sh: Add support Renesas sh7722 processor and Hitachi MS7722SE01 board

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

1 files changed, 296 insertions, 0 deletions

diff --git a/board/ms7722se/lowlevel_init.S b/board/ms7722se/lowlevel_init.S
new file mode 100644
index 0000000..e0d519c
--- /dev/null
+++ b/board/ms7722se/lowlevel_init.S
@@ -0,0 +1,296 @@
+/*
+ * 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