Hi, could someone please answer these questions. On 32 bit arm, when interfacing with linux without device tree, ATAGs are used for hand off. The questions are about MEM32 atags. First, is it possible that there will be more than one MEM32 atag on a platform? in the 32 bit arm realm? thus - more than 1 SDRAM region. If so, then: are those regions (atags representing them) guaranteed to: 1) represent real disjoint areas in system space (no redundant splitting into adjacent areas) 2) not overlap and have no zero size 3) be ordered in ascending order in atag list
I couldn't find any specification on this anywhere, maybe this will be read by someone who knows how uboot does prepare ATAGs and will be kind enough to answer. For which I thank in advance.