PSCI: Add documentation and fix plat_is_my_cpu_primary()
This patch adds the necessary documentation updates to porting_guide.md
for the changes in the platform interface mandated as a result of the new
PSCI Topology and power state management frameworks. It also adds a
new document `platform-migration-guide.md` to aid the migration of existing
platform ports to the new API.
The patch fixes the implementation and callers of
plat_is_my_cpu_primary() to use w0 as the return parameter as implied by
the function signature rather than x0 which was used previously.
Change-Id: Ic11e73019188c8ba2bd64c47e1729ff5acdcdd5b
diff --git a/include/common/el3_common_macros.S b/include/common/el3_common_macros.S
index 3b96081..7946e72 100644
--- a/include/common/el3_common_macros.S
+++ b/include/common/el3_common_macros.S
@@ -181,7 +181,7 @@
* -------------------------------------------------------------
*/
bl plat_is_my_cpu_primary
- cbnz x0, do_primary_cold_boot
+ cbnz w0, do_primary_cold_boot
/* This is a cold boot on a secondary CPU */
bl plat_secondary_cold_boot_setup