lowlevel_init.S
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/*
* 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
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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