[U-Boot] uboot/odroid test report

[Przemyslaw Marczak <p.marczak@samsung.com>]

Hello Daniel,
On 07/17/2014 05:35 PM, Daniel Drake wrote:
> On Thu, Jul 17, 2014 at 3:59 PM, Przemyslaw Marczak
> <p.marczak@samsung.com> wrote:
>> So BL1, BL2 are running in iRAM(required small size), and u-boot is running
>> from a RAM.
>>
>> The main reason for using existing BL1 and BL2 binaries is
>> that bl1 and bl2 are just working proper.
>
> Fair enough, I was just a bit worried/curious that bl2 is only working
> "by accident", and we have some strange mashup of 2 uboot versions
> involved in the boot process.
>
>> I will check it tomorrow but it has works on Ubuntu.
>> The bootz command takes only 2 arguments here -> ${image_addr}
>> ${ramdisk_addr} which are the numbers set by:
>>   "run check_dtb" and "run check_ramdisk"
>
> Maybe I made a mistake in my testing then, either way I've moved onto
> a custom boot script now.
>
> But just to clarify the bootz usage..
>
> image_addr is defined as:
> setenv image_addr ${kerneladdr} - ${fdtaddr};
>
> so with
>      bootz ${image_addr} ${ramdisk_addr};
>
> you are actually passing
>      bootz ${kerneladdr} - ${fdtaddr} ${ramdisk_addr};
>
> Maybe it works for you, although the documentation suggests its usage
> is not quite like that:
> static char bootz_help_text[] =
>      "[addr [initrd[:size]] [fdt]]\n"
>      "    - boot Linux zImage stored in memory\n"
>      "\tThe argument 'initrd' is optional and specifies the address\n"
>      "\tof the initrd in memory. The optional argument ':size' allows\n"
>      "\tspecifying the size of RAW initrd.\n"
> #if defined(CONFIG_OF_LIBFDT)
>      "\tWhen booting a Linux kernel which requires a flat device-tree\n"
>      "\ta third argument is required which is the address of the\n"
>      "\tdevice-tree blob. To boot that kernel without an initrd image,\n"
>      "\tuse a '-' for the second argument. If you do not pass a third\n"
>      "\ta bd_info struct will be passed instead\n"
> #endif
>      "";
> #endif
>
> Daniel
>

You were right. I made a mistake, but even that - the ramdisk for ubuntu 
was loaded - because of kernel without fdt.
Thank you for testing, I will fix this and send the patches again.

Regards,
-- 
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com