arch/powerpc/boot/dcr.h

   1 #ifndef _PPC_BOOT_DCR_H_
   2 #define _PPC_BOOT_DCR_H_
   3
   4 #define mfdcr(rn) \
   5         ({      \
   6                 unsigned long rval; \
   7                 asm volatile("mfdcr %0,%1" : "=r"(rval) : "i"(rn)); \
   8                 rval; \
   9         })
  10 #define mtdcr(rn, val) \
  11         asm volatile("mtdcr %0,%1" : : "i"(rn), "r"(val))
  12
  13 /* 440GP/440GX SDRAM controller DCRs */
  14 #define DCRN_SDRAM0_CFGADDR                             0x010
  15 #define DCRN_SDRAM0_CFGDATA                             0x011
  16
  17 #define         SDRAM0_B0CR                             0x40
  18 #define         SDRAM0_B1CR                             0x44
  19 #define         SDRAM0_B2CR                             0x48
  20 #define         SDRAM0_B3CR                             0x4c
  21
  22 static const unsigned long sdram_bxcr[] = { SDRAM0_B0CR, SDRAM0_B1CR, SDRAM0_B2CR, SDRAM0_B3CR };
  23
  24 #define                 SDRAM_CONFIG_BANK_ENABLE        0x00000001
  25 #define                 SDRAM_CONFIG_SIZE_MASK          0x000e0000
  26 #define                 SDRAM_CONFIG_BANK_SIZE(reg)     \
  27         (0x00400000 << ((reg & SDRAM_CONFIG_SIZE_MASK) >> 17))
  28
  29 /* 440GP External Bus Controller (EBC) */
  30 #define DCRN_EBC0_CFGADDR                               0x012
  31 #define DCRN_EBC0_CFGDATA                               0x013
  32 #define   EBC_NUM_BANKS                                   8
  33 #define   EBC_B0CR                                        0x00
  34 #define   EBC_B1CR                                        0x01
  35 #define   EBC_B2CR                                        0x02
  36 #define   EBC_B3CR                                        0x03
  37 #define   EBC_B4CR                                        0x04
  38 #define   EBC_B5CR                                        0x05
  39 #define   EBC_B6CR                                        0x06
  40 #define   EBC_B7CR                                        0x07
  41 #define   EBC_BXCR(n)                                     (n)
  42 #define     EBC_BXCR_BAS                                    0xfff00000
  43 #define     EBC_BXCR_BS                                     0x000e0000
  44 #define     EBC_BXCR_BANK_SIZE(reg) \
  45         (0x100000 << (((reg) & EBC_BXCR_BS) >> 17))
  46 #define     EBC_BXCR_BU                                     0x00018000
  47 #define       EBC_BXCR_BU_OFF                                 0x00000000
  48 #define       EBC_BXCR_BU_RO                                  0x00008000
  49 #define       EBC_BXCR_BU_WO                                  0x00010000
  50 #define       EBC_BXCR_BU_RW                                  0x00018000
  51 #define     EBC_BXCR_BW                                     0x00006000
  52 #define   EBC_B0AP                                        0x10
  53 #define   EBC_B1AP                                        0x11
  54 #define   EBC_B2AP                                        0x12
  55 #define   EBC_B3AP                                        0x13
  56 #define   EBC_B4AP                                        0x14
  57 #define   EBC_B5AP                                        0x15
  58 #define   EBC_B6AP                                        0x16
  59 #define   EBC_B7AP                                        0x17
  60 #define   EBC_BXAP(n)                                     (0x10+(n))
  61 #define   EBC_BEAR                                        0x20
  62 #define   EBC_BESR                                        0x21
  63 #define   EBC_CFG                                         0x23
  64 #define   EBC_CID                                         0x24
  65
  66 /* 440GP Clock, PM, chip control */
  67 #define DCRN_CPC0_SR                                    0x0b0
  68 #define DCRN_CPC0_ER                                    0x0b1
  69 #define DCRN_CPC0_FR                                    0x0b2
  70 #define DCRN_CPC0_SYS0                                  0x0e0
  71 #define   CPC0_SYS0_TUNE                                  0xffc00000
  72 #define   CPC0_SYS0_FBDV_MASK                             0x003c0000
  73 #define   CPC0_SYS0_FWDVA_MASK                            0x00038000
  74 #define   CPC0_SYS0_FWDVB_MASK                            0x00007000
  75 #define   CPC0_SYS0_OPDV_MASK                             0x00000c00
  76 #define   CPC0_SYS0_EPDV_MASK                             0x00000300
  77 /* Helper macros to compute the actual clock divider values from the
  78  * encodings in the CPC0 register */
  79 #define   CPC0_SYS0_FBDV(reg) \
  80                 ((((((reg) & CPC0_SYS0_FBDV_MASK) >> 18) - 1) & 0xf) + 1)
  81 #define   CPC0_SYS0_FWDVA(reg) \
  82                 (8 - (((reg) & CPC0_SYS0_FWDVA_MASK) >> 15))
  83 #define   CPC0_SYS0_FWDVB(reg) \
  84                 (8 - (((reg) & CPC0_SYS0_FWDVB_MASK) >> 12))
  85 #define   CPC0_SYS0_OPDV(reg) \
  86                 ((((reg) & CPC0_SYS0_OPDV_MASK) >> 10) + 1)
  87 #define   CPC0_SYS0_EPDV(reg) \
  88                 ((((reg) & CPC0_SYS0_EPDV_MASK) >> 8) + 1)
  89 #define   CPC0_SYS0_EXTSL                                 0x00000080
  90 #define   CPC0_SYS0_RW_MASK                               0x00000060
  91 #define   CPC0_SYS0_RL                                    0x00000010
  92 #define   CPC0_SYS0_ZMIISL_MASK                           0x0000000c
  93 #define   CPC0_SYS0_BYPASS                                0x00000002
  94 #define   CPC0_SYS0_NTO1                                  0x00000001
  95 #define DCRN_CPC0_SYS1                                  0x0e1
  96 #define DCRN_CPC0_CUST0                                 0x0e2
  97 #define DCRN_CPC0_CUST1                                 0x0e3
  98 #define DCRN_CPC0_STRP0                                 0x0e4
  99 #define DCRN_CPC0_STRP1                                 0x0e5
 100 #define DCRN_CPC0_STRP2                                 0x0e6
 101 #define DCRN_CPC0_STRP3                                 0x0e7
 102 #define DCRN_CPC0_GPIO                                  0x0e8
 103 #define DCRN_CPC0_PLB                                   0x0e9
 104 #define DCRN_CPC0_CR1                                   0x0ea
 105 #define DCRN_CPC0_CR0                                   0x0eb
 106 #define   CPC0_CR0_SWE                                    0x80000000
 107 #define   CPC0_CR0_CETE                                   0x40000000
 108 #define   CPC0_CR0_U1FCS                                  0x20000000
 109 #define   CPC0_CR0_U0DTE                                  0x10000000
 110 #define   CPC0_CR0_U0DRE                                  0x08000000
 111 #define   CPC0_CR0_U0DC                                   0x04000000
 112 #define   CPC0_CR0_U1DTE                                  0x02000000
 113 #define   CPC0_CR0_U1DRE                                  0x01000000
 114 #define   CPC0_CR0_U1DC                                   0x00800000
 115 #define   CPC0_CR0_U0EC                                   0x00400000
 116 #define   CPC0_CR0_U1EC                                   0x00200000
 117 #define   CPC0_CR0_UDIV_MASK                              0x001f0000
 118 #define   CPC0_CR0_UDIV(reg) \
 119                 ((((reg) & CPC0_CR0_UDIV_MASK) >> 16) + 1)
 120 #define DCRN_CPC0_MIRQ0                                 0x0ec
 121 #define DCRN_CPC0_MIRQ1                                 0x0ed
 122 #define DCRN_CPC0_JTAGID                                0x0ef
 123
 124 #endif  /* _PPC_BOOT_DCR_H_ */