On Tue, 2018-05-29 at 18:39 +0200, Marek Vasut wrote: > Make sure the ARM ACTLR register has correct configuration, otherwise > the Linux kernel refuses to boot. In particular, the "Write Full Line > of Zeroes" bit must be cleared. > > Signed-off-by: Marek Vasut <ma...@denx.de> > Cc: Chin Liang See <chin.liang....@intel.com> > Cc: Dinh Nguyen <dingu...@kernel.org> > --- > NOTE: This gem was well hidden in the Altera U-Boot fork and is > really needed. > What is not entirely clear to me is WHY ? So why is this needed > ?
I vaguely recall it's related to HW constrain. And check back the downstream U-Boot, actually we need to set the bit instead clearing it. https://github.com/altera-opensource/u-boot-socfpga/blob/socfpga_v2 014.10_arria10_bringup/arch/arm/cpu/armv7/socfpga_arria10/pl310.c Thanks Chin Liang [...] _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
