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authorGabor Juhos <juhosg@openwrt.org>2013-04-07 11:37:15 +0000
committerGabor Juhos <juhosg@openwrt.org>2013-04-07 11:37:15 +0000
commit85675528da0cd5c29b14a77d8ea83150131b4520 (patch)
tree86a6da02a8538063a217f1ec6fe088c71c66c77b /target/linux/ramips
parentfde143b66f2e627280d966e0fe3a08ec5ba78d96 (diff)
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ramips: add cfi_cmdset_0002 patches
The parallel flash access on the RT-N56U is broken without those patches. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 36242
Diffstat (limited to 'target/linux/ramips')
-rw-r--r--target/linux/ramips/patches-3.8/0210-mtd_fix_cfi_cmdset_0002_erase_status_check.patch20
-rw-r--r--target/linux/ramips/patches-3.8/0211-mtd-cfi_cmdset_0002-force-word-write.patch61
2 files changed, 81 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.8/0210-mtd_fix_cfi_cmdset_0002_erase_status_check.patch b/target/linux/ramips/patches-3.8/0210-mtd_fix_cfi_cmdset_0002_erase_status_check.patch
new file mode 100644
index 0000000..bf076fe
--- /dev/null
+++ b/target/linux/ramips/patches-3.8/0210-mtd_fix_cfi_cmdset_0002_erase_status_check.patch
@@ -0,0 +1,20 @@
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -1927,7 +1927,7 @@ static int __xipram do_erase_chip(struct
+ chip->erase_suspended = 0;
+ }
+
+- if (chip_ready(map, adr))
++ if (chip_good(map, adr, map_word_ff(map)))
+ break;
+
+ if (time_after(jiffies, timeo)) {
+@@ -2016,7 +2016,7 @@ static int __xipram do_erase_oneblock(st
+ chip->erase_suspended = 0;
+ }
+
+- if (chip_ready(map, adr)) {
++ if (chip_good(map, adr, map_word_ff(map))) {
+ xip_enable(map, chip, adr);
+ break;
+ }
diff --git a/target/linux/ramips/patches-3.8/0211-mtd-cfi_cmdset_0002-force-word-write.patch b/target/linux/ramips/patches-3.8/0211-mtd-cfi_cmdset_0002-force-word-write.patch
new file mode 100644
index 0000000..5f9df14
--- /dev/null
+++ b/target/linux/ramips/patches-3.8/0211-mtd-cfi_cmdset_0002-force-word-write.patch
@@ -0,0 +1,61 @@
+--- 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)
+ {
+ 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)
+@@ -1443,6 +1447,7 @@ 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)
+@@ -1555,7 +1560,6 @@ 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)
+ {
+@@ -1630,6 +1634,7 @@ static int cfi_amdstd_write_buffers(stru
+
+ return 0;
+ }
++#endif /* !FORCE_WORD_WRITE */
+
+ /*
+ * Wait for the flash chip to become ready to write data