arch/arm/mach-mvebu/armada8k/cpu.c

   1 /*
   2  * Copyright (C) 2016 Stefan Roese <sr@denx.de>
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <fdtdec.h>
  10 #include <libfdt.h>
  11 #include <asm/io.h>
  12 #include <asm/system.h>
  13 #include <asm/arch/cpu.h>
  14 #include <asm/arch/soc.h>
  15 #include <asm/armv8/mmu.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 /* Armada 7k/8k */
  20 #define MVEBU_RFU_BASE                  (MVEBU_REGISTER(0x6f0000))
  21 #define RFU_GLOBAL_SW_RST               (MVEBU_RFU_BASE + 0x84)
  22 #define RFU_SW_RESET_OFFSET             0
  23
  24 static struct mm_region mvebu_mem_map[] = {
  25         {
  26                 /* RAM */
  27                 .phys = 0x0UL,
  28                 .virt = 0x0UL,
  29                 .size = 0x80000000UL,
  30                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  31                          PTE_BLOCK_INNER_SHARE
  32         },
  33         {
  34                 /* SRAM, MMIO regions - AP806 region */
  35                 .phys = 0xf0000000UL,
  36                 .virt = 0xf0000000UL,
  37                 .size = 0x01000000UL,   /* 16MiB internal registers */
  38                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  39                          PTE_BLOCK_NON_SHARE
  40         },
  41         {
  42                 /* SRAM, MMIO regions - CP110 region */
  43                 .phys = 0xf2000000UL,
  44                 .virt = 0xf2000000UL,
  45                 .size = 0x02000000UL,   /* 32MiB internal registers */
  46                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  47                          PTE_BLOCK_NON_SHARE
  48         },
  49         {
  50                 /* List terminator */
  51                 0,
  52         }
  53 };
  54
  55 struct mm_region *mem_map = mvebu_mem_map;
  56
  57 void reset_cpu(ulong ignored)
  58 {
  59         u32 reg;
  60
  61         reg = readl(RFU_GLOBAL_SW_RST);
  62         reg &= ~(1 << RFU_SW_RESET_OFFSET);
  63         writel(reg, RFU_GLOBAL_SW_RST);
  64 }