arm64: Add Xilinx ZynqMP support
Add basic Xilinx ZynqMP arm64 support.
Serial and SD is supported.
It supports emulation platfrom ep108 and QEMU.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/cpu/armv8/zynqmp/Makefile b/arch/arm/cpu/armv8/zynqmp/Makefile
new file mode 100644
index 0000000..a997e04
--- /dev/null
+++ b/arch/arm/cpu/armv8/zynqmp/Makefile
@@ -0,0 +1,9 @@
+#
+# (C) Copyright 2014 - 2015 Xilinx, Inc.
+# Michal Simek <michal.simek@xilinx.com>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y += clk.o
+obj-y += cpu.o
diff --git a/arch/arm/cpu/armv8/zynqmp/clk.c b/arch/arm/cpu/armv8/zynqmp/clk.c
new file mode 100644
index 0000000..0af619d
--- /dev/null
+++ b/arch/arm/cpu/armv8/zynqmp/clk.c
@@ -0,0 +1,49 @@
+/*
+ * (C) Copyright 2014 - 2015 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned long get_uart_clk(int dev_id)
+{
+ u32 ver = zynqmp_get_silicon_version();
+
+ switch (ver) {
+ case ZYNQMP_CSU_VERSION_EP108:
+ return 25000000;
+ }
+
+ return 133000000;
+}
+
+#ifdef CONFIG_CLOCKS
+/**
+ * set_cpu_clk_info() - Initialize clock framework
+ * Always returns zero.
+ *
+ * This function is called from common code after relocation and sets up the
+ * clock framework. The framework must not be used before this function had been
+ * called.
+ */
+int set_cpu_clk_info(void)
+{
+ gd->cpu_clk = get_tbclk();
+
+ /* Support Veloce to show at least 1MHz via bdi */
+ if (gd->cpu_clk > 1000000)
+ gd->bd->bi_arm_freq = gd->cpu_clk / 1000000;
+ else
+ gd->bd->bi_arm_freq = 1;
+
+ gd->bd->bi_dsp_freq = 0;
+
+ return 0;
+}
+#endif
diff --git a/arch/arm/cpu/armv8/zynqmp/cpu.c b/arch/arm/cpu/armv8/zynqmp/cpu.c
new file mode 100644
index 0000000..6fae03c
--- /dev/null
+++ b/arch/arm/cpu/armv8/zynqmp/cpu.c
@@ -0,0 +1,28 @@
+/*
+ * (C) Copyright 2014 - 2015 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+
+#define ZYNQ_SILICON_VER_MASK 0xF000
+#define ZYNQ_SILICON_VER_SHIFT 12
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned int zynqmp_get_silicon_version(void)
+{
+ gd->cpu_clk = get_tbclk();
+
+ switch (gd->cpu_clk) {
+ case 50000000:
+ return ZYNQMP_CSU_VERSION_QEMU;
+ }
+
+ return ZYNQMP_CSU_VERSION_EP108;
+}