Dear Stefan Roese, > > as Wolfgang Denx suggested me, i am trying to use the u-boot CFI driver > > with > > a CFI flash (SSTVF3201B). > > Yes. But please take a look at the CONFIG_FLASH_CFI_LEGACY config > option. This enables the legacy CFI flash devices. And IIRC the SST > flash chips are supported via this driver/extension. >
> > This flash chip allows erasing/writing blocks of 4 KBytes (called "sectors" > > in the SST datasheet), or 64 KBytes (called "blocks"). > > > > The command sequence table for this flash shows 2 different commands to > > Please see my comment above. And grep for CONFIG_FLASH_CFI_LEGACY to see > how its used in the config header. And if necessary, you can always > extend the CFI configuration in the JEDEC source: > > drivers/mtd/jedec_flash.c thaks for the hint, anyway seems i am unfortunate whit this flash chip: first of all, i would understand why a flash chip is defined/handled as leagacy. Can someone kindly clarify this ? SST39VF3201B is a 2M x 16, CFI compliant. CFI legacy dont seems anyway to support 0x50 command for erasing a sector, i grepped and found "only" a CMD_CLEAR_STATUS as 0x50 that don't seems to fit the case. But the code is not trivial, and i can miss something of course. Also, legacy flash_info_t don't have any field to define the erase sector command. But still, i am not sure this chip should be considered legacy. I grepped for *3201* SST chip, only baord that seems to use it is esd/common and this board has her own flash.c But still, has been suggested me to use CFI driver, so i need to know what the u-boot community would prefer as approach. Still a note. I found issues in Linux also for this chip (STT39VF3201B) and had to ask for a patch on the command set to allow the correct erase command to be used. So how should i proceed ? Many thanks. Best Regards Angelo Dureghello _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot