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