On Wednesday 04 September 2013 06:48 PM, Tom Rini wrote: > On Wed, Sep 04, 2013 at 11:43:01AM +0300, Oleg Kosheliev wrote: >> Hi, Andr? >> >>> ________________________________________ >>> From: u-boot-boun...@lists.denx.de [u-boot-boun...@lists.denx.de] on >> behalf of Andr? >Schaller [an.sch...@googlemail.com] >>> Sent: Wednesday, September 04, 2013 10:09 AM >>> To: u-boot@lists.denx.de >>> Subject: [U-Boot] SPL binary too large for OMAP4460 OCM >>> >>> 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, >>> Andr? >>> _______________________________________________ >>> U-Boot mailing list >>> U-Boot@lists.denx.de >>> http://lists.denx.de/mailman/listinfo/u-boot >> We can use the area 0x40300000 - 0x4030bfff for downloading the SPL image. >> If the image exceed this - it leads to corrupting the ROM code stack and >> the device hangs up. >> See my patch [U-Boot] [RFC PATCH] armv7:omap4-common: Correct check of the >> SPL image size. (It's not in mainline. I'll do some corrections and send v2 >> soon.) >> For HS devices the SPL image is loaded from the address 0x40304350. So we >> have 0x4030bfff - 0x40304350 = 0x7CAF = 31,919 bytes for SPL. >> The area from 0x40300000 till 0x40304350 in HS devices is used for security >> data. > FWIW, this issue is one reason I think we need to stop trying to make GP > devices work kinda-sorta like the HS devices do and instead add a CONFIG > for HS devices that sets things correctly. > > Yes, correct for OMAP4.
Regards, Sricharan _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot