1 files changed, 31 insertions, 0 deletions
diff --git a/src/mainboard/arm/rdn2/bootblock_custom.S b/src/mainboard/arm/rdn2/bootblock_custom.S
new file mode 100644
index 0000000000..f8cca02d9f
--- /dev/null
+++ b/src/mainboard/arm/rdn2/bootblock_custom.S
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <arch/asm.h>
+
+/*
+ * Note: This board uses boot flow: TFA -> coreboot.
+ */
+ENTRY(_start)
+
+	/* TF-A arg which contains a pointer to fdt */
+	ldr	x1, =_fdt_pointer
+	str	x0, [x1]
+
+	msr SPSel, #0 /* use SP_EL0 */
+
+	/* ==== stack init from arm64_init_cpu ==== */
+	ldr	x2, =0xdeadbeefdeadbeef
+	ldr	x0, =_stack
+	ldr	x1, =_estack
+1:
+	stp	x2, x2, [x0], #16
+	cmp	x0, x1
+	bne	1b
+
+	sub	sp, x0, #16
+
+	/* ==== END ==== */
+
+	/* Jump to main() in DRAM. */
+	bl	main
+ENDPROC(_start)