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>

8 files changed, 172 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7a2f91c..5e255cb 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -592,6 +592,10 @@ config ZYNQ
 	select CPU_V7
 	select SUPPORT_SPL
 
+config TARGET_XILINX_ZYNQMP
+	bool "Support Xilinx ZynqMP Platform"
+	select ARM64
+
 config TEGRA
 	bool "NVIDIA Tegra"
 	select SUPPORT_SPL
@@ -840,6 +844,7 @@ source "board/vpac270/Kconfig"
 source "board/wandboard/Kconfig"
 source "board/woodburn/Kconfig"
 source "board/xaeniax/Kconfig"
+source "board/xilinx/zynqmp/Kconfig"
 source "board/zipitz2/Kconfig"
 
 source "arch/arm/Kconfig.debug"
diff --git a/arch/arm/cpu/armv8/Makefile b/arch/arm/cpu/armv8/Makefile
index 0c10223..dee5e25 100644
--- a/arch/arm/cpu/armv8/Makefile
+++ b/arch/arm/cpu/armv8/Makefile
@@ -16,3 +16,4 @@ obj-y	+= tlb.o
 obj-y	+= transition.o
 
 obj-$(CONFIG_FSL_LSCH3) += fsl-lsch3/
+obj-$(CONFIG_TARGET_XILINX_ZYNQMP) += zynqmp/
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;
+}
diff --git a/arch/arm/include/asm/arch-zynqmp/clk.h b/arch/arm/include/asm/arch-zynqmp/clk.h
new file mode 100644
index 0000000..d55bc31
--- /dev/null
+++ b/arch/arm/include/asm/arch-zynqmp/clk.h
@@ -0,0 +1,13 @@
+/*
+ * (C) Copyright 2014 - 2015 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_CLK_H_
+#define _ASM_ARCH_CLK_H_
+
+unsigned long get_uart_clk(int dev_id);
+
+#endif /* _ASM_ARCH_CLK_H_ */
diff --git a/arch/arm/include/asm/arch-zynqmp/hardware.h b/arch/arm/include/asm/arch-zynqmp/hardware.h
new file mode 100644
index 0000000..97fb49a
--- /dev/null
+++ b/arch/arm/include/asm/arch-zynqmp/hardware.h
@@ -0,0 +1,52 @@
+/*
+ * (C) Copyright 2014 - 2015 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_HARDWARE_H
+#define _ASM_ARCH_HARDWARE_H
+
+#define ZYNQ_SERIAL_BASEADDR0	0xFF000000
+#define ZYNQ_SERIAL_BASEADDR1	0xFF001000
+
+#define ZYNQ_SDHCI_BASEADDR0	0xFF160000
+#define ZYNQ_SDHCI_BASEADDR1	0xFF170000
+
+#define ZYNQMP_CRL_APB_BASEADDR	0xFF5E0000
+#define ZYNQMP_CRL_APB_TIMESTAMP_REF_CTRL_CLKACT	0x1000000
+
+struct crlapb_regs {
+	u32 reserved0[74];
+	u32 timestamp_ref_ctrl; /* 0x128 */
+	u32 reserved0_1[53];
+	u32 boot_mode; /* 0x200 */
+	u32 reserved1[26];
+};
+
+#define crlapb_base ((struct crlapb_regs *)ZYNQMP_CRL_APB_BASEADDR)
+
+#define ZYNQMP_IOU_SCNTR	0xFF250000
+#define ZYNQMP_IOU_SCNTR_COUNTER_CONTROL_REGISTER_EN	0x1
+#define ZYNQMP_IOU_SCNTR_COUNTER_CONTROL_REGISTER_HDBG	0x2
+
+struct iou_scntr {
+	u32 counter_control_register;
+	u32 reserved0[7];
+	u32 base_frequency_id_register;
+};
+
+#define iou_scntr ((struct iou_scntr *)ZYNQMP_IOU_SCNTR)
+
+/* Bootmode setting values */
+#define BOOT_MODES_MASK	0x0000000F
+#define SD_MODE		0x00000005
+#define JTAG_MODE	0x00000000
+
+/* Board version value */
+#define ZYNQMP_CSU_VERSION_SILICON	0x0
+#define ZYNQMP_CSU_VERSION_EP108	0x1
+#define ZYNQMP_CSU_VERSION_QEMU		0x3
+
+#endif /* _ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/include/asm/arch-zynqmp/sys_proto.h b/arch/arm/include/asm/arch-zynqmp/sys_proto.h
new file mode 100644
index 0000000..d8e0ba1
--- /dev/null
+++ b/arch/arm/include/asm/arch-zynqmp/sys_proto.h
@@ -0,0 +1,15 @@
+/*
+ * (C) Copyright 2014 - 2015 Xilinx, Inc.
+ * Michal Simek <michal.simek@xilinx.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_SYS_PROTO_H
+#define _ASM_ARCH_SYS_PROTO_H
+
+int zynq_sdhci_init(unsigned long regbase);
+
+unsigned int zynqmp_get_silicon_version(void);
+
+#endif /* _ASM_ARCH_SYS_PROTO_H */