[U-Boot-Users] [PATCH] cfi-flash: Add CFG_FLASH_AUTOPROTECT_LIST

[Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>]

On 16:29 Fri 18 Apr     , Matthias Fuchs wrote:
> This patch adds a configurable flash auto protection list that can be used
> to make U-Boot protect flash regions in flash_init().
> 
> The idea has been discussed on the u-boot mailing list starting
> on Nov 18th, 2007.
> 
> Even this patch brings a new feature it is used as a bugfix for 4xx
> platforms where flash_init() does not completely protect the
> monitor's flash range in all situations.
> 
> U-Boot protects the flash range from CFG_MONITOR_BASE to
> (CFG_MONITOR_BASE + monitor_flash_len  - 1) by default. This does not
> include the reset vector at 0xfffffffc.
> 
> Example:
> #define CFG_FLASH_AUTOPROTECT_LIST {{0xfff80000, 0x80000}}
> 
> This config option will auto protect the last 512k of flash that
> contains the bootloader on board like APC405 and PMC405.
> 
> Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
> ---
>  drivers/mtd/cfi_flash.c |   17 +++++++++++++++++
>  1 files changed, 17 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
> index e3cfb8a..68ab55f 100644
> --- a/drivers/mtd/cfi_flash.c
> +++ b/drivers/mtd/cfi_flash.c
> @@ -1873,6 +1873,12 @@ unsigned long flash_init (void)
>  {
>  	unsigned long size = 0;
>  	int i;
> +#if defined(CFG_FLASH_AUTOPROTECT_LIST)
> +	struct apl_s {
> +		ulong start;
> +		ulong size;
> +	} apl[] = CFG_FLASH_AUTOPROTECT_LIST;
> +#endif
I think it will be better to create a weak structure.

Best Regards,
J.