arch/arm/cpu/armv7/sunxi/cpu_info.c

   1 /*
   2  * (C) Copyright 2007-2011
   3  * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
   4  * Tom Cubie <tangliang@allwinnertech.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <asm/io.h>
  11 #include <asm/arch/cpu.h>
  12 #include <asm/arch/clock.h>
  13 #include <axp221.h>
  14
  15 #ifdef CONFIG_MACH_SUN6I
  16 int sunxi_get_ss_bonding_id(void)
  17 {
  18         struct sunxi_ccm_reg * const ccm =
  19                 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
  20         static int bonding_id = -1;
  21
  22         if (bonding_id != -1)
  23                 return bonding_id;
  24
  25         /* Enable Security System */
  26         setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS);
  27         setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS);
  28
  29         bonding_id = readl(SUNXI_SS_BASE);
  30         bonding_id = (bonding_id >> 16) & 0x7;
  31
  32         /* Disable Security System again */
  33         clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_SS);
  34         clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_SS);
  35
  36         return bonding_id;
  37 }
  38 #endif
  39
  40 #ifdef CONFIG_DISPLAY_CPUINFO
  41 int print_cpuinfo(void)
  42 {
  43 #ifdef CONFIG_MACH_SUN4I
  44         puts("CPU:   Allwinner A10 (SUN4I)\n");
  45 #elif defined CONFIG_MACH_SUN5I
  46         u32 val = readl(SUNXI_SID_BASE + 0x08);
  47         switch ((val >> 12) & 0xf) {
  48         case 0: puts("CPU:   Allwinner A12 (SUN5I)\n"); break;
  49         case 3: puts("CPU:   Allwinner A13 (SUN5I)\n"); break;
  50         case 7: puts("CPU:   Allwinner A10s (SUN5I)\n"); break;
  51         default: puts("CPU:   Allwinner A1X (SUN5I)\n");
  52         }
  53 #elif defined CONFIG_MACH_SUN6I
  54         switch (sunxi_get_ss_bonding_id()) {
  55         case SUNXI_SS_BOND_ID_A31:
  56                 puts("CPU:   Allwinner A31 (SUN6I)\n");
  57                 break;
  58         case SUNXI_SS_BOND_ID_A31S:
  59                 puts("CPU:   Allwinner A31s (SUN6I)\n");
  60                 break;
  61         default:
  62                 printf("CPU:   Allwinner A31? (SUN6I, id: %d)\n",
  63                        sunxi_get_ss_bonding_id());
  64         }
  65 #elif defined CONFIG_MACH_SUN7I
  66         puts("CPU:   Allwinner A20 (SUN7I)\n");
  67 #elif defined CONFIG_MACH_SUN8I_A23
  68         puts("CPU:   Allwinner A23 (SUN8I)\n");
  69 #else
  70 #warning Please update cpu_info.c with correct CPU information
  71         puts("CPU:   SUNXI Family\n");
  72 #endif
  73         return 0;
  74 }
  75 #endif
  76
  77 int sunxi_get_sid(unsigned int *sid)
  78 {
  79 #if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I_A23
  80 #ifdef CONFIG_AXP221_POWER
  81         return axp221_get_sid(sid);
  82 #else
  83         return -ENODEV;
  84 #endif
  85 #else
  86         int i;
  87
  88         for (i = 0; i< 4; i++)
  89                 sid[i] = readl(SUNXI_SID_BASE + 4 * i);
  90
  91         return 0;
  92 #endif
  93 }