Generating boot.img for dell streak

[Guest smokku]

Reading the header of the working "boot.img", pagesize is 0x800, then it is 2k pagesize, but every block must be align to 4k (zero padding). Changes to "makebootimg.c" are:

//static unsigned char padding[2048] = { 0, };

static unsigned char padding[4096] = { 0, };

...


	if(write(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) goto fail;

	//if(write_padding(fd, pagesize, sizeof(hdr))) goto fail;

	if(write_padding(fd, 4096, sizeof(hdr))) goto fail;


	if(write(fd, kernel_data, hdr.kernel_size) != hdr.kernel_size) goto fail;

	//if(write_padding(fd, pagesize, hdr.kernel_size)) goto fail;

	if(write_padding(fd, 4096, hdr.kernel_size)) goto fail;


	if(write(fd, ramdisk_data, hdr.ramdisk_size) != hdr.ramdisk_size) goto fail;

	//if(write_padding(fd, pagesize, hdr.ramdisk_size)) goto fail;

	if(write_padding(fd, 4096, hdr.ramdisk_size)) goto fail;

Besides "makebootimg.c" must be modified because "-base" argument is not working in Dell Streak:

		/* default load addresses */

	//hdr.kernel_addr =  0x10008000;

	//hdr.ramdisk_addr = 0x11000000;

	//hdr.second_addr =  0x10F00000;

	//hdr.tags_addr =	0x10000100;


	hdr.kernel_addr =  0x20008000;

	hdr.ramdisk_addr = 0x24000000;

	hdr.second_addr =  0x20F00000;

	hdr.tags_addr =	0x20000100;

Anyway, we have been able to boot with kernel 2.6.29-perf, but we have failed to update the kernel (yet).

About SHA values, it is ignored, boot.img worked with SHA values to 0.

Even with this changes to system/core/mkbootimg/mkbootimg.c my reconstructed boot.img still does not boot :huh:

gzip 1F 8B 08 00 signatures are at offsets:

0x1000 - kernel

0x23f000 - initrd

Edited August 29, 2010 by smokku