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-rw-r--r--src/arch/arm64/Makefile.inc1
-rw-r--r--src/arch/arm64/include/arch/stages.h7
-rw-r--r--src/arch/arm64/romstage.c39
3 files changed, 47 insertions, 0 deletions
diff --git a/src/arch/arm64/Makefile.inc b/src/arch/arm64/Makefile.inc
index e2c44eb479..6bb7196805 100644
--- a/src/arch/arm64/Makefile.inc
+++ b/src/arch/arm64/Makefile.inc
@@ -107,6 +107,7 @@ romstage-$(CONFIG_ARM64_USE_ARCH_TIMER) += arch_timer.c
romstage-y += memset.S
romstage-y += memcpy.S
romstage-y += memmove.S
+romstage-y += romstage.c
romstage-y += transition.c transition_asm.S
rmodules_arm64-y += memset.S
diff --git a/src/arch/arm64/include/arch/stages.h b/src/arch/arm64/include/arch/stages.h
index 9a88ea7fbe..2d6d583fce 100644
--- a/src/arch/arm64/include/arch/stages.h
+++ b/src/arch/arm64/include/arch/stages.h
@@ -21,4 +21,11 @@
void stage_entry(void);
+/* This function is the romstage platform entry point, and should contain all
+ chipset and mainboard setup until DRAM is initialized and accessible. */
+void platform_romstage_main(void);
+/* This is an optional hook to run further chipset or mainboard code after DRAM
+ and associated support frameworks (like CBMEM) have been initialized. */
+void platform_romstage_postram(void);
+
#endif
diff --git a/src/arch/arm64/romstage.c b/src/arch/arm64/romstage.c
new file mode 100644
index 0000000000..8cdb16baef
--- /dev/null
+++ b/src/arch/arm64/romstage.c
@@ -0,0 +1,39 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 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.
+ */
+
+#include <arch/exception.h>
+#include <arch/stages.h>
+#include <cbmem.h>
+#include <console/console.h>
+#include <program_loading.h>
+#include <timestamp.h>
+
+__weak void platform_romstage_main(void) { /* no-op, for bring-up */ }
+__weak void platform_romstage_postram(void) { /* no-op */ }
+
+void main(void)
+{
+ timestamp_add_now(TS_START_ROMSTAGE);
+
+ console_init();
+ exception_init();
+
+ platform_romstage_main();
+ cbmem_initialize_empty();
+ platform_romstage_postram();
+
+ run_ramstage();
+}