On Wed, Jan 25, 2017 at 06:40:38PM +0800, Chen-Yu Tsai wrote: [hacking around the broken A80 TrustZone implementation] > This is doable, and it is actually what Allwinner's kernel does, but is > really hackish. The released 3.4 kernel also has the same workarounds > for A83T. So it's also possible the A83T has the same issues.
FWIW, the kernel that ships with my A80 based media player produces this: [ 0.000000] Linux version 3.4.39+ (lzq@sunchip-CS24-TY) (gcc version 4.6.3 20120201 (prerelease) (crosstool-NG linaro-1.13.1-2012.02-20120222 - Linaro GCC 2012.02) ) #1 SMP PREEMPT Sat Nov 14 03:33:12 UTC 2015 ... [ 0.262230] CPU4: failed to boot: -22 [ 0.302298] CPU5: failed to boot: -22 [ 0.342350] CPU6: failed to boot: -22 [ 0.382421] CPU7: failed to boot: -22 So I guess you are not alone in having trouble getting PSCI to work on the A80. However, when trying out your patches, I also once or twice got a failure booting CPU2 although CPU3 and CPU4 came up fine. > So, if there's still interest in getting a working PSCI environment > for the A80/A83T, I'll look into doing a workaround patch for GIC-400. > Otherwise I'm going to go back and revive my MCPM patches for in-kernel > SMP support. I vote for whatever works. I'll also happily test it. Is there a git tree I should keep an eye on? -- Rask Ingemann Lambertsen _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
