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authorDaniel Ribeiro <drwyrm@gmail.com>2009-05-17 11:02:08 (GMT)
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-06-05 16:55:10 (GMT)
commite1b158abc532f5a9d355c187583038c4f75ab11d (patch)
tree044577ee0b160950c7e8d61eb25a66593b96daf6 /drivers
parentec2d0d842577854eee18f0dc06bd48fe17189b54 (diff)
downloadlinux-e1b158abc532f5a9d355c187583038c4f75ab11d.tar.xz
mtd: CFI 1.0 and CFI 1.1
This patch allows otpinfo for CFI >= 1.0 and burst read for CFI >= 1.1. references: 1.0: http://www.datasheetcatalog.org/datasheets2/81/816884_1.pdf 1.1: http://milkymist.org/doc/MT28F640J3.pdf http://www.delorie.com/agenda/specs/29066709.pdf Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com> Acked-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0001.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index e772803..8664fee 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -329,6 +329,7 @@ read_pri_intelext(struct map_info *map, __u16 adr)
{
struct cfi_private *cfi = map->fldrv_priv;
struct cfi_pri_intelext *extp;
+ unsigned int extra_size = 0;
unsigned int extp_size = sizeof(*extp);
again:
@@ -352,19 +353,24 @@ read_pri_intelext(struct map_info *map, __u16 adr)
extp->BlkStatusRegMask = le16_to_cpu(extp->BlkStatusRegMask);
extp->ProtRegAddr = le16_to_cpu(extp->ProtRegAddr);
- if (extp->MajorVersion == '1' && extp->MinorVersion >= '3') {
- unsigned int extra_size = 0;
- int nb_parts, i;
+ if (extp->MinorVersion >= '0') {
+ extra_size = 0;
/* Protection Register info */
extra_size += (extp->NumProtectionFields - 1) *
sizeof(struct cfi_intelext_otpinfo);
+ }
+ if (extp->MinorVersion >= '1') {
/* Burst Read info */
extra_size += 2;
if (extp_size < sizeof(*extp) + extra_size)
goto need_more;
- extra_size += extp->extra[extra_size-1];
+ extra_size += extp->extra[extra_size - 1];
+ }
+
+ if (extp->MinorVersion >= '3') {
+ int nb_parts, i;
/* Number of hardware-partitions */
extra_size += 1;