ARM: uniphier: support Debug UART
For ARM32 architecture, CONFIG_DEBUG_LL is available for early
low-level debugging (and actually UniPhier 32bit SoCs use it), but
ARM64 architecture does not support it. Instead, CONFIG_DEBUG_UART
is available as an architecture-independent debug facility.
This commit supports it on all the UniPhier SoCs (including the new
ARMv8 SoCs), which is very useful for new SoC bringups.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/debug-uart/Makefile b/arch/arm/mach-uniphier/debug-uart/Makefile
new file mode 100644
index 0000000..0bad718
--- /dev/null
+++ b/arch/arm/mach-uniphier/debug-uart/Makefile
@@ -0,0 +1,17 @@
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+ifdef CONFIG_SPL_BUILD
+obj-$(CONFIG_ARCH_UNIPHIER_SLD3) += debug-uart-sld3.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD4) += debug-uart-ld4.o
+obj-$(CONFIG_ARCH_UNIPHIER_PRO4) += debug-uart-pro4.o
+obj-$(CONFIG_ARCH_UNIPHIER_SLD8) += debug-uart-sld8.o
+obj-$(CONFIG_ARCH_UNIPHIER_PRO5) += debug-uart-pro5.o
+obj-$(CONFIG_ARCH_UNIPHIER_PXS2) += debug-uart-pxs2.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD6B) += debug-uart-ld6b.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD11) += debug-uart-ld20.o
+obj-$(CONFIG_ARCH_UNIPHIER_LD20) += debug-uart-ld20.o
+endif
+
+obj-y += debug-uart.o