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path: root/drivers/mtd/chips/cfi_cmdset_0001.c
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Diffstat (limited to 'drivers/mtd/chips/cfi_cmdset_0001.c')
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0001.c26
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index c240454..8664fee 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -46,6 +46,7 @@
#define MANUFACTURER_INTEL 0x0089
#define I82802AB 0x00ad
#define I82802AC 0x00ac
+#define PF38F4476 0x881c
#define MANUFACTURER_ST 0x0020
#define M50LPW080 0x002F
#define M50FLW080A 0x0080
@@ -315,10 +316,20 @@ static struct cfi_fixup fixup_table[] = {
{ 0, 0, NULL, NULL }
};
+static void cfi_fixup_major_minor(struct cfi_private *cfi,
+ struct cfi_pri_intelext *extp)
+{
+ if (cfi->mfr == MANUFACTURER_INTEL &&
+ cfi->id == PF38F4476 && extp->MinorVersion == '3')
+ extp->MinorVersion = '1';
+}
+
static inline struct cfi_pri_intelext *
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:
@@ -326,6 +337,8 @@ read_pri_intelext(struct map_info *map, __u16 adr)
if (!extp)
return NULL;
+ cfi_fixup_major_minor(cfi, extp);
+
if (extp->MajorVersion != '1' ||
(extp->MinorVersion < '0' || extp->MinorVersion > '5')) {
printk(KERN_ERR " Unknown Intel/Sharp Extended Query "
@@ -340,19 +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;
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