Hi Prakash Please quote properly and don't top post. Your emails are very hard to understand.
prakash bedge wrote: > Hi Albert and Stefan, > > I have used the proper commands. > i.e. > mw.b 0xfc000000 0xf0 > mw.b 0xfc000055 0x98 > md.b 0xfc000010 > But still no positive results. > Last time I forgot to tell here, that I have commneted the for(;;) loop > in "hang" function after flash_init result testing in lib_ppc/board.c > and then I am able to run the above commands on uboot prompt. > > 1) You're writing 32-bit words to the chip. At most it should be 16-bit > words, possibly even 8-bits. Try mw.w and mw.b. > Prakash - I tried both but no success. > How to crosscheck the chipwidth? Can someone tell what is chipwidth and > portwidth? > I believe I am using chipwidth - 16 and portwidth - 8. How to validate > this against chipwidth and portwidth? Number one thing you *MUST* do is read the flash data sheets, especially the command interface. Repeat until you understand. Then try the QRY command sequence by hand in all the various possibilities (see thread links below). * In your hardware, the "55" and "AA" addresses may be shifted by one or two bits: <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31735> * In your hardware, the command byte lane may be one byte wide, two bytes wide, or four bytes wide. This changes the 55/AA addresses and which byte lane(s) are used for the command. * Do you have 1, 2, or 4 chips on your board? * Is your memory bus 1, 2, or 4 bytes wide? The thread links below will help explain. Note that Robert is using the BDI, and thus using the BDI memory read/write commands. You want to use u-boot's memory read/write commands instead. Pay special attention to these posts: <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31588> <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31723> <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31724> <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31730> <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31735> <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31787> <http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/31501/focus=31738> Good luck, gvb [snip] _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
