include/microwatt_soc.h

   1 #ifndef __MICROWATT_SOC_H
   2 #define __MICROWATT_SOC_H
   3
   4 /*
   5  * Microwatt SoC memory map
   6  */
   7
   8 #define MEMORY_BASE     0x00000000  /* "Main" memory alias, either BRAM or DRAM */
   9 #define DRAM_BASE       0x40000000  /* DRAM if present */
  10 #define BRAM_BASE       0x80000000  /* Internal BRAM */
  11
  12 #define SYSCON_BASE     0xc0000000  /* System control regs */
  13 #define UART_BASE       0xc0002000  /* UART */
  14 #define XICS_ICP_BASE   0xc0004000  /* Interrupt controller */
  15 #define XICS_ICS_BASE   0xc0005000  /* Interrupt controller */
  16 #define SPI_FCTRL_BASE  0xc0006000  /* SPI flash controller registers */
  17 #define DRAM_CTRL_BASE  0xc8000000  /* LiteDRAM control registers */
  18 #define LETH_CSR_BASE   0xc8020000  /* LiteEth CSR registers */
  19 #define LETH_SRAM_BASE  0xc8030000  /* LiteEth MMIO space */
  20 #define SPI_FLASH_BASE  0xf0000000  /* SPI Flash memory map */
  21 #define DRAM_INIT_BASE  0xff000000  /* Internal DRAM init firmware */
  22
  23 /*
  24  * Interrupt numbers
  25  */
  26 #define IRQ_UART0       0
  27 #define IRQ_ETHERNET    1
  28
  29 /*
  30  * Register definitions for the syscon registers
  31  */
  32
  33 #define SYS_REG_SIGNATURE               0x00
  34 #define SYS_REG_INFO                    0x08
  35 #define   SYS_REG_INFO_HAS_UART                 (1ull << 0)
  36 #define   SYS_REG_INFO_HAS_DRAM                 (1ull << 1)
  37 #define   SYS_REG_INFO_HAS_BRAM                 (1ull << 2)
  38 #define   SYS_REG_INFO_HAS_SPI_FLASH            (1ull << 3)
  39 #define   SYS_REG_INFO_HAS_LITEETH              (1ull << 4)
  40 #define   SYS_REG_INFO_HAS_LARGE_SYSCON         (1ull << 5)
  41 #define   SYS_REG_INFO_HAS_UART1                (1ull << 6)
  42 #define SYS_REG_BRAMINFO                0x10
  43 #define   SYS_REG_BRAMINFO_SIZE_MASK            0xfffffffffffffull
  44 #define SYS_REG_DRAMINFO                0x18
  45 #define   SYS_REG_DRAMINFO_SIZE_MASK            0xfffffffffffffull
  46 #define SYS_REG_CLKINFO                 0x20
  47 #define   SYS_REG_CLKINFO_FREQ_MASK             0xffffffffffull
  48 #define SYS_REG_CTRL                    0x28
  49 #define   SYS_REG_CTRL_DRAM_AT_0                (1ull << 0)
  50 #define   SYS_REG_CTRL_CORE_RESET               (1ull << 1)
  51 #define   SYS_REG_CTRL_SOC_RESET                (1ull << 2)
  52 #define SYS_REG_DRAMINITINFO            0x30
  53 #define SYS_REG_SPI_INFO                0x38
  54 #define   SYS_REG_SPI_INFO_FLASH_OFF_MASK       0xffffffff
  55 #define SYS_REG_UART0_INFO              0x40
  56 #define SYS_REG_UART1_INFO              0x48
  57 #define   SYS_REG_UART_IS_16550                 (1ull << 32)
  58
  59
  60 /*
  61  * Register definitions for the potato UART
  62  */
  63 #define POTATO_CONSOLE_TX               0x00
  64 #define POTATO_CONSOLE_RX               0x08
  65 #define POTATO_CONSOLE_STATUS           0x10
  66 #define   POTATO_CONSOLE_STATUS_RX_EMPTY                0x01
  67 #define   POTATO_CONSOLE_STATUS_TX_EMPTY                0x02
  68 #define   POTATO_CONSOLE_STATUS_RX_FULL                 0x04
  69 #define   POTATO_CONSOLE_STATUS_TX_FULL                 0x08
  70 #define POTATO_CONSOLE_CLOCK_DIV        0x18
  71 #define POTATO_CONSOLE_IRQ_EN           0x20
  72 #define   POTATO_CONSOLE_IRQ_RX                         0x01
  73 #define   POTATO_CONSOLE_IRQ_TX                         0x02
  74
  75 /*
  76  * Register definitionss for our standard (16550 style) UART
  77  */
  78 #define UART_REG_RX       0x00
  79 #define UART_REG_TX       0x00
  80 #define UART_REG_DLL      0x00
  81 #define UART_REG_IER      0x04
  82 #define UART_REG_DLM      0x04
  83 #define UART_REG_IIR      0x08
  84 #define UART_REG_FCR      0x08
  85 #define   UART_REG_FCR_EN_FIFO  0x01
  86 #define   UART_REG_FCR_CLR_RCVR 0x02
  87 #define   UART_REG_FCR_CLR_XMIT 0x04
  88 #define   UART_REG_FCR_TRIG1    0x00
  89 #define   UART_REG_FCR_TRIG4    0x40
  90 #define   UART_REG_FCR_TRIG8    0x80
  91 #define   UART_REG_FCR_TRIG14   0xc0
  92 #define UART_REG_LCR      0x0c
  93 #define   UART_REG_LCR_5BIT     0x00
  94 #define   UART_REG_LCR_6BIT     0x01
  95 #define   UART_REG_LCR_7BIT     0x02
  96 #define   UART_REG_LCR_8BIT     0x03
  97 #define   UART_REG_LCR_STOP     0x04
  98 #define   UART_REG_LCR_PAR      0x08
  99 #define   UART_REG_LCR_EVEN_PAR 0x10
 100 #define   UART_REG_LCR_STIC_PAR 0x20
 101 #define   UART_REG_LCR_BREAK    0x40
 102 #define   UART_REG_LCR_DLAB     0x80
 103 #define UART_REG_MCR      0x10
 104 #define   UART_REG_MCR_DTR      0x01
 105 #define   UART_REG_MCR_RTS      0x02
 106 #define   UART_REG_MCR_OUT1     0x04
 107 #define   UART_REG_MCR_OUT2     0x08
 108 #define   UART_REG_MCR_LOOP     0x10
 109 #define UART_REG_LSR      0x14
 110 #define   UART_REG_LSR_DR       0x01
 111 #define   UART_REG_LSR_OE       0x02
 112 #define   UART_REG_LSR_PE       0x04
 113 #define   UART_REG_LSR_FE       0x08
 114 #define   UART_REG_LSR_BI       0x10
 115 #define   UART_REG_LSR_THRE     0x20
 116 #define   UART_REG_LSR_TEMT     0x40
 117 #define   UART_REG_LSR_FIFOE    0x80
 118 #define UART_REG_MSR      0x18
 119 #define UART_REG_SCR      0x1c
 120
 121
 122 /*
 123  * Register definitions for the SPI controller
 124  */
 125 #define SPI_REG_DATA                    0x00 /* Byte access: single wire transfer */
 126 #define SPI_REG_DATA_DUAL               0x01 /* Byte access: dual wire transfer */
 127 #define SPI_REG_DATA_QUAD               0x02 /* Byte access: quad wire transfer */
 128 #define SPI_REG_CTRL                    0x04 /* Reset and manual mode control */
 129 #define   SPI_REG_CTRL_RESET                    0x01  /* reset all registers */
 130 #define   SPI_REG_CTRL_MANUAL_CS                0x02  /* assert CS, enable manual mode */
 131 #define   SPI_REG_CTRL_CKDIV_SHIFT              8     /* clock div */
 132 #define   SPI_REG_CTRL_CKDIV_MASK               (0xff << SPI_REG_CTRL_CKDIV_SHIFT)
 133 #define SPI_REG_AUTO_CFG                0x08 /* Automatic map configuration */
 134 #define   SPI_REG_AUTO_CFG_CMD_SHIFT            0     /* Command to use for reads */
 135 #define   SPI_REG_AUTO_CFG_CMD_MASK             (0xff << SPI_REG_AUTO_CFG_CMD_SHIFT)
 136 #define   SPI_REG_AUTO_CFG_DUMMIES_SHIFT        8     /* # dummy cycles */
 137 #define   SPI_REG_AUTO_CFG_DUMMIES_MASK         (0x7  << SPI_REG_AUTO_CFG_DUMMIES_SHIFT)
 138 #define   SPI_REG_AUTO_CFG_MODE_SHIFT           11    /* SPI wire mode */
 139 #define   SPI_REG_AUTO_CFG_MODE_MASK            (0x3  << SPI_REG_AUTO_CFG_MODE_SHIFT)
 140 #define     SPI_REG_AUT_CFG_MODE_SINGLE         (0 << 11)
 141 #define     SPI_REG_AUT_CFG_MODE_DUAL           (2 << 11)
 142 #define     SPI_REG_AUT_CFG_MODE_QUAD           (3 << 11)
 143 #define   SPI_REG_AUTO_CFG_ADDR4                (1u << 13) /* 3 or 4 addr bytes */
 144 #define   SPI_REG_AUTO_CFG_CKDIV_SHIFT          16    /* clock div */
 145 #define   SPI_REG_AUTO_CFG_CKDIV_MASK           (0xff << SPI_REG_AUTO_CFG_CKDIV_SHIFT)
 146 #define   SPI_REG_AUTO_CFG_CSTOUT_SHIFT         24    /* CS timeout */
 147 #define   SPI_REG_AUTO_CFG_CSTOUT_MASK          (0x3f << SPI_REG_AUTO_CFG_CSTOUT_SHIFT)
 148
 149
 150 #endif /* __MICROWATT_SOC_H */