Hi,
I'm pretty new to u-boot and I am trying to use it on the mx28 platform. I have an MX28 EVK (rev A), which I'm using. I was able to build u-boot 2009 with all the patches supplied by Freescale, and to get it working.
I moved on to u-boot 2011 because I wanted to use the I2C, SPI and other tools supported.
The problem I have is that when I build u-boot, it hangs at after dram_init during the initialization sequence.
This is what I get from u-boot...
PowerPrep start initialize power...
Battery Voltage = 4.26V
boot from battery. 5v input not detected
Apr 4 201220:57:25
FRAC 0x92925552
memory type is DDR2
Wait for ddr ready 1power 0x00820616
Frac 0x92925552
start change cpu freq
hbus 0x00000003
cpu 0x00010001
start test memory accress
ddr2 0x40000000
finish simple test
U-Boot 2011.12 (Apr 04 2012 - 16:55:47)
Freescale i.MX28 family
I2C: ready
DRAM: 0 Bytes
I realize this problem was supposed to have been fixed by several patches, but it still exists.
On my platform it seems to occur if SPL is configured, and during relocation.
U-boot is not able to get the proper RAM size from the scratch registers (SCRATCH0, and SCRATCH1).
I've even tried the latest u-boot (2012.04.rc1) and I still get the same results.
Can anyone help me or point me in the right direction?
Thanks.
Chiz