GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <linux/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>
+
+/* Armada 7k/8k */
+#define MVEBU_RFU_BASE			(MVEBU_REGISTER(0x6f0000))
+#define RFU_GLOBAL_SW_RST		(MVEBU_RFU_BASE + 0x84)
+#define RFU_SW_RESET_OFFSET		0
+
+#define SAR0_REG			(MVEBU_REGISTER(0x2400200))
+#define BOOT_MODE_MASK			0x3f
+#define BOOT_MODE_OFFSET		4
+
+/*
+ * The following table includes all memory regions for Armada 7k and
+ * 8k SoCs. The Armada 7k is missing the CP110 slave regions here. Lets
+ * define these regions at the beginning of the struct so that they
+ * can be easier removed later dynamically if an Armada 7k device is detected.
+ * For a detailed memory map, please see doc/mvebu/armada-8k-memory.txt
+ */
+#define ARMADA_7K8K_COMMON_REGIONS_START	2
+static struct mm_region mvebu_mem_map[] = {
+	/* Armada 80x0 memory regions include the CP1 (slave) units */
+	{
+		/* SRAM, MMIO regions - CP110 slave region */
+		.phys = 0xf4000000UL,
+		.virt = 0xf4000000UL,
+		.size = 0x02000000UL,	/* 32MiB internal registers */
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE
+	},
+	{
+		/* PCI CP1 regions */
+		.phys = 0xfa000000UL,
+		.virt = 0xfa000000UL,
+		.size = 0x04000000UL,	/* 64MiB CP110 slave PCI space */
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE
+	},
+	/* Armada 80x0 and 70x0 common memory regions start here */
+	{
+		/* RAM */
+		.phys = 0x0UL,
+		.virt = 0x0UL,
+		.size = 0x80000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE
+	},
+	{
+		/* SRAM, MMIO regions - AP806 region */
+		.phys = 0xf0000000UL,
+		.virt = 0xf0000000UL,
+		.size = 0x01000000UL,	/* 16MiB internal registers */
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE
+	},
+	{
+		/* SRAM, MMIO regions - CP110 master region */
+		.phys = 0xf2000000UL,
+		.virt = 0xf2000000UL,
+		.size = 0x02000000UL,	/* 32MiB internal registers */
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE
+	},
+	{
+		/* PCI CP0 regions */
+		.phys = 0xf6000000UL,
+		.virt = 0xf6000000UL,
+		.size = 0x04000000UL,	/* 64MiB CP110 master PCI space */
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE
+	},
+	{
+		0,
+	}
+};
+
+struct mm_region *mem_map = mvebu_mem_map;
+
+void enable_caches(void)
+{
+	/*
+	 * Armada 7k is not equipped with the CP110 slave CP. In case this
+	 * code runs on an Armada 7k device, lets remove the CP110 slave
+	 * entries from the memory mapping by moving the start to the
+	 * common regions.
+	 */
+	if (of_machine_is_compatible("marvell,armada7040"))
+		mem_map = &mvebu_mem_map[ARMADA_7K8K_COMMON_REGIONS_START];
+
+	icache_enable();
+	dcache_enable();
+}
+
+void reset_cpu(ulong ignored)
+{
+	u32 reg;
+
+	reg = readl(RFU_GLOBAL_SW_RST);
+	reg &= ~(1 << RFU_SW_RESET_OFFSET);
+	writel(reg, RFU_GLOBAL_SW_RST);
+}
+
+/*
+ * TODO - implement this functionality using platform
+ *        clock driver once it gets available
+ * Return NAND clock in Hz
+ */
+u32 mvebu_get_nand_clock(void)
+{
+	unsigned long NAND_FLASH_CLK_CTRL = 0xF2440700UL;
+	unsigned long NF_CLOCK_SEL_MASK = 0x1;
+	u32 reg;
+
+	reg = readl(NAND_FLASH_CLK_CTRL);
+	if (reg & NF_CLOCK_SEL_MASK)
+		return 400 * 1000000;
+	else
+		return 250 * 1000000;
+}
+
+int mmc_get_env_dev(void)
+{
+	u32 reg;
+	unsigned int boot_mode;
+
+	reg = readl(SAR0_REG);
+	boot_mode = (reg >> BOOT_MODE_OFFSET) & BOOT_MODE_MASK;
+
+	switch (boot_mode) {
+	case 0x28:
+	case 0x2a:
+		return 0;
+	case 0x29:
+	case 0x2b:
+		return 1;
+	}
+
+	return CONFIG_SYS_MMC_ENV_DEV;
+}