| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Copyright (C) 2012 Renesas Electronics Europe Ltd. |
| * Copyright (C) 2012 Phil Edworthy |
| * Copyright (C) 2008 Renesas Solutions Corp. |
| * Copyright (C) 2008 Nobuhiro Iwamatsu |
| * |
| * Based on board/renesas/rsk7264/lowlevel_init.S |
| */ |
| #include <config.h> |
| |
| #include <asm/processor.h> |
| #include <asm/macro.h> |
| |
| .global lowlevel_init |
| |
| .text |
| .align 2 |
| |
| lowlevel_init: |
| /* Flush and enable caches (data cache in write-through mode) */ |
| write32 CCR1_A ,CCR1_D |
| |
| /* Disable WDT */ |
| write16 WTCSR_A, WTCSR_D |
| write16 WTCNT_A, WTCNT_D |
| |
| /* Disable Register Bank interrupts */ |
| write16 IBNR_A, IBNR_D |
| |
| /* Set clocks based on 13.225MHz xtal */ |
| write16 FRQCR_A, FRQCR_D /* CPU=266MHz, I=133MHz, P=66MHz */ |
| |
| /* Enable all peripherals */ |
| write8 STBCR3_A, STBCR3_D |
| write8 STBCR4_A, STBCR4_D |
| write8 STBCR5_A, STBCR5_D |
| write8 STBCR6_A, STBCR6_D |
| write8 STBCR7_A, STBCR7_D |
| write8 STBCR8_A, STBCR8_D |
| write8 STBCR9_A, STBCR9_D |
| write8 STBCR10_A, STBCR10_D |
| |
| /* SCIF7 and IIC2 */ |
| write16 PJCR3_A, PJCR3_D /* TXD7 */ |
| write16 PECR1_A, PECR1_D /* RXD7, SDA2, SCL2 */ |
| |
| /* Configure bus (CS0) */ |
| write16 PFCR3_A, PFCR3_D /* A24 */ |
| write16 PFCR2_A, PFCR2_D /* A23 and CS1# */ |
| write16 PBCR5_A, PBCR5_D /* A22, A21, A20 */ |
| write16 PCCR0_A, PCCR0_D /* DQMLL#, RD/WR# */ |
| write32 CS0WCR_A, CS0WCR_D |
| write32 CS0BCR_A, CS0BCR_D |
| |
| /* Configure SDRAM (CS3) */ |
| write16 PCCR2_A, PCCR2_D /* CS3# */ |
| write16 PCCR1_A, PCCR1_D /* CKE, CAS#, RAS#, DQMLU# */ |
| write16 PCCR0_A, PCCR0_D /* DQMLL#, RD/WR# */ |
| write32 CS3BCR_A, CS3BCR_D |
| write32 CS3WCR_A, CS3WCR_D |
| write32 SDCR_A, SDCR_D |
| write32 RTCOR_A, RTCOR_D |
| write32 RTCSR_A, RTCSR_D |
| |
| /* Configure ethernet (CS1) */ |
| write16 PHCR1_A, PHCR1_D /* PINT5 on PH5 */ |
| write16 PHCR0_A, PHCR0_D |
| write16 PFCR2_A, PFCR2_D /* CS1# */ |
| write32 CS1BCR_A, CS1BCR_D /* Big endian */ |
| write32 CS1WCR_A, CS1WCR_D /* 1 cycle */ |
| write16 PJDR1_A, PJDR1_D /* FIFO-SEL = 1 */ |
| write16 PJIOR1_A, PJIOR1_D |
| |
| /* wait 200us */ |
| mov.l REPEAT_D, r3 |
| mov #0, r2 |
| repeat0: |
| add #1, r2 |
| cmp/hs r3, r2 |
| bf repeat0 |
| nop |
| |
| mov.l SDRAM_MODE, r1 |
| mov #0, r0 |
| mov.l r0, @r1 |
| |
| nop |
| rts |
| |
| .align 4 |
| |
| CCR1_A: .long CCR1 |
| CCR1_D: .long 0x0000090B |
| |
| STBCR3_A: .long 0xFFFE0408 |
| STBCR4_A: .long 0xFFFE040C |
| STBCR5_A: .long 0xFFFE0410 |
| STBCR6_A: .long 0xFFFE0414 |
| STBCR7_A: .long 0xFFFE0418 |
| STBCR8_A: .long 0xFFFE041C |
| STBCR9_A: .long 0xFFFE0440 |
| STBCR10_A: .long 0xFFFE0444 |
| STBCR3_D: .long 0x0000001A |
| STBCR4_D: .long 0x00000000 |
| STBCR5_D: .long 0x00000000 |
| STBCR6_D: .long 0x00000000 |
| STBCR7_D: .long 0x00000012 |
| STBCR8_D: .long 0x00000009 |
| STBCR9_D: .long 0x00000000 |
| STBCR10_D: .long 0x00000010 |
| |
| WTCSR_A: .long 0xFFFE0000 |
| WTCNT_A: .long 0xFFFE0002 |
| WTCSR_D: .word 0xA518 |
| WTCNT_D: .word 0x5A00 |
| |
| IBNR_A: .long 0xFFFE080E |
| IBNR_D: .word 0x0000 |
| .align 2 |
| FRQCR_A: .long 0xFFFE0010 |
| FRQCR_D: .word 0x0015 |
| .align 2 |
| |
| PJCR3_A: .long 0xFFFE3908 |
| PJCR3_D: .word 0x5000 |
| .align 2 |
| PECR1_A: .long 0xFFFE388C |
| PECR1_D: .word 0x2011 |
| .align 2 |
| |
| PFCR3_A: .long 0xFFFE38A8 |
| PFCR2_A: .long 0xFFFE38AA |
| PBCR5_A: .long 0xFFFE3824 |
| PFCR3_D: .word 0x0010 |
| PFCR2_D: .word 0x0101 |
| PBCR5_D: .word 0x0111 |
| .align 2 |
| CS0WCR_A: .long 0xFFFC0028 |
| CS0WCR_D: .long 0x00000341 |
| CS0BCR_A: .long 0xFFFC0004 |
| CS0BCR_D: .long 0x00000400 |
| |
| PCCR2_A: .long 0xFFFE384A |
| PCCR1_A: .long 0xFFFE384C |
| PCCR0_A: .long 0xFFFE384E |
| PCCR2_D: .word 0x0001 |
| PCCR1_D: .word 0x1111 |
| PCCR0_D: .word 0x1111 |
| .align 2 |
| CS3BCR_A: .long 0xFFFC0010 |
| CS3BCR_D: .long 0x00004400 |
| CS3WCR_A: .long 0xFFFC0034 |
| CS3WCR_D: .long 0x00004912 |
| SDCR_A: .long 0xFFFC004C |
| SDCR_D: .long 0x00000811 |
| RTCOR_A: .long 0xFFFC0058 |
| RTCOR_D: .long 0xA55A0035 |
| RTCSR_A: .long 0xFFFC0050 |
| RTCSR_D: .long 0xA55A0010 |
| .align 2 |
| SDRAM_MODE: .long 0xFFFC5460 |
| REPEAT_D: .long 0x000033F1 |
| |
| PHCR1_A: .long 0xFFFE38EC |
| PHCR0_A: .long 0xFFFE38EE |
| PHCR1_D: .word 0x2222 |
| PHCR0_D: .word 0x2222 |
| .align 2 |
| CS1BCR_A: .long 0xFFFC0008 |
| CS1BCR_D: .long 0x00000400 |
| CS1WCR_A: .long 0xFFFC002C |
| CS1WCR_D: .long 0x00000080 |
| PJDR1_A: .long 0xFFFE3914 |
| PJDR1_D: .word 0x0000 |
| .align 2 |
| PJIOR1_A: .long 0xFFFE3910 |
| PJIOR1_D: .word 0x8000 |
| .align 2 |
