Raspberry Pi: Difference between revisions

Note that later Raspberry Pis will pass you a device tree blob instead in R2. ATAGs still can be found at 0x100, if you disable device tree (r2 contains 0x0 in this case) - identifiable because they always start with an ATAG_CORE (0x54410001). In comparison, Device Tree is probably far more useful, but is more complex. A device tree starts with the uint32_t 0xd00dfeed '''(big-endian).''' Note the big endian - this applies to all values. ARM defaults to little endian, so you'll probably want to write some endian routines early!