| Phil Edworthy | 04a6275 | 2012-05-15 22:15:51 +0000 | [diff] [blame] | 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 | * |
| Wolfgang Denk | d79de1d | 2013-07-08 09:37:19 +0200 | [diff] [blame] | 9 | * SPDX-License-Identifier: GPL-2.0+ |
| Phil Edworthy | 04a6275 | 2012-05-15 22:15:51 +0000 | [diff] [blame] | 10 | */ |
| 11 | #include <config.h> |
| Phil Edworthy | 04a6275 | 2012-05-15 22:15:51 +0000 | [diff] [blame] | 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 |