board/renesas/ap325rxa/lowlevel_init.S

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