I've submitted a patch [1] to support our Baltos systems back in the May. There was an issue with dynamically detecting RAM size as the systems can have either 256MB or 512MB modules. So far u-boot was able to detect the RAM size dynamically. In order to do so it uses following code in arch/arm/cpu/armv7/am33xx/emif4.c: int dram_init(void) { #ifndef CONFIG_SKIP_LOWLEVEL_INIT sdram_init(); #endif /* dram_init must store complete ramsize in gd->ram_size */ gd->ram_size = get_ram_size( (void *)CONFIG_SYS_SDRAM_BASE, CONFIG_MAX_RAM_BANK_SIZE); return 0; } void dram_init_banksize(void) { gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; gd->bd->bi_dram[0].size = gd->ram_size; } This peace of code will be excuted in u-boot.img (not in MLO). In Barebox we have get_ram_size(), that provides real RAM size and am335x_sdram_size(), that returns RAM controller settings. So far DDR controler will be configured for 512MB regardless of the module. Hence the return value from am335x_sdram_size() cannot be used for crating ram0 node. What were the best way to provide get_ram_size() from lowlevel.c to board.c, where I would invoke: arm_add_mem_device("ram0", 0x80000000, sdram_size); [1] http://lists.infradead.org/pipermail/barebox/2016-May/027224.html Yegor _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox