diff options
Diffstat (limited to 'src/soc/nvidia/tegra132/cpu_lib.S')
| -rw-r--r-- | src/soc/nvidia/tegra132/cpu_lib.S | 27 |
1 files changed, 27 insertions, 0 deletions
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 |