arm64: add spin table support

There was a hacky and one-off spin table support in tegra132.
Make this support generic for all arm64 chips.

BUG=chrome-os-partner:32082
BRANCH=None
TEST=Ran with and without secure monitor booting smp into the kernel.

Change-Id: I3425ab0c30983d4c74d0aa465dda38bb2c91c83b
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 024dc3f3e5262433a56ed14934db837b5feb1748
Original-Change-Id: If12083a9afc3b2be663d36cfeed10f9b74bae3c8
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/218654
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9084
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/src/arch/arm64/include/arch/spintable.h b/src/arch/arm64/include/arch/spintable.h
new file mode 100644
index 0000000000..b583ddbeea
--- /dev/null
+++ b/src/arch/arm64/include/arch/spintable.h
@@ -0,0 +1,50 @@
+/*
+ * 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_SPINTABLE_H__
+#define __ARCH_SPINTABLE_H__
+
+struct spintable_attributes {
+	void (*entry)(void *);
+	void *addr;
+};
+
+#if IS_ENABLED(CONFIG_ARCH_SPINTABLE)
+
+/* Initialize spintable with provided monitor address. */
+void spintable_init(void *monitor_address);
+
+/* Start spinning on the non-boot CPUS. */
+void spintable_start(void);
+
+/* Return NULL on failure, otherwise the spintable info. */
+const struct spintable_attributes *spintable_get_attributes(void);
+
+#else /* IS_ENABLED(CONFIG_SPINTABLE) */
+
+static inline void spintable_init(void *monitor_address) {}
+static inline void spintable_start(void) {}
+static inline const struct spintable_attributes *spintable_get_attributes(void)
+{
+	return NULL;
+}
+
+#endif /* IS_ENABLED(CONFIG_SPINTABLE) */
+
+#endif /* __ARCH_SPINTABLE_H__ */