diff options
Diffstat (limited to 'board/r2dplus/lowlevel_init.S')
| -rw-r--r-- | board/r2dplus/lowlevel_init.S | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/board/r2dplus/lowlevel_init.S b/board/r2dplus/lowlevel_init.S new file mode 100644 index 0000000..5755de8 --- /dev/null +++ b/board/r2dplus/lowlevel_init.S @@ -0,0 +1,154 @@ +/* + * modified from SH-IPL+g (init-r0p751rlc0011rl.S) + * Initial Register Data for R0P751RLC0011RL (SH7751R 240MHz/120MHz/60MHz) + * Coyright (c) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> +*/ + +#include <config.h> +#include <version.h> + +#include <asm/processor.h> + + .global lowlevel_init + .text + .align 2 + +lowlevel_init: + + mov.l CCR_A, r1 + mov.l CCR_D_D, r0 + mov.l r0,@r1 + + mov.l MMUCR_A,r1 + mov.l MMUCR_D,r0 + mov.w r0,@r1 + + mov.l BCR1_A,r1 + mov.l BCR1_D,r0 + mov.l r0,@r1 + + mov.l BCR2_A,r1 + mov.l BCR2_D,r0 + mov.w r0,@r1 + + mov.l BCR3_A,r1 + mov.l BCR3_D,r0 + mov.w r0,@r1 + + mov.l BCR4_A,r1 + mov.l BCR4_D,r0 + mov.l r0,@r1 + + mov.l WCR1_A,r1 + mov.l WCR1_D,r0 + mov.l r0,@r1 + + mov.l WCR2_A,r1 + mov.l WCR2_D,r0 + mov.l r0,@r1 + + mov.l WCR3_A,r1 + mov.l WCR3_D,r0 + mov.l r0,@r1 + + mov.l PCR_A,r1 + mov.l PCR_D,r0 + mov.w r0,@r1 + + mov.l LED_A,r1 + mov #0xff,r0 + mov.w r0,@r1 + + mov.l MCR_A,r1 + mov.l MCR_D1,r0 + mov.l r0,@r1 + + mov.l RTCNT_A,r1 + mov.l RTCNT_D,r0 + mov.w r0,@r1 + + mov.l RTCOR_A,r1 + mov.l RTCOR_D,r0 + mov.w r0,@r1 + + mov.l RFCR_A,r1 + mov.l RFCR_D,r0 + mov.w r0,@r1 + + mov.l RTCSR_A,r1 + mov.l RTCSR_D,r0 + mov.w r0,@r1 + + mov.l SDMR3_A,r1 + mov #0x55,r0 + mov.b r0,@r1 + + /* Wait DRAM refresh 30 times */ + mov.l RFCR_A,r1 + mov #30,r3 +1: + mov.w @r1,r0 + extu.w r0,r2 + cmp/hi r3,r2 + bf 1b + + mov.l MCR_A,r1 + mov.l MCR_D2,r0 + mov.l r0,@r1 + + mov.l SDMR3_A,r1 + mov #0,r0 + mov.b r0,@r1 + + mov.l IRLMASK_A,r1 + mov.l IRLMASK_D,r0 + mov.l r0,@r1 + + mov.l CCR_A, r1 + mov.l CCR_D_E, r0 + mov.l r0, @r1 + + rts + nop + + .align 2 +CCR_A: .long CCR /* Cache Control Register */ +CCR_D_D: .long 0x0808 /* Flush the cache, disable */ +CCR_D_E: .long 0x8000090B + +FRQCR_A: .long FRQCR /* FRQCR Address */ +FRQCR_D: .long 0x00000e0a /* 03/07/15 modify */ +BCR1_A: .long BCR1 /* BCR1 Address */ +BCR1_D: .long 0x00180008 +BCR2_A: .long BCR2 /* BCR2 Address */ +BCR2_D: .long 0xabe8 +BCR3_A: .long BCR3 /* BCR3 Address */ +BCR3_D: .long 0x0000 +BCR4_A: .long BCR4 /* BCR4 Address */ +BCR4_D: .long 0x00000010 +WCR1_A: .long WCR1 /* WCR1 Address */ +WCR1_D: .long 0x33343333 +WCR2_A: .long WCR2 /* WCR2 Address */ +WCR2_D: .long 0xcff86fbf +WCR3_A: .long WCR3 /* WCR3 Address */ +WCR3_D: .long 0x07777707 +LED_A: .long 0x04000036 /* LED Address */ +RTCNT_A: .long RTCNT /* RTCNT Address */ +RTCNT_D: .long 0xA500 /* RTCNT Write Code A5h Data 00h */ +RTCOR_A: .long RTCOR /* RTCOR Address */ +RTCOR_D: .long 0xA534 /* RTCOR Write Code */ +RTCSR_A: .long RTCSR /* RTCSR Address */ +RTCSR_D: .long 0xA510 /* RTCSR Write Code */ +SDMR3_A: .long 0xFF9400CC /* SDMR3 Address */ +SDMR3_D: .long 0x55 +MCR_A: .long MCR /* MCR Address */ +MCR_D1: .long 0x081901F4 /* MRSET:'0' */ +MCR_D2: .long 0x481901F4 /* MRSET:'1' */ +RFCR_A: .long RFCR /* RFCR Address */ +RFCR_D: .long 0xA400 /* RFCR Write Code A4h Data 00h */ +PCR_A: .long PCR /* PCR Address */ +PCR_D: .long 0x0000 +MMUCR_A: .long MMUCR /* MMUCCR Address */ +MMUCR_D: .long 0x00000000 /* MMUCCR Data */ +IRLMASK_A: .long 0xA4000000 /* IRLMASK Address */ +IRLMASK_D: .long 0x00000000 /* IRLMASK Data */ |