2 files changed, 57 insertions, 0 deletions
diff --git a/src/arch/arm64/include/arch/startup.h b/src/arch/arm64/include/arch/startup.h
new file mode 100644
index 0000000000..bb3a863754
--- /dev/null
+++ b/src/arch/arm64/include/arch/startup.h
@@ -0,0 +1,46 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 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_ARM64_INCLUDE_ARCH_STARTUP_H__
+#define __ARCH_ARM64_INCLUDE_ARCH_STARTUP_H__
+
+/* Every element occupies 8 bytes (64-bit entries) */
+#define PER_ELEMENT_SIZE_BYTES		8
+#define MAIR_INDEX			0
+#define TCR_INDEX			1
+#define TTBR0_INDEX			2
+#define SCR_INDEX			3
+#define VBAR_INDEX			4
+/* IMPORTANT!!! If any new element is added please update NUM_ELEMENTS */
+#define NUM_ELEMENTS			5
+
+#ifndef __ASSEMBLY__
+
+/*
+ * startup_save_cpu_data is used to save register values that need to be setup
+ * when a CPU starts booting. This is used by secondary CPUs as well as resume
+ * path to directly setup MMU and other related registers.
+ */
+void startup_save_cpu_data(void);
+
+#endif
+
+#endif /* __ARCH_ARM64_INCLUDE_ARCH_STARTUP_H__ */
diff --git a/src/arch/arm64/include/armv8/arch/cpu.h b/src/arch/arm64/include/armv8/arch/cpu.h
index d968a06fe4..34220d9792 100644
--- a/src/arch/arm64/include/armv8/arch/cpu.h
+++ b/src/arch/arm64/include/armv8/arch/cpu.h
@@ -170,4 +170,15 @@ static inline void *secondary_entry_point(void *e)
  */
 void arm64_cpu_startup(void);
 
+/*
+ * The arm64_cpu_startup_resume() initializes a CPU's exception stack and
+ * regular stack as well initializing the C environment for the processor. It
+ * calls into the array of function pointers at symbol c_entry depending
+ * on BSP state. Note that arm64_cpu_startup contains secondary entry
+ * point which can be obtained by secondary_entry_point().
+ * Additionally, it also restores saved register data and enables MMU, caches
+ * and exceptions before jumping to C environment for both BSP and non-BSP CPUs.
+ */
+void arm64_cpu_startup_resume(void);
+
 #endif /* __ARCH_CPU_H__ */