lowlevel_init.S
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2011 Renesas Solutions Corp.
* Copyright (C) 2011 Nobuhiro Iwamatsu <nobuhiro.Iwamatsu.yj@renesas.com>
*
* board/renesas/ecovec/lowlevel_init.S
*/
#include <config.h>
#include <asm/processor.h>
#include <asm/macro.h>
#include <configs/ecovec.h>
.global lowlevel_init
.text
.align 2
lowlevel_init:
/* jump to CONFIG_ECOVEC_ROMIMAGE_ADDR if bit 1 of PVDR_A */
mov.l PVDR_A, r1
mov.l PVDR_D, r2
mov.b @r1, r0
tst r0, r2
bt 1f
mov.l JUMP_A, r1
jmp @r1
nop
1:
/* Disable watchdog */
write16 RWTCSR_A, RWTCSR_D
/* MMU Disable */
write32 MMUCR_A, MMUCR_D
/* Setup clocks */
write32 PLLCR_A, PLLCR_D
write32 FRQCRA_A, FRQCRA_D
write32 FRQCRB_A, FRQCRB_D
wait_timer TIMER_D
write32 MMSELR_A, MMSELR_D
/* Srtup BSC */
write32 CMNCR_A, CMNCR_D
write32 CS0BCR_A, CS0BCR_D
write32 CS0WCR_A, CS0WCR_D
wait_timer TIMER_D
/* Setup SDRAM */
write32 DBPDCNT0_A, DBPDCNT0_D0
write32 DBCONF_A, DBCONF_D
write32 DBTR0_A, DBTR0_D
write32 DBTR1_A, DBTR1_D
write32 DBTR2_A, DBTR2_D
write32 DBTR3_A, DBTR3_D
write32 DBKIND_A, DBKIND_D
write32 DBCKECNT_A, DBCKECNT_D
wait_timer TIMER_D
write32 DBCMDCNT_A, DBCMDCNT_D0
write32 DBMRCNT_A, DBMRCNT_D0
write32 DBMRCNT_A, DBMRCNT_D1
write32 DBMRCNT_A, DBMRCNT_D2
write32 DBMRCNT_A, DBMRCNT_D3
write32 DBCMDCNT_A, DBCMDCNT_D0
write32 DBCMDCNT_A, DBCMDCNT_D1
write32 DBCMDCNT_A, DBCMDCNT_D1
write32 DBMRCNT_A, DBMRCNT_D4
write32 DBMRCNT_A, DBMRCNT_D5
write32 DBMRCNT_A, DBMRCNT_D6
wait_timer TIMER_D
write32 DBEN_A, DBEN_D
write32 DBRFPDN1_A, DBRFPDN1_D
write32 DBRFPDN2_A, DBRFPDN2_D
write32 DBCMDCNT_A, DBCMDCNT_D0
/* Dummy read */
mov.l DUMMY_A ,r1
synco
mov.l @r1, r0
synco
mov.l SDRAM_A ,r1
synco
mov.l @r1, r0
synco
wait_timer TIMER_D
add #4, r1
synco
mov.l @r1, r0
synco
wait_timer TIMER_D
add #4, r1
synco
mov.l @r1, r0
synco
wait_timer TIMER_D
add #4, r1
synco
mov.l @r1, r0
synco
wait_timer TIMER_D
write32 DBCMDCNT_A, DBCMDCNT_D0
write32 DBCMDCNT_A, DBCMDCNT_D1
write32 DBPDCNT0_A, DBPDCNT0_D1
write32 DBRFPDN0_A, DBRFPDN0_D
wait_timer TIMER_D
write32 CCR_A, CCR_D
stc sr, r0
mov.l SR_MASK_D, r1
and r1, r0
ldc r0, sr
rts
.align 2
PVDR_A: .long PVDR
PVDR_D: .long 0x00000001
JUMP_A: .long CONFIG_ECOVEC_ROMIMAGE_ADDR
TIMER_D: .long 64
RWTCSR_A: .long RWTCSR
RWTCSR_D: .long 0x0000A507
MMUCR_A: .long MMUCR
MMUCR_D: .long 0x00000004
PLLCR_A: .long PLLCR
PLLCR_D: .long 0x00004000
FRQCRA_A: .long FRQCRA
FRQCRA_D: .long 0x8E003508
FRQCRB_A: .long FRQCRB
FRQCRB_D: .long 0x0
MMSELR_A: .long MMSELR
MMSELR_D: .long 0xA5A50000
CMNCR_A: .long CMNCR
CMNCR_D: .long 0x00000013
CS0BCR_A: .long CS0BCR
CS0BCR_D: .long 0x11110400
CS0WCR_A: .long CS0WCR
CS0WCR_D: .long 0x00000440
DBPDCNT0_A: .long DBPDCNT0
DBPDCNT0_D0: .long 0x00000181
DBPDCNT0_D1: .long 0x00000080
DBCONF_A: .long DBCONF
DBCONF_D: .long 0x015B0002
DBTR0_A: .long DBTR0
DBTR0_D: .long 0x03061502
DBTR1_A: .long DBTR1
DBTR1_D: .long 0x02020102
DBTR2_A: .long DBTR2
DBTR2_D: .long 0x01090305
DBTR3_A: .long DBTR3
DBTR3_D: .long 0x00000002
DBKIND_A: .long DBKIND
DBKIND_D: .long 0x00000005
DBCKECNT_A: .long DBCKECNT
DBCKECNT_D: .long 0x00000001
DBCMDCNT_A: .long DBCMDCNT
DBCMDCNT_D0:.long 0x2
DBCMDCNT_D1:.long 0x4
DBMRCNT_A: .long DBMRCNT
DBMRCNT_D0: .long 0x00020000
DBMRCNT_D1: .long 0x00030000
DBMRCNT_D2: .long 0x00010040
DBMRCNT_D3: .long 0x00000532
DBMRCNT_D4: .long 0x00000432
DBMRCNT_D5: .long 0x000103C0
DBMRCNT_D6: .long 0x00010040
DBEN_A: .long DBEN
DBEN_D: .long 0x01
DBRFPDN0_A: .long DBRFPDN0
DBRFPDN1_A: .long DBRFPDN1
DBRFPDN2_A: .long DBRFPDN2
DBRFPDN0_D: .long 0x00010000
DBRFPDN1_D: .long 0x00000613
DBRFPDN2_D: .long 0x238C003A
SDRAM_A: .long 0xa8000000
DUMMY_A: .long 0x0c400000
CCR_A: .long CCR
CCR_D: .long 0x0000090B
SR_MASK_D: .long 0xEFFFFF0F