1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
10 #include <linux/libfdt.h>
12 #include <asm/system.h>
13 #include <asm/arch/cpu.h>
14 #include <asm/arch/soc.h>
15 #include <asm/armv8/mmu.h>
18 #define MVEBU_RFU_BASE (MVEBU_REGISTER(0x6f0000))
19 #define RFU_GLOBAL_SW_RST (MVEBU_RFU_BASE + 0x84)
20 #define RFU_SW_RESET_OFFSET 0
22 #define SAR0_REG (MVEBU_REGISTER(0x2400200))
23 #define BOOT_MODE_MASK 0x3f
24 #define BOOT_MODE_OFFSET 4
27 * The following table includes all memory regions for Armada 7k and
28 * 8k SoCs. The Armada 7k is missing the CP110 slave regions here. Lets
29 * define these regions at the beginning of the struct so that they
30 * can be easier removed later dynamically if an Armada 7k device is detected.
31 * For a detailed memory map, please see doc/mvebu/armada-8k-memory.txt
33 #define ARMADA_7K8K_COMMON_REGIONS_START 2
34 static struct mm_region mvebu_mem_map[] = {
35 /* Armada 80x0 memory regions include the CP1 (slave) units */
37 /* SRAM, MMIO regions - CP110 slave region */
40 .size = 0x02000000UL, /* 32MiB internal registers */
41 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
48 .size = 0x04000000UL, /* 64MiB CP110 slave PCI space */
49 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
52 /* Armada 80x0 and 70x0 common memory regions start here */
58 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
62 /* SRAM, MMIO regions - AP806 region */
65 .size = 0x01000000UL, /* 16MiB internal registers */
66 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
70 /* SRAM, MMIO regions - CP110 master region */
73 .size = 0x02000000UL, /* 32MiB internal registers */
74 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
81 .size = 0x04000000UL, /* 64MiB CP110 master PCI space */
82 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
90 struct mm_region *mem_map = mvebu_mem_map;
92 void enable_caches(void)
95 * Armada 7k is not equipped with the CP110 slave CP. In case this
96 * code runs on an Armada 7k device, lets remove the CP110 slave
97 * entries from the memory mapping by moving the start to the
100 if (of_machine_is_compatible("marvell,armada7040"))
101 mem_map = &mvebu_mem_map[ARMADA_7K8K_COMMON_REGIONS_START];
107 void reset_cpu(ulong ignored)
111 reg = readl(RFU_GLOBAL_SW_RST);
112 reg &= ~(1 << RFU_SW_RESET_OFFSET);
113 writel(reg, RFU_GLOBAL_SW_RST);
117 * TODO - implement this functionality using platform
118 * clock driver once it gets available
119 * Return NAND clock in Hz
121 u32 mvebu_get_nand_clock(void)
123 unsigned long NAND_FLASH_CLK_CTRL = 0xF2440700UL;
124 unsigned long NF_CLOCK_SEL_MASK = 0x1;
127 reg = readl(NAND_FLASH_CLK_CTRL);
128 if (reg & NF_CLOCK_SEL_MASK)
129 return 400 * 1000000;
131 return 250 * 1000000;
134 int mmc_get_env_dev(void)
137 unsigned int boot_mode;
139 reg = readl(SAR0_REG);
140 boot_mode = (reg >> BOOT_MODE_OFFSET) & BOOT_MODE_MASK;
151 return CONFIG_SYS_MMC_ENV_DEV;