21.04.2020 18:19, Ard Biesheuvel пишет: > On Wed, 15 Apr 2020 at 17:34, Geert Uytterhoeven > <geert+renesas@xxxxxxxxx> wrote: >> >> Currently, the start address of physical memory is obtained by masking >> the program counter with a fixed mask of 0xf8000000. This mask value >> was chosen as a balance between the requirements of different platforms. >> However, this does require that the start address of physical memory is >> a multiple of 128 MiB, precluding booting Linux on platforms where this >> requirement is not fulfilled. >> >> Fix this limitation by obtaining the start address from the DTB instead, >> if available (either explicitly passed, or appended to the kernel). >> Fall back to the traditional method when needed. >> >> This allows to boot Linux on r7s9210/rza2mevb using the 64 MiB of SDRAM >> on the RZA2MEVB sub board, which is located at 0x0C000000 (CS3 space), >> i.e. not at a multiple of 128 MiB. >> >> Suggested-by: Nicolas Pitre <nico@xxxxxxxxxxx> >> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> >> Reviewed-by: Nicolas Pitre <nico@xxxxxxxxxxx> >> Reviewed-by: Ard Biesheuvel <ardb@xxxxxxxxxx> >> Tested-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> >> Tested-by: Dmitry Osipenko <digetx@xxxxxxxxx> > > This is ready to go into the patch system, no? > > The sooner Russell picks it up, the sooner I can respin my patches > that go on top. > > Thanks, The v5 works for me on NVIDIA Tegra, just in case.
