Hello, I am using MPC8260ADS based customs board. I have configured the memory map in U-Boot as follows
SDRAM : 0x00000000 (size=128 MB) FLASH : 0x30000000 (size= 1MB) SRAM : 0xFFF00000 (size 4MB) There are also other components in the board, like FRAMER , DSP, etc. I have not initialized the memory map of those components in U-Boot. I am able to get the U-Boot prompt when run by TRACE23. I have build a default MPC8260ADS kernel, the only changes I have made is in the variable IMAP_ADDR , BCSR_ADDR in arch/ppc/platforms/ads8260.h. I have put those values from the already running U-Boot code. Our TEXT_BASE=0xFFF00000 HRCW value= "0E A2 82 05" I copied uImage to location 0x04000000 and the Load Address=0x00000000 and Entry point=0x00000000. The bootm 0x04000000 gives the o/p "Transferring Control to Linux" and then nothing comes. Where is the wrong? My question is 1. What are the minimum information Linux needs from U-Boot to come up properly? In the Linux source tree we have put some printk statement and found that base address of SDRAM, size, etc are passed correctly to Linux by U-Boot. 2. Is the info passed from U-Boot is sufficient enough to make the kernel up? 3. If not, where should I concentrate in Linux tree? Pls help. Thanks, Batsayan Das Tata Consultancy Services Limited Mailto: batsayan.das at tcs.com Website: http://www.tcs.com Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you -------------- next part -------------- An HTML attachment was scrubbed... URL: http://ozlabs.org/pipermail/linuxppc-embedded/attachments/20051216/3e88c97f/attachment.htm
