board/renesas/ap325rxa/lowlevel_init.S

   1 /*
   2  * Copyright (C) 2008 Renesas Solutions Corp.
   3  * Copyright (C) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
   4  *
   5  * board/ap325rxa/lowlevel_init.S
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <config.h>
  11 #include <asm/processor.h>
  12 #include <asm/macro.h>
  13
  14 /*
  15  * Board specific low level init code, called _very_ early in the
  16  * startup sequence. Relocation to SDRAM has not happened yet, no
  17  * stack is available, bss section has not been initialised, etc.
  18  *
  19  * (Note: As no stack is available, no subroutines can be called...).
  20  */
  21
  22         .global lowlevel_init
  23
  24         .text
  25         .align  2
  26
  27 lowlevel_init:
  28         write16 DRVCRA_A, DRVCRA_D
  29
  30         write16 DRVCRB_A, DRVCRB_D
  31
  32         write16 RWTCSR_A, RWTCSR_D1
  33
  34         write16 RWTCNT_A, RWTCNT_D
  35
  36         write16 RWTCSR_A, RWTCSR_D2
  37
  38         write32 FRQCR_A, FRQCR_D
  39
  40         write32 CMNCR_A, CMNCR_D
  41
  42         write32 CS0BCR_A, CS0BCR_D
  43
  44         write32 CS4BCR_A, CS4BCR_D
  45
  46         write32 CS5ABCR_A, CS5ABCR_D
  47
  48         write32 CS5BBCR_A, CS5BBCR_D
  49
  50         write32 CS6ABCR_A, CS6ABCR_D
  51
  52         write32 CS6BBCR_A, CS6BBCR_D
  53
  54         write32 CS0WCR_A, CS0WCR_D
  55
  56         write32 CS4WCR_A, CS4WCR_D
  57
  58         write32 CS5AWCR_A, CS5AWCR_D
  59
  60         write32 CS5BWCR_A, CS5BWCR_D
  61
  62         write32 CS6AWCR_A, CS6AWCR_D
  63
  64         write32 CS6BWCR_A, CS6BWCR_D
  65
  66         write32 SBSC_SDCR_A, SBSC_SDCR_D1
  67
  68         write32 SBSC_SDWCR_A, SBSC_SDWCR_D
  69
  70         write32 SBSC_SDPCR_A, SBSC_SDPCR_D
  71
  72         write32 SBSC_RTCSR_A, SBSC_RTCSR_D
  73
  74         write32 SBSC_RTCNT_A, SBSC_RTCNT_D
  75
  76         write32 SBSC_RTCOR_A, SBSC_RTCOR_D
  77
  78         write8  SBSC_SDMR3_A1, SBSC_SDMR3_D
  79
  80         write8  SBSC_SDMR3_A2, SBSC_SDMR3_D
  81
  82         mov.l   SLEEP_CNT, r1
  83 2:      tst     r1, r1
  84         nop
  85         bf/s    2b
  86         dt      r1
  87
  88         write8  SBSC_SDMR3_A3, SBSC_SDMR3_D
  89
  90         write32 SBSC_SDCR_A, SBSC_SDCR_D2
  91
  92         write32 CCR_A, CCR_D
  93
  94         ! BL bit off (init = ON) (?!?)
  95
  96         stc     sr, r0                          ! BL bit off(init=ON)
  97         mov.l   SR_MASK_D, r1
  98         and     r1, r0
  99         ldc     r0, sr
 100
 101         rts
 102          mov    #0, r0
 103
 104         .align  2
 105
 106 DRVCRA_A:       .long   DRVCRA
 107 DRVCRB_A:       .long   DRVCRB
 108 DRVCRA_D:       .word   0x4555
 109 DRVCRB_D:       .word   0x0005
 110
 111 RWTCSR_A:       .long   RWTCSR
 112 RWTCNT_A:       .long   RWTCNT
 113 FRQCR_A:        .long   FRQCR
 114 RWTCSR_D1:      .word   0xa507
 115 RWTCSR_D2:      .word   0xa504
 116 RWTCNT_D:       .word   0x5a00
 117 .align 2
 118 FRQCR_D:        .long   0x0b04474a
 119
 120 SBSC_SDCR_A:    .long   SBSC_SDCR
 121 SBSC_SDWCR_A:   .long   SBSC_SDWCR
 122 SBSC_SDPCR_A:   .long   SBSC_SDPCR
 123 SBSC_RTCSR_A:   .long   SBSC_RTCSR
 124 SBSC_RTCNT_A:   .long   SBSC_RTCNT
 125 SBSC_RTCOR_A:   .long   SBSC_RTCOR
 126 SBSC_SDMR3_A1:  .long   0xfe510000
 127 SBSC_SDMR3_A2:  .long   0xfe500242
 128 SBSC_SDMR3_A3:  .long   0xfe5c0042
 129
 130 SBSC_SDCR_D1:   .long   0x92810112
 131 SBSC_SDCR_D2:   .long   0x92810912
 132 SBSC_SDWCR_D:   .long   0x05162482
 133 SBSC_SDPCR_D:   .long   0x00300087
 134 SBSC_RTCSR_D:   .long   0xa55a0212
 135 SBSC_RTCNT_D:   .long   0xa55a0000
 136 SBSC_RTCOR_D:   .long   0xa55a0040
 137 SBSC_SDMR3_D:   .long   0x00
 138
 139 CMNCR_A:        .long   CMNCR
 140 CS0BCR_A:       .long   CS0BCR
 141 CS4BCR_A:       .long   CS4BCR
 142 CS5ABCR_A:      .long   CS5ABCR
 143 CS5BBCR_A:      .long   CS5BBCR
 144 CS6ABCR_A:      .long   CS6ABCR
 145 CS6BBCR_A:      .long   CS6BBCR
 146 CS0WCR_A:       .long   CS0WCR
 147 CS4WCR_A:       .long   CS4WCR
 148 CS5AWCR_A:      .long   CS5AWCR
 149 CS5BWCR_A:      .long   CS5BWCR
 150 CS6AWCR_A:      .long   CS6AWCR
 151 CS6BWCR_A:      .long   CS6BWCR
 152
 153 CMNCR_D:        .long   0x00000013
 154 CS0BCR_D:       .long   0x24920400
 155 CS4BCR_D:       .long   0x24920400
 156 CS5ABCR_D:      .long   0x24920400
 157 CS5BBCR_D:      .long   0x7fff0600
 158 CS6ABCR_D:      .long   0x24920400
 159 CS6BBCR_D:      .long   0x24920600
 160 CS0WCR_D:       .long   0x00000480
 161 CS4WCR_D:       .long   0x00000480
 162 CS5AWCR_D:      .long   0x00000380
 163 CS5BWCR_D:      .long   0x00000080
 164 CS6AWCR_D:      .long   0x00000300
 165 CS6BWCR_D:      .long   0x00000540
 166
 167 CCR_A:          .long   0xff00001c
 168 CCR_D:          .long   0x0000090d
 169
 170 SLEEP_CNT:      .long   0x00000800
 171 SR_MASK_D:      .long   0xEFFFFF0F