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   1 /***************************************************************************
   2  *   Copyright (C) 2015 Oleksij Rempel                                     *
   3  *   linux@rempel-privat.de                                                *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  ***************************************************************************/
  15
  16 #ifndef ARM7A_CACHE_L2X_H
  17 #define ARM7A_CACHE_L2X_H
  18
  19 #define L2X0_CACHE_LINE_SIZE            32
  20
  21 /* source: linux/arch/arm/include/asm/hardware/cache-l2x0.h */
  22 #define L2X0_CACHE_ID                   0x000
  23 #define L2X0_CACHE_TYPE                 0x004
  24 #define L2X0_CTRL                       0x100
  25 #define L2X0_AUX_CTRL                   0x104
  26 #define L2X0_TAG_LATENCY_CTRL           0x108
  27 #define L2X0_DATA_LATENCY_CTRL          0x10C
  28 #define L2X0_EVENT_CNT_CTRL             0x200
  29 #define L2X0_EVENT_CNT1_CFG             0x204
  30 #define L2X0_EVENT_CNT0_CFG             0x208
  31 #define L2X0_EVENT_CNT1_VAL             0x20C
  32 #define L2X0_EVENT_CNT0_VAL             0x210
  33 #define L2X0_INTR_MASK                  0x214
  34 #define L2X0_MASKED_INTR_STAT           0x218
  35 #define L2X0_RAW_INTR_STAT              0x21C
  36 #define L2X0_INTR_CLEAR                 0x220
  37 #define L2X0_CACHE_SYNC                 0x730
  38 #define L2X0_DUMMY_REG                  0x740
  39 #define L2X0_INV_LINE_PA                0x770
  40 #define L2X0_INV_WAY                    0x77C
  41 #define L2X0_CLEAN_LINE_PA              0x7B0
  42 #define L2X0_CLEAN_LINE_IDX             0x7B8
  43 #define L2X0_CLEAN_WAY                  0x7BC
  44 #define L2X0_CLEAN_INV_LINE_PA          0x7F0
  45 #define L2X0_CLEAN_INV_LINE_IDX         0x7F8
  46 #define L2X0_CLEAN_INV_WAY              0x7FC
  47 /*
  48  * The lockdown registers repeat 8 times for L310, the L210 has only one
  49  * D and one I lockdown register at 0x0900 and 0x0904.
  50  */
  51 #define L2X0_LOCKDOWN_WAY_D_BASE        0x900
  52 #define L2X0_LOCKDOWN_WAY_I_BASE        0x904
  53 #define L2X0_LOCKDOWN_STRIDE            0x08
  54 #define L2X0_ADDR_FILTER_START          0xC00
  55 #define L2X0_ADDR_FILTER_END            0xC04
  56 #define L2X0_TEST_OPERATION             0xF00
  57 #define L2X0_LINE_DATA                  0xF10
  58 #define L2X0_LINE_TAG                   0xF30
  59 #define L2X0_DEBUG_CTRL                 0xF40
  60 #define L2X0_PREFETCH_CTRL              0xF60
  61 #define L2X0_POWER_CTRL                 0xF80
  62 #define   L2X0_DYNAMIC_CLK_GATING_EN    (1 << 1)
  63 #define   L2X0_STNDBY_MODE_EN           (1 << 0)
  64
  65 /* Registers shifts and masks */
  66 #define L2X0_CACHE_ID_PART_MASK         (0xf << 6)
  67 #define L2X0_CACHE_ID_PART_L210         (1 << 6)
  68 #define L2X0_CACHE_ID_PART_L310         (3 << 6)
  69 #define L2X0_CACHE_ID_RTL_MASK          0x3f
  70 #define L2X0_CACHE_ID_RTL_R0P0          0x0
  71 #define L2X0_CACHE_ID_RTL_R1P0          0x2
  72 #define L2X0_CACHE_ID_RTL_R2P0          0x4
  73 #define L2X0_CACHE_ID_RTL_R3P0          0x5
  74 #define L2X0_CACHE_ID_RTL_R3P1          0x6
  75 #define L2X0_CACHE_ID_RTL_R3P2          0x8
  76
  77 #define L2X0_AUX_CTRL_MASK                      0xc0000fff
  78 #define L2X0_AUX_CTRL_DATA_RD_LATENCY_SHIFT     0
  79 #define L2X0_AUX_CTRL_DATA_RD_LATENCY_MASK      0x7
  80 #define L2X0_AUX_CTRL_DATA_WR_LATENCY_SHIFT     3
  81 #define L2X0_AUX_CTRL_DATA_WR_LATENCY_MASK      (0x7 << 3)
  82 #define L2X0_AUX_CTRL_TAG_LATENCY_SHIFT         6
  83 #define L2X0_AUX_CTRL_TAG_LATENCY_MASK          (0x7 << 6)
  84 #define L2X0_AUX_CTRL_DIRTY_LATENCY_SHIFT       9
  85 #define L2X0_AUX_CTRL_DIRTY_LATENCY_MASK        (0x7 << 9)
  86 #define L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT       16
  87 #define L2X0_AUX_CTRL_WAY_SIZE_SHIFT            17
  88 #define L2X0_AUX_CTRL_WAY_SIZE_MASK             (0x7 << 17)
  89 #define L2X0_AUX_CTRL_SHARE_OVERRIDE_SHIFT      22
  90 #define L2X0_AUX_CTRL_NS_LOCKDOWN_SHIFT         26
  91 #define L2X0_AUX_CTRL_NS_INT_CTRL_SHIFT         27
  92 #define L2X0_AUX_CTRL_DATA_PREFETCH_SHIFT       28
  93 #define L2X0_AUX_CTRL_INSTR_PREFETCH_SHIFT      29
  94 #define L2X0_AUX_CTRL_EARLY_BRESP_SHIFT         30
  95
  96 #define L2X0_LATENCY_CTRL_SETUP_SHIFT   0
  97 #define L2X0_LATENCY_CTRL_RD_SHIFT      4
  98 #define L2X0_LATENCY_CTRL_WR_SHIFT      8
  99
 100 #define L2X0_ADDR_FILTER_EN             1
 101
 102 #define L2X0_CTRL_EN                    1
 103
 104 #define L2X0_WAY_SIZE_SHIFT             3
 105
 106 struct l2x0_regs {
 107         unsigned long phy_base;
 108         unsigned long aux_ctrl;
 109         /*
 110          * Whether the following registers need to be saved/restored
 111          * depends on platform
 112          */
 113         unsigned long tag_latency;
 114         unsigned long data_latency;
 115         unsigned long filter_start;
 116         unsigned long filter_end;
 117         unsigned long prefetch_ctrl;
 118         unsigned long pwr_ctrl;
 119         unsigned long ctrl;
 120         unsigned long aux2_ctrl;
 121 };
 122
 123 struct outer_cache_fns {
 124         void (*inv_range)(unsigned long, unsigned long);
 125         void (*clean_range)(unsigned long, unsigned long);
 126         void (*flush_range)(unsigned long, unsigned long);
 127         void (*flush_all)(void);
 128         void (*disable)(void);
 129
 130         void (*resume)(void);
 131
 132         /* This is an ARM L2C thing */
 133         void (*write_sec)(unsigned long, unsigned);
 134         void (*configure)(const struct l2x0_regs *);
 135 };
 136
 137 struct l2c_init_data {
 138         const char *type;
 139         unsigned way_size_0;
 140         unsigned num_lock;
 141
 142         void (*enable)(uint32_t, uint32_t, unsigned);
 143         void (*fixup)(uint32_t, uint32_t, struct outer_cache_fns *);
 144         void (*save)(uint32_t);
 145         void (*configure)(uint32_t);
 146         struct outer_cache_fns outer_cache;
 147 };
 148
 149 extern const struct command_registration arm7a_l2x_cache_command_handler[];
 150
 151 int armv7a_l2x_cache_flush_virt(struct target *target, uint32_t virt,
 152                                         uint32_t size);
 153 int arm7a_l2x_flush_all_data(struct target *target);
 154
 155 #endif