Re: [U-Boot] CFI Flash write speed
Dear "A. Geisreiter",
please always keep the mailing list on Cc:. Thanks.
In message 004e01ca1bd8$a943a8f0$fbcafad0$@de you wrote:
I use U-Boot version 1.3.4 and there I can't find the define CONFIG_SYS_FLASH_USE_BUFFER_WRITE. Do I need a patch or a newer version of U-Boot?
Well, using recent code is always recommended :-)
In your old version, the variable names was probably still CFG_FLASH_USE_BUFFER_WRITE
Best regards,
Wolfgang Denk
Hello Mr. Denk,
CFG_FLASH_USE_BUFFER_WRITE is already defined in the project-header file. I have configured the CPU registers for access the flash memory with maximum speed. But I think it is although very slow. If I use Windows CE to copy something to the flash memory I have transfer rates of 140kB/s. With U-Boot I have only 75kB/s. What else can I do to increase the transfer rate?
Thanks, Andreas
Dear "A. Geisreiter",
In message 006201ca1c0c$55a62ea0$00f28be0$@de you wrote:
CFG_FLASH_USE_BUFFER_WRITE is already defined in the project-header file. I have configured the CPU registers for access the flash memory with maximum speed. But I think it is although very slow. If I use Windows CE to copy something to the flash memory I have transfer rates of 140kB/s. With U-Boot I have only 75kB/s. What else can I do to increase the transfer rate?
I guess the PXA270 suffers like all (?) ARM from the fact that data cache is not effective. Jean-Christophe has been promising for some time to submit patches that are supposed to fix this.
I have no idea though when these might hit mainline.
Best regards,
Wolfgang Denk
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A. Geisreiter -
Wolfgang Denk