ARM: at91: Add initial support for the EVB-KSZ9477 eval board

The EVB-KSZ9477 is an evaluation board for the KSZ9477 ethernet switch.
This board is equipped with a atsama5d3 SoC with 256MiB of SDRAM, 256MiB
of NAND flash and a SD card slot.

For now only second stage booting is supported with AT91bootstrap as
first stage loader.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 29 insertions, 0 deletions

diff --git a/arch/arm/boards/microchip-ksz9477-evb/Makefile b/arch/arm/boards/microchip-ksz9477-evb/Makefile
new file mode 100644
index 0000000000..b08c4a93ca
--- /dev/null
+++ b/arch/arm/boards/microchip-ksz9477-evb/Makefile
@@ -0,0 +1 @@
+lwl-y += lowlevel.o
diff --git a/arch/arm/boards/microchip-ksz9477-evb/lowlevel.c b/arch/arm/boards/microchip-ksz9477-evb/lowlevel.c
new file mode 100644
index 0000000000..639958a459
--- /dev/null
+++ b/arch/arm/boards/microchip-ksz9477-evb/lowlevel.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2018 Ahmad Fatoum, Pengutronix
+ *
+ * Under GPLv2
+ */
+
+#include <common.h>
+#include <init.h>
+
+#include <asm/barebox-arm-head.h>
+#include <asm/barebox-arm.h>
+
+#include <mach/hardware.h>
+
+extern char __dtb_at91_microchip_ksz9477_evb_start[];
+
+ENTRY_FUNCTION(start_sama5d3_xplained_ung8071, r0, r1, r2)
+{
+	void *fdt;
+
+	arm_cpu_lowlevel_init();
+
+	arm_setup_stack(SAMA5D3_SRAM_BASE + SAMA5D3_SRAM_SIZE - 16);
+
+	fdt = __dtb_at91_microchip_ksz9477_evb_start + get_runtime_offset();
+
+	barebox_arm_entry(SAMA5_DDRCS, SZ_256M, fdt);
+}