On 20:26 Fri 03 Apr , rahanesh@tataelxsi.co.in wrote:
Hi All,
I am currently working on OMAP3530 fromMistral solutions. This is the booting sequence in OMAP3530
The OMAP3530 contains a boot ROM starting at location 0x00000000. When power on, the PC register jumps there. The boot ROM then looks at the sys_boot pins to determine boot order. For NAND booting,
the x-loader is located at offset 0 in NAND. Actually the first two words in NAND are the length of the x-loader and the address in internal RAM to load it. The boot ROM then reads the x-loader from NAND into
internal RAM and jumps to that. The x-loader configures the clocks and SDRAM and then reads u-boot from NAND into SDRAM. After u-boot is in SDRAM, the x-loader jumps to u-boot and u-boot starts to run. If
I don't press any key for 4 seconds uboot brings linux and linux shell comes up.
Instead of linux I need to bring my custom RTOS. As linux, custom RTOS will reside in NAND Flash too.
What is the procedure for bringing an OS from uboot.? As uboot bringing Linux , it needs to bring an RTOS too.
How do I write a script for that? How do I tell uboot to load My custom rtos instead of linux. I need to avoid the loading of linux and bring in my RTOS
it will depend on your OS boot requierement but if you can boot it as a elf try bootelf
Best Regards, J.