2009-03-02 20:50:35 how could i save the changes on board
jacqueline liu (CHINA)
Message: 70235
Hi
i'm using the bf527-ezkit , and uclinux-dist-2008R1.5-RC3 for developing .
i've make the setting of MTD in menuconfig as below , and the kernel and filesystem are loaded to the parallel flash .
but whenever i reboot the kernel , the changes i made on board last time disappear.
how could have the changes saved ?
my MTD settings are :
Device Drivers --->
Memory Technology Devices (MTD) --->
<*> Memory Technology Device (MTD) support
[*] Direct char device access to MTD devices
[*] Caching block device access to MTD devices
[*] MTD partitioning support
[*] Command line partition table parsing
RAM/ROM/Flash chip drivers --->
<*> Detect flash chips by Common Flash Interface (CFI) probe
<*> Support for Intel/Sharp flash chips
<*> Support for AMD/Fujitsu flash chips
<*> Support for RAM chips in bus mapping
<*> Support for ROM chips in bus mapping
Mapping drivers for chip access --->
<*> CFI Flash device in physical memory map
(the address/length options are ignored)
< > Generic uClinux RAM/ROM filesystem support (disable this option)
[*] Support non-linear mappings of flash chips
Self-contained MTD device drivers --->
<*> Support most SPI Flash chips (AT26DF, M25P, W25X, ...)
NAND Device Support --->
<*> NAND Flash device for BF537 STAMP board
<*> Blackfin on-chip NAND Flash Controller driver
[*] BF5XX NAND Hardware ECC
<*> Support for generic platform NAND driver
other settings are as default of the board.
TranslateQuoteReplyEditDelete
2009-03-02 20:56:23 Re: how could i save the changes on board
Mike Frysinger (UNITED STATES)
Message: 70236
enabling device drivers doesnt make the system automatically start using them. the system does what you tell it to, so if you dont tell it to actually use the flash, then it wont.
please read the documentation:
docs.blackfin.uclinux.org/doku.php?id=linux-kernel:mtd
QuoteReplyEditDelete
2009-03-02 21:36:56 Re: how could i save the changes on board
jacqueline liu (CHINA)
Message: 70237
i've read that file
but i still wonder how to start using the drivers
can that be change in the menuconfig?
i've not found that .
TranslateQuoteReplyEditDelete
2009-03-03 00:39:09 Re: how could i save the changes on board
Mike Frysinger (UNITED STATES)
Message: 70240
dont just skim it. the first paragraph talks about using filesystems in flash.