Beaglebone Black defconfigs

[Sascha Hauer]

Hi Konsti, nice to see you here :)

On Fri, Jun 11, 2021 at 12:05:43PM +0200, Konstantin Kletschke wrote:
> Hello,
> 
> I am currently trying to bring up barebox for my Beaglebone Black devices.
> 
> I did an "ARCH=arm CROSS_COMPILE=arm-buildroot-linux-gnueabihf- make am335x_mlo_defconfig”, make and
> copied resulting barebox-am33xx-beaglebone-mlo.img to MLO into my FAT boot partition.

Yup, correct.

> 
> Then I did "ARCH=arm CROSS_COMPILE=arm-buildroot-linux-gnueabihf- make omap3530_beagle_defconfig”, make 
> and copied resulting barebox-beagleboard.img to barebox.bin into my boot FAT.

That's the config for the beaglebo*ard*, for the beaglebo*ne* you'll
have to use the omap_defconfig. This is the config for all omap/am33xx
boards. The resulting image is images/barebox-am33xx-beaglebone.img.

> 
> Is the the different prefix in the defconfigs (am33… vs. omap35…) reasonable? 
> Is this approach generally reasonable?
> 
> Many references in internet to matching
> defconfigs I found refer to non existing ones, there seems to happen great overhaul meanwhile. 
> I am also asking because, well, it does not work:
> 
> barebox 2021.05.0-00093-g7689055a8 #2 Fri Jun 11 09:01:36 CEST 2021
> 
> 
> Board: TI AM335x BeagleBone
> detected 'BeagleBone Black'
> omap-hsmmc 48060000.mmc at 0.of: registered as mmc0
> omap-hsmmc 481d8000.mmc at 0.of: registered as mmc1
> booting from MMC
> mmc1: detected MMC card version 5.1
> mmc1: registered mmc1
> unable to handle paging request at address 0x4020f010

Looks consistent. 0x4020f010 is OMAP3_SRAM_SCRATCH_SPACE + 0x10 used in
beagle_board_init_sdram(). It seems you start a binary for the
beagleboard on your beaglebone.

Regards,
 Sascha

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