On Fri, Mar 23, 2018 at 04:18:53PM +0800, Icenowy Zheng wrote: > Allwinner 64-bit SoCs can use 4GiB DRAM chip, however their memory map > has only allocated 3GiB for DRAM, so only 3GiB of the DRAM is > accessible.
How would that work in Linux? > Add a Kconfig option for the maximum accessible DRAM. > > For A80 it should be a much higher value (8GiB), but as I have no A80 > device to test and originally U-Boot only supports 2GiB DRAM on A80, it > currently still falls under the 2GiB situation. I guess we have LPAE on armv7 to deal with this nicely. Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot