-boot-20060523/drivers/nand/cvs/Tag u-boot/drivers/nand/cvs/Tag
--- u-boot-20060523/drivers/nand/cvs/Tag	2006-09-25 17:04:05.000000000 +0800
+++ u-boot/drivers/nand/cvs/Tag	1970-01-01 08:00:00.000000000 +0800
@@ -1 +0,0 @@
-D2006.05.22.16.00.00
diff -ruN u-boot-20060523/drivers/nand/diskonchip.c u-boot/drivers/nand/diskonchip.c
--- u-boot-20060523/drivers/nand/diskonchip.c	2006-09-25 17:04:05.000000000 +0800
+++ u-boot/drivers/nand/diskonchip.c	1970-01-01 08:00:00.000000000 +0800
@@ -1,1787 +0,0 @@
-/*
- * drivers/mtd/nand/diskonchip.c
- *
- * (C) 2003 Red Hat, Inc.
- * (C) 2004 Dan Brown <[e-mail]>
- * (C) 2004 Kalev Lember <[e-mail]>
- *
- * Author: David Woodhouse <[e-mail]>
- * Additional Diskonchip 2000 and Millennium support by Dan Brown <[e-mail]>
- * Diskonchip Millennium Plus support by Kalev Lember <[e-mail]>
- *
- * Error correction code lifted from the old docecc code
- * Author: Fabrice Bellard ([e-mail])
- * Copyright (C) 2000 Netgem S.A.
- * converted to the generic Reed-Solomon library by Thomas Gleixner <[e-mail]>
- *
- * Interface to generic NAND code for M-Systems DiskOnChip devices
- *
- * $Id: diskonchip.c,v 1.45 2005/01/05 18:05:14 dwmw2 Exp $
- */
-
-#include <common.h>
-
-#if !defined(CFG_NAND_LEGACY)
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/rslib.h>
-#include <linux/moduleparam.h>
-#include <asm/io.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/doc2000.h>
-#include <linux/mtd/compatmac.h>
-#include <linux/mtd/partitions.h>
-#include <linux/mtd/inftl.h>
-
-/* Where to look for the devices? */
-#ifndef CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS
-#define CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS 0
-#endif
-
-static unsigned long __initdata doc_locations[] = {
-#if defined (__alpha__) || defined(__i386__) || defined(__x86_64__)
-#ifdef CONFIG_MTD_DISKONCHIP_PROBE_HIGH
-	0xfffc8000, 0xfffca000, 0xfffcc000, 0xfffce000,
-	0xfffd0000, 0xfffd2000, 0xfffd4000, 0xfffd6000,
-	0xfffd8000, 0xfffda000, 0xfffdc000, 0xfffde000,
-	0xfffe0000, 0xfffe2000, 0xfffe4000, 0xfffe6000,
-	0xfffe8000, 0xfffea000, 0xfffec000, 0xfffee000,
-#else /*  CONFIG_MTD_DOCPROBE_HIGH */
-	0xc8000, 0xca000, 0xcc000, 0xce000,
-	0xd0000, 0xd2000, 0xd4000, 0xd6000,
-	0xd8000, 0xda000, 0xdc000, 0xde000,
-	0xe0000, 0xe2000, 0xe4000, 0xe6000,
-	0xe8000, 0xea000, 0xec000, 0xee000,
-#endif /*  CONFIG_MTD_DOCPROBE_HIGH */
-#elif defined(__PPC__)
-	0xe4000000,
-#elif defined(CONFIG_MOMENCO_OCELOT)
-	0x2f000000,
-	0xff000000,
-#elif defined(CONFIG_MOMENCO_OCELOT_G) || defined (CONFIG_MOMENCO_OCELOT_C)
-	0xff000000,
-##else
-#warning Unknown architecture for DiskOnChip. No default probe locations defined
-#endif
-	0xffffffff };
-
-static struct mtd_info *doclist = NULL;
-
-struct doc_priv {
-	void __iomem *virtadr;
-	unsigned long physadr;
-	u_char ChipID;
-	u_char CDSNControl;
-	int chips_per_floor; /* The number of chips detected on each floor */
-	int curfloor;
-	int curchip;
-	int mh0_page;
-	int mh1_page;
-	struct mtd_info *nextdoc;
-};
-
-/* Max number of eraseblocks to scan (from start of device) for the (I)NFTL
-   MediaHeader.  The spec says to just keep going, I think, but that's just
-   silly. */
-#define MAX_MEDIAHEADER_SCAN 8
-
-/* This is the syndrome computed by the HW ecc generator upon reading an empty
-   page, one with all 0xff for data and stored ecc code. */
-static u_char empty_read_syndrome[6] = { 0x26, 0xff, 0x6d, 0x47, 0x73, 0x7a };
-/* This is the ecc value computed by the HW ecc generator upon writing an empty
-   page, one with all 0xff for data. */
-static u_char empty_write_ecc[6] = { 0x4b, 0x00, 0xe2, 0x0e, 0x93, 0xf7 };
-
-#define INFTL_BBT_RESERVED_BLOCKS 4
-
-#define DoC_is_MillenniumPlus(doc) ((doc)->ChipID == DOC_ChipID_DocMilPlus16 || (doc)->ChipID == DOC_ChipID_DocMilPlus32)
-#define DoC_is_Millennium(doc) ((doc)->ChipID == DOC_ChipID_DocMil)
-#define DoC_is_2000(doc) ((doc)->ChipID == DOC_ChipID_Doc2k)
-
-static void doc200x_hwcontrol(struct mtd_info *mtd, int cmd);
-static void doc200x_select_chip(struct mtd_info *mtd, int chip);
-
-static int debug=0;
-module_param(debug, int, 0);
-
-static int try_dword=1;
-module_param(try_dword, int, 0);
-
-static int no_ecc_failures=0;
-module_param(no_ecc_failures, int, 0);
-
-#ifdef CONFIG_MTD_PARTITIONS
-static int no_autopart=0;
-module_param(no_autopart, int, 0);
-#endif
-
-#ifdef MTD_NAND_DISKONCHIP_BBTWRITE
-static int inftl_bbt_write=1;
-#else
-static int inftl_bbt_write=0;
-#endif
-module_param(inftl_bbt_write, int, 0);
-
-static unsigned long doc_config_location = CONFIG_MTD_DISKONCHIP_PROBE_ADDRESS;
-module_param(doc_config_location, ulong, 0);
-MODULE_PARM_DESC(doc_config_location, "Physical memory address at which to probe for DiskOnChip");
-
-
-/* Sector size for HW ECC */
-#define SECTOR_SIZE 512
-/* The sector bytes are packed into NB_DATA 10 bit words */
-#define NB_DATA (((SECTOR_SIZE + 1) * 8 + 6) / 10)
-/* Number of roots */
-#define NROOTS 4
-/* First consective root */
-#define FCR 510
-/* Number of symbols */
-#define NN 1023
-
-/* the Reed Solomon control structure */
-static struct rs_control *rs_decoder;
-
-/*
- * The HW decoder in the DoC ASIC's provides us a error syndrome,
- * which we must convert to a standard syndrom usable by the generic
- * Reed-Solomon library code.
- *
- * Fabrice Bellard figured this out in the old docecc code. I added
- * some comments, improved a minor bit and converted it to make use
- * of the generic Reed-Solomon libary. tglx
- */
-static int doc_ecc_decode (struct rs_control *rs, uint8_t *data, uint8_t *ecc)
-{
-	int i, j, nerr, errpos[8];
-	uint8_t parity;
-	uint16_t ds[4], s[5], tmp, errval[8], syn[4];
-
-	/* Convert the ecc bytes into words */
-	ds[0] = ((ecc[4] & 0xff) >> 0) | ((ecc[5] & 0x03) << 8);
-	ds[1] = ((ecc[5] & 0xfc) >> 2) | ((ecc[2] & 0x0f) << 6);
-	ds[2] = ((ecc[2] & 0xf0) >> 4) | ((ecc[3] & 0x3f) << 4);
-	ds[3] = ((ecc[3] & 0xc0) >> 6) | ((ecc[0] & 0xff) << 2);
-	parity = ecc[1];
-
-	/* Initialize the syndrom buffer */
-	for (i = 0; i < NROOTS; i++)
-		s[i] = ds[0];
-	/*
-	 *  Evaluate
-	 *  s[i] = ds[3]x^3 + ds[2]x^2 + ds[1]x^1 + ds[0]
-	 *  where x = alpha^(FCR + i)
-	 */
-	for(j = 1; j < NROOTS; j++) {
-		if(ds[j] == 0)
-			continue;
-		tmp = rs->index_of[ds[j]];
-		for(i = 0; i < NROOTS; i++)
-			s[i] ^= rs->alpha_to[rs_modnn(rs, tmp + (FCR + i) * j)];
-	}
-
-	/* Calc s[i] = s[i] / alpha^(v + i) */
-	for (i = 0; i < NROOTS; i++) {
-		if (syn[i])
- 			syn[i] = rs_modnn(rs, rs->index_of[s[i]] + (NN - FCR - i));
-	}
-	/* Call the decoder library */
-	nerr = decode_rs16(rs, NULL, NULL, 1019, syn, 0, errpos, 0, errval);
-
-	/* Incorrectable errors ? */
-	if (nerr < 0)
-		return nerr;
-
-	/*
-	 * Correct the errors. The bitpositions are a bit of magic,
-	 * but they are given by the design of the de/encoder circuit
-	 * in the DoC ASIC's.
-	 */
-	for(i = 0;i < nerr; i++) {
-		int index, bitpos, pos = 1015 - errpos[i];
-		uint8_t val;
-		if (pos >= NB_DATA && pos < 1019)
-			continue;
-		if (pos < NB_DATA) {
-			/* extract bit position (MSB first) */
-			pos = 10 * (NB_DATA - 1 - pos) - 6;
-			/* now correct the following 10 bits. At most two bytes
-			   can be modified since pos is even */
-			index = (pos >> 3) ^ 1;
-			bitpos = pos & 7;
-			if ((index >= 0 && index < SECTOR_SIZE) ||
-			    index == (SECTOR_SIZE + 1)) {
-				val = (uint8_t) (errval[i] >> (2 + bitpos));
-				parity ^= val;
-				if (index < SECTOR_SIZE)
-					data[index] ^= val;
-			}
-			index = ((pos >> 3) + 1) ^ 1;
-			bitpos = (bitpos + 10) & 7;
-			if (bitpos == 0)
-				bitpos = 8;
-			if ((index >= 0 && index < SECTOR_SIZE) ||
-			    index == (SECTOR_SIZE + 1)) {
-				val = (uint8_t)(errval[i] << (8 - bitpos));
-				parity ^= val;
-				if (index < SECTOR_SIZE)
-					data[index] ^= val;
-			}
-		}
-	}