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authorAaron Durbin <adurbin@chromium.org>2014-08-27 10:28:49 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-03-27 08:03:53 +0100
commitebfee7e9914770b126ba8451ef824d763e1c66c5 (patch)
tree4dac995095d0b116e30639032b0579c13c3b571a
parentaf46e80b0ecbd82c3492045061dd552a0e9c5a66 (diff)
downloadcoreboot-ebfee7e9914770b126ba8451ef824d763e1c66c5.tar.xz
tegra132: implement smp_processor_id()
Implement smp_processor_id() for the arm64 cores. BUG=chrome-os-partner:31545 BRANCH=None TEST=Built. Change-Id: Id2fca068f92cdc816b02b5e7ce1229517787684a Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: d5c5c68329631ce0fc3cebef1c2422aa44ac192d Original-Change-Id: I7a1cd2f94ba4ae1854450cc60ef8a62f2457aabb Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/214664 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9008 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
-rw-r--r--src/soc/nvidia/tegra132/Makefile.inc1
-rw-r--r--src/soc/nvidia/tegra132/cpu_lib.S27
2 files changed, 28 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra132/Makefile.inc b/src/soc/nvidia/tegra132/Makefile.inc
index 96961c8027..447963970c 100644
--- a/src/soc/nvidia/tegra132/Makefile.inc
+++ b/src/soc/nvidia/tegra132/Makefile.inc
@@ -52,6 +52,7 @@ ramstage-y += addressmap.c
ramstage-y += cbfs.c
ramstage-y += cbmem.c
ramstage-y += cpu.c
+ramstage-y += cpu_lib.S
ramstage-y += timer.c
ramstage-y += clock.c
ramstage-y += soc.c
diff --git a/src/soc/nvidia/tegra132/cpu_lib.S b/src/soc/nvidia/tegra132/cpu_lib.S
new file mode 100644
index 0000000000..6d458d3ab7
--- /dev/null
+++ b/src/soc/nvidia/tegra132/cpu_lib.S
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+.text
+.global smp_processor_id
+smp_processor_id:
+ /* Core 0 and 1 are encoded in the Aff0 (7:0) field of MPIDR_EL1. */
+ mrs x0, mpidr_el1
+ uxtb w0, w0
+ ret