diff options
| author |   Andrea Adami <andrea.adami@gmail.com> | 2014-05-30 00:56:08 +0200 |
|---|---|---|
| committer |   Paul Eggleton <paul.eggleton@linux.intel.com> | 2014-06-03 21:57:02 +0100 |
| commit | 5d8b11f28917774cf72b2f0a0df8bdd94734ef85 (patch) | |
| tree | 2c6f0d3237cec6d50686823e6fcd19a431dfa10a | |
| parent | dac17673f683805bbb8bea643725c48a1afecf7c (diff) | |
| download | meta-handheld-5d8b11f28917774cf72b2f0a0df8bdd94734ef85.tar.gz | |
linux-yocto_3.14: collie: remove detection hack
The collie used for development has unfortunately an hw flaw
and the CFI table is missing on one NOR chip.
Further testings on other models are giving normal readings.
Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
| -rw-r--r-- | recipes-kernel/linux/linux-yocto-3.14/collie/collie-match-cfi-qry.patch | 47 | ||||
| -rw-r--r-- | recipes-kernel/linux/linux-yocto_3.14.bbappend | 1 |
2 files changed, 0 insertions, 48 deletions
diff --git a/recipes-kernel/linux/linux-yocto-3.14/collie/collie-match-cfi-qry.patch b/recipes-kernel/linux/linux-yocto-3.14/collie/collie-match-cfi-qry.patch deleted file mode 100644 index a315d93..0000000 --- a/recipes-kernel/linux/linux-yocto-3.14/collie/collie-match-cfi-qry.patch +++ /dev/null @@ -1,47 +0,0 @@ -From 66ec11df6561d5ba7cdf41977af828a53ba6b99f Mon Sep 17 00:00:00 2001 -From: Andrea Adami <andrea.adami@gmail.com> -Date: Sat, 1 Feb 2014 13:17:24 +0100 -Subject: [PATCH] mtd: cfi_util.c: force CFI detection of 2x LH28F640BF - -Signed-off-by: Andrea Adami <andrea.adami@gmail.com> ---- - drivers/mtd/chips/cfi_util.c | 16 ++++++++++++++++ - 1 file changed, 16 insertions(+) - -diff --git a/drivers/mtd/chips/cfi_util.c b/drivers/mtd/chips/cfi_util.c -index f992418..2c7a13d 100644 ---- a/drivers/mtd/chips/cfi_util.c -+++ b/drivers/mtd/chips/cfi_util.c -@@ -29,6 +29,7 @@ int __xipram cfi_qry_present(struct map_info *map, __u32 base, - int osf = cfi->interleave * cfi->device_type; /* scale factor */ - map_word val[3]; - map_word qry[3]; -+ unsigned long mask = (1 << (cfi->device_type * 8)) - 1; - - qry[0] = cfi_build_cmd('Q', map, cfi); - qry[1] = cfi_build_cmd('R', map, cfi); -@@ -38,6 +39,21 @@ int __xipram cfi_qry_present(struct map_info *map, __u32 base, - val[1] = map_read(map, base + osf*0x11); - val[2] = map_read(map, base + osf*0x12); - -+ /* Apparently only one of the 2 interleaved LH28F640BF 16 bit chips on -+ * a 32 bit wide bus is answering to the CFI Query. -+ * Using the expected map bankwidth=4 and chip interleave=2 we get wrong -+ * readings like 0xffff0051 instead of 0x00510051 etc. -+ * We take the valid bytes and recreate the expected answer as workaround. -+ */ -+ if (((val[0].x[0] >> (cfi->device_type * 8)) == mask) && -+ ((val[1].x[0] >> (cfi->device_type * 8)) == mask) && -+ ((val[2].x[0] >> (cfi->device_type * 8)) == mask)) -+ { -+ val[0].x[0] = (val[0].x[0] & mask) + ((val[0].x[0] & mask) << (cfi->device_type * 8)); -+ val[1].x[0] = (val[1].x[0] & mask) + ((val[1].x[0] & mask) << (cfi->device_type * 8)); -+ val[2].x[0] = (val[2].x[0] & mask) + ((val[2].x[0] & mask) << (cfi->device_type * 8)); -+ } -+ - if (!map_word_equal(map, qry[0], val[0])) - return 0; - --- -1.8.1.5 - diff --git a/recipes-kernel/linux/linux-yocto_3.14.bbappend b/recipes-kernel/linux/linux-yocto_3.14.bbappend index 9591f1a..79fff8d 100644 --- a/recipes-kernel/linux/linux-yocto_3.14.bbappend +++ b/recipes-kernel/linux/linux-yocto_3.14.bbappend @@ -55,7 +55,6 @@ SRC_URI_append_collie = " \ \ file://collie-cfi-probe-again.patch \ file://collie-mtd-resize.patch \ - file://collie-match-cfi-qry.patch \ file://collie-LH28F640BF.patch \ file://collie-add-bootblock.patch \ \ |