Merge git://www.denx.de/git/u-boot-marvell

1 files changed, 81 insertions, 0 deletions

diff --git a/arch/arm/mach-mvebu/armada3700/cpu.c b/arch/arm/mach-mvebu/armada3700/cpu.c
new file mode 100644
index 0000000..6499eec
--- /dev/null
+++ b/arch/arm/mach-mvebu/armada3700/cpu.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/soc.h>
+#include <asm/armv8/mmu.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Armada 3700 */
+#define MVEBU_GPIO_NB_REG_BASE		(MVEBU_REGISTER(0x13800))
+
+#define MVEBU_TEST_PIN_LATCH_N		(MVEBU_GPIO_NB_REG_BASE + 0x8)
+#define MVEBU_XTAL_MODE_MASK		BIT(9)
+#define MVEBU_XTAL_MODE_OFFS		9
+#define MVEBU_XTAL_CLOCK_25MHZ		0x0
+#define MVEBU_XTAL_CLOCK_40MHZ		0x1
+
+#define MVEBU_NB_WARM_RST_REG		(MVEBU_GPIO_NB_REG_BASE + 0x40)
+#define MVEBU_NB_WARM_RST_MAGIC_NUM	0x1d1e
+
+static struct mm_region mvebu_mem_map[] = {
+	{
+		/* RAM */
+		.phys = 0x0UL,
+		.virt = 0x0UL,
+		.size = 0x80000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	},
+	{
+		/* SRAM, MMIO regions */
+		.phys = 0xd0000000UL,
+		.virt = 0xd0000000UL,
+		.size = 0x02000000UL,	/* 32MiB internal registers */
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE
+	},
+	{
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = mvebu_mem_map;
+
+void reset_cpu(ulong ignored)
+{
+	/*
+	 * Write magic number of 0x1d1e to North Bridge Warm Reset register
+	 * to trigger warm reset
+	 */
+	writel(MVEBU_NB_WARM_RST_MAGIC_NUM, MVEBU_NB_WARM_RST_REG);
+}
+
+/*
+ * get_ref_clk
+ *
+ * return: reference clock in MHz (25 or 40)
+ */
+u32 get_ref_clk(void)
+{
+	u32 regval;
+
+	regval = (readl(MVEBU_TEST_PIN_LATCH_N) & MVEBU_XTAL_MODE_MASK) >>
+		MVEBU_XTAL_MODE_OFFS;
+
+	if (regval == MVEBU_XTAL_CLOCK_25MHZ)
+		return 25;
+	else
+		return 40;
+}