If you look at the other MIPS boards, e.g. dbau1x00, you will see that you setup SDRAM with assembler code to create a temporary stack in sdram before executing any c code. (start.S calls memsetup.S)
/Thomas
calvin wrote:
Hi,
In the process of porting U-boot for Malta which uses mips 4Kec I discovered that the stack required for intial C environment can neither be obtained by some on-chip memory (IMMR in MPC8xx ) nor by using DCACHE in locked mode. Mips 4KC has the DCache locked mode support but Mips 4KEC has it only through external pin interface.
I am looking for a way of not using the C code till code has started running from RAM. But how do I get the value of gd(global data pointer) which U-boot expects? README file does not mention anything about mips registers which are specifially used for this purpose.
Thanks and Regards, Pooja
This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click _______________________________________________ U-Boot-Users mailing list U-Boot-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/u-boot-users