[Yaffs-archive] Fwd: [YAFFS]Re: NAND changes
Charles Manning
manningc2@actrix.gen.nz
Fri, 21 Feb 2003 09:23:43 +1300
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Hi Yaffsers
Thanx Thomas. Before I check these in I'd like a second set of eyes over these.
Could someone try out these patches and get back to me?
Thanx
-- CHarles
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Date: Tue, 18 Feb 2003 23:28:02 +0100
From: Thomas Gleixner <tglx@linutronix.de>
Subject: Re: NAND changes
In-reply-to: <200302181822.03529.tglx@linutronix.de>
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On Tuesday 18 February 2003 18:22, Thomas Gleixner wrote:
> Sorry for making noise. I was slightly brain damaged and confused of a lot
> of discussions. I'm going to change it again. Will make more noise, if
> finished.
Making noise again. Attached a patch against current CVS code.
Sorry for any disturbance or inconvenience.
--
Thomas
________________________________________________________________________
linutronix - competence in embedded & realtime linux
http://www.linutronix.de
mail: tglx@linutronix.de
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Index: yaffs/yaffs_mtdif.c
===================================================================
RCS file: /home/aleph1/cvs/yaffs/yaffs_mtdif.c,v
retrieving revision 1.7
diff -u -r1.7 yaffs_mtdif.c
--- yaffs/yaffs_mtdif.c 17 Jan 2003 04:19:08 -0000 1.7
+++ yaffs/yaffs_mtdif.c 18 Feb 2003 21:15:26 -0000
@@ -29,6 +29,16 @@
#include "linux/mtd/nand.h"
#endif
+struct nand_oobinfo yaffs_oobinfo = {
+ useecc: 1,
+ eccpos: {8, 9, 10, 13, 14, 15}
+};
+
+struct nand_oobinfo yaffs_noeccinfo = {
+ useecc: 0,
+};
+
+
int nandmtd_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, yaffs_Spare *spare)
{
struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
@@ -43,9 +53,9 @@
if(data && spare)
{
if(dev->useNANDECC)
- mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,NAND_YAFFS_OOB);
+ mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_oobinfo);
else
- mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,NAND_NONE_OOB);
+ mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo);
}
else
{
@@ -80,12 +90,12 @@
if(dev->useNANDECC)
{
u8 tmpSpare[ YAFFS_BYTES_PER_SPARE + (2*sizeof(int)) ];
- retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,tmpSpare,NAND_YAFFS_OOB);
+ retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,tmpSpare,yaffs_oobinfo);
memcpy(spareAsBytes, tmpSpare, YAFFS_BYTES_PER_SPARE);
}
else
{
- retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,NAND_NONE_OOB);
+ retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo);
}
}
else
Index: yaffs/utils/mkyaffs.c
===================================================================
RCS file: /home/aleph1/cvs/yaffs/utils/mkyaffs.c,v
retrieving revision 1.5
diff -u -r1.5 mkyaffs.c
--- yaffs/utils/mkyaffs.c 13 Dec 2002 00:13:06 -0000 1.5
+++ yaffs/utils/mkyaffs.c 18 Feb 2003 21:15:26 -0000
@@ -66,6 +66,19 @@
unsigned char oobbuf[16];
unsigned char imgpage[528];
+/*
+ * OOB layout
+ */
+
+struct nand_oobinfo yaffs_oobinfo = {
+ useecc: 1,
+ eccpos: {8, 9, 10, 13, 14, 15}
+};
+
+struct nand_oobinfo yaffs_noeccinfo = {
+ useecc: 0,
+};
+
/*
* Main program
@@ -76,19 +89,26 @@
unsigned long offset;
int fd;
int img=-1;
+ int optcnt = 1;
+ int usemtdecc = 0;
int imglen = 0;
struct mtd_oob_buf oob = {0, 16, (unsigned char *) &oobbuf};
mtd_info_t meminfo;
erase_info_t erase;
+ struct nand_oobinfo oobsel;
+ if (strcmp (argv[optcnt], "-e") == 0) {
+ optcnt++;
+ usemtdecc = 1;
+ }
+
/* Make sure a device was specified */
- if(argc < 2) {
- printf("usage: %s <mtdname> [image name]\n", argv[0]);
+ if(argc < (optcnt + 2)) {
+ printf("usage: %s -e <mtdname> <image name>\n", argv[0]);
exit(1);
}
-
- if(argc > 2 &&
- (img = open(argv[2],O_RDONLY)) == -1) {
+
+ if((img = open(argv[optcnt + 1],O_RDONLY)) == -1) {
perror("opening image file");
exit(1);
}
@@ -104,7 +124,7 @@
lseek(img,0,SEEK_SET);
/* Open the device */
- if((fd = open(argv[1], O_RDWR)) == -1) {
+ if((fd = open(argv[optcnt], O_RDWR)) == -1) {
perror("opening flash");
exit(1);
}
@@ -116,6 +136,14 @@
exit(1);
}
+ // set the appropriate oob layout selector
+ oobsel = usemtdecc ? &yaffs_oobinfo : &yaffs_noeccinfo;
+ if (ioctl (fd, MEMSETOOBSEL, &oobsel) != 0) {
+ perror ("MEMSETOOBSEL");
+ close (fd);
+ exit (1);
+ }
+
/* Make sure device page sizes are valid */
if( !(meminfo.oobsize == 16 && meminfo.oobblock == 512))
{
@@ -171,12 +199,21 @@
for(offset = 0; offset <meminfo.erasesize; offset+=512)
{
if(read(img,imgpage,528) == 528){
- lseek(fd,addr+offset,SEEK_SET);
- write(fd,imgpage,512);
+ if (usemtdecc) {
+ imgpage[512+8] = 0xff;
+ imgpage[512+9] = 0xff;
+ imgpage[512+10] = 0xff;
+ imgpage[512+13] = 0xff;
+ imgpage[512+14] = 0xff;
+ imgpage[512+15] = 0xff;
+ }
oob.start = addr+offset;
oob.length=16;
oob.ptr=&imgpage[512];
ioctl(fd,MEMWRITEOOB,&oob);
+
+ lseek(fd,addr+offset,SEEK_SET);
+ write(fd,imgpage,512);
}
}
}
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