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/*
* Copyright (C) 2007-2008
* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*
* Copyright (C) 2007
* Kenati Technologies, Inc.
*
* board/MigoR/lowlevel_init.S
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <config.h>
#include <version.h>
#include <asm/processor.h>
#include <asm/macro.h>
/*
* Board specific low level init code, called _very_ early in the
* startup sequence. Relocation to SDRAM has not happened yet, no
* stack is available, bss section has not been initialised, etc.
*
* (Note: As no stack is available, no subroutines can be called...).
*/
.global lowlevel_init
.text
.align 2
lowlevel_init:
write32 CCR_A, CCR_D ! Address of Cache Control Register
! Instruction Cache Invalidate
write32 MMUCR_A, MMUCR_D ! Address of MMU Control Register
! TI == TLB Invalidate bit
write32 MSTPCR0_A, MSTPCR0_D ! Address of Power Control Register 0
write32 MSTPCR2_A, MSTPCR2_D ! Address of Power Control Register 2
write16 PFC_PULCR_A, PFC_PULCR_D
write16 PFC_DRVCR_A, PFC_DRVCR_D
write16 SBSCR_A, SBSCR_D
write16 PSCR_A, PSCR_D
write16 RWTCSR_A, RWTCSR_D_1 ! 0xA4520004 (Watchdog Control / Status Register)
! 0xA507 -> timer_STOP / WDT_CLK = max
write16 RWTCNT_A, RWTCNT_D ! 0xA4520000 (Watchdog Count Register)
! 0x5A00 -> Clear
write16 RWTCSR_A, RWTCSR_D_2 ! 0xA4520004 (Watchdog Control / Status Register)
! 0xA504 -> timer_STOP / CLK = 500ms
write32 DLLFRQ_A, DLLFRQ_D ! 20080115
! 20080115
write32 FRQCR_A, FRQCR_D ! 0xA4150000 Frequency control register
! 20080115
write32 CCR_A, CCR_D_2 ! Address of Cache Control Register
! ??
bsc_init:
write32 CMNCR_A, CMNCR_D
write32 CS0BCR_A, CS0BCR_D
write32 CS4BCR_A, CS4BCR_D
write32 CS5ABCR_A, CS5ABCR_D
write32 CS5BBCR_A, CS5BBCR_D
write32 CS6ABCR_A, CS6ABCR_D
write32 CS0WCR_A, CS0WCR_D
write32 CS4WCR_A, CS4WCR_D
write32 CS5AWCR_A, CS5AWCR_D
write32 CS5BWCR_A, CS5BWCR_D
write32 CS6AWCR_A, CS6AWCR_D
! SDRAM initialization
write32 SDCR_A, SDCR_D
write32 SDWCR_A, SDWCR_D
write32 SDPCR_A, SDPCR_D
write32 RTCOR_A, RTCOR_D
write32 RTCNT_A, RTCNT_D
write32 RTCSR_A, RTCSR_D
write32 RFCR_A, RFCR_D
write8 SDMR3_A, SDMR3_D
! BL bit off (init = ON) (?!?)
stc sr, r0 ! BL bit off(init=ON)
mov.l SR_MASK_D, r1
and r1, r0
ldc r0, sr
rts
mov #0, r0
.align 4
CCR_A: .long CCR
MMUCR_A: .long MMUCR
MSTPCR0_A: .long MSTPCR0
MSTPCR2_A: .long MSTPCR2
PFC_PULCR_A: .long PULCR
PFC_DRVCR_A: .long DRVCR
SBSCR_A: .long SBSCR
PSCR_A: .long PSCR
RWTCSR_A: .long RWTCSR
RWTCNT_A: .long RWTCNT
FRQCR_A: .long FRQCR
PLLCR_A: .long PLLCR
DLLFRQ_A: .long DLLFRQ
CCR_D: .long 0x00000800
CCR_D_2: .long 0x00000103
MMUCR_D: .long 0x00000004
MSTPCR0_D: .long 0x00001001
MSTPCR2_D: .long 0xffffffff
PFC_PULCR_D: .long 0x6000
PFC_DRVCR_D: .long 0x0464
FRQCR_D: .long 0x07033639
PLLCR_D: .long 0x00005000
DLLFRQ_D: .long 0x000004F6
CMNCR_A: .long CMNCR
CMNCR_D: .long 0x0000001B
CS0BCR_A: .long CS0BCR
CS0BCR_D: .long 0x24920400
CS4BCR_A: .long CS4BCR
CS4BCR_D: .long 0x00003400
CS5ABCR_A: .long CS5ABCR
CS5ABCR_D: .long 0x24920400
CS5BBCR_A: .long CS5BBCR
CS5BBCR_D: .long 0x24920400
CS6ABCR_A: .long CS6ABCR
CS6ABCR_D: .long 0x24920400
CS0WCR_A: .long CS0WCR
CS0WCR_D: .long 0x00000380
CS4WCR_A: .long CS4WCR
CS4WCR_D: .long 0x00110080
CS5AWCR_A: .long CS5AWCR
CS5AWCR_D: .long 0x00000300
CS5BWCR_A: .long CS5BWCR
CS5BWCR_D: .long 0x00000300
CS6AWCR_A: .long CS6AWCR
CS6AWCR_D: .long 0x00000300
SDCR_A: .long SBSC_SDCR
SDCR_D: .long 0x80160809
SDWCR_A: .long SBSC_SDWCR
SDWCR_D: .long 0x0014450C
SDPCR_A: .long SBSC_SDPCR
SDPCR_D: .long 0x00000087
RTCOR_A: .long SBSC_RTCOR
RTCNT_A: .long SBSC_RTCNT
RTCNT_D: .long 0xA55A0012
RTCOR_D: .long 0xA55A001C
RTCSR_A: .long SBSC_RTCSR
RFCR_A: .long SBSC_RFCR
RFCR_D: .long 0xA55A0221
RTCSR_D: .long 0xA55A009a
SDMR3_A: .long 0xFE581180
SDMR3_D: .long 0x0
SR_MASK_D: .long 0xEFFFFF0F
.align 2
SBSCR_D: .word 0x0044
PSCR_D: .word 0x0000
RWTCSR_D_1: .word 0xA507
RWTCSR_D_2: .word 0xA504
RWTCNT_D: .word 0x5A00
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