> +# 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)
please use $(obj).depend
> +
> +$(LIB): $(OBJS)
> + $(AR) crv $@ $(OBJS)
please replace crv by $(ARFLAGS)
> +
> +#########################################################################
> +
> +.depend: Makefile $(START:.o=.S) $(OBJS:.o=.c)
> + $(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
> +
> +sinclude .depend
please replace with
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
> +
> +#########################################################################
> diff --git a/cpu/sh2/cache.c b/cpu/sh2/cache.c
> new file mode 100644
> index 0000000..d7ac2a5
> --- /dev/null
> +++ b/cpu/sh2/cache.c
> @@ -0,0 +1,112 @@
> +/*
> + * (C) Copyright 2007
> + * Yoshihiro Shimoda <[EMAIL PROTECTED]>
> + *
> + * Copyright (C) 2007, 2008 Nobobuhiro Iwamatsu <[EMAIL PROTECTED]>
> + * 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)
> +
please use tab instead of space
> +/*
> + * 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)
please use tab instead of space
> +
> +#define CACHE_VALID 1
^^^^^^^
> +#define CACHE_UPDATED 2
^^^^^
whitespace
> +
> +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
^^^^^
whitespace
> +
> +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;
> +}
> diff --git a/cpu/sh2/config.mk b/cpu/sh2/config.mk
> new file mode 100644
> index 0000000..c2703fe
> --- /dev/null
> +++ b/cpu/sh2/config.mk
> @@ -0,0 +1,29 @@
> +#
> +# (C) Copyright 2007-2008
> +# Nobuhiro Iwamatsu <[EMAIL PROTECTED]>
> +#
> +# 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
> +#
> +#
> +#export CFLAGS = -m3e -mb
> +#export LDFLAGS = -m3e -mb -Wl,-EB -Wl,-elf2flt=-s65536
if no need please remove
> +
> +PLATFORM_CPPFLAGS += -m3e -mb
> +PLATFORM_RELFLAGS += -ffixed-r13
> +PLATFORM_LDFLAGS += -EB
> diff --git a/cpu/sh2/cpu.c b/cpu/sh2/cpu.c
> new file mode 100644
> index 0000000..e0cb047
> --- /dev/null
> +++ b/cpu/sh2/cpu.c
> @@ -0,0 +1,98 @@
> +/*
> + * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <[EMAIL PROTECTED]>
> + * 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
^^^^^^
whitespace
> +#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 disable_interrupts(void)
> +{
> + return 0;
> +}
> diff --git a/cpu/sh2/start.S b/cpu/sh2/start.S
> new file mode 100644
> index 0000000..969fe00
> --- /dev/null
> +++ b/cpu/sh2/start.S
> @@ -0,0 +1,84 @@
> +/*
> + * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <[EMAIL PROTECTED]>
> + * 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:
> +#if 1
if always 1 please remove the if/endif
> + .long 0x00000010 /* Ppower ON reset PC*/
> + .long 0x00000000
> + .long 0x00000010 /* Manual reset PC */
> + .long 0x00000000
> +#endif
> +_init:
> + mov.l ._lowlevel_init, r0
> +100: bsrf r0
> + nop
> + bsr 1f
> + nop
> +1: sts pr, r5
> + mov.l ._reloc_dst, r4
> +#if 1
> + add #(_start-1b), r5
> +#else
> + mov #16, r5
> +#endif
please use a CFG_ instead or remove
> + 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
> +{
> + while (1)
> + ;
> +}
> + * 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
^^^^
whitespace
> +
> +#define CACHE_OC_ADDRESS_ARRAY 0xf0000000
> +#define CACHE_OC_WAY_SHIFT 13
> +#define CACHE_OC_NUM_ENTRIES 256
> +#define CACHE_OC_ENTRY_SHIFT 4
> +
> +# error "Unknown SH2 variant"
> +
Best Regards,
J.
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