On Friday, August 19, 2011 17:25:10 Simon Glass wrote: > On Fri, Aug 19, 2011 at 3:15 PM, Mike Frysinger wrote: > > On Friday, August 19, 2011 15:28:48 Simon Glass wrote: > >> This adds a new SPI flash command which only rewrites blocks if the > >> contents need to change. This can speed up SPI flash programming when > >> much of the data is unchanged from what is already there. > > > > looks good to me. i'll give it a spin on a board of mine and then push > > into my sf branch. i really should write a spi flash simulation so i > > could just test this from gdb ... > > Funny you should say that. I rather badly need a way of testing the > higher level U-Boot code (from the commands down to where it calls > architecture/driver code). I am drafting up an email to send to the > list with some thoughts on the matter.
when i wrote the blackfin system level port of the gnu sim, it was so i could
do this (and i thought it'd be bad-ass). i often use the gnu sim to do
initial testing (sometimes down to the driver level) before i get around to
loading up on actual hardware.
$ bfin-elf-run --env operating --model bf537 ./u-boot
U-Boot 2011.06-00375-g23ffb39-dirty (Aug 14 2011 - 16:54:03)
CPU: ADSP bf537-0.2 (Detected Rev: 0.0) (bypass boot)
Board: ADI BF537 stamp board
Support: http://blackfin.uclinux.org/
Clock: VCO: 500 MHz, Core: 500 MHz, System: 125 MHz
RAM: 64 MiB
Flash: ## Unknown flash on Bank 1 - Size = 0x00000000 = 0 MB
0 Bytes
MMC:
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
KGDB: [on serial] ready
Warning: Generating 'random' MAC address
Net: bfin_mac
Hit any key to stop autoboot: 5 0
bfin> help sf
sf - SPI flash sub-system
Usage:
sf probe [bus:]cs [hz] [mode] - init flash device on given SPI bus
and chip select
sf read addr offset len - read `len' bytes starting at
`offset' to memory at `addr'
sf write addr offset len - write `len' bytes from memory
at `addr' to flash at `offset'
sf erase offset [+]len - erase `len' bytes from `offset'
`+len' round up `len' to block size
bfin>
-mike
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