arch/powerpc/boot/dcr.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _PPC_BOOT_DCR_H_
   3 #define _PPC_BOOT_DCR_H_
   4
   5 #define mfdcr(rn) \
   6         ({      \
   7                 unsigned long rval; \
   8                 asm volatile("mfdcr %0,%1" : "=r"(rval) : "i"(rn)); \
   9                 rval; \
  10         })
  11 #define mtdcr(rn, val) \
  12         asm volatile("mtdcr %0,%1" : : "i"(rn), "r"(val))
  13 #define mfdcrx(rn) \
  14         ({      \
  15                 unsigned long rval; \
  16                 asm volatile("mfdcrx %0,%1" : "=r"(rval) : "r"(rn)); \
  17                 rval; \
  18         })
  19 #define mtdcrx(rn, val) \
  20         ({      \
  21                 asm volatile("mtdcrx %0,%1" : : "r"(rn), "r" (val)); \
  22         })
  23
  24 /* 440GP/440GX SDRAM controller DCRs */
  25 #define DCRN_SDRAM0_CFGADDR                             0x010
  26 #define DCRN_SDRAM0_CFGDATA                             0x011
  27
  28 #define SDRAM0_READ(offset) ({\
  29         mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
  30         mfdcr(DCRN_SDRAM0_CFGDATA); })
  31 #define SDRAM0_WRITE(offset, data) ({\
  32         mtdcr(DCRN_SDRAM0_CFGADDR, offset); \
  33         mtdcr(DCRN_SDRAM0_CFGDATA, data); })
  34
  35 #define         SDRAM0_B0CR                             0x40
  36 #define         SDRAM0_B1CR                             0x44
  37 #define         SDRAM0_B2CR                             0x48
  38 #define         SDRAM0_B3CR                             0x4c
  39
  40 static const unsigned long sdram_bxcr[] = { SDRAM0_B0CR, SDRAM0_B1CR,
  41                                             SDRAM0_B2CR, SDRAM0_B3CR };
  42
  43 #define                 SDRAM_CONFIG_BANK_ENABLE        0x00000001
  44 #define                 SDRAM_CONFIG_SIZE_MASK          0x000e0000
  45 #define                 SDRAM_CONFIG_BANK_SIZE(reg)     \
  46         (0x00400000 << ((reg & SDRAM_CONFIG_SIZE_MASK) >> 17))
  47
  48 /* 440GP External Bus Controller (EBC) */
  49 #define DCRN_EBC0_CFGADDR                               0x012
  50 #define DCRN_EBC0_CFGDATA                               0x013
  51 #define   EBC_NUM_BANKS                                   8
  52 #define   EBC_B0CR                                        0x00
  53 #define   EBC_B1CR                                        0x01
  54 #define   EBC_B2CR                                        0x02
  55 #define   EBC_B3CR                                        0x03
  56 #define   EBC_B4CR                                        0x04
  57 #define   EBC_B5CR                                        0x05
  58 #define   EBC_B6CR                                        0x06
  59 #define   EBC_B7CR                                        0x07
  60 #define   EBC_BXCR(n)                                     (n)
  61 #define     EBC_BXCR_BAS                                    0xfff00000
  62 #define     EBC_BXCR_BS                                     0x000e0000
  63 #define     EBC_BXCR_BANK_SIZE(reg) \
  64         (0x100000 << (((reg) & EBC_BXCR_BS) >> 17))
  65 #define     EBC_BXCR_BU                                     0x00018000
  66 #define       EBC_BXCR_BU_OFF                                 0x00000000
  67 #define       EBC_BXCR_BU_RO                                  0x00008000
  68 #define       EBC_BXCR_BU_WO                                  0x00010000
  69 #define       EBC_BXCR_BU_RW                                  0x00018000
  70 #define     EBC_BXCR_BW                                     0x00006000
  71 #define   EBC_B0AP                                        0x10
  72 #define   EBC_B1AP                                        0x11
  73 #define   EBC_B2AP                                        0x12
  74 #define   EBC_B3AP                                        0x13
  75 #define   EBC_B4AP                                        0x14
  76 #define   EBC_B5AP                                        0x15
  77 #define   EBC_B6AP                                        0x16
  78 #define   EBC_B7AP                                        0x17
  79 #define   EBC_BXAP(n)                                     (0x10+(n))
  80 #define   EBC_BEAR                                        0x20
  81 #define   EBC_BESR                                        0x21
  82 #define   EBC_CFG                                         0x23
  83 #define   EBC_CID                                         0x24
  84
  85 /* 440GP Clock, PM, chip control */
  86 #define DCRN_CPC0_SR                                    0x0b0
  87 #define DCRN_CPC0_ER                                    0x0b1
  88 #define DCRN_CPC0_FR                                    0x0b2
  89 #define DCRN_CPC0_SYS0                                  0x0e0
  90 #define   CPC0_SYS0_TUNE                                  0xffc00000
  91 #define   CPC0_SYS0_FBDV_MASK                             0x003c0000
  92 #define   CPC0_SYS0_FWDVA_MASK                            0x00038000
  93 #define   CPC0_SYS0_FWDVB_MASK                            0x00007000
  94 #define   CPC0_SYS0_OPDV_MASK                             0x00000c00
  95 #define   CPC0_SYS0_EPDV_MASK                             0x00000300
  96 /* Helper macros to compute the actual clock divider values from the
  97  * encodings in the CPC0 register */
  98 #define   CPC0_SYS0_FBDV(reg) \
  99                 ((((((reg) & CPC0_SYS0_FBDV_MASK) >> 18) - 1) & 0xf) + 1)
 100 #define   CPC0_SYS0_FWDVA(reg) \
 101                 (8 - (((reg) & CPC0_SYS0_FWDVA_MASK) >> 15))
 102 #define   CPC0_SYS0_FWDVB(reg) \
 103                 (8 - (((reg) & CPC0_SYS0_FWDVB_MASK) >> 12))
 104 #define   CPC0_SYS0_OPDV(reg) \
 105                 ((((reg) & CPC0_SYS0_OPDV_MASK) >> 10) + 1)
 106 #define   CPC0_SYS0_EPDV(reg) \
 107                 ((((reg) & CPC0_SYS0_EPDV_MASK) >> 8) + 1)
 108 #define   CPC0_SYS0_EXTSL                                 0x00000080
 109 #define   CPC0_SYS0_RW_MASK                               0x00000060
 110 #define   CPC0_SYS0_RL                                    0x00000010
 111 #define   CPC0_SYS0_ZMIISL_MASK                           0x0000000c
 112 #define   CPC0_SYS0_BYPASS                                0x00000002
 113 #define   CPC0_SYS0_NTO1                                  0x00000001
 114 #define DCRN_CPC0_SYS1                                  0x0e1
 115 #define DCRN_CPC0_CUST0                                 0x0e2
 116 #define DCRN_CPC0_CUST1                                 0x0e3
 117 #define DCRN_CPC0_STRP0                                 0x0e4
 118 #define DCRN_CPC0_STRP1                                 0x0e5
 119 #define DCRN_CPC0_STRP2                                 0x0e6
 120 #define DCRN_CPC0_STRP3                                 0x0e7
 121 #define DCRN_CPC0_GPIO                                  0x0e8
 122 #define DCRN_CPC0_PLB                                   0x0e9
 123 #define DCRN_CPC0_CR1                                   0x0ea
 124 #define DCRN_CPC0_CR0                                   0x0eb
 125 #define   CPC0_CR0_SWE                                    0x80000000
 126 #define   CPC0_CR0_CETE                                   0x40000000
 127 #define   CPC0_CR0_U1FCS                                  0x20000000
 128 #define   CPC0_CR0_U0DTE                                  0x10000000
 129 #define   CPC0_CR0_U0DRE                                  0x08000000
 130 #define   CPC0_CR0_U0DC                                   0x04000000
 131 #define   CPC0_CR0_U1DTE                                  0x02000000
 132 #define   CPC0_CR0_U1DRE                                  0x01000000
 133 #define   CPC0_CR0_U1DC                                   0x00800000
 134 #define   CPC0_CR0_U0EC                                   0x00400000
 135 #define   CPC0_CR0_U1EC                                   0x00200000
 136 #define   CPC0_CR0_UDIV_MASK                              0x001f0000
 137 #define   CPC0_CR0_UDIV(reg) \
 138                 ((((reg) & CPC0_CR0_UDIV_MASK) >> 16) + 1)
 139 #define DCRN_CPC0_MIRQ0                                 0x0ec
 140 #define DCRN_CPC0_MIRQ1                                 0x0ed
 141 #define DCRN_CPC0_JTAGID                                0x0ef
 142
 143 #define DCRN_MAL0_CFG                                   0x180
 144 #define MAL_RESET 0x80000000
 145
 146 /* 440EP Clock/Power-on Reset regs */
 147 #define DCRN_CPR0_ADDR  0xc
 148 #define DCRN_CPR0_DATA  0xd
 149 #define CPR0_PLLD0      0x60
 150 #define CPR0_OPBD0      0xc0
 151 #define CPR0_PERD0      0xe0
 152 #define CPR0_PRIMBD0    0xa0
 153 #define CPR0_SCPID      0x120
 154 #define CPR0_PLLC0      0x40
 155
 156 /* 405GP Clocking/Power Management/Chip Control regs */
 157 #define DCRN_CPC0_PLLMR 0xb0
 158 #define DCRN_405_CPC0_CR0 0xb1
 159 #define DCRN_405_CPC0_CR1 0xb2
 160 #define DCRN_405_CPC0_PSR 0xb4
 161
 162 /* 405EP Clocking/Power Management/Chip Control regs */
 163 #define DCRN_CPC0_PLLMR0  0xf0
 164 #define DCRN_CPC0_PLLMR1  0xf4
 165 #define DCRN_CPC0_UCR     0xf5
 166
 167 /* 440GX/405EX Clock Control reg */
 168 #define DCRN_CPR0_CLKUPD                                0x020
 169 #define DCRN_CPR0_PLLC                                  0x040
 170 #define DCRN_CPR0_PLLD                                  0x060
 171 #define DCRN_CPR0_PRIMAD                                0x080
 172 #define DCRN_CPR0_PRIMBD                                0x0a0
 173 #define DCRN_CPR0_OPBD                                  0x0c0
 174 #define DCRN_CPR0_PERD                                  0x0e0
 175 #define DCRN_CPR0_MALD                                  0x100
 176
 177 #define DCRN_SDR0_CONFIG_ADDR   0xe
 178 #define DCRN_SDR0_CONFIG_DATA   0xf
 179
 180 /* SDR read/write helper macros */
 181 #define SDR0_READ(offset) ({\
 182         mtdcr(DCRN_SDR0_CONFIG_ADDR, offset); \
 183         mfdcr(DCRN_SDR0_CONFIG_DATA); })
 184 #define SDR0_WRITE(offset, data) ({\
 185         mtdcr(DCRN_SDR0_CONFIG_ADDR, offset); \
 186         mtdcr(DCRN_SDR0_CONFIG_DATA, data); })
 187
 188 #define DCRN_SDR0_UART0         0x0120
 189 #define DCRN_SDR0_UART1         0x0121
 190 #define DCRN_SDR0_UART2         0x0122
 191 #define DCRN_SDR0_UART3         0x0123
 192
 193
 194 /* CPRs read/write helper macros - based off include/asm-ppc/ibm44x.h */
 195
 196 #define DCRN_CPR0_CFGADDR                               0xc
 197 #define DCRN_CPR0_CFGDATA                               0xd
 198
 199 #define CPR0_READ(offset) ({\
 200         mtdcr(DCRN_CPR0_CFGADDR, offset); \
 201         mfdcr(DCRN_CPR0_CFGDATA); })
 202 #define CPR0_WRITE(offset, data) ({\
 203         mtdcr(DCRN_CPR0_CFGADDR, offset); \
 204         mtdcr(DCRN_CPR0_CFGDATA, data); })
 205
 206
 207
 208 #endif  /* _PPC_BOOT_DCR_H_ */