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authorAaron Durbin <adurbin@chromium.org>2014-10-28 17:01:28 -0500
committerPatrick Georgi <pgeorgi@google.com>2015-04-09 14:40:06 +0200
commit03c657f288a908691b0b0c07fc3ff3d0ec3612fb (patch)
tree563af55ded80952270e485cc671876b36120c78c /src/arch/arm64/include/arch
parent32005aa9587db57e2ddaf5dfcbe6280f6c876580 (diff)
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arm64: add mpidr field to cpu_info struct
The cpu_info struct can be easily obtained at runtime based on smp_processor_id(). To allow easier mapping between cpu_info and PSCI entities add the mpidr info to the cpu_info struct. BUG=chrome-os-partner:32136 BRANCH=None TEST=Built and booted in SMP. Noted MPIDR messages for each cpu. Change-Id: I390392a391d953a3b144b56b42e7b81f90d5fec1 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: d091706f64f1fc4b1b72b1825cab82a5d3cbf23e Original-Change-Id: Ib10ee4413d467b22050edec5388c0cae57128911 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/226481 Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: http://review.coreboot.org/9388 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/arch/arm64/include/arch')
-rw-r--r--src/arch/arm64/include/arch/mpidr.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/arch/arm64/include/arch/mpidr.h b/src/arch/arm64/include/arch/mpidr.h
new file mode 100644
index 000000000..0735a6a1b
--- /dev/null
+++ b/src/arch/arm64/include/arch/mpidr.h
@@ -0,0 +1,64 @@
+/*
+ * 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
+ */
+
+#ifndef __ARCH_MPIDR_H__
+#define __ARCH_MPIDR_H__
+
+#include <stdint.h>
+#include <arch/lib_helpers.h>
+
+enum {
+ MPIDR_RES1_SHIFT = 31,
+ MPIDR_U_SHIFT = 30,
+ MPIDR_MT_SHIFT = 24,
+
+ MPIDR_AFFINITY_0_SHIFT = 0,
+ MPIDR_AFFINITY_1_SHIFT = 8,
+ MPIDR_AFFINITY_2_SHIFT = 16,
+ MPIDR_AFFINITY_3_SHIFT = 32,
+ MPIDR_AFFINITY_MASK = 0xff,
+};
+
+static inline uint64_t mpidr_mask(uint8_t aff3, uint8_t aff2,
+ uint8_t aff1, uint8_t aff0)
+{
+ uint64_t mpidr = 0;
+
+ mpidr |= (uint64_t)aff3 << MPIDR_AFFINITY_3_SHIFT;
+ mpidr |= (uint64_t)aff2 << MPIDR_AFFINITY_2_SHIFT;
+ mpidr |= (uint64_t)aff1 << MPIDR_AFFINITY_1_SHIFT;
+ mpidr |= (uint64_t)aff0 << MPIDR_AFFINITY_0_SHIFT;
+
+ return mpidr;
+}
+
+static inline uint64_t read_mpidr(void)
+{
+ return raw_read_mpidr_el1();
+}
+
+static inline uint64_t read_affinity_mpidr(void)
+{
+ uint64_t affinity_mask;
+ affinity_mask = mpidr_mask(MPIDR_AFFINITY_MASK, MPIDR_AFFINITY_MASK,
+ MPIDR_AFFINITY_MASK, MPIDR_AFFINITY_MASK);
+ return read_mpidr() & affinity_mask;
+}
+
+#endif /* __ARCH_MPIDR_H__ */