Add support SH2/SH2A basic function.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
--- /dev/null
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+# Copyright (C) 2008 Renesas Solutions Corp.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(CPU).a
+
+START = start.o
+OBJS = cpu.o interrupts.o watchdog.o time.o # cache.o
+
+all: .depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
--- /dev/null
+/*
+ * (C) Copyright 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * Copyright (C) 2007, 2008 Nobobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * 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 <command.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+/*
+ * Jump to P2 area.
+ * When handling TLB or caches, we need to do it from P2 area.
+ */
+#define jump_to_P2() \
+do { \
+ unsigned long __dummy; \
+ __asm__ __volatile__( \
+ "mov.l 1f, %0\n\t" \
+ "or %1, %0\n\t" \
+ "jmp @%0\n\t" \
+ " nop\n\t" \
+ ".balign 4\n" \
+ "1: .long 2f\n" \
+ "2:" \
+ : "=&r" (__dummy) \
+ : "r" (0x20000000)); \
+} while (0)
+
+/*
+ * Back to P1 area.
+ */
+#define back_to_P1() \
+do { \
+ unsigned long __dummy; \
+ __asm__ __volatile__( \
+ "nop;nop;nop;nop;nop;nop;nop\n\t" \
+ "mov.l 1f, %0\n\t" \
+ "jmp @%0\n\t" \
+ " nop\n\t" \
+ ".balign 4\n" \
+ "1: .long 2f\n" \
+ "2:" \
+ : "=&r" (__dummy)); \
+} while (0)
+
+#define CACHE_VALID 1
+#define CACHE_UPDATED 2
+
+static inline void cache_wback_all(void)
+{
+ unsigned long addr, data, i, j;
+
+ jump_to_P2();
+ for (i = 0; i < CACHE_OC_NUM_ENTRIES; i++) {
+ for (j = 0; j < CACHE_OC_NUM_WAYS; j++) {
+ addr = CACHE_OC_ADDRESS_ARRAY
+ | (j << CACHE_OC_WAY_SHIFT)
+ | (i << CACHE_OC_ENTRY_SHIFT);
+ data = inl(addr);
+ if (data & CACHE_UPDATED) {
+ data &= ~CACHE_UPDATED;
+ outl(data, addr);
+ }
+ }
+ }
+ back_to_P1();
+}
+
+
+#define CACHE_ENABLE 0
+#define CACHE_DISABLE 1
+
+int cache_control(unsigned int cmd)
+{
+ unsigned long ccr;
+
+ jump_to_P2();
+ ccr = inl(CCR);
+
+ if (ccr & CCR_CACHE_ENABLE)
+ cache_wback_all();
+
+ if (cmd == CACHE_DISABLE)
+ outl(CCR_CACHE_STOP, CCR);
+ else
+ outl(CCR_CACHE_INIT, CCR);
+ back_to_P1();
+
+ return 0;
+}
--- /dev/null
+#
+# (C) Copyright 2007-2008
+# 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
+#
+#
+PLATFORM_CPPFLAGS += -m3e -mb
+PLATFORM_RELFLAGS += -ffixed-r13
+PLATFORM_LDFLAGS += -EB
--- /dev/null
+/*
+ * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * 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 <command.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#define STBCR4 0xFFFE040C
+#define cmt_clock_enable() do {\
+ writeb(readb(STBCR4) & ~0x04, STBCR4);\
+ } while (0)
+#define scif0_enable() do {\
+ writeb(readb(STBCR4) & ~0x80, STBCR4);\
+ } while (0)
+
+int checkcpu(void)
+{
+#if defined(CONFIG_SH2A)
+ puts("CPU: SH2A\n");
+#else
+ puts("CPU: SH2\n");
+#endif
+ return 0;
+}
+
+int cpu_init(void)
+{
+ /* SCIF enable */
+ scif0_enable();
+ /* CMT clock enable */
+ cmt_clock_enable() ;
+ return 0;
+}
+
+int cleanup_before_linux(void)
+{
+ disable_interrupts();
+ return 0;
+}
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+ disable_interrupts();
+ reset_cpu(0);
+ return 0;
+}
+
+void flush_cache(unsigned long addr, unsigned long size)
+{
+
+}
+
+void icache_enable(void)
+{
+}
+
+void icache_disable(void)
+{
+}
+
+int icache_status(void)
+{
+ return 0;
+}
+
+void dcache_enable(void)
+{
+}
+
+void dcache_disable(void)
+{
+}
+
+int dcache_status(void)
+{
+ return 0;
+}
--- /dev/null
+/*
+ * Copyright 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * 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;
+}
--- /dev/null
+/*
+ * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+
+ * 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:
+ .long 0x00000010 /* Ppower ON reset PC*/
+ .long 0x00000000
+ .long 0x00000010 /* Manual reset PC */
+ .long 0x00000000
+_init:
+ 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
--- /dev/null
+/*
+ * Copyright (C) 2007,2008 Nobobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@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/io.h>
+#include <asm/processor.h>
+
+#define CMT_CMCSR_INIT 0x0001 /* PCLK/32 */
+#define CMT_CMCSR_CALIB 0x0000
+#define CMT_MAX_COUNTER (0xFFFFFFFF)
+#define CMT_TIMER_RESET (0xFFFF)
+
+static vu_long cmt0_timer;
+
+static void cmt_timer_start(unsigned int timer)
+{
+ writew(readw(CMSTR) | 0x01, CMSTR);
+}
+
+static void cmt_timer_stop(unsigned int timer)
+{
+ writew(readw(CMSTR) & ~0x01, CMSTR);
+}
+
+int timer_init(void)
+{
+ cmt0_timer = 0;
+ /* Divide clock by 32 */
+ readw(CMCSR_0);
+ writew(CMT_CMCSR_INIT, CMCSR_0);
+
+ /* User Device 0 only */
+ cmt_timer_stop(0);
+ set_timer(CMT_TIMER_RESET);
+ cmt_timer_start(0);
+
+ return 0;
+}
+
+unsigned long long get_ticks(void)
+{
+ return cmt0_timer;
+}
+
+static vu_long cmcnt;
+ulong get_timer(ulong base)
+{
+ ulong data = readw(CMCNT_0);
+
+ if (data >= cmcnt)
+ cmcnt = data - cmcnt;
+ else
+ cmcnt = (CMT_TIMER_RESET - cmcnt) + data;
+
+ if ((cmt0_timer + cmcnt) > CMT_MAX_COUNTER)
+ cmt0_timer = ((cmt0_timer + cmcnt) - CMT_MAX_COUNTER);
+ else
+ cmt0_timer += cmcnt;
+
+ cmcnt = data;
+ return cmt0_timer - base;
+}
+
+void set_timer(ulong t)
+{
+ writew((u16) t, CMCOR_0);
+}
+
+void reset_timer(void)
+{
+ cmt_timer_stop(0);
+ set_timer(CMT_TIMER_RESET);
+ cmt0_timer = 0;
+ cmt_timer_start(0);
+}
+
+void udelay(unsigned long usec)
+{
+ unsigned int start = get_timer(0);
+
+ while (get_timer((ulong) start) < (usec * (CFG_HZ / 1000000)))
+ continue;
+}
+
+unsigned long get_tbclk(void)
+{
+ return CFG_HZ;
+}
--- /dev/null
+/*
+ * Copyright (C) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhoro@renesas.com>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * 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>
+
+int watchdog_init(void)
+{
+ return 0;
+}
+
+void reset_cpu(unsigned long ignored)
+{
+ while (1)
+ ;
+}
ifeq ($(ARCH),sh)
LOAD_ADDR = 0x8C000000
+ifeq ($(CPU),sh2)
+BIG_ENDIAN=y
+endif
endif
ifeq ($(ARCH),sparc)
--- /dev/null
+/*
+ * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * 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
+ */
+
+#ifndef _ASM_CPU_SH2_H_
+#define _ASM_CPU_SH2_H_
+
+/* cache control */
+#define CCR_CACHE_STOP 0x00000008
+#define CCR_CACHE_ENABLE 0x00000005
+#define CCR_CACHE_ICI 0x00000008
+
+#define CACHE_OC_ADDRESS_ARRAY 0xf0000000
+#define CACHE_OC_WAY_SHIFT 13
+#define CACHE_OC_NUM_ENTRIES 256
+#define CACHE_OC_ENTRY_SHIFT 4
+
+#if defined(CONFIG_CPU_SH7203)
+# include <asm/cpu_sh7203.h>
+#else
+# error "Unknown SH2 variant"
+#endif
+
+#endif /* _ASM_CPU_SH2_H_ */
#ifndef _ASM_SH_PROCESSOR_H_
#define _ASM_SH_PROCESSOR_H_
-#if defined CONFIG_SH3
+#if defined(CONFIG_SH2) || \
+ defined (CONFIG_SH2A)
+# include <asm/cpu_sh2.h>
+#elif defined (CONFIG_SH3)
# include <asm/cpu_sh3.h>
#elif defined (CONFIG_SH4) || \
defined (CONFIG_SH4A)
projects / oweals / u-boot.git / commitdiff