Hi,

El Sat, Feb 20, 2010 at 05:31:48PM -0800 Vipul Jain ha dit:

1. How to know if u-boot image I have build is build correctly?

the image is build correctly if the file u-boot.bin is generated. another question is if this image is appropriate for your board

2. I have redboot on my EP9302 SOC (Cirrus logic), can I load u-boot in

memory and test if it works? What will be the memory address I need to download the image?

in order to start U-Boot from RAM you must define CONFIG_SKIP_LOWLEVEL_INIT and CONFIG_SKIP_RELOCATE_UBOOT. the memory address depends on your board. for a edb9302 try 0x01000000, for edb9302a 0xc1000000

be aware that even if the U-Boot image starts from RAM this doesn't mean automatically that it will boot on your board. when booting from RAM low-level initialization is skipped (i.e. the environment set up by redboot is used), when U-Boot boots from flash it is in charge to do the low-level init.

3. How can I burn the u-boot image if I find every thing ok?

if your board is a Cirrus Logic edb9302, refer to the paragraph "Download Utility" in chapter 7 of the technical reference manual. otherwise consult the manual provided by your board manufacturer.

i think you could skip step 2 (try to load U-Boot from RAM), as you can always restore your RedBoot bootloader using the same procedure as for flashing the U-Boot image

btw, which version of U-Boot are you using, the current development version or a custom one?

best regards