Hallo Wolfgang,
Just played around with my usb stick and reduced the size of the first partition. When I now try the usbboot command the number of blocks is exact the size of the partition.
This doesn't make sense.
I did the following steps:
A9M9750 # usb part print_part of 0
Partition Map for USB device 0 -- Partition Type: DOS
Partition Start Sector Num Sectors Type 1 1 10239 83 2 10240 10240 83 3 20480 235520 83
A9M9750 # usbboot 10000 0:1
Loading from USB device 0, partition 1: Name: usbda1 Type: U-Boot First Block: 1, # of blocks: 10239, Block Size: 512
** Bad Magic Number **
Ok, let me see if the image on the stick is corrupt. I loaded it with the fatload command. A9M9750 # fatload usb 0:1 10000 uImage reading uImage ...............................................................................................................
1144120 bytes read A9M9750 # bootm ## Booting image at 00010000 ... Image Name: Linux-2.6.10-fs1 Created: 2005-02-02 13:23:01 UTC Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 1144056 Bytes = 1.1 MB Load Address: 00008000 Entry Point: 00008000 Verifying Checksum ... OK OK
And it works. Nice. But whats going/I'm doing wrong with the usbboot command?
Does the "usbboot" command print the image header? Does the data look correct, especially the image size?
Not at all. So
Try adding some debug prints to "common/cmd_usb.c"; like here:
396 hdr = (image_header_t *)addr; 397 398 if (hdr->ih_magic == IH_MAGIC) { 399 print_image_hdr (hdr); 400 cnt = (hdr->ih_size + sizeof(image_header_t)); 401 cnt += info.blksz - 1; 402 cnt /= info.blksz; 403 cnt -= 1; 404 } else { 405 printf("\n** Bad Magic Number **\n"); 406 return 1; 407 }
I put the print_image_hdr() before the if clause, but as expected I only get garbage. Image Name: Created: 2024-06-19 15:57:52 UTC Image Type: Invalid CPU Invalid OS Invalid Image (uncompressed) Data Size: 33816832 Bytes = 32.3 MB Load Address: 020002fe Entry Point: 27f80800
Gruß, Jonas