[U-Boot] SPL binary too large for OMAP4460 OCM

bin4ry 0xbin4ry at gmail.com
Wed Sep 4 11:04:29 CEST 2013


Am 04.09.2013 10:56, schrieb Sricharan R:
> On Wednesday 04 September 2013 02:18 PM, Michael Trimarchi wrote:
>> Hi
>>
>> On Wed, Sep 4, 2013 at 10:44 AM, Sricharan R <r.sricharan at ti.com> wrote:
>>> On Wednesday 04 September 2013 01:01 PM, bin4ry wrote:
>>>> Hi everybody,
>>>>
>>>> I need to add functionality to the SPL code. I tried to implement in a
>>>> memory-saving way, however, the SPL is about 45 kB after compilation. To
>>>> get compilation working, I had to set CONFIG_SPL_MAX_SIZE to (45 *
>>>> 1024). Now, the SPL as well as u-boot won't boot. After the device'
>>>> (PandaBoard ES - OMAP4460) reset, nothing happens regarding it's output
>>>> on terminal.
>>>>
>>>> My question: is it theoretically possible to to establish a successfully
>>>> booting SPL with ~45 kB in size for this device? The device'
>>>> on-chip-memory is 56kB so it could fit in there. If so, what needs to be
>>>> configured / tuned to get it working? Are there any other features I
>>>> could omit from the binary to make it smaller?
>>>>
>>>> Thanks a lot,
>>>> -b
>>>> _______________________________________________
>>>> U-Boot mailing list
>>>> U-Boot at lists.denx.de
>>>> http://lists.denx.de/mailman/listinfo/u-boot
>>>>
>>>  Do you have a Secure device or GP ?
>>>
>> if it is Pandaboard? No he has not. I have increased up to 40Kb and it
>> works with serial boot and
>> sdcard/emmc boot.
>  Sorry i missed to read PANDA. So it is anyways GP.
>  and you changed the CONFIG_SPL_TEXT_BASE as well right ?
>
> Regards,
>  Sricharan
First off, sorry for double-posting to this list.

No, the PandaBoard is no HS but a GP device.

This is my configuration:

/* Defines for SPL */
#define CONFIG_SPL
#define CONFIG_SPL_TEXT_BASE        0x40303000
#define CONFIG_SPL_MAX_SIZE        (45 * 1024)
#define CONFIG_SPL_STACK        LOW_LEVEL_SRAM_STACK

The MLO binary has 46094 Bytes. Actually I should have enough space
(from 0x40300000 - 0x4030bfff -> ~49 kB). However, the device does not
start. Right now I am reviewing the code to check, whether it is because
of the code and not because of the size that makes u-boot does not start.


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