arch/arm/cpu/armv8/zynqmp/cpu.c

   1 /*
   2  * (C) Copyright 2014 - 2015 Xilinx, Inc.
   3  * Michal Simek <michal.simek@xilinx.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/arch/hardware.h>
  10 #include <asm/arch/sys_proto.h>
  11 #include <asm/armv8/mmu.h>
  12 #include <asm/io.h>
  13
  14 #define ZYNQ_SILICON_VER_MASK   0xF000
  15 #define ZYNQ_SILICON_VER_SHIFT  12
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 static struct mm_region zynqmp_mem_map[] = {
  20         {
  21                 .virt = 0x0UL,
  22                 .phys = 0x0UL,
  23                 .size = 0x80000000UL,
  24                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  25                          PTE_BLOCK_INNER_SHARE
  26         }, {
  27                 .virt = 0x80000000UL,
  28                 .phys = 0x80000000UL,
  29                 .size = 0x70000000UL,
  30                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  31                          PTE_BLOCK_NON_SHARE |
  32                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  33         }, {
  34                 .virt = 0xf8000000UL,
  35                 .phys = 0xf8000000UL,
  36                 .size = 0x07e00000UL,
  37                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  38                          PTE_BLOCK_NON_SHARE |
  39                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  40         }, {
  41 #if defined(CONFIG_DEFINE_TCM_OCM_MMAP)
  42                 .virt = 0xffe00000UL,
  43                 .phys = 0xffe00000UL,
  44                 .size = 0x00200000UL,
  45                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  46                          PTE_BLOCK_INNER_SHARE
  47         }, {
  48 #endif
  49                 .virt = 0x400000000UL,
  50                 .phys = 0x400000000UL,
  51                 .size = 0x200000000UL,
  52                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  53                          PTE_BLOCK_NON_SHARE |
  54                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  55         }, {
  56                 .virt = 0x600000000UL,
  57                 .phys = 0x600000000UL,
  58                 .size = 0x800000000UL,
  59                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
  60                          PTE_BLOCK_INNER_SHARE
  61         }, {
  62                 .virt = 0xe00000000UL,
  63                 .phys = 0xe00000000UL,
  64                 .size = 0xf200000000UL,
  65                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
  66                          PTE_BLOCK_NON_SHARE |
  67                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
  68         }, {
  69                 /* List terminator */
  70                 0,
  71         }
  72 };
  73 struct mm_region *mem_map = zynqmp_mem_map;
  74
  75 u64 get_page_table_size(void)
  76 {
  77         return 0x14000;
  78 }
  79
  80 #ifdef CONFIG_SYS_MEM_RSVD_FOR_MMU
  81 int reserve_mmu(void)
  82 {
  83         initialize_tcm(TCM_LOCK);
  84         memset((void *)ZYNQMP_TCM_BASE_ADDR, 0, ZYNQMP_TCM_SIZE);
  85         gd->arch.tlb_size = PGTABLE_SIZE;
  86         gd->arch.tlb_addr = ZYNQMP_TCM_BASE_ADDR;
  87
  88         return 0;
  89 }
  90 #endif
  91
  92 static unsigned int zynqmp_get_silicon_version_secure(void)
  93 {
  94         u32 ver;
  95
  96         ver = readl(&csu_base->version);
  97         ver &= ZYNQMP_SILICON_VER_MASK;
  98         ver >>= ZYNQMP_SILICON_VER_SHIFT;
  99
 100         return ver;
 101 }
 102
 103 unsigned int zynqmp_get_silicon_version(void)
 104 {
 105         if (current_el() == 3)
 106                 return zynqmp_get_silicon_version_secure();
 107
 108         gd->cpu_clk = get_tbclk();
 109
 110         switch (gd->cpu_clk) {
 111         case 0 ... 1000000:
 112                 return ZYNQMP_CSU_VERSION_VELOCE;
 113         case 50000000:
 114                 return ZYNQMP_CSU_VERSION_QEMU;
 115         case 4000000:
 116                 return ZYNQMP_CSU_VERSION_EP108;
 117         }
 118
 119         return ZYNQMP_CSU_VERSION_SILICON;
 120 }
 121
 122 #define ZYNQMP_MMIO_READ        0xC2000014
 123 #define ZYNQMP_MMIO_WRITE       0xC2000013
 124
 125 int __maybe_unused invoke_smc(u32 pm_api_id, u32 arg0, u32 arg1, u32 arg2,
 126                               u32 arg3, u32 *ret_payload)
 127 {
 128         /*
 129          * Added SIP service call Function Identifier
 130          * Make sure to stay in x0 register
 131          */
 132         struct pt_regs regs;
 133
 134         regs.regs[0] = pm_api_id;
 135         regs.regs[1] = ((u64)arg1 << 32) | arg0;
 136         regs.regs[2] = ((u64)arg3 << 32) | arg2;
 137
 138         smc_call(&regs);
 139
 140         if (ret_payload != NULL) {
 141                 ret_payload[0] = (u32)regs.regs[0];
 142                 ret_payload[1] = upper_32_bits(regs.regs[0]);
 143                 ret_payload[2] = (u32)regs.regs[1];
 144                 ret_payload[3] = upper_32_bits(regs.regs[1]);
 145                 ret_payload[4] = (u32)regs.regs[2];
 146         }
 147
 148         return regs.regs[0];
 149 }
 150
 151 #define ZYNQMP_SIP_SVC_GET_API_VERSION          0xC2000001
 152
 153 #define ZYNQMP_PM_VERSION_MAJOR         0
 154 #define ZYNQMP_PM_VERSION_MINOR         3
 155 #define ZYNQMP_PM_VERSION_MAJOR_SHIFT   16
 156 #define ZYNQMP_PM_VERSION_MINOR_MASK    0xFFFF
 157
 158 #define ZYNQMP_PM_VERSION       \
 159         ((ZYNQMP_PM_VERSION_MAJOR << ZYNQMP_PM_VERSION_MAJOR_SHIFT) | \
 160                                  ZYNQMP_PM_VERSION_MINOR)
 161
 162 #if defined(CONFIG_CLK_ZYNQMP)
 163 void zynqmp_pmufw_version(void)
 164 {
 165         int ret;
 166         u32 ret_payload[PAYLOAD_ARG_CNT];
 167         u32 pm_api_version;
 168
 169         ret = invoke_smc(ZYNQMP_SIP_SVC_GET_API_VERSION, 0, 0, 0, 0,
 170                          ret_payload);
 171         pm_api_version = ret_payload[1];
 172
 173         if (ret)
 174                 panic("PMUFW is not found - Please load it!\n");
 175
 176         printf("PMUFW:\tv%d.%d\n",
 177                pm_api_version >> ZYNQMP_PM_VERSION_MAJOR_SHIFT,
 178                pm_api_version & ZYNQMP_PM_VERSION_MINOR_MASK);
 179
 180         if (pm_api_version != ZYNQMP_PM_VERSION)
 181                 panic("PMUFW version error. Expected: v%d.%d\n",
 182                       ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR);
 183 }
 184 #endif
 185
 186 static int zynqmp_mmio_rawwrite(const u32 address,
 187                       const u32 mask,
 188                       const u32 value)
 189 {
 190         u32 data;
 191         u32 value_local = value;
 192
 193         zynqmp_mmio_read(address, &data);
 194         data &= ~mask;
 195         value_local &= mask;
 196         value_local |= data;
 197         writel(value_local, (ulong)address);
 198         return 0;
 199 }
 200
 201 static int zynqmp_mmio_rawread(const u32 address, u32 *value)
 202 {
 203         *value = readl((ulong)address);
 204         return 0;
 205 }
 206
 207 int zynqmp_mmio_write(const u32 address,
 208                       const u32 mask,
 209                       const u32 value)
 210 {
 211         if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3)
 212                 return zynqmp_mmio_rawwrite(address, mask, value);
 213         else
 214                 return invoke_smc(ZYNQMP_MMIO_WRITE, address, mask,
 215                                   value, 0, NULL);
 216
 217         return -EINVAL;
 218 }
 219
 220 int zynqmp_mmio_read(const u32 address, u32 *value)
 221 {
 222         u32 ret_payload[PAYLOAD_ARG_CNT];
 223         u32 ret;
 224
 225         if (!value)
 226                 return -EINVAL;
 227
 228         if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3) {
 229                 ret = zynqmp_mmio_rawread(address, value);
 230         } else {
 231                 ret = invoke_smc(ZYNQMP_MMIO_READ, address, 0, 0,
 232                                  0, ret_payload);
 233                 *value = ret_payload[1];
 234         }
 235
 236         return ret;
 237 }