board/renesas/r2dplus/lowlevel_init.S

   1 /*
   2  * modified from SH-IPL+g (init-r0p751rlc0011rl.S)
   3  * Initial Register Data for R0P751RLC0011RL (SH7751R 240MHz/120MHz/60MHz)
   4  * Coyright (c) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
   5 */
   6
   7 #include <config.h>
   8 #include <version.h>
   9
  10 #include <asm/processor.h>
  11 #include <asm/macro.h>
  12
  13         .global lowlevel_init
  14         .text
  15         .align  2
  16
  17 lowlevel_init:
  18
  19         write32 CCR_A, CCR_D_D
  20
  21         write32 MMUCR_A, MMUCR_D
  22
  23         write32 BCR1_A, BCR1_D
  24
  25         write16 BCR2_A, BCR2_D
  26
  27         write16 BCR3_A, BCR3_D
  28
  29         write32 BCR4_A, BCR4_D
  30
  31         write32 WCR1_A, WCR1_D
  32
  33         write32 WCR2_A, WCR2_D
  34
  35         write32 WCR3_A, WCR3_D
  36
  37         write16 PCR_A, PCR_D
  38
  39         write16 LED_A, LED_D
  40
  41         write32 MCR_A, MCR_D1
  42
  43         write16 RTCNT_A, RTCNT_D
  44
  45         write16 RTCOR_A, RTCOR_D
  46
  47         write16 RFCR_A, RFCR_D
  48
  49         write16 RTCSR_A, RTCSR_D
  50
  51         write8  SDMR3_A, SDMR3_D0
  52
  53         /* Wait DRAM refresh 30 times */
  54         mov.l   RFCR_A, r1
  55         mov     #30, r3
  56 1:
  57         mov.w   @r1, r0
  58         extu.w  r0, r2
  59         cmp/hi  r3, r2
  60         bf      1b
  61
  62         write32 MCR_A, MCR_D2
  63
  64         write8  SDMR3_A, SDMR3_D1
  65
  66         write32 IRLMASK_A, IRLMASK_D
  67
  68         write32 CCR_A, CCR_D_E
  69
  70         rts
  71         nop
  72
  73         .align  2
  74 CCR_A:          .long   CCR             /* Cache Control Register */
  75 CCR_D_D:        .long   0x0808          /* Flush the cache, disable */
  76 CCR_D_E:        .long   0x8000090B
  77
  78 FRQCR_A:        .long   FRQCR           /* FRQCR Address */
  79 FRQCR_D:        .long   0x00000e0a      /* 03/07/15 modify */
  80 BCR1_A:         .long   BCR1            /* BCR1 Address */
  81 BCR1_D:         .long   0x00180008
  82 BCR2_A:         .long   BCR2            /* BCR2 Address */
  83 BCR2_D:         .long   0xabe8
  84 BCR3_A:         .long   BCR3            /* BCR3 Address */
  85 BCR3_D:         .long   0x0000
  86 BCR4_A:         .long   BCR4            /* BCR4 Address */
  87 BCR4_D:         .long   0x00000010
  88 WCR1_A:         .long   WCR1            /* WCR1 Address */
  89 WCR1_D:         .long   0x33343333
  90 WCR2_A:         .long   WCR2            /* WCR2 Address */
  91 WCR2_D:         .long   0xcff86fbf
  92 WCR3_A:         .long   WCR3            /* WCR3 Address */
  93 WCR3_D:         .long   0x07777707
  94 LED_A:          .long   0x04000036      /* LED Address */
  95 LED_D:          .long   0xFF            /* LED Data */
  96 RTCNT_A:        .long   RTCNT           /* RTCNT Address */
  97 RTCNT_D:        .word   0xA500          /* RTCNT Write Code A5h Data 00h */
  98 .align 2
  99 RTCOR_A:        .long   RTCOR           /* RTCOR Address */
 100 RTCOR_D:        .word   0xA534          /* RTCOR Write Code */
 101 .align 2
 102 RTCSR_A:        .long   RTCSR           /* RTCSR Address */
 103 RTCSR_D:        .word   0xA510          /* RTCSR Write Code */
 104 .align 2
 105 SDMR3_A:        .long   0xFF9400CC      /* SDMR3 Address */
 106 SDMR3_D0:       .long   0x55
 107 SDMR3_D1:       .long   0x00
 108 MCR_A:          .long   MCR             /* MCR Address */
 109 MCR_D1:         .long   0x081901F4      /* MRSET:'0' */
 110 MCR_D2:         .long   0x481901F4      /* MRSET:'1' */
 111 RFCR_A:         .long   RFCR            /* RFCR Address */
 112 RFCR_D:         .long   0xA400          /* RFCR Write Code A4h Data 00h */
 113 PCR_A:          .long   PCR             /* PCR Address */
 114 PCR_D:          .long   0x0000
 115 MMUCR_A:        .long   MMUCR           /* MMUCCR Address */
 116 MMUCR_D:        .long   0x00000000      /* MMUCCR Data */
 117 IRLMASK_A:      .long   0xA4000000      /* IRLMASK Address */
 118 IRLMASK_D:      .long   0x00000000      /* IRLMASK Data */