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ramips: force word write on flashes with AMD cmdset (#9252)

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SVN-Revision: 27385
This commit is contained in:
Gabor Juhos 2011-07-03 15:01:51 +00:00
parent f1cf43d468
commit dbe55f08f0
1 changed files with 70 additions and 0 deletions
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70
target/linux/ramips/patches-2.6.37/011-mtd-cfi_cmdset_0002-force-word-write.patch Normal file
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@ -0,0 +1,70 @@
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -39,7 +39,7 @@
#include <linux/mtd/xip.h>
#define AMD_BOOTLOC_BUG
-#define FORCE_WORD_WRITE 0
+#define FORCE_WORD_WRITE 1
#define MAX_WORD_RETRIES 3
@@ -50,7 +50,9 @@
static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
+#if !FORCE_WORD_WRITE
static int cfi_amdstd_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
+#endif
static int cfi_amdstd_erase_chip(struct mtd_info *, struct erase_info *);
static int cfi_amdstd_erase_varsize(struct mtd_info *, struct erase_info *);
static void cfi_amdstd_sync (struct mtd_info *);
@@ -186,6 +188,7 @@ static void fixup_amd_bootblock(struct m
}
#endif
+#if !FORCE_WORD_WRITE
static void fixup_use_write_buffers(struct mtd_info *mtd, void *param)
{
struct map_info *map = mtd->priv;
@@ -195,6 +198,7 @@ static void fixup_use_write_buffers(stru
mtd->write = cfi_amdstd_write_buffers;
}
}
+#endif /* !FORCE_WORD_WRITE */
/* Atmel chips don't use the same PRI format as AMD chips */
static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
@@ -472,7 +476,7 @@ struct mtd_info *cfi_cmdset_0002(struct
/*
* Valid primary extension versions are: 1.0, 1.1, 1.2, 1.3, 1.4
- * see: Spec 1.3 http://cs.ozerki.net/zap/pub/axim-x5/docs/cfi_r20.pdf, page 19
+ * see: Spec 1.3 http://cs.ozerki.net/zap/pub/axim-x5/docs/cfi_r20.pdf, page 19
* http://www.spansion.com/Support/AppNotes/cfi_100_20011201.pdf
* Spec 1.4 http://www.spansion.com/Support/AppNotes/CFI_Spec_AN_03.pdf, page 9
*/
@@ -1386,6 +1390,7 @@ static int cfi_amdstd_write_words(struct
/*
* FIXME: interleaved mode not tested, and probably not supported!
*/
+#if !FORCE_WORD_WRITE
static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
unsigned long adr, const u_char *buf,
int len)
@@ -1496,7 +1501,6 @@ static int __xipram do_write_buffer(stru
return ret;
}
-
static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
@@ -1575,6 +1579,7 @@ static int cfi_amdstd_write_buffers(stru
return 0;
}
+#endif /* !FORCE_WORD_WRITE */
/*