board/renesas/rsk7269/lowlevel_init.S

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