powerpc/8xxx: Add is_core_disabled to remove disabled cores from dtb
If we explicitly disabled a core remove it from the dtb we pass on to
the kernel.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/cpu/mpc86xx/mp.c b/arch/powerpc/cpu/mpc86xx/mp.c
index 24eb30a..30c99eb 100644
--- a/arch/powerpc/cpu/mpc86xx/mp.c
+++ b/arch/powerpc/cpu/mpc86xx/mp.c
@@ -66,6 +66,23 @@
return 0;
}
+int is_core_disabled(int nr) {
+ immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR;
+ ccsr_gur_t *gur = &immap->im_gur;
+ u32 devdisr = in_be32(&gur->devdisr);
+
+ switch (nr) {
+ case 0:
+ return (devdisr & MPC86xx_DEVDISR_CPU0);
+ case 1:
+ return (devdisr & MPC86xx_DEVDISR_CPU1);
+ default:
+ printf("Invalid cpu number for disable %d\n", nr);
+ }
+
+ return 0;
+}
+
int cpu_release(int nr, int argc, char * const argv[])
{
/* dummy function so common/cmd_mp.c will build