allwinner: Introduce basic platform support
This platform supports Allwinner's SoCs with ARMv8 cores. So far they
all sport a single cluster of Cortex-A53 cores.
"sunxi" is the original code name used for this platform, and since it
appears in the Linux kernel and in U-Boot as well, we use it here as a
short file name prefix and for identifiers.
This port includes BL31 support only. U-Boot's SPL takes the role of the
primary loader, also doing the DRAM initialization. It then loads the
rest of the firmware, namely ATF and U-Boot (BL33), then hands execution
over to ATF.
This commit includes the basic platform code shared across all SoCs.
There is no platform.mk yet.
[Andre: moved files into proper directories, supported RESET_TO_BL31,
various clean ups and simplifications ]
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/plat/allwinner/common/include/sunxi_def.h b/plat/allwinner/common/include/sunxi_def.h
new file mode 100644
index 0000000..e68fbe4
--- /dev/null
+++ b/plat/allwinner/common/include/sunxi_def.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __SUNXI_DEF_H__
+#define __SUNXI_DEF_H__
+
+/* Clock configuration */
+#define SUNXI_OSC24M_CLK_IN_HZ 24000000
+
+/* UART configuration */
+#define SUNXI_UART0_BAUDRATE 115200
+#define SUNXI_UART0_CLK_IN_HZ SUNXI_OSC24M_CLK_IN_HZ
+
+#endif /* __SUNXI_DEF_H__ */