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Diffstat (limited to 'board/ms7722se/lowlevel_init.S')
| -rw-r--r-- | board/ms7722se/lowlevel_init.S | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/board/ms7722se/lowlevel_init.S b/board/ms7722se/lowlevel_init.S new file mode 100644 index 0000000..2024e27 --- /dev/null +++ b/board/ms7722se/lowlevel_init.S @@ -0,0 +1,294 @@ +/* + * 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: + + mov.l CCR_A, r1 ! Address of Cache Control Register + mov.l CCR_D, r0 ! Instruction Cache Invalidate + mov.l r0, @r1 + + mov.l MMUCR_A, r1 ! Address of MMU Control Register + mov.l MMUCR_D, r0 ! TI == TLB Invalidate bit + mov.l r0, @r1 + + mov.l MSTPCR0_A, r1 ! Address of Power Control Register 0 + mov.l MSTPCR0_D, r0 ! + mov.l r0, @r1 + + mov.l MSTPCR2_A, r1 ! Address of Power Control Register 2 + 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 + +! mov.l RWTCSR_A, r1 ! 0xA4520004 (Watchdog Control / Status Register) +! mov.w RWTCSR_D_1, r0 ! 0xA507 -> timer_STOP/WDT_CLK=max +! mov.w r0, @r1 + + mov.l RWTCNT_A, r1 ! 0xA4520000 (Watchdog Count Register) + mov.w RWTCNT_D, r0 ! 0x5A00 -> Clear + mov.w r0, @r1 + + mov.l RWTCSR_A, r1 ! 0xA4520004 (Watchdog Control / Status Register) + mov.w RWTCSR_D_2, r0 ! 0xA504 -> timer_STOP/CLK=500ms + mov.w r0, @r1 + + mov.l FRQCR_A, r1 ! 0xA4150000 Frequency control register + mov.l FRQCR_D, r0 ! + mov.l r0, @r1 + + mov.l CCR_A, r1 ! Address of Cache Control Register + 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 + +SR_MASK_D: .long 0xEFFFFF0F |