[U-Boot-Users] [PATCH 2/8] [SH] SuperH support

@@ -0,0 +1,39 @@
+/*
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <common.h>
+
+int interrupt_init (void)
+{
+	return 0; 
+}
+
+void enable_interrupts (void)
+{
+
+}
+
+int disable_interrupts (void){ 
+	return 0; 
+}
+

@@ -0,0 +1,75 @@
+/*
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * 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>
+
+	.text
+	.align	2
+
+	.global	_start
+_start:
+	mov.l	._lowlevel_init, r0
+100:	bsrf	r0
+	nop
+
+	bsr	1f
+	nop
+1:	sts	pr, r5
+	mov.l	._reloc_dst, r4	
+	add	#(_start-1b), r5	
+	mov.l	._reloc_dst_end, r6	
+
+2:	mov.l	@r5+, r1
+	mov.l	r1, @r4
+	add	#4, r4
+	cmp/hs	r6, r4
+	bf	2b
+	
+	mov.l	._bss_start, r4	
+	mov.l	._bss_end, r5		
+	mov	#0, r1
+
+3:	mov.l	r1, @r4			/* bss clear */	
+	add	#4, r4
+	cmp/hs	r5, r4
+	bf	3b
+
+	mov.l	._gd_init, r13		/* global data */
+	mov.l	._stack_init, r15	/* stack */
+
+	mov.l	._sh_generic_init, r0
+	jsr	@r0			
+	nop				
+
+loop:
+	bra	loop
+
+	.align	2
+
+._lowlevel_init:	.long	(lowlevel_init - (100b + 4))
+._reloc_dst:		.long	reloc_dst
+._reloc_dst_end:	.long	reloc_dst_end
+._bss_start:		.long	bss_start
+._bss_end:		.long	bss_end
+._gd_init:		.long	(_start - CFG_GBL_DATA_SIZE)
+._stack_init:		.long	(_start - CFG_GBL_DATA_SIZE - CFG_MALLOC_LEN - 16)
+._sh_generic_init:	.long	sh_generic_init
+

@@ -0,0 +1,94 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <common.h>
+#include <asm/processor.h>
+
+#define TMU_MAX_COUNTER (~0UL)
+
+static void tmu_timer_start (unsigned int timer)
+{
+	if (timer > 2)
+		return;
+
+	*((volatile unsigned char *) TSTR0) |= (1 << timer);
+}
+
+int timer_init (void)
+{
+	/* Divide clock by 4 */
+	*(volatile u16 *)TCR0 = 0;
+
+	tmu_timer_start (0);
+	return 0;
+}
+
+/*
+   In theory we should return a true 64bit value (ie something that doesn't
+   overflow). However, we don't. Therefore if TMU runs@fastest rate of
+   6.75 MHz this value will wrap after u-boot has been running for approx
+   10 minutes.
+*/
+unsigned long long get_ticks (void)
+{
+	return (0 - *((volatile unsigned int *) TCNT0));
+}
+
+unsigned long get_timer (unsigned long base)
+{
+	unsigned long n = 
+		*((volatile unsigned int *)TCNT0) ;
+	
+	return ((int)n - base ) < 0 ? ( TMU_MAX_COUNTER - ( base -n )):(n - base );
+}
+
+void set_timer (unsigned long t)
+{
+	*((volatile unsigned int *) TCNT0) = (0 - t);
+}
+
+void reset_timer (void)
+{
+	set_timer (0);
+}
+
+void udelay (unsigned long usec)
+{
+	unsigned int start = get_timer (0);
+	unsigned int end = 0;
+	if (usec > 1000000)
+		end = ((usec/100000) * CFG_HZ) / 10;
+	else if (usec > 1000)
+		end = ((usec/100) * CFG_HZ) / 10000;
+	else
+		end = (usec * CFG_HZ) / 1000000;
+
+	while (get_timer (0) < end)
+		continue;
+}
+
+unsigned long get_tbclk (void)
+{
+	return CFG_HZ;
+}
+