Re: [Paparazzi-devel] lpc21iap bootloader ap.elf >256k failed

[Martin Mueller]

Hi Oliver,

you found a bug :-) It is not the size but the fact that your .text 
sector ended at the last word of a 4k page with an odd address. The 
following page was then erroneously flashed (with garbage) and collided 
with the .data sector. Interesting that it did not occur/was not 
reported over the last 5 years (probability 0.07% ?).

Fixed in the master branch.

Martin



On 21.06.2011 22:40, Oliver Riesener wrote:
> Hi paparazzi-team,
>
> if a compiled ap.elf exceeds 256K then i got an error from bootloader v1.3.
>
> Image file > 256K
> 262454/1024=256.30273437500000000000
>
> Any helpful suggestions ?, the device has 512k flash and seems ok,
> becourse the error occurs also on another hw too.
>
> Cheers,
>
> olri
>
> paparazzi/var/HB_COPTER/ap/ap.elf :
> section size addr
> .text 159742 16384
> .ARM.exidx 0 176126
> .ctors 0 176126
> .dtors 0 176126
> .data 14044 1073741824
> .bss 6500 1073755868
> .stack 4096 1073762560
> .comment 2088 0
> .debug_aranges 1824 0
> .debug_pubnames 1922 0
> .debug_info 33074 0
> .debug_abbrev 13296 0
> .debug_line 16261 0
> .debug_frame 2852 0
> .debug_str 5787 0
> .debug_ranges 968 0
> Total 262454
>
> cd sw/airborne; make PAPARAZZI_SRC=paparazzi PAPARAZZI_HOME=paparazzi
> TARGET=ap upload
> Using gcc-arm 3.4.4 packaged by paparazzi.
> paparazzi/sw/ground_segment/lpc21iap/lpc21iap
> paparazzi/var/HB_COPTER/ap/ap.elf
> lpc21iap v1.2
> .........
> Found USB device
> BootROM code: 2.12
> Part ID: 0x0402FF25 (LPC2148, 512k Flash, 32k+8k RAM)
> BootLoader version: 1.3
> ############################################ISP error (10:COMPARE_ERROR)
> compare MEM failed at 0x0002B000 base 0x40004000 size 0x00001000
> make[1]: *** [upload] Fehler 1
> make: *** [ap.upload] Fehler 2
>
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