Hi folks,
I'm trying to get mainline u-boot working on my DNS323 (Orion5x based). Until I am confident in the config, I'm using a chainloaded approach, wrapping my featureful u-boot in an image file:
$ mkimage -A arm -O u-boot -T kernel -C none -a 0x3000000 -e 0x3000000 -n "UBoot dns323" -d u-boot.bin uImage.bin
I am trying to boot the default kernel that is already flashed into the device first. The first problem is that the DNS323 uses an incorrect mach-type value of 526, while the registered value is 1542. See http://wiki.dns323.info/software:kernel). I have modified arch/arm/include/asm/mach-types.h to set MACH_TYPE_DNS323 to the "correct" Dlink value, which should match what the default kernel is expecting.
Unfortunately, all I get is:
DNS323B1> bootm FF820000 ## Booting kernel from Legacy Image at ff820000 ... Image Name: Linux-2.6.12.6-arm1 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 1490204 Bytes = 1.4 MiB Load Address: 00008000 Entry Point: 00008000 Verifying Checksum ... OK Loading Kernel Image ...
and it hangs there.
That appears to be this code from cmd_bootm:
case IH_COMP_NONE: if (load == blob_start) { printf (" XIP %s ... ", type_name); } else { printf (" Loading %s ... ", type_name); memmove_wd ((void *)load, (void *)image_start, image_len, CHUNKSZ); } *load_end = load + image_len; puts("OK\n"); break;
So, the memmove_wd never completes, it seems.
I added a debug statement at the top of memmove_wd, and got:
Moving memory from ff820040 to 00008000
Is that because the uImage header is 64 bytes?
Also, the following suggests that there may be something wrong with the addresses that I am using:
DNS323B1> bootm FF820000 FF9A0000 ## Booting kernel from Legacy Image at ff820000 ... Image Name: Linux-2.6.12.6-arm1 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 1490204 Bytes = 1.4 MiB Load Address: 00008000 Entry Point: 00008000 Verifying Checksum ... OK ## Loading init Ramdisk from Legacy Image at ff9a0000 ... Image Name: Ramdisk Image Type: ARM Linux RAMDisk Image (gzip compressed) Data Size: 5240600 Bytes = 5 MiB Load Address: 00800000 Entry Point: 00800000 Verifying Checksum ... Bad Data CRC Ramdisk image is corrupt or invalid DNS323B1>
My chainloaded u-boot is configured in an image to load at 0x3000000, and stay there (no relocation), if I have understood these parameters correctly:
-a 0x3000000 -e 0x3000000
Can anyone see what I am doing wrong?
Many thanks!
Rogan