board/renesas/rsk7269/lowlevel_init.S

   1 /*
   2  * Copyright (C) 2012 Renesas Electronics Europe Ltd.
   3  * Copyright (C) 2012 Phil Edworthy
   4  * Copyright (C) 2008 Renesas Solutions Corp.
   5  * Copyright (C) 2008 Nobuhiro Iwamatsu
   6  *
   7  * Based on board/renesas/rsk7264/lowlevel_init.S
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11 #include <config.h>
  12
  13 #include <asm/processor.h>
  14 #include <asm/macro.h>
  15
  16         .global lowlevel_init
  17
  18         .text
  19         .align  2
  20
  21 lowlevel_init:
  22         /* Flush and enable caches (data cache in write-through mode) */
  23         write32 CCR1_A ,CCR1_D
  24
  25         /* Disable WDT */
  26         write16 WTCSR_A, WTCSR_D
  27         write16 WTCNT_A, WTCNT_D
  28
  29         /* Disable Register Bank interrupts */
  30         write16 IBNR_A, IBNR_D
  31
  32         /* Set clocks based on 13.225MHz xtal */
  33         write16 FRQCR_A, FRQCR_D        /* CPU=266MHz, I=133MHz, P=66MHz */
  34
  35         /* Enable all peripherals */
  36         write8 STBCR3_A, STBCR3_D
  37         write8 STBCR4_A, STBCR4_D
  38         write8 STBCR5_A, STBCR5_D
  39         write8 STBCR6_A, STBCR6_D
  40         write8 STBCR7_A, STBCR7_D
  41         write8 STBCR8_A, STBCR8_D
  42         write8 STBCR9_A, STBCR9_D
  43         write8 STBCR10_A, STBCR10_D
  44
  45         /* SCIF7 and IIC2 */
  46         write16 PJCR3_A, PJCR3_D        /* TXD7 */
  47         write16 PECR1_A, PECR1_D        /* RXD7, SDA2, SCL2 */
  48
  49         /* Configure bus (CS0) */
  50         write16 PFCR3_A, PFCR3_D        /* A24 */
  51         write16 PFCR2_A, PFCR2_D        /* A23 and CS1# */
  52         write16 PBCR5_A, PBCR5_D        /* A22, A21, A20 */
  53         write16 PCCR0_A, PCCR0_D        /* DQMLL#, RD/WR# */
  54         write32 CS0WCR_A, CS0WCR_D
  55         write32 CS0BCR_A, CS0BCR_D
  56
  57         /* Configure SDRAM (CS3) */
  58         write16 PCCR2_A, PCCR2_D        /* CS3# */
  59         write16 PCCR1_A, PCCR1_D        /* CKE, CAS#, RAS#, DQMLU# */
  60         write16 PCCR0_A, PCCR0_D        /* DQMLL#, RD/WR# */
  61         write32 CS3BCR_A, CS3BCR_D
  62         write32 CS3WCR_A, CS3WCR_D
  63         write32 SDCR_A, SDCR_D
  64         write32 RTCOR_A, RTCOR_D
  65         write32 RTCSR_A, RTCSR_D
  66
  67         /* Configure ethernet (CS1) */
  68         write16 PHCR1_A, PHCR1_D        /* PINT5 on PH5 */
  69         write16 PHCR0_A, PHCR0_D
  70         write16 PFCR2_A, PFCR2_D        /* CS1# */
  71         write32 CS1BCR_A, CS1BCR_D      /* Big endian */
  72         write32 CS1WCR_A, CS1WCR_D      /* 1 cycle */
  73         write16 PJDR1_A, PJDR1_D        /* FIFO-SEL = 1 */
  74         write16 PJIOR1_A, PJIOR1_D
  75
  76         /* wait 200us */
  77         mov.l   REPEAT_D, r3
  78         mov     #0, r2
  79 repeat0:
  80         add     #1, r2
  81         cmp/hs  r3, r2
  82         bf      repeat0
  83         nop
  84
  85         mov.l   SDRAM_MODE, r1
  86         mov     #0, r0
  87         mov.l   r0, @r1
  88
  89         nop
  90         rts
  91
  92         .align 4
  93
  94 CCR1_A:         .long CCR1
  95 CCR1_D:         .long 0x0000090B
  96
  97 STBCR3_A:       .long 0xFFFE0408
  98 STBCR4_A:       .long 0xFFFE040C
  99 STBCR5_A:       .long 0xFFFE0410
 100 STBCR6_A:       .long 0xFFFE0414
 101 STBCR7_A:       .long 0xFFFE0418
 102 STBCR8_A:       .long 0xFFFE041C
 103 STBCR9_A:       .long 0xFFFE0440
 104 STBCR10_A:      .long 0xFFFE0444
 105 STBCR3_D:       .long 0x0000001A
 106 STBCR4_D:       .long 0x00000000
 107 STBCR5_D:       .long 0x00000000
 108 STBCR6_D:       .long 0x00000000
 109 STBCR7_D:       .long 0x00000012
 110 STBCR8_D:       .long 0x00000009
 111 STBCR9_D:       .long 0x00000000
 112 STBCR10_D:      .long 0x00000010
 113
 114 WTCSR_A:        .long 0xFFFE0000
 115 WTCNT_A:        .long 0xFFFE0002
 116 WTCSR_D:        .word 0xA518
 117 WTCNT_D:        .word 0x5A00
 118
 119 IBNR_A:         .long 0xFFFE080E
 120 IBNR_D:         .word 0x0000
 121 .align 2
 122 FRQCR_A:        .long 0xFFFE0010
 123 FRQCR_D:        .word 0x0015
 124 .align 2
 125
 126 PJCR3_A:        .long 0xFFFE3908
 127 PJCR3_D:        .word 0x5000
 128 .align 2
 129 PECR1_A:        .long 0xFFFE388C
 130 PECR1_D:        .word 0x2011
 131 .align 2
 132
 133 PFCR3_A:        .long 0xFFFE38A8
 134 PFCR2_A:        .long 0xFFFE38AA
 135 PBCR5_A:        .long 0xFFFE3824
 136 PFCR3_D:        .word 0x0010
 137 PFCR2_D:        .word 0x0101
 138 PBCR5_D:        .word 0x0111
 139 .align 2
 140 CS0WCR_A:       .long 0xFFFC0028
 141 CS0WCR_D:       .long 0x00000341
 142 CS0BCR_A:       .long 0xFFFC0004
 143 CS0BCR_D:       .long 0x00000400
 144
 145 PCCR2_A:        .long 0xFFFE384A
 146 PCCR1_A:        .long 0xFFFE384C
 147 PCCR0_A:        .long 0xFFFE384E
 148 PCCR2_D:        .word 0x0001
 149 PCCR1_D:        .word 0x1111
 150 PCCR0_D:        .word 0x1111
 151 .align 2
 152 CS3BCR_A:       .long 0xFFFC0010
 153 CS3BCR_D:       .long 0x00004400
 154 CS3WCR_A:       .long 0xFFFC0034
 155 CS3WCR_D:       .long 0x00004912
 156 SDCR_A:         .long 0xFFFC004C
 157 SDCR_D:         .long 0x00000811
 158 RTCOR_A:        .long 0xFFFC0058
 159 RTCOR_D:        .long 0xA55A0035
 160 RTCSR_A:        .long 0xFFFC0050
 161 RTCSR_D:        .long 0xA55A0010
 162 .align 2
 163 SDRAM_MODE:     .long 0xFFFC5460
 164 REPEAT_D:       .long 0x000033F1
 165
 166 PHCR1_A:        .long 0xFFFE38EC
 167 PHCR0_A:        .long 0xFFFE38EE
 168 PHCR1_D:        .word 0x2222
 169 PHCR0_D:        .word 0x2222
 170 .align 2
 171 CS1BCR_A:       .long 0xFFFC0008
 172 CS1BCR_D:       .long 0x00000400
 173 CS1WCR_A:       .long 0xFFFC002C
 174 CS1WCR_D:       .long 0x00000080
 175 PJDR1_A:        .long 0xFFFE3914
 176 PJDR1_D:        .word 0x0000
 177 .align 2
 178 PJIOR1_A:       .long 0xFFFE3910
 179 PJIOR1_D:       .word 0x8000
 180 .align 2