sh: Add support Renesas Solutions R2D plus board

R2D plus is SH reference board used with SH7751R.
This board has 266Mhz CPU, 64MB SDRAM, Cardbus, CF interface,
one PCI bus, VGA, and two Ethernet controller.

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

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 */