On Wed, Jul 07, 2021 at 12:58:54PM +0200, Stephan Gerhold wrote: > At the moment the "stemmy" board attempts to detect the RAM size with > a simple memory test (get_ram_size()). Unfortunately, this does not work > correctly for devices with 768 MiB RAM (e.g. Samsung Galaxy Ace 2 > (GT-I8160), "codina"). Reading/writing memory after the 768 MiB RAM > succeeds but actually overwrites some earlier parts of the memory. > > For U-Boot this does not result in any major problems, but on Linux > this will eventually lead to strange crashes because of the memory > corruption. > > Since the "stemmy" U-Boot port is designed to be chainloaded from > the original Samsung bootloader, the most reliable way to get the > available amount of RAM is to look at the ATAGS passed by the Samsung > bootloader. Fortunately, the header used to generate ATAGS in U-Boot > (asm/setup.h) can also be easily used to parse them. > > Also clarify and simplify stemmy.h a bit to make it more clear where > some of the magic values in there are actually coming from. > > Signed-off-by: Stephan Gerhold <[email protected]> > Reviewed-by: Linus Walleij <[email protected]>
Applied to u-boot/master, thanks! -- Tom
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