<br><font size=2 face="sans-serif">Hello,</font>
<br>
<br><font size=2 face="sans-serif">I am using MPC8260ADS based customs
board. I have configured the memory map in U-Boot as follows</font>
<br>
<br><font size=2 face="sans-serif">SDRAM : 0x00000000 (size=128 MB)</font>
<br><font size=2 face="sans-serif">FLASH :
0x30000000 (size= 1MB)</font>
<br><font size=2 face="sans-serif">SRAM : 0xFFF00000 (size 4MB)</font>
<br>
<br><font size=2 face="sans-serif">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. </font>
<br><font size=2 face="sans-serif">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. </font>
<br>
<br><font size=2 face="sans-serif">Our TEXT_BASE=0xFFF00000</font>
<br><font size=2 face="sans-serif">HRCW value= "0E A2 82 05"
</font>
<br>
<br><font size=2 face="sans-serif">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?</font>
<br><font size=2 face="sans-serif"><br>
My question is</font>
<br><font size=2 face="sans-serif">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. </font>
<br><font size=2 face="sans-serif">2. Is the info passed from U-Boot is
sufficient enough to make the kernel up?</font>
<br><font size=2 face="sans-serif">3. If not, where should I concentrate
in Linux tree?</font>
<br>
<br><font size=2 face="sans-serif">Pls help.</font>
<br>
<br><font size=2 face="sans-serif">Thanks,</font>
<br><font size=2 face="sans-serif">Batsayan Das<br>
Tata Consultancy Services Limited<br>
Mailto: batsayan.das@tcs.com<br>
Website: http://www.tcs.com</font>
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