Hi Stefan,
Right. Most likely you just need to tune the chip select timing registers
And of course the size of the CS. What mean by size of CS? Which file I should check for timing register for S29GL512P?
BTW: You might also need to configure a bigger TLB entry for the FLASH
now that you use a bigger FLASH chip. Does uboot support one single TLB entry for 64MB size. At pesent I have configured 4 TLB entries, each 16MB.
On Fri, Apr 9, 2010 at 7:05 PM, Stefan Roese sr@denx.de wrote:
Hi Prakash,
On Friday 09 April 2010 14:11:39 prakash bedge wrote:
What CPU are you using, and what chip-select is the flash using?
I am using PPC440x5 Cpu core. How to check the chip-select flash is
using?
This is a custom PPC4xx version, correct? Which external bus controller is used here? The EBC from IBM as on the AMCC 4xx versions? You need to check your SoC documentation for this.
Earlier I have run the same code for M29W128GH and it works fine. But
with
S29GL512 it is not working. Now the difference is only in size and write/read timings. So I believe
it
should work in smooth manner.
Right. Most likely you just need to tune the chip select timing registers. And of course the size of the CS. No idea how this is done for your external bus controller though.
BTW: You might also need to configure a bigger TLB entry for the FLASH now that you use a bigger FLASH chip.
kilauea.h file is present in the U-boot. So does this board supports S29GL512P Nor flash chip?
Yes. As most AMCC eval boards do.
Cheers, Stefan
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