sh: MS7750SE support.

This adds support for the Hitachi MS7750SE.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

1 files changed, 169 insertions, 0 deletions

diff --git a/board/ms7750se/lowlevel_init.S b/board/ms7750se/lowlevel_init.S
new file mode 100644
index 0000000..056c691
--- /dev/null
+++ b/board/ms7750se/lowlevel_init.S
@@ -0,0 +1,169 @@
+/*
+	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 */
+