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/*
* Copyright (C) 2007
* Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
*
* Copyright (C) 2007
* Kenati Technologies, Inc.
*
* board/ms7722se/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>
/*
* 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:
/* Address of Cache Control Register */
mov.l CCR_A, r1
/*Instruction Cache Invalidate */
mov.l CCR_D, r0
mov.l r0, @r1
/* Address of MMU Control Register */
mov.l MMUCR_A, r1
/* TI == TLB Invalidate bit */
mov.l MMUCR_D, r0
mov.l r0, @r1
/* Address of Power Control Register 0 */
mov.l MSTPCR0_A, r1
mov.l MSTPCR0_D, r0
mov.l r0, @r1
/* Address of Power Control Register 2 */
mov.l MSTPCR2_A, r1
mov.l MSTPCR2_D, r0
mov.l r0, @r1
mov.l SBSCR_A, r1
mov.w SBSCR_D, r0
mov.w r0, @r1
mov.l PSCR_A, r1
mov.w PSCR_D, r0
mov.w r0, @r1
/* 0xA4520004 (Watchdog Control / Status Register) */
! mov.l RWTCSR_A, r1
/* 0xA507 -> timer_STOP/WDT_CLK=max */
! mov.w RWTCSR_D_1, r0
! mov.w r0, @r1
/* 0xA4520000 (Watchdog Count Register) */
mov.l RWTCNT_A, r1
/*0x5A00 -> Clear */
mov.w RWTCNT_D, r0
mov.w r0, @r1
/* 0xA4520004 (Watchdog Control / Status Register) */
mov.l RWTCSR_A, r1
/* 0xA504 -> timer_STOP/CLK=500ms */
mov.w RWTCSR_D_2, r0
mov.w r0, @r1
/* 0xA4150000 Frequency control register */
mov.l FRQCR_A, r1
mov.l FRQCR_D, r0 !
mov.l r0, @r1
mov.l CCR_A, r1
mov.l CCR_D_2, r0
mov.l r0, @r1
bsc_init:
mov.l PSELA_A, r1
mov.w PSELA_D, r0
mov.w r0, @r1
mov.l DRVCR_A, r1
mov.w DRVCR_D, r0
mov.w r0, @r1
mov.l PCCR_A, r1
mov.w PCCR_D, r0
mov.w r0, @r1
mov.l PECR_A, r1
mov.w PECR_D, r0
mov.w r0, @r1
mov.l PJCR_A, r1
mov.w PJCR_D, r0
mov.w r0, @r1
mov.l PXCR_A, r1
mov.w PXCR_D, r0
mov.w r0, @r1
mov.l CMNCR_A, r1 ! CMNCR address -> R1
mov.l CMNCR_D, r0 ! CMNCR data -> R0
mov.l r0, @r1 ! CMNCR set
mov.l CS0BCR_A, r1 ! CS0BCR address -> R1
mov.l CS0BCR_D, r0 ! CS0BCR data -> R0
mov.l r0, @r1 ! CS0BCR set
mov.l CS2BCR_A, r1 ! CS2BCR address -> R1
mov.l CS2BCR_D, r0 ! CS2BCR data -> R0
mov.l r0, @r1 ! CS2BCR set
mov.l CS4BCR_A, r1 ! CS4BCR address -> R1
mov.l CS4BCR_D, r0 ! CS4BCR data -> R0
mov.l r0, @r1 ! CS4BCR set
mov.l CS5ABCR_A, r1 ! CS5ABCR address -> R1
mov.l CS5ABCR_D, r0 ! CS5ABCR data -> R0
mov.l r0, @r1 ! CS5ABCR set
mov.l CS5BBCR_A, r1 ! CS5BBCR address -> R1
mov.l CS5BBCR_D, r0 ! CS5BBCR data -> R0
mov.l r0, @r1 ! CS5BBCR set
mov.l CS6ABCR_A, r1 ! CS6ABCR address -> R1
mov.l CS6ABCR_D, r0 ! CS6ABCR data -> R0
mov.l r0, @r1 ! CS6ABCR set
mov.l CS0WCR_A, r1 ! CS0WCR address -> R1
mov.l CS0WCR_D, r0 ! CS0WCR data -> R0
mov.l r0, @r1 ! CS0WCR set
mov.l CS2WCR_A, r1 ! CS2WCR address -> R1
mov.l CS2WCR_D, r0 ! CS2WCR data -> R0
mov.l r0, @r1 ! CS2WCR set
mov.l CS4WCR_A, r1 ! CS4WCR address -> R1
mov.l CS4WCR_D, r0 ! CS4WCR data -> R0
mov.l r0, @r1 ! CS4WCR set
mov.l CS5AWCR_A, r1 ! CS5AWCR address -> R1
mov.l CS5AWCR_D, r0 ! CS5AWCR data -> R0
mov.l r0, @r1 ! CS5AWCR set
mov.l CS5BWCR_A, r1 ! CS5BWCR address -> R1
mov.l CS5BWCR_D, r0 ! CS5BWCR data -> R0
mov.l r0, @r1 ! CS5BWCR set
mov.l CS6AWCR_A, r1 ! CS6AWCR address -> R1
mov.l CS6AWCR_D, r0 ! CS6AWCR data -> R0
mov.l r0, @r1 ! CS6AWCR set
! SDRAM initialization
mov.l SDCR_A, r1 ! SB_SDCR address -> R1
mov.l SDCR_D, r0 ! SB_SDCR data -> R0
mov.l r0, @r1 ! SB_SDCR set
mov.l SDWCR_A, r1 ! SB_SDWCR address -> R1
mov.l SDWCR_D, r0 ! SB_SDWCR data -> R0
mov.l r0, @r1 ! SB_SDWCR set
mov.l SDPCR_A, r1 ! SB_SDPCR address -> R1
mov.l SDPCR_D, r0 ! SB_SDPCR data -> R0
mov.l r0, @r1 ! SB_SDPCR set
mov.l RTCOR_A, r1 ! SB_RTCOR address -> R1
mov.l RTCOR_D, r0 ! SB_RTCOR data -> R0
mov.l r0, @r1 ! SB_RTCOR set
mov.l RTCSR_A, r1 ! SB_RTCSR address -> R1
mov.l RTCSR_D, r0 ! SB_RTCSR data -> R0
mov.l r0, @r1 ! SB_RTCSR set
mov.l SDMR3_A, r1 ! SDMR3 address -> R1
mov #0x00, r0 ! SDMR3 data -> R0
mov.b r0, @r1 ! SDMR3 set
! 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 2
CCR_A: .long CCR
MMUCR_A: .long MMUCR
MSTPCR0_A: .long MSTPCR0
MSTPCR2_A: .long MSTPCR2
SBSCR_A: .long SBSCR
PSCR_A: .long PSCR
RWTCSR_A: .long RWTCSR
RWTCNT_A: .long RWTCNT
FRQCR_A: .long FRQCR
CCR_D: .long 0x00000800
CCR_D_2: .long 0x00000103
MMUCR_D: .long 0x00000004
MSTPCR0_D: .long 0x00001001
MSTPCR2_D: .long 0xffffffff
FRQCR_D: .long 0x07022538
PSELA_A: .long 0xa405014E
PSELA_D: .word 0x0A10
.align 2
DRVCR_A: .long 0xa405018A
DRVCR_D: .word 0x0554
.align 2
PCCR_A: .long 0xa4050104
PCCR_D: .word 0x8800
.align 2
PECR_A: .long 0xa4050108
PECR_D: .word 0x0000
.align 2
PJCR_A: .long 0xa4050110
PJCR_D: .word 0x1000
.align 2
PXCR_A: .long 0xa4050148
PXCR_D: .word 0x0AAA
.align 2
CMNCR_A: .long CMNCR
CMNCR_D: .long 0x00000013
CS0BCR_A: .long CS0BCR ! Flash bank 1
CS0BCR_D: .long 0x24920400
CS2BCR_A: .long CS2BCR ! SRAM
CS2BCR_D: .long 0x24920400
CS4BCR_A: .long CS4BCR ! FPGA, PCMCIA, USB, ext slot
CS4BCR_D: .long 0x24920400
CS5ABCR_A: .long CS5ABCR ! Ext slot
CS5ABCR_D: .long 0x24920400
CS5BBCR_A: .long CS5BBCR ! USB controller
CS5BBCR_D: .long 0x24920400
CS6ABCR_A: .long CS6ABCR ! Ethernet
CS6ABCR_D: .long 0x24920400
CS0WCR_A: .long CS0WCR
CS0WCR_D: .long 0x00000300
CS2WCR_A: .long CS2WCR
CS2WCR_D: .long 0x00000300
CS4WCR_A: .long CS4WCR
CS4WCR_D: .long 0x00000300
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 0x00020809
SDWCR_A: .long SBSC_SDWCR
SDWCR_D: .long 0x00164d0d
SDPCR_A: .long SBSC_SDPCR
SDPCR_D: .long 0x00000087
RTCOR_A: .long SBSC_RTCOR
RTCOR_D: .long 0xA55A0034
RTCSR_A: .long SBSC_RTCSR
RTCSR_D: .long 0xA55A0010
SDMR3_A: .long 0xFE500180
.align 1
SBSCR_D: .word 0x0040
PSCR_D: .word 0x0000
RWTCSR_D_1: .word 0xA507
RWTCSR_D_2: .word 0xA507
RWTCNT_D: .word 0x5A00
.align 2
SR_MASK_D: .long 0xEFFFFF0F
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