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mtd: CFI 1.0 and CFI 1.1

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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>
This commit is contained in:
Daniel Ribeiro 2009-05-17 08:02:08 -03:00 committed by David Woodhouse
parent ec2d0d8425
commit e1b158abc5
1 changed files with 10 additions and 4 deletions
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14
drivers/mtd/chips/cfi_cmdset_0001.c
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@ -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;