plat/arm: relocate the jump_if_cpu_midr macro.
macro jump_if_cpu_midr is used commonly by many arm platform.
It has now been relocated to common place to remove duplication
of code.
Change-Id: Ic0876097dbc085df4f90eadb4b7687dde7c726da
Signed-off-by: Deepak Pandey <Deepak.Pandey@arm.com>
diff --git a/include/lib/cpus/aarch64/cpu_macros.S b/include/lib/cpus/aarch64/cpu_macros.S
index 026a48e..4672cbc 100644
--- a/include/lib/cpus/aarch64/cpu_macros.S
+++ b/include/lib/cpus/aarch64/cpu_macros.S
@@ -272,3 +272,17 @@
cmp \_reg, #1
beq \_label
.endm
+
+ /*
+ * Helper macro that reads the part number of the current
+ * CPU and jumps to the given label if it matches the CPU
+ * MIDR provided.
+ *
+ * Clobbers x0.
+ */
+ .macro jump_if_cpu_midr _cpu_midr, _label
+ mrs x0, midr_el1
+ ubfx x0, x0, MIDR_PN_SHIFT, #12
+ cmp w0, #((\_cpu_midr >> MIDR_PN_SHIFT) & MIDR_PN_MASK)
+ b.eq \_label
+ .endm