Hi Marek cc: Michael On Tue, Mar 5, 2019 at 4:37 AM Marek Vasut <marek.va...@gmail.com> wrote: > > The ATF can pass additional information via the first four registers, > x0...x3. The R-Car Gen3 with mainline ATF, register x1 contains pointer > to a device tree with platform information. Parse this device tree and > extract DRAM size information from it. This is useful on systems where > the DRAM size can vary between configurations.
1. Do the ATF changes supporting this feature already exist in mainline ATF? 2. I see more DRAM-related compile-time knobs in vanilla ATF: ➜ arm-trusted-firmware (c48d02bade88) $ grep "DRAM.*:" plat/renesas/rcar/platform.mk RCAR_DRAM_SPLIT := 0 RCAR_DRAM_LPDDR4_MEMCONF :=1 RCAR_DRAM_DDR3L_MEMCONF :=1 RCAR_DRAM_DDR3L_MEMDUAL :=1 RCAR_DRAM_CHANNEL :=15 My understanding is that these are local to ATF and U-Boot can stay agnostic about them? IOW, DRAM start and size are totally enough for U-Boot? TIA! Best regards, Eugeniu. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
