172 lines
3.3 KiB
ArmAsm
172 lines
3.3 KiB
ArmAsm
/*
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* Copyright (C) 2008 Renesas Solutions Corp.
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* Copyright (C) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
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*
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* board/ap325rxa/lowlevel_init.S
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <asm/processor.h>
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#include <asm/macro.h>
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/*
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* Board specific low level init code, called _very_ early in the
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* startup sequence. Relocation to SDRAM has not happened yet, no
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* stack is available, bss section has not been initialised, etc.
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*
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* (Note: As no stack is available, no subroutines can be called...).
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*/
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.global lowlevel_init
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.text
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.align 2
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lowlevel_init:
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write16 DRVCRA_A, DRVCRA_D
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write16 DRVCRB_A, DRVCRB_D
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write16 RWTCSR_A, RWTCSR_D1
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write16 RWTCNT_A, RWTCNT_D
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write16 RWTCSR_A, RWTCSR_D2
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write32 FRQCR_A, FRQCR_D
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write32 CMNCR_A, CMNCR_D
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write32 CS0BCR_A, CS0BCR_D
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write32 CS4BCR_A, CS4BCR_D
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write32 CS5ABCR_A, CS5ABCR_D
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write32 CS5BBCR_A, CS5BBCR_D
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write32 CS6ABCR_A, CS6ABCR_D
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write32 CS6BBCR_A, CS6BBCR_D
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write32 CS0WCR_A, CS0WCR_D
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write32 CS4WCR_A, CS4WCR_D
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write32 CS5AWCR_A, CS5AWCR_D
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write32 CS5BWCR_A, CS5BWCR_D
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write32 CS6AWCR_A, CS6AWCR_D
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write32 CS6BWCR_A, CS6BWCR_D
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write32 SBSC_SDCR_A, SBSC_SDCR_D1
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write32 SBSC_SDWCR_A, SBSC_SDWCR_D
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write32 SBSC_SDPCR_A, SBSC_SDPCR_D
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write32 SBSC_RTCSR_A, SBSC_RTCSR_D
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write32 SBSC_RTCNT_A, SBSC_RTCNT_D
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write32 SBSC_RTCOR_A, SBSC_RTCOR_D
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write8 SBSC_SDMR3_A1, SBSC_SDMR3_D
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write8 SBSC_SDMR3_A2, SBSC_SDMR3_D
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mov.l SLEEP_CNT, r1
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2: tst r1, r1
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nop
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bf/s 2b
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dt r1
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write8 SBSC_SDMR3_A3, SBSC_SDMR3_D
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write32 SBSC_SDCR_A, SBSC_SDCR_D2
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write32 CCR_A, CCR_D
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! BL bit off (init = ON) (?!?)
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stc sr, r0 ! BL bit off(init=ON)
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mov.l SR_MASK_D, r1
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and r1, r0
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ldc r0, sr
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rts
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mov #0, r0
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.align 2
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DRVCRA_A: .long DRVCRA
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DRVCRB_A: .long DRVCRB
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DRVCRA_D: .word 0x4555
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DRVCRB_D: .word 0x0005
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RWTCSR_A: .long RWTCSR
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RWTCNT_A: .long RWTCNT
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FRQCR_A: .long FRQCR
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RWTCSR_D1: .word 0xa507
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RWTCSR_D2: .word 0xa504
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RWTCNT_D: .word 0x5a00
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.align 2
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FRQCR_D: .long 0x0b04474a
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SBSC_SDCR_A: .long SBSC_SDCR
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SBSC_SDWCR_A: .long SBSC_SDWCR
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SBSC_SDPCR_A: .long SBSC_SDPCR
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SBSC_RTCSR_A: .long SBSC_RTCSR
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SBSC_RTCNT_A: .long SBSC_RTCNT
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SBSC_RTCOR_A: .long SBSC_RTCOR
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SBSC_SDMR3_A1: .long 0xfe510000
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SBSC_SDMR3_A2: .long 0xfe500242
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SBSC_SDMR3_A3: .long 0xfe5c0042
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SBSC_SDCR_D1: .long 0x92810112
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SBSC_SDCR_D2: .long 0x92810912
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SBSC_SDWCR_D: .long 0x05162482
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SBSC_SDPCR_D: .long 0x00300087
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SBSC_RTCSR_D: .long 0xa55a0212
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SBSC_RTCNT_D: .long 0xa55a0000
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SBSC_RTCOR_D: .long 0xa55a0040
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SBSC_SDMR3_D: .long 0x00
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CMNCR_A: .long CMNCR
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CS0BCR_A: .long CS0BCR
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CS4BCR_A: .long CS4BCR
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CS5ABCR_A: .long CS5ABCR
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CS5BBCR_A: .long CS5BBCR
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CS6ABCR_A: .long CS6ABCR
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CS6BBCR_A: .long CS6BBCR
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CS0WCR_A: .long CS0WCR
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CS4WCR_A: .long CS4WCR
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CS5AWCR_A: .long CS5AWCR
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CS5BWCR_A: .long CS5BWCR
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CS6AWCR_A: .long CS6AWCR
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CS6BWCR_A: .long CS6BWCR
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CMNCR_D: .long 0x00000013
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CS0BCR_D: .long 0x24920400
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CS4BCR_D: .long 0x24920400
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CS5ABCR_D: .long 0x24920400
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CS5BBCR_D: .long 0x7fff0600
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CS6ABCR_D: .long 0x24920400
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CS6BBCR_D: .long 0x24920600
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CS0WCR_D: .long 0x00000480
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CS4WCR_D: .long 0x00000480
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CS5AWCR_D: .long 0x00000380
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CS5BWCR_D: .long 0x00000080
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CS6AWCR_D: .long 0x00000300
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CS6BWCR_D: .long 0x00000540
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CCR_A: .long 0xff00001c
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CCR_D: .long 0x0000090d
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SLEEP_CNT: .long 0x00000800
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SR_MASK_D: .long 0xEFFFFF0F
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