Hi Lei Wen,
On 31 July 2011 12:26, Lei Wen adrian.wenl@gmail.com wrote:
Hi Chander,
On Fri, Jul 29, 2011 at 12:41 PM, Chander Kashyap chander.kashyap@linaro.org wrote:
Adds mmc boot support.
Signed-off-by: Chander Kashyap chander.kashyap@linaro.org
mmc_spl/board/samsung/origen/Makefile | 106
++++++++++++++++
mmc_spl/board/samsung/origen/mmc_boot.c | 57 +++++++++ mmc_spl/board/samsung/origen/tools/mkv310_image.c | 140
+++++++++++++++++++++
mmc_spl/board/samsung/origen/u-boot.lds | 88 +++++++++++++ 4 files changed, 391 insertions(+), 0 deletions(-) create mode 100644 mmc_spl/board/samsung/origen/Makefile create mode 100644 mmc_spl/board/samsung/origen/mmc_boot.c create mode 100644 mmc_spl/board/samsung/origen/tools/mkv310_image.c create mode 100644 mmc_spl/board/samsung/origen/u-boot.lds
diff --git a/mmc_spl/board/samsung/origen/Makefile
b/mmc_spl/board/samsung/origen/Makefile
new file mode 100644 index 0000000..1d61cc0 --- /dev/null +++ b/mmc_spl/board/samsung/origen/Makefile @@ -0,0 +1,106 @@ +# +# (C) Copyright 2006-2007 +# Stefan Roese, DENX Software Engineering, sr@denx.de. +# +# (C) Copyright 2008 +# Guennadi Liakhovetki, DENX Software Engineering, lg@denx.de +# +# (C) Copyright 2011 +# Chander Kashyap, Samsung Electronics, k.chander@samsung.com +# +# 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 +#
+CONFIG_MMC_SPL = y
+include $(TOPDIR)/config.mk
+LDSCRIPT= $(TOPDIR)/mmc_spl/board/$(BOARDDIR)/u-boot.lds +LDFLAGS = -Bstatic -T $(mmcobj)u-boot.lds -Ttext
$(CONFIG_SYS_TEXT_BASE) $(PLATFORM_LDFLAGS)
+AFLAGS += -DCONFIG_MMC_SPL +AFLAGS += -DCONFIG_SPL_BUILD +CFLAGS += -DCONFIG_MMC_SPL +CFLAGS += -DCONFIG_SPL_BUILD
+SOBJS = start.o mem_setup.o lowlevel_init.o +COBJS = mmc_boot.o
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) +__OBJS := $(SOBJS) $(COBJS) +LNDIR := $(OBJTREE)/mmc_spl/board/$(BOARDDIR)
+mmcobj := $(OBJTREE)/mmc_spl/
+MKV310_MMC_SPL_EXEC = mkv310_mmc_spl_exec +MMC_SPL_BIN = u-boot-mmc-spl.bin
+ALL = $(mmcobj)u-boot-spl $(mmcobj)u-boot-spl.bin
$(mmcobj)$(MMC_SPL_BIN)
+all: $(obj).depend $(ALL)
+$(mmcobj)$(MMC_SPL_BIN): $(mmcobj)u-boot-spl.bin
tools/$(MKV310_MMC_SPL_EXEC)
./tools/$(MKV310_MMC_SPL_EXEC) $(mmcobj)u-boot-spl.bin$(mmcobj)$(MMC_SPL_BIN)
rm -f tools/$(MKV310_MMC_SPL_EXEC)+tools/$(MKV310_MMC_SPL_EXEC): tools/mkv310_image.c
$(HOSTCC) tools/mkv310_image.c -o tools/$(MKV310_MMC_SPL_EXEC)+$(mmcobj)u-boot-spl.bin: $(mmcobj)u-boot-spl
$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@+$(mmcobj)u-boot-spl: $(OBJS) $(mmcobj)u-boot.lds
cd $(LNDIR) && $(LD) $(LDFLAGS) $(__OBJS) \-Map $(mmcobj)u-boot-spl.map \-o $(mmcobj)u-boot-spl+$(mmcobj)u-boot.lds: $(LDSCRIPT)
$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@+# create symbolic links for common files
+# from cpu directory +start.S:
@rm -f $@@ln -s $(TOPDIR)/arch/arm/cpu/armv7/start.S $@+# from board directory +mem_setup.S:
@rm -f $@@ln -s $(TOPDIR)/board/samsung/origen/mem_setup.S $@+lowlevel_init.S:
@rm -f $@@ln -s $(TOPDIR)/board/samsung/origen/lowlevel_init.S $@+#########################################################################
+$(obj)%.o: %.S
$(CC) $(AFLAGS) -c -o $@ $<+$(obj)%.o: %.c
$(CC) $(CFLAGS) -c -o $@ $<+# defines $(obj).depend target +include $(SRCTREE)/rules.mk
+sinclude $(obj).depend
+#########################################################################
diff --git a/mmc_spl/board/samsung/origen/mmc_boot.c
b/mmc_spl/board/samsung/origen/mmc_boot.c
new file mode 100644 index 0000000..d9b44d8 --- /dev/null +++ b/mmc_spl/board/samsung/origen/mmc_boot.c @@ -0,0 +1,57 @@ +/*
- Copyright (C) 2011 Samsung Electronics
- 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<config.h>
+typedef u32(*copy_sd_mmc_to_mem) \
(u32 start_block, u32 block_count, u32 *dest_addr);+void copy_uboot_to_ram(void) +{
copy_sd_mmc_to_mem copy_bl2 = (copy_sd_mmc_to_mem)*(u32*)(0x02020030);
copy_bl2(BL2_START_OFFSET,\BL2_SIZE_BLOC_COUNT, (u32 *)CONFIG_SYS_TEXT_BASE);+}
Curious to know, what the 0x02020030 hardcoding number means here? It is a pointer to a API or hardware register, or anything else, how this simple function perform the data transfer from mmc to ram?
0x02020030 is iROM address, which contains pointer to API (copy from mmc
from DDR) in iROM.
Best regards,
Lei