drivers/fsi/cf-fsi-fw.h

   1 // SPDX-License-Identifier: GPL-2.0+
   2 #ifndef __CF_FSI_FW_H
   3 #define __CF_FSI_FW_H
   4
   5 /*
   6  * uCode file layout
   7  *
   8  * 0000...03ff : m68k exception vectors
   9  * 0400...04ff : Header info & boot config block
  10  * 0500....... : Code & stack
  11  */
  12
  13 /*
  14  * Header info & boot config area
  15  *
  16  * The Header info is built into the ucode and provide version and
  17  * platform information.
  18  *
  19  * the Boot config needs to be adjusted by the ARM prior to starting
  20  * the ucode if the Command/Status area isn't at 0x320000 in CF space
  21  * (ie. beginning of SRAM).
  22  */
  23
  24 #define HDR_OFFSET              0x400
  25
  26 /* Info: Signature & version */
  27 #define HDR_SYS_SIG             0x00    /* 2 bytes system signature */
  28 #define  SYS_SIG_SHARED         0x5348
  29 #define  SYS_SIG_SPLIT          0x5350
  30 #define HDR_FW_VERS             0x02    /* 2 bytes Major.Minor */
  31 #define HDR_API_VERS            0x04    /* 2 bytes Major.Minor */
  32 #define  API_VERSION_MAJ        2       /* Current version */
  33 #define  API_VERSION_MIN        1
  34 #define HDR_FW_OPTIONS          0x08    /* 4 bytes option flags */
  35 #define  FW_OPTION_TRACE_EN     0x00000001      /* FW tracing enabled */
  36 #define  FW_OPTION_CONT_CLOCK   0x00000002      /* Continuous clocking supported */
  37 #define HDR_FW_SIZE             0x10    /* 4 bytes size for combo image */
  38
  39 /* Boot Config: Address of Command/Status area */
  40 #define HDR_CMD_STAT_AREA       0x80    /* 4 bytes CF address */
  41 #define HDR_FW_CONTROL          0x84    /* 4 bytes control flags */
  42 #define  FW_CONTROL_CONT_CLOCK  0x00000002      /* Continuous clocking enabled */
  43 #define  FW_CONTROL_DUMMY_RD    0x00000004      /* Extra dummy read (AST2400) */
  44 #define  FW_CONTROL_USE_STOP    0x00000008      /* Use STOP instructions */
  45 #define HDR_CLOCK_GPIO_VADDR    0x90    /* 2 bytes offset from GPIO base */
  46 #define HDR_CLOCK_GPIO_DADDR    0x92    /* 2 bytes offset from GPIO base */
  47 #define HDR_DATA_GPIO_VADDR     0x94    /* 2 bytes offset from GPIO base */
  48 #define HDR_DATA_GPIO_DADDR     0x96    /* 2 bytes offset from GPIO base */
  49 #define HDR_TRANS_GPIO_VADDR    0x98    /* 2 bytes offset from GPIO base */
  50 #define HDR_TRANS_GPIO_DADDR    0x9a    /* 2 bytes offset from GPIO base */
  51 #define HDR_CLOCK_GPIO_BIT      0x9c    /* 1 byte bit number */
  52 #define HDR_DATA_GPIO_BIT       0x9d    /* 1 byte bit number */
  53 #define HDR_TRANS_GPIO_BIT      0x9e    /* 1 byte bit number */
  54
  55 /*
  56  *  Command/Status area layout: Main part
  57  */
  58
  59 /* Command/Status register:
  60  *
  61  * +---------------------------+
  62  * | STAT | RLEN | CLEN | CMD  |
  63  * |   8  |   8  |   8  |   8  |
  64  * +---------------------------+
  65  *    |       |      |      |
  66  *    status  |      |      |
  67  * Response len      |      |
  68  * (in bits)         |      |
  69  *                   |      |
  70  *         Command len      |
  71  *         (in bits)        |
  72  *                          |
  73  *               Command code
  74  *
  75  * Due to the big endian layout, that means that a byte read will
  76  * return the status byte
  77  */
  78 #define CMD_STAT_REG            0x00
  79 #define  CMD_REG_CMD_MASK       0x000000ff
  80 #define  CMD_REG_CMD_SHIFT      0
  81 #define   CMD_NONE              0x00
  82 #define   CMD_COMMAND           0x01
  83 #define   CMD_BREAK             0x02
  84 #define   CMD_IDLE_CLOCKS       0x03 /* clen = #clocks */
  85 #define   CMD_INVALID           0xff
  86 #define  CMD_REG_CLEN_MASK      0x0000ff00
  87 #define  CMD_REG_CLEN_SHIFT     8
  88 #define  CMD_REG_RLEN_MASK      0x00ff0000
  89 #define  CMD_REG_RLEN_SHIFT     16
  90 #define  CMD_REG_STAT_MASK      0xff000000
  91 #define  CMD_REG_STAT_SHIFT     24
  92 #define   STAT_WORKING          0x00
  93 #define   STAT_COMPLETE         0x01
  94 #define   STAT_ERR_INVAL_CMD    0x80
  95 #define   STAT_ERR_INVAL_IRQ    0x81
  96 #define   STAT_ERR_MTOE         0x82
  97
  98 /* Response tag & CRC */
  99 #define STAT_RTAG               0x04
 100
 101 /* Response CRC */
 102 #define STAT_RCRC               0x05
 103
 104 /* Echo and Send delay */
 105 #define ECHO_DLY_REG            0x08
 106 #define SEND_DLY_REG            0x09
 107
 108 /* Command data area
 109  *
 110  * Last byte of message must be left aligned
 111  */
 112 #define CMD_DATA                0x10 /* 64 bit of data */
 113
 114 /* Response data area, right aligned, unused top bits are 1 */
 115 #define RSP_DATA                0x20 /* 32 bit of data */
 116
 117 /* Misc */
 118 #define INT_CNT                 0x30 /* 32-bit interrupt count */
 119 #define BAD_INT_VEC             0x34 /* 32-bit bad interrupt vector # */
 120 #define CF_STARTED              0x38 /* byte, set to -1 when copro started */
 121 #define CLK_CNT                 0x3c /* 32-bit, clock count (debug only) */
 122
 123 /*
 124  *  SRAM layout: GPIO arbitration part
 125  */
 126 #define ARB_REG                 0x40
 127 #define  ARB_ARM_REQ            0x01
 128 #define  ARB_ARM_ACK            0x02
 129
 130 /* Misc2 */
 131 #define CF_RESET_D0             0x50
 132 #define CF_RESET_D1             0x54
 133 #define BAD_INT_S0              0x58
 134 #define BAD_INT_S1              0x5c
 135 #define STOP_CNT                0x60
 136
 137 /* Internal */
 138
 139 /*
 140  * SRAM layout: Trace buffer (debug builds only)
 141  */
 142 #define TRACEBUF                0x100
 143 #define   TR_CLKOBIT0           0xc0
 144 #define   TR_CLKOBIT1           0xc1
 145 #define   TR_CLKOSTART          0x82
 146 #define   TR_OLEN               0x83 /* + len */
 147 #define   TR_CLKZ               0x84 /* + count */
 148 #define   TR_CLKWSTART          0x85
 149 #define   TR_CLKTAG             0x86 /* + tag */
 150 #define   TR_CLKDATA            0x87 /* + len */
 151 #define   TR_CLKCRC             0x88 /* + raw crc */
 152 #define   TR_CLKIBIT0           0x90
 153 #define   TR_CLKIBIT1           0x91
 154 #define   TR_END                0xff
 155
 156 #endif /* __CF_FSI_FW_H */
 157