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/*
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* Copyright (C) 2007-2008
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* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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*
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* Copyright (C) 2007
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* Kenati Technologies, Inc.
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*
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* board/MigoR/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 <version.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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write32 CCR_A, CCR_D ! Address of Cache Control Register
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! Instruction Cache Invalidate
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write32 MMUCR_A, MMUCR_D ! Address of MMU Control Register
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! TI == TLB Invalidate bit
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write32 MSTPCR0_A, MSTPCR0_D ! Address of Power Control Register 0
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write32 MSTPCR2_A, MSTPCR2_D ! Address of Power Control Register 2
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write16 PFC_PULCR_A, PFC_PULCR_D
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write16 PFC_DRVCR_A, PFC_DRVCR_D
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write16 SBSCR_A, SBSCR_D
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write16 PSCR_A, PSCR_D
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write16 RWTCSR_A, RWTCSR_D_1 ! 0xA4520004 (Watchdog Control / Status Register)
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! 0xA507 -> timer_STOP / WDT_CLK = max
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write16 RWTCNT_A, RWTCNT_D ! 0xA4520000 (Watchdog Count Register)
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! 0x5A00 -> Clear
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write16 RWTCSR_A, RWTCSR_D_2 ! 0xA4520004 (Watchdog Control / Status Register)
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! 0xA504 -> timer_STOP / CLK = 500ms
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write32 DLLFRQ_A, DLLFRQ_D ! 20080115
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! 20080115
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write32 FRQCR_A, FRQCR_D ! 0xA4150000 Frequency control register
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! 20080115
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write32 CCR_A, CCR_D_2 ! Address of Cache Control Register
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! ??
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bsc_init:
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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 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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! SDRAM initialization
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write32 SDCR_A, SDCR_D
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write32 SDWCR_A, SDWCR_D
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write32 SDPCR_A, SDPCR_D
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write32 RTCOR_A, RTCOR_D
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write32 RTCNT_A, RTCNT_D
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write32 RTCSR_A, RTCSR_D
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write32 RFCR_A, RFCR_D
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write8 SDMR3_A, SDMR3_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 4
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CCR_A: .long CCR
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MMUCR_A: .long MMUCR
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MSTPCR0_A: .long MSTPCR0
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MSTPCR2_A: .long MSTPCR2
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PFC_PULCR_A: .long PULCR
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PFC_DRVCR_A: .long DRVCR
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SBSCR_A: .long SBSCR
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PSCR_A: .long PSCR
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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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PLLCR_A: .long PLLCR
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DLLFRQ_A: .long DLLFRQ
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CCR_D: .long 0x00000800
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CCR_D_2: .long 0x00000103
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MMUCR_D: .long 0x00000004
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MSTPCR0_D: .long 0x00001001
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MSTPCR2_D: .long 0xffffffff
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PFC_PULCR_D: .long 0x6000
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PFC_DRVCR_D: .long 0x0464
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FRQCR_D: .long 0x07033639
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PLLCR_D: .long 0x00005000
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DLLFRQ_D: .long 0x000004F6
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CMNCR_A: .long CMNCR
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CMNCR_D: .long 0x0000001B
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CS0BCR_A: .long CS0BCR
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CS0BCR_D: .long 0x24920400
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CS4BCR_A: .long CS4BCR
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CS4BCR_D: .long 0x00003400
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CS5ABCR_A: .long CS5ABCR
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CS5ABCR_D: .long 0x24920400
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CS5BBCR_A: .long CS5BBCR
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CS5BBCR_D: .long 0x24920400
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CS6ABCR_A: .long CS6ABCR
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CS6ABCR_D: .long 0x24920400
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CS0WCR_A: .long CS0WCR
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CS0WCR_D: .long 0x00000380
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CS4WCR_A: .long CS4WCR
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CS4WCR_D: .long 0x00110080
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CS5AWCR_A: .long CS5AWCR
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CS5AWCR_D: .long 0x00000300
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CS5BWCR_A: .long CS5BWCR
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CS5BWCR_D: .long 0x00000300
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CS6AWCR_A: .long CS6AWCR
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CS6AWCR_D: .long 0x00000300
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SDCR_A: .long SBSC_SDCR
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SDCR_D: .long 0x80160809
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SDWCR_A: .long SBSC_SDWCR
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SDWCR_D: .long 0x0014450C
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SDPCR_A: .long SBSC_SDPCR
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SDPCR_D: .long 0x00000087
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RTCOR_A: .long SBSC_RTCOR
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RTCNT_A: .long SBSC_RTCNT
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RTCNT_D: .long 0xA55A0012
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RTCOR_D: .long 0xA55A001C
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RTCSR_A: .long SBSC_RTCSR
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RFCR_A: .long SBSC_RFCR
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RFCR_D: .long 0xA55A0221
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RTCSR_D: .long 0xA55A009a
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SDMR3_A: .long 0xFE581180
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SDMR3_D: .long 0x0
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SR_MASK_D: .long 0xEFFFFF0F
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.align 2
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SBSCR_D: .word 0x0044
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PSCR_D: .word 0x0000
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RWTCSR_D_1: .word 0xA507
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RWTCSR_D_2: .word 0xA504
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RWTCNT_D: .word 0x5A00
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