Hi,
let me summarize: let's take my initial patch that I posted on Friday.
At least two people will be satisfied :-)
Matthias
On Monday 21 April 2008 01:45, Wolfgang Denk wrote:
> In message <[EMAIL PROTECTED]> you 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 <[EMAIL PROTECTED]>
> > ---
> > drivers/mtd/cfi_flash.c | 21 +++++++++++++++++++++
> > 1 files changed, 21 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
> > index e3cfb8a..fad9e8b 100644
> > --- a/drivers/mtd/cfi_flash.c
> > +++ b/drivers/mtd/cfi_flash.c
> > @@ -169,6 +169,17 @@ flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
> > /* FLASH chips info */
> > #define CFG_FLASH_CFI_WIDTH FLASH_CFI_8BIT
> > #endif
> >
> > +struct apl_s {
> > + ulong start;
> > + ulong size;
> > +};
> > +
> > +#if !defined(CFG_FLASH_AUTOPROTECT_LIST)
> > +struct apl_s apl[] = {};
> > +#else
> > +struct apl_s apl[] = CFG_FLASH_AUTOPROTECT_LIST;
> > +#endif
>
> No. Please don't add any code nor data when CFG_FLASH_AUTOPROTECT_LIST
> is undefined.
>
> > typedef unsigned long flash_sect_t;
> >
> > /* CFI standard query structure */
> > @@ -1966,6 +1977,16 @@ unsigned long flash_init (void)
> > CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
> > flash_get_info(CFG_ENV_ADDR_REDUND));
> > #endif
> > +
> > + for (i = 0; i < ARRAY_SIZE(apl); i++) {
> > + debug ("autoprotecting from %08x to %08x\n",
> > + apl[i].start, apl[i].start + apl[i].size - 1);
> > + flash_protect (FLAG_PROTECT_SET,
> > + apl[i].start,
> > + apl[i].start + apl[i].size - 1,
> > + flash_get_info (apl[i].start));
> > + }
> > +
>
> No. Please don't add any code nor data when CFG_FLASH_AUTOPROTECT_LIST
> is undefined.
>
> NAK.
>
> Best regards,
>
> Wolfgang Denk
>
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