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<P><FONT SIZE=2 FACE="Verdana">Hi everyone!</FONT>
<BR><FONT SIZE=2 FACE="Verdana">I am new to linux and my current project is to port linux on our custom hardware based on PPC405EP(AMCC).</FONT>
<BR><FONT SIZE=2 FACE="Verdana">Currently we are in a hardware design phase but I am finding it hard to decide the Flash and SDRAM Memory size.</FONT>
<BR><FONT SIZE=2 FACE="Verdana">We are planning to us 2.6 Kernel, with minimum hardware interfaces.</FONT>
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<P><FONT SIZE=2 FACE="Verdana">Should we use Kernel 2.4 or 2.6?</FONT>
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<P><FONT SIZE=2 FACE="Verdana">Main components of my target device are as follows..</FONT>
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<P><FONT SIZE=2 FACE="Verdana">1)AMCC PPC405EP processor operating at 66.66Mhz External Oscillator(Hope we can go for higher operating frequencies by configuring internal registers of PPC).</FONT></P>
<P><FONT SIZE=2 FACE="Verdana">2)Virtex-2 Pro FPGA - memory mapped to PPC405.</FONT>
<BR><FONT SIZE=2 FACE="Verdana">3)Ethernet Connectivity.</FONT>
<BR><FONT SIZE=2 FACE="Verdana">4)IrDA.</FONT>
<BR><FONT SIZE=2 FACE="Verdana">5)Two RS232 Serial Ports.</FONT>
<BR><FONT SIZE=2 FACE="Verdana">6) IIC Bus.</FONT>
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<P><FONT SIZE=2 FACE="Verdana">I assume the binary size of my application that will run on linux would be around 2 to 3 MB. By considering these facts of my hardware, what would be the size of kernel? And how many drivers I may require? What would be the size of my root file system? </FONT></P>
<P><FONT SIZE=2 FACE="Verdana">Is it necessary to have a NAND Flash to handle the power failures? Or any CFI compliant NOR Flash would do!</FONT>
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<P><FONT SIZE=2 FACE="Verdana">There will be parameters of about 65KB are to be used and these parameters can be changed in the field. This parameter block will have 2 copies to avoid data corruption due to power fail. Hence to avoid the use of NAND Flash I will be using 2 Parameter files to read and write(into flash) in a linux environment during normal operation. Am I right??</FONT></P>
<P><FONT SIZE=2 FACE="Verdana">In this mailing list I have read the typical size of U-BOOT will be around 256KB as suggested by Wolfgang Denk.</FONT>
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<P><FONT SIZE=2 FACE="Verdana">A rough approximation of Flash and SDRAM size would help me a lot to proceed with my hardware design. </FONT>
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<P><FONT SIZE=2 FACE="Verdana">Pardon me If I am asking too basic questions, I know I have to do lot of reading before I proceed. </FONT>
<BR><FONT SIZE=2 FACE="Verdana">Your inputs are valuable to me!</FONT>
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<P><FONT SIZE=2 FACE="Verdana">Thanks in advance for your support,</FONT>
<BR><FONT SIZE=2 FACE="Verdana">BR,</FONT>
<BR><FONT SIZE=2 FACE="Verdana">Albert David.</FONT>
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