| /* |
| modified from SH-IPL+g |
| Renesaso SuperH Solution Enginge MS775x BSC setting |
| Coyright (c) 2007 Nobuhiro Iwamatsu |
| */ |
| |
| #include <config.h> |
| #include <version.h> |
| |
| #include <asm/processor.h> |
| |
| #ifdef CONFIG_CPU_SUBTYPE_SH7751 |
| #define BCR2_D_VALUE 0x2FFC /* Area 1-6 width: 32/32/32/32/32/16 */ |
| #define WCR1_D_VALUE 0x02770771 /* DMA:0 A6:2 A3:0 A0:1 Others:15 */ |
| #ifdef CONFIG_MRSHPC |
| #define WCR2_D_VALUE 0xFFFE4FE7 /* A6:15 A6B:7 A5:15 A5B:7 A4:15 |
| A3:2 A2:15 A1:15 A0:6 A0B:7 */ |
| #else /* CONFIG_MRSHPC*/ |
| #define WCR2_D_VALUE 0x7FFE4FE7 /* A6:3 A6B:7 A5:15 A5B:7 A4:15 |
| A3:2 A2:15 A1:15 A0:6 A0B:7 */ |
| #endif /* CONFIG_MRSHPC */ |
| #define WCR3_D_VALUE 0x01777771 /* A6: 0-1 A5: 1-3 A4: 1-3 A3: 1-3 |
| A2: 1-3 A1: 1-3 A0: 0-1 */ |
| #define LED_ADDRESS 0xBA000000 /* Address of LED register */ |
| #define RTCOR_D_VALUE 0xA50D /* Write code A5, data 0D (~15us?) */ |
| #define SDMR3_ADDRESS 0xFF940088 /* SDMR3 address on 32-bit bus */ |
| #define MCR_D1_VALUE 0x100901B4 /* SDRAM 32-bit, CAS/RAS Refresh, ... */ |
| #define MCR_D2_VALUE 0x500901B4 /* Same w/MRSET now 1 (mode reg cmd) */ |
| #define SWITCH_ADDR 0xB9000000 /* Address of DIP switches */ |
| #else /* CONFIG_CPU_SUBTYPE_SH7751 */ |
| #define BCR2_D_VALUE 0x2E3C /* Area 1-6 width: 32/32/64/16/32/16 */ |
| #define WCR1_D_VALUE 0x02720777 /* DMA:0 A6:2 A4:2 A3:0 Others:15 */ |
| #define WCR2_D_VALUE 0xFFFE4FFF /* A6:15 A6B:7 A5:15 A5B:7 A4:15 |
| A3:2 A2:15 A1:15 A0:15 A0B:7 */ |
| #define WCR3_D_VALUE 0x01717771 /* A6: 0-1 A5: 1-3 A4: 0-1 A3: 1-3 |
| A2: 1-3 A1: 1-3 A0: 0-1 */ |
| #define LED_ADDRESS 0xB0C00000 /* Address of LED register */ |
| #define RTCOR_D_VALUE 0xA510 /* Write code A5, data 10 (~15us?) */ |
| #define SDMR3_ADDRESS 0xFF940110 /* SDMR3 address on 64-bit bus */ |
| #define MCR_D1_VALUE 0x8801001C /* SDRAM 64-bit, CAS/RAS Refresh, ... */ |
| #define MCR_D2_VALUE 0xC801001C /* Same w/MRSET now 1 (mode reg cmd) */ |
| #define SWITCH_ADDR 0xb0800000 /* Address of DIP switches */ |
| #endif /* CONFIG_CPU_SUBTYPE_SH7751 */ |
| |
| .global lowlevel_init |
| .text |
| .align 2 |
| |
| lowlevel_init: |
| |
| mov.l L_CCR, r1 ! CCR Address |
| mov.l L_CCR_DISABLE, r0 ! CCR Data |
| mov.l r0, @r1 |
| |
| init_bsc: |
| mov.l FRQCR_A,r1 /* FRQCR Address */ |
| mov.l FRQCR_D,r0 /* FRQCR Data */ |
| mov.w r0,@r1 |
| |
| mov.l BCR1_A,r1 /* BCR1 Address */ |
| mov.l BCR1_D,r0 /* BCR1 Data */ |
| mov.l r0,@r1 |
| |
| mov.l BCR2_A,r1 /* BCR2 Address */ |
| mov.l BCR2_D,r0 /* BCR2 Data */ |
| mov.w r0,@r1 |
| |
| mov.l WCR1_A,r1 /* WCR1 Address */ |
| mov.l WCR1_D,r0 /* WCR1 Data */ |
| mov.l r0,@r1 |
| |
| mov.l WCR2_A,r1 /* WCR2 Address */ |
| mov.l WCR2_D,r0 /* WCR2 Data */ |
| mov.l r0,@r1 |
| |
| mov.l WCR3_A,r1 /* WCR3 Address */ |
| mov.l WCR3_D,r0 /* WCR3 Data */ |
| mov.l r0,@r1 |
| |
| mov.l LED_A,r1 /* LED Address */ |
| mov #0xff,r0 /* LED ALL 'on' */ |
| shll8 r0 |
| mov.w r0,@r1 |
| |
| mov.l MCR_A,r1 /* MCR Address */ |
| mov.l MCR_D1,r0 /* MCR Data1 */ |
| mov.l r0,@r1 |
| |
| mov.l SDMR3_A,r1 /* Set SDRAM mode */ |
| mov #0,r0 |
| mov.b r0,@r1 |
| |
| ! Do you need PCMCIA setting? |
| ! If so, please add the lines here... |
| |
| mov.l RTCNT_A,r1 /* RTCNT Address */ |
| mov.l RTCNT_D,r0 /* RTCNT Data */ |
| mov.w r0,@r1 |
| |
| mov.l RTCOR_A,r1 /* RTCOR Address */ |
| mov.l RTCOR_D,r0 /* RTCOR Data */ |
| mov.w r0,@r1 |
| |
| mov.l RTCSR_A,r1 /* RTCSR Address */ |
| mov.l RTCSR_D,r0 /* RTCSR Data */ |
| mov.w r0,@r1 |
| |
| mov.l RFCR_A,r1 /* RFCR Address */ |
| mov.l RFCR_D,r0 /* RFCR Data */ |
| mov.w r0,@r1 /* Clear reflesh counter */ |
| /* Wait DRAM refresh 30 times */ |
| mov #30,r3 |
| 1: |
| mov.w @r1,r0 |
| extu.w r0,r2 |
| cmp/hi r3,r2 |
| bf 1b |
| |
| mov.l MCR_A,r1 /* MCR Address */ |
| mov.l MCR_D2,r0 /* MCR Data2 */ |
| mov.l r0,@r1 |
| |
| mov.l SDMR3_A,r1 /* Set SDRAM mode */ |
| mov #0,r0 |
| mov.b r0,@r1 |
| |
| rts |
| nop |
| |
| .align 2 |
| |
| L_CCR: .long CCR |
| L_CCR_DISABLE: .long 0x0808 |
| FRQCR_A: .long FRQCR |
| FRQCR_D: |
| #ifdef CONFIG_CPU_SUBTYPE_SH_R |
| .long 0x00000e1a /* 12:3:3 */ |
| #else |
| #ifdef CONFIG_GOOD_SESH4 |
| .long 0x00000e13 /* 6:2:1 */ |
| #else |
| .long 0x00000e23 /* 6:1:1 */ |
| #endif |
| #endif /* CONFIG_CPU_SUBTYPE_SH_R */ |
| |
| BCR1_A: .long BCR1 |
| BCR1_D: .long 0x00000008 /* Area 3 SDRAM */ |
| BCR2_A: .long BCR2 |
| BCR2_D: .long BCR2_D_VALUE /* Bus width settings */ |
| WCR1_A: .long WCR1 |
| WCR1_D: .long WCR1_D_VALUE /* Inter-area or turnaround wait states */ |
| WCR2_A: .long WCR2 |
| WCR2_D: .long WCR2_D_VALUE /* Per-area access and burst wait states */ |
| WCR3_A: .long WCR3 |
| WCR3_D: .long WCR3_D_VALUE /* Address setup and data hold cycles */ |
| LED_A: .long LED_ADDRESS /* LED Address */ |
| RTCSR_A: .long RTCSR |
| RTCSR_D: .long 0xA518 /* RTCSR Write Code A5h Data 18h */ |
| RTCNT_A: .long RTCNT |
| RTCNT_D: .long 0xA500 /* RTCNT Write Code A5h Data 00h */ |
| RTCOR_A: .long RTCOR |
| RTCOR_D: .long RTCOR_D_VALUE /* Set refresh time (about 15us) */ |
| SDMR3_A: .long SDMR3_ADDRESS |
| MCR_A: .long MCR |
| MCR_D1: .long MCR_D1_VALUE |
| MCR_D2: .long MCR_D2_VALUE |
| RFCR_A: .long RFCR |
| RFCR_D: .long 0xA400 /* RFCR Write Code A4h Data 00h */ |
| |