[coreboot-gerrit] New patch to review for coreboot: 1885a05 tegra132: implement smp_processor_id()

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9008

-gerrit

commit 1885a0561b820e408d1769c4061e59cbb0fc61d3
Author: Aaron Durbin <adurbin at chromium.org>
Date:   Wed Aug 27 10:28:49 2014 -0500

    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 at chromium.org>
    Original-Commit-Id: d5c5c68329631ce0fc3cebef1c2422aa44ac192d
    Original-Change-Id: I7a1cd2f94ba4ae1854450cc60ef8a62f2457aabb
    Original-Signed-off-by: Aaron Durbin <adurbin at chromium.org>
    Original-Reviewed-on: https://chromium-review.googlesource.com/214664
    Original-Reviewed-by: Furquan Shaikh <furquan at chromium.org>
---
 src/soc/nvidia/tegra132/Makefile.inc |  1 +
 src/soc/nvidia/tegra132/cpu_lib.S    | 27 +++++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/src/soc/nvidia/tegra132/Makefile.inc b/src/soc/nvidia/tegra132/Makefile.inc
index 96961c8..4479639 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 0000000..6d458d3
--- /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