On Fri, Jul 30, 2010 at 11:49:55AM +0200, Eric Bénard wrote:
> newer Numonyx Strataflash P3x have 1024b buffer, thus, it's possible
> to write a buffer size of 0x200 which the actual flash_write_cmd
> doesn't permit as it's limited to a uchar parameter.
So I guess these chips have 16 data lines?
Unfortunately this won't work when two of these are parallel. You'd have
to duplicate the command for the upper 16 bit.
Sascha
>
> Signed-off-by: Eric Bénard <eric@xxxxxxxxxx>
> ---
> drivers/nor/cfi_flash.c | 11 +++++++++++
> drivers/nor/cfi_flash.h | 1 +
> drivers/nor/cfi_flash_intel.c | 5 ++++-
> 3 files changed, 16 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/nor/cfi_flash.c b/drivers/nor/cfi_flash.c
> index fa5e5ee..6f45da6 100644
> --- a/drivers/nor/cfi_flash.c
> +++ b/drivers/nor/cfi_flash.c
> @@ -886,6 +886,17 @@ void flash_write_cmd (struct flash_info *info, flash_sect_t sect, uint offset, u
> flash_write_word(info, cword, addr);
> }
>
> +void flash_write_cmd16 (struct flash_info *info, flash_sect_t sect, uint offset, ushort cmd)
> +{
> +
> + uchar *addr;
> + cfiword_t cword;
> +
> + addr = flash_make_addr (info, sect, offset);
> + cword.w = cmd;
> + flash_write_word(info, cword, addr);
> +}
> +
> int flash_isequal (struct flash_info *info, flash_sect_t sect, uint offset, uchar cmd)
> {
> cfiptr_t cptr;
> diff --git a/drivers/nor/cfi_flash.h b/drivers/nor/cfi_flash.h
> index 057e56c..d7e6ea2 100644
> --- a/drivers/nor/cfi_flash.h
> +++ b/drivers/nor/cfi_flash.h
> @@ -189,6 +189,7 @@ extern struct cfi_cmd_set cfi_cmd_set_amd;
>
> int flash_isset (struct flash_info *info, flash_sect_t sect, uint offset, uchar cmd);
> void flash_write_cmd (struct flash_info *info, flash_sect_t sect, uint offset, uchar cmd);
> +void flash_write_cmd16 (struct flash_info * info, flash_sect_t sect, uint offset, ushort cmd);
> flash_sect_t find_sector (struct flash_info *info, ulong addr);
> int flash_status_check (struct flash_info *info, flash_sect_t sector,
> uint64_t tout, char *prompt);
> diff --git a/drivers/nor/cfi_flash_intel.c b/drivers/nor/cfi_flash_intel.c
> index 4344760..96bf33f 100644
> --- a/drivers/nor/cfi_flash_intel.c
> +++ b/drivers/nor/cfi_flash_intel.c
> @@ -71,7 +71,10 @@ static int intel_flash_write_cfibuffer (struct flash_info *info, ulong dest, con
> /* reduce the number of loops by the width of the port */
> cnt = len >> (info->portwidth - 1);
>
> - flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
> + if (cnt >= 0x100)
> + flash_write_cmd16 (info, sector, 0, (ushort) cnt - 1);
> + else
> + flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
> while (cnt-- > 0) {
> if (bankwidth_is_1(info)) {
> *dst.cp++ = *src.cp++;
> --
> 1.6.3.3
>
>
--
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