From: Luigi 'Comio' Mantellini <luigi.mantell...@idf-hit.com>
The following symbols are allowed:
CONFIG_BOOTSTRAP
Enable the bootstrap stage. A minimal code is added to uncompress or
copy
the payload (a full U-Boot image).
CONFIG_BOOTSTRAP_TEXT_BASE
TEXT_BASE of the bootstrap code.
CONFIG_BOOTSTRAP_SKIP_LOWLEVEL_INIT
Skip the lowlevel initialization.
CONFIG_BOOTSTRAP_BAUDRATE
Initial and hardcoded serial boudrate
CONFIG_BOOTSTRAP_BZIP2
Enable BZIP2 compression of the U-Boot image.
CONFIG_BOOTSTRAP_GZIP
Enable GZIP compression of the U-Boot image.
CONFIG_BOOTSTRAP_LZMA
Enable LZMA compression of the U-Boot image.
CONFIG_BOOTSTRAP_LZO
Enable LZO compression of the U-Boot image.
The board should define the following functions:
phys_size_t bootstrap_initdram(int board_type);
int bootstrap_checkboard(void);
int bootstrap_misc_init_r(void);
void lowlevel_init(void);
Signed-off-by: Luigi 'Comio' Mantellini <luigi.mantell...@idf-hit.com>
---
.gitignore | 24 ++-
Makefile | 172 +++++++++++++++-
arch/mips/config.mk | 2 +-
arch/mips/cpu/Makefile | 28 ++-
arch/mips/cpu/cpu.c | 12 -
arch/mips/cpu/reset.c | 39 ++++
arch/mips/cpu/reset_bootstrap.c | 39 ++++
arch/mips/cpu/start_bootstrap.S | 452 +++++++++++++++++++++++++++++++++++++++
arch/mips/lib/Makefile | 15 ++-
arch/mips/lib/board_bootstrap.c | 261 ++++++++++++++++++++++
common/Makefile | 15 ++-
common/console_bootstrap.c | 85 ++++++++
config.mk | 19 ++-
include/common.h | 21 ++
lib/Makefile | 28 +++-
lib/bootstrap.c | 89 ++++++++
lib/lzma/Makefile | 4 +-
lib/lzo/Makefile | 4 +-
18 files changed, 1281 insertions(+), 28 deletions(-)
create mode 100644 arch/mips/cpu/reset.c
create mode 100644 arch/mips/cpu/reset_bootstrap.c
create mode 100644 arch/mips/cpu/start_bootstrap.S
create mode 100644 arch/mips/lib/board_bootstrap.c
create mode 100644 common/console_bootstrap.c
create mode 100644 lib/bootstrap.c
diff --git a/.gitignore b/.gitignore
index e71f6ac..9cfba4c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,11 @@
/u-boot.hex
/u-boot.map
/u-boot.bin
+/u-boot.bin.bz2
+/u-boot.bin.gz
+/u-boot.bin.lzma
+/u-boot.bin.lzo
+/u-boot.dis
/u-boot.srec
/u-boot.ldr
/u-boot.ldr.hex
@@ -30,6 +35,20 @@
/u-boot.lds
/u-boot-onenand.bin
/u-boot-flexonenand.bin
+/u-boot-bootstrap
+/u-boot-bootstrap.hex
+/u-boot-bootstrap.map
+/u-boot-bootstrap.bin
+/u-boot-bootstrap.bin.bz2
+/u-boot-bootstrap.bin.gz
+/u-boot-bootstrap.bin.lzma
+/u-boot-bootstrap.bin.lzo
+/u-boot-bootstrap.dis
+/u-boot-bootstrap.srec
+/u-boot-bootstrap.ldr
+/u-boot-bootstrap.ldr.hex
+/u-boot-bootstrap.ldr.srec
+/u-boot-bootstrap.lds
#
# Generated files
@@ -39,7 +58,7 @@
/LOG
/errlog
/reloc_off
-
+/.payload.s
/include/generated/
/lib/asm-offsets.s
@@ -66,3 +85,6 @@ cscope.*
/onenand_ipl/onenand-ipl*
/onenand_ipl/board/*/onenand*
/onenand_ipl/board/*/*.S
+examples/standalone/
+
+setvars
diff --git a/Makefile b/Makefile
index 87a383d..fa159c7 100644
--- a/Makefile
+++ b/Makefile
@@ -180,6 +180,13 @@ endif
OBJS := $(addprefix $(obj),$(OBJS))
+ifeq ($(CONFIG_BOOTSTRAP),y)
+BOOTSTRAP_OBJS = $(CPUDIR)/start_bootstrap.o
+
+BOOTSTRAP_OBJS := $(addprefix $(obj),$(BOOTSTRAP_OBJS))
+endif
+
+
LIBS = lib/libgeneric.o
LIBS += lib/lzma/liblzma.o
LIBS += lib/lzo/liblzo.o
@@ -263,12 +270,29 @@ ifeq ($(SOC),s5pc2xx)
LIBS += $(CPUDIR)/s5p-common/libs5p-common.o
endif
-LIBS := $(addprefix $(obj),$(sort $(LIBS)))
+LIBS := $(addprefix $(obj),$(LIBS))
.PHONY : $(LIBS) $(TIMESTAMP_FILE) $(VERSION_FILE)
LIBBOARD = board/$(BOARDDIR)/lib$(BOARD).o
LIBBOARD := $(addprefix $(obj),$(LIBBOARD))
+ifeq ($(CONFIG_BOOTSTRAP),y)
+BOOTSTRAP_LIBS = lib/libgeneric_bootstrap.o
+BOOTSTRAP_LIBS += arch/$(ARCH)/cpu/lib$(ARCH)_bootstrap.o
+BOOTSTRAP_LIBS += arch/$(ARCH)/lib/lib$(ARCH)_bootstrap.o
+BOOTSTRAP_LIBS += common/libcommon_bootstrap.o
+BOOTSTRAP_LIBS += drivers/serial/libserial.o
+
+BOOTSTRAP_LIBS-$(CONFIG_BOOTSTRAP_LZMA) += lib/lzma/liblzma.o
+BOOTSTRAP_LIBS-$(CONFIG_BOOTSTRAP_LZO) += lib/lzo/liblzo.o
+BOOTSTRAP_LIBS += $(BOOTSTRAP_LIBS-y)
+
+.PHONY : $(BOOTSTRAP_LIBS)
+
+BOOTSTRAP_LIBBOARD = board/$(BOARDDIR)/lib$(BOARD)_bootstrap.o
+BOOTSTRAP_LIBBOARD := $(addprefix $(obj),$(BOOTSTRAP_LIBBOARD))
+endif
+
# Add GCC lib
ifdef USE_PRIVATE_LIBGCC
ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
@@ -282,6 +306,9 @@ endif
PLATFORM_LIBS += $(PLATFORM_LIBGCC)
export PLATFORM_LIBS
+BOOTSTRAP_PLATFORM_LIBS += $(PLATFORM_LIBGCC)
+export BOOTSTRAP_PLATFORM_LIBS
+
# Special flags for CPP when processing the linker script.
# Pass the version down so we can handle backwards compatibility
# on the fly.
@@ -304,6 +331,9 @@ endif
__OBJS := $(subst $(obj),,$(OBJS))
__LIBS := $(subst $(obj),,$(LIBS)) $(subst $(obj),,$(LIBBOARD))
+__BOOTSTRAP_OBJS := $(subst $(obj),,$(BOOTSTRAP_OBJS))
+__BOOTSTRAP_LIBS := $(subst $(obj),,$(BOOTSTRAP_LIBS)) $(subst
$(obj),,$(BOOTSTRAP_LIBBOARD))
+
#########################################################################
#########################################################################
@@ -325,6 +355,10 @@ endif
# Always append ALL so that arch config.mk's can add custom ones
ALL += $(obj)u-boot.srec $(obj)u-boot.bin $(obj)System.map $(U_BOOT_NAND)
$(U_BOOT_ONENAND)
+ifeq ($(CONFIG_BOOTSTRAP),y)
+ALL += $(obj)u-boot-bootstrap.srec $(obj)u-boot-bootstrap.bin
+endif
+
all: $(ALL)
$(obj)u-boot.hex: $(obj)u-boot
@@ -337,6 +371,18 @@ $(obj)u-boot.bin: $(obj)u-boot
$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
$(BOARD_SIZE_CHECK)
+$(obj)u-boot.bin.gz: $(obj)u-boot.bin
+ gzip -c $< > $@
+
+$(obj)u-boot.bin.lzma: $(obj)u-boot.bin
+ lzma -e -z -c $< > $@
+
+$(obj)u-boot.bin.lzo: $(obj)u-boot.bin
+ lzop -9 -c $< > $@
+
+$(obj)u-boot.bin.bz2: $(obj)u-boot.bin
+ bzip2 --best -z -c $< > $@
+
$(obj)u-boot.ldr: $(obj)u-boot
$(CREATE_LDR_ENV)
$(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
@@ -367,12 +413,12 @@ $(obj)u-boot.sha1: $(obj)u-boot.bin
$(obj)tools/ubsha1 $(obj)u-boot.bin
$(obj)u-boot.dis: $(obj)u-boot
- $(OBJDUMP) -d $< > $@
+ $(OBJDUMP) -S -d $< > $@
GEN_UBOOT = \
UNDEF_SYM=`$(OBJDUMP) -x $(LIBBOARD) $(LIBS) | \
sed -n -e
's/.*\($(SYM_PREFIX)__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
- cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \
+ cd $(LNDIR) && $(LD) --gc-sections $(LDFLAGS) $$UNDEF_SYM
$(__OBJS) \
--start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
-Map u-boot.map -o u-boot
$(obj)u-boot: depend \
@@ -395,6 +441,116 @@ $(LIBS): depend $(SUBDIRS)
$(LIBBOARD): depend $(LIBS)
$(MAKE) -C $(dir $(subst $(obj),,$@))
+# Bootstrap targets
+
+ifeq ($(CONFIG_BOOTSTRAP),y)
+$(obj)u-boot-bootstrap.hex: $(obj)u-boot-bootstrap
+ $(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@
+
+$(obj)u-boot-bootstrap.srec: $(obj)u-boot-bootstrap
+ $(OBJCOPY) -O srec $< $@
+
+$(obj)u-boot-bootstrap.bin: $(obj)u-boot-bootstrap
+ $(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
+ $(BOARD_SIZE_CHECK)
+
+$(obj)u-boot-bootstrap.bin.gz: $(obj)u-boot-bootstrap.bin
+ gzip -c $< > $@
+
+$(obj)u-boot-bootstrap.bin.lzma: $(obj)u-boot-bootstrap.bin
+ lzma -e -z -c $< > $@
+
+$(obj)u-boot.bin-bootstrap.lzo: $(obj)u-boot-bootstrap.bin
+ lzop -9 -c $< > $@
+
+$(obj)u-boot.bin-bootstrap.bz2: $(obj)u-boot-bootstrap.bin
+ bzip2 --best -z -c $< > $@
+
+$(obj)u-boot-bootstrap.ldr: $(obj)u-boot-bootstrap
+ $(CREATE_LDR_ENV)
+ $(LDR) -T $(CONFIG_BFIN_CPU) -c $@ $< $(LDR_FLAGS)
+ $(BOARD_SIZE_CHECK)
+
+$(obj)u-boot-bootstrap.ldr.hex: $(obj)u-boot-bootstrap.ldr
+ $(OBJCOPY) ${OBJCFLAGS} -O ihex $< $@ -I binary
+
+$(obj)u-boot-bootstrap.ldr.srec: $(obj)u-boot-bootstrap.ldr
+ $(OBJCOPY) ${OBJCFLAGS} -O srec $< $@ -I binary
+
+$(obj)u-boot-bootstrap.img: $(obj)u-boot-bootstrap.bin
+ $(obj)tools/mkimage -A $(ARCH) -T firmware -C none \
+ -a $(CONFIG_BOOTSTRAP_BASE) -e 0 \
+ -n $(shell sed -n -e 's/.*U_BOOT_VERSION//p' $(VERSION_FILE) | \
+ sed -e 's/"[ ]*$$/ for $(BOARD) board"/') \
+ -d $< $@
+
+$(obj)u-boot-bootstrap.imx: $(obj)u-boot-bootstrap.bin
+ $(obj)tools/mkimage -n $(IMX_CONFIG) -T imximage \
+ -e $(CONFIG_BOOTSTRAP_BASE) -d $< $@
+
+$(obj)u-boot-bootstrap.kwb: $(obj)u-boot-bootstrap.bin
+ $(obj)tools/mkimage -n $(CONFIG_SYS_KWD_CONFIG) -T kwbimage \
+ -a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_TEXT_BASE) -d $< $@
+
+$(obj)u-boot-bootstrap.sha1: $(obj)u-boot-bootstrap.bin
+ $(obj)tools/ubsha1 $(obj)u-boot-bootstrap.bin
+
+$(obj)u-boot-bootstrap.dis: $(obj)u-boot-bootstrap
+ $(OBJDUMP) -S -d $< > $@
+
+PAYLOAD_FILE_BASE=$(obj)u-boot.bin
+ifeq ($(CONFIG_BOOTSTRAP_GZIP),y)
+PAYLOAD_FILE_EXT:=.gz
+endif
+ifeq ($(CONFIG_BOOTSTRAP_LZMA),y)
+PAYLOAD_FILE_EXT:=.lzma
+endif
+ifeq ($(CONFIG_BOOTSTRAP_LZO),y)
+PAYLOAD_FILE_EXT:=.lzo
+endif
+ifeq ($(CONFIG_BOOTSTRAP_BZIP2),y)
+PAYLOAD_FILE_EXT:=.bz2
+endif
+
+PAYLOAD_FILE := $(PAYLOAD_FILE_BASE)$(PAYLOAD_FILE_EXT)
+
+$(obj).payload.s: $(PAYLOAD_FILE)
+ echo ".globl payload_start" > $@
+ echo ".globl payload_end" >> $@
+ echo ".globl payload_size" >> $@
+ echo ".globl payload_uncsize" >> $@
+ echo .section .payload,\"a\",@progbits >> $@
+ echo "payload_size:" >> $@
+ echo -n ".word " >> $@
+ wc -c $(PAYLOAD_FILE) | cut -f1 -d' ' >> $@
+ echo "payload_uncsize:" >> $@
+ echo -n ".word " >> $@
+ wc -c $(obj)u-boot.bin | cut -f1 -d' ' >> $@
+ echo "payload_start:" >> $@
+ echo .incbin \"$(PAYLOAD_FILE)\" >> $@
+ echo "payload_end:" >> $@
+
+
+GEN_UBOOT_BOOTSTRAP = \
+ UNDEF_SYM=`$(OBJDUMP) -x $(BOOTSTRAP_LIBBOARD)
$(BOOTSTRAP_LIBS) | \
+ sed -n -e
's/.*\($(SYM_PREFIX)__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
+ cd $(LNDIR) && $(LD) --gc-sections $(BOOTSTRAP_LDFLAGS)
$$UNDEF_SYM $(obj).payload.o $(__BOOTSTRAP_OBJS) \
+ --start-group $(__BOOTSTRAP_LIBS) --end-group
$(BOOTSTRAP_PLATFORM_LIBS) \
+ -Map u-boot-bootstrap.map -o u-boot-bootstrap
+$(obj)u-boot-bootstrap: depend $(SUBDIRS) $(BOOTSTRAP_OBJS)
$(BOOTSTRAP_LIBBOARD) $(BOOTSTRAP_LIBS) $(BOOTSTRAP_LDSCRIPT)
$(obj)u-boot-bootstrap.lds $(obj).payload.o
+ $(GEN_UBOOT_BOOTSTRAP)
+ifeq ($(CONFIG_KALLSYMS),y)
+ smap=`$(call SYSTEM_MAP,u-boot-bootstrap) | \
+ awk '$$2 ~ /[tTwW]/ {printf $$1 $$3 "\\\\000"}'` ; \
+ $(CC) $(CFLAGS) -DSYSTEM_MAP="\"$${smap}\"" \
+ -c common/system_map.c -o $(obj)common/system_map.o
+ $(GEN_UBOOT_BOOTSTRAP) $(obj)common/system_map.o
+endif
+
+$(BOOTSTRAP_LIBBOARD): depend $(BOOTSTRAP_LIBS)
+ $(MAKE) -C $(dir $(subst $(obj),,$@)) $(notdir $@)
+endif
+
$(SUBDIRS): depend
$(MAKE) -C $@ all
@@ -404,6 +560,9 @@ $(LDSCRIPT): depend
$(obj)u-boot.lds: $(LDSCRIPT)
$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^
>$@
+$(obj)u-boot-bootstrap.lds: $(BOOTSTRAP_LDSCRIPT)
+ $(CPP) $(CPPFLAGS) $(BOOTSTRAP_LDPPFLAGS) -ansi -D__ASSEMBLY__
-P - <$^ >$@
+
$(NAND_SPL): $(TIMESTAMP_FILE) $(VERSION_FILE) depend
$(MAKE) -C nand_spl/board/$(BOARDDIR) all
@@ -1221,6 +1380,7 @@ clean:
$(obj)board/trab/trab_fkt $(obj)board/voiceblue/eeprom \
$(obj)board/armltd/{integratorap,integratorcp}/u-boot.lds \
$(obj)u-boot.lds \
+ $(obj)u-boot-bootstrap.lds \
$(obj)arch/blackfin/cpu/bootrom-asm-offsets.[chs]
@rm -f $(obj)include/bmp_logo.h
@rm -f $(obj)lib/asm-offsets.s
@@ -1244,6 +1404,12 @@ clobber: clean
@rm -f $(obj)u-boot $(obj)u-boot.map $(obj)u-boot.hex $(ALL)
@rm -f $(obj)u-boot.kwb
@rm -f $(obj)u-boot.imx
+ @rm -f $(obj)u-boot.bin{.gz,.lzma,.lzo,.bz2}
+ @rm -f $(obj)u-boot-bootstrap $(obj)u-boot-bootstrap.map
$(obj)u-boot-bootstrap.hex
+ @rm -f $(obj)u-boot-bootstrap.kwb
+ @rm -f $(obj)u-boot-bootstrap.imx
+ @rm -f $(obj)u-boot-bootstrap.bin{.gz,.lzma,.lzo,.bz2}
+ @rm -f $(obj).payload.s
@rm -f $(obj)tools/{env/crc32.c,inca-swap-bytes}
@rm -f $(obj)arch/powerpc/cpu/mpc824x/bedbug_603e.c
@rm -f $(obj)include/asm/proc $(obj)include/asm/arch $(obj)include/asm
diff --git a/arch/mips/config.mk b/arch/mips/config.mk
index aa06761..4655169 100644
--- a/arch/mips/config.mk
+++ b/arch/mips/config.mk
@@ -47,6 +47,6 @@ PLATFORM_CPPFLAGS += -DCONFIG_MIPS -D__MIPS__
# On the other hand, we want PIC in the U-Boot code to relocate it from ROM
# to RAM. $28 is always used as gp.
#
-PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic
+PLATFORM_CPPFLAGS += -G 0 -mabicalls -fpic -g
PLATFORM_CPPFLAGS += -msoft-float
PLATFORM_LDFLAGS += -G 0 -static -n -nostdlib
diff --git a/arch/mips/cpu/Makefile b/arch/mips/cpu/Makefile
index 06df8d1..6a9a2af 100644
--- a/arch/mips/cpu/Makefile
+++ b/arch/mips/cpu/Makefile
@@ -24,25 +24,45 @@
include $(TOPDIR)/config.mk
LIB = $(obj)lib$(CPU).o
+BOOTSTRAP_LIB = $(obj)lib$(CPU)_bootstrap.o
+
+BOOTSTRAP_LIB-$(CONFIG_BOOTSTRAP) = $(BOOTSTRAP_LIB)
START = start.o
SOBJS-y = cache.o
-COBJS-y = cpu.o interrupts.o
+COBJS-y = cpu.o reset.o interrupts.o
SOBJS-$(CONFIG_INCA_IP) += incaip_wdt.o
COBJS-$(CONFIG_INCA_IP) += asc_serial.o incaip_clock.o
+COBJS-$(CONFIG_IFX_ASC) += ifx_asc.o
COBJS-$(CONFIG_PURPLE) += asc_serial.o
COBJS-$(CONFIG_SOC_AU1X00) += au1x00_eth.o au1x00_serial.o au1x00_usb_ohci.o
-SRCS := $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+BOOTSTRAP_START = start_bootstrap.o
+BOOTSTRAP_START-$(CONFIG_BOOTSTRAP) += $(BOOTSTRAP_START)
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += cpu.o interrupts.o reset_bootstrap.o
+BOOTSTRAP_SOBJS-$(CONFIG_BOOTSTRAP) += cache.o
+BOOTSTRAP_COBJS-$(CONFIG_IFX_ASC) += ifx_asc.o
+
+BOOTSTRAP_OBJS := $(addprefix $(obj),$(BOOTSTRAP_SOBJS-y) $(BOOTSTRAP_COBJS-y))
+BOOTSTRAP_START := $(addprefix $(obj),$(BOOTSTRAP_START-y))
+
+SRCS := $(sort $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
$(BOOTSTRAP_START-y:.o=.S) $(BOOTSTRAP_SOBJS-y:.o=.S)
$(BOOTSTRAP_COBJS-y:.o=.c))
OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
START := $(addprefix $(obj),$(START))
-all: $(obj).depend $(START) $(LIB)
+all: $(START) $(LIB) $(BOOTSTRAP_START-y) $(BOOTSTRAP_LIB-y)
-$(LIB): $(OBJS)
+$(START): $(obj).depend
+
+$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
+$(BOOTSTRAP_START): $(obj).depend
+
+$(BOOTSTRAP_LIB): $(obj).depend $(BOOTSTRAP_OBJS)
+ $(call cmd_link_o_target, $(BOOTSTRAP_OBJS))
+
#########################################################################
# defines $(obj).depend target
diff --git a/arch/mips/cpu/cpu.c b/arch/mips/cpu/cpu.c
index 3ae397c..45bf07c 100644
--- a/arch/mips/cpu/cpu.c
+++ b/arch/mips/cpu/cpu.c
@@ -38,18 +38,6 @@
: \
: "i" (op), "R" (*(unsigned char *)(addr)))
-void __attribute__((weak)) _machine_restart(void)
-{
-}
-
-int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- _machine_restart();
-
- fprintf(stderr, "*** reset failed ***\n");
- return 0;
-}
-
void flush_cache(ulong start_addr, ulong size)
{
unsigned long lsize = CONFIG_SYS_CACHELINE_SIZE;
diff --git a/arch/mips/cpu/reset.c b/arch/mips/cpu/reset.c
new file mode 100644
index 0000000..397fb62
--- /dev/null
+++ b/arch/mips/cpu/reset.c
@@ -0,0 +1,39 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, <w...@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 <command.h>
+#include <asm/mipsregs.h>
+#include <asm/reboot.h>
+
+void __attribute__((weak)) _machine_restart(void)
+{
+}
+
+int __attribute__((weak)) do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char
* const argv[])
+{
+ _machine_restart();
+
+ fprintf(stderr, "*** reset failed ***\n");
+ return 0;
+}
diff --git a/arch/mips/cpu/reset_bootstrap.c b/arch/mips/cpu/reset_bootstrap.c
new file mode 100644
index 0000000..0bef625
--- /dev/null
+++ b/arch/mips/cpu/reset_bootstrap.c
@@ -0,0 +1,39 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, <w...@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 <command.h>
+#include <asm/mipsregs.h>
+#include <asm/reboot.h>
+
+void __attribute__((weak)) _machine_restart(void)
+{
+}
+
+int __attribute__((weak)) do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char
* const argv[])
+{
+ _machine_restart();
+
+ printf("*** reset failed ***\n");
+ return 0;
+}
diff --git a/arch/mips/cpu/start_bootstrap.S b/arch/mips/cpu/start_bootstrap.S
new file mode 100644
index 0000000..def1fde
--- /dev/null
+++ b/arch/mips/cpu/start_bootstrap.S
@@ -0,0 +1,452 @@
+/*
+ * Startup Code for MIPS32 CPU-core base on start.S source
+ *
+ * Copyright (c) 2010 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini <luigi.mantell...@idf-hit.com>
+ *
+ * Copyright (c) 2003 Wolfgang Denk <w...@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 <asm-offsets.h>
+#include <config.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+
+ /*
+ * For the moment disable interrupts, mark the kernel mode and
+ * set ST0_KX so that the CPU does not spit fire when using
+ * 64-bit addresses.
+ */
+ .macro setup_c0_status set clr
+ .set push
+ mfc0 t0, CP0_STATUS
+ or t0, ST0_CU0 | \set | 0x1f | \clr
+ xor t0, 0x1f | \clr
+ mtc0 t0, CP0_STATUS
+ .set noreorder
+ sll zero, 3 # ehb
+ .set pop
+ .endm
+
+ .macro setup_c0_status_reset
+#ifdef CONFIG_64BIT
+ setup_c0_status ST0_KX 0
+#else
+ setup_c0_status 0 0
+#endif
+ .endm
+
+#define RVECENT(f,n) \
+ b f; nop
+#define XVECENT(f,bev) \
+ b f ; \
+ li k0,bev
+
+ .set noreorder
+
+ .globl _start
+ .text
+_start:
+ RVECENT(reset,0) /* U-boot entry point */
+ RVECENT(reset,1) /* software reboot */
+#if defined(CONFIG_INCA_IP)
+ .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */
+ .word 0x00000000 /* phase of the flash */
+#elif defined(CONFIG_PURPLE)
+ .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */
+ .word INFINEON_EBU_BOOTCFG /* EBU init code, fetched during booting */
+#else
+ RVECENT(romReserved,2)
+#endif
+ RVECENT(romReserved,3)
+ RVECENT(romReserved,4)
+ RVECENT(romReserved,5)
+ RVECENT(romReserved,6)
+ RVECENT(romReserved,7)
+ RVECENT(romReserved,8)
+ RVECENT(romReserved,9)
+ RVECENT(romReserved,10)
+ RVECENT(romReserved,11)
+ RVECENT(romReserved,12)
+ RVECENT(romReserved,13)
+ RVECENT(romReserved,14)
+ RVECENT(romReserved,15)
+ RVECENT(romReserved,16)
+ RVECENT(romReserved,17)
+ RVECENT(romReserved,18)
+ RVECENT(romReserved,19)
+ RVECENT(romReserved,20)
+ RVECENT(romReserved,21)
+ RVECENT(romReserved,22)
+ RVECENT(romReserved,23)
+ RVECENT(romReserved,24)
+ RVECENT(romReserved,25)
+ RVECENT(romReserved,26)
+ RVECENT(romReserved,27)
+ RVECENT(romReserved,28)
+ RVECENT(romReserved,29)
+ RVECENT(romReserved,30)
+ RVECENT(romReserved,31)
+ RVECENT(romReserved,32)
+ RVECENT(romReserved,33)
+ RVECENT(romReserved,34)
+ RVECENT(romReserved,35)
+ RVECENT(romReserved,36)
+ RVECENT(romReserved,37)
+ RVECENT(romReserved,38)
+ RVECENT(romReserved,39)
+ RVECENT(romReserved,40)
+ RVECENT(romReserved,41)
+ RVECENT(romReserved,42)
+ RVECENT(romReserved,43)
+ RVECENT(romReserved,44)
+ RVECENT(romReserved,45)
+ RVECENT(romReserved,46)
+ RVECENT(romReserved,47)
+ RVECENT(romReserved,48)
+ RVECENT(romReserved,49)
+ RVECENT(romReserved,50)
+ RVECENT(romReserved,51)
+ RVECENT(romReserved,52)
+ RVECENT(romReserved,53)
+ RVECENT(romReserved,54)
+ RVECENT(romReserved,55)
+ RVECENT(romReserved,56)
+ RVECENT(romReserved,57)
+ RVECENT(romReserved,58)
+ RVECENT(romReserved,59)
+ RVECENT(romReserved,60)
+ RVECENT(romReserved,61)
+ RVECENT(romReserved,62)
+ RVECENT(romReserved,63)
+ XVECENT(romExcHandle,0x200) /* bfc00200: R4000 tlbmiss vector */
+ RVECENT(romReserved,65)
+ RVECENT(romReserved,66)
+ RVECENT(romReserved,67)
+ RVECENT(romReserved,68)
+ RVECENT(romReserved,69)
+ RVECENT(romReserved,70)
+ RVECENT(romReserved,71)
+ RVECENT(romReserved,72)
+ RVECENT(romReserved,73)
+ RVECENT(romReserved,74)
+ RVECENT(romReserved,75)
+ RVECENT(romReserved,76)
+ RVECENT(romReserved,77)
+ RVECENT(romReserved,78)
+ RVECENT(romReserved,79)
+ XVECENT(romExcHandle,0x280) /* bfc00280: R4000 xtlbmiss vector */
+ RVECENT(romReserved,81)
+ RVECENT(romReserved,82)
+ RVECENT(romReserved,83)
+ RVECENT(romReserved,84)
+ RVECENT(romReserved,85)
+ RVECENT(romReserved,86)
+ RVECENT(romReserved,87)
+ RVECENT(romReserved,88)
+ RVECENT(romReserved,89)
+ RVECENT(romReserved,90)
+ RVECENT(romReserved,91)
+ RVECENT(romReserved,92)
+ RVECENT(romReserved,93)
+ RVECENT(romReserved,94)
+ RVECENT(romReserved,95)
+ XVECENT(romExcHandle,0x300) /* bfc00300: R4000 cache vector */
+ RVECENT(romReserved,97)
+ RVECENT(romReserved,98)
+ RVECENT(romReserved,99)
+ RVECENT(romReserved,100)
+ RVECENT(romReserved,101)
+ RVECENT(romReserved,102)
+ RVECENT(romReserved,103)
+ RVECENT(romReserved,104)
+ RVECENT(romReserved,105)
+ RVECENT(romReserved,106)
+ RVECENT(romReserved,107)
+ RVECENT(romReserved,108)
+ RVECENT(romReserved,109)
+ RVECENT(romReserved,110)
+ RVECENT(romReserved,111)
+ XVECENT(romExcHandle,0x380) /* bfc00380: R4000 general vector */
+ RVECENT(romReserved,113)
+ RVECENT(romReserved,114)
+ RVECENT(romReserved,115)
+ RVECENT(romReserved,116)
+ RVECENT(romReserved,116)
+ RVECENT(romReserved,118)
+ RVECENT(romReserved,119)
+ RVECENT(romReserved,120)
+ RVECENT(romReserved,121)
+ RVECENT(romReserved,122)
+ RVECENT(romReserved,123)
+ RVECENT(romReserved,124)
+ RVECENT(romReserved,125)
+ RVECENT(romReserved,126)
+ RVECENT(romReserved,127)
+
+ /* We hope there are no more reserved vectors!
+ * 128 * 8 == 1024 == 0x400
+ * so this is address R_VEC+0x400 == 0xbfc00400
+ */
+#ifdef CONFIG_PURPLE
+/* 0xbfc00400 */
+ .word 0xdc870000
+ .word 0xfca70000
+ .word 0x20840008
+ .word 0x20a50008
+ .word 0x20c6ffff
+ .word 0x14c0fffa
+ .word 0x00000000
+ .word 0x03e00008
+ .word 0x00000000
+ .word 0x00000000
+/* 0xbfc00428 */
+ .word 0xdc870000
+ .word 0xfca70000
+ .word 0x20840008
+ .word 0x20a50008
+ .word 0x20c6ffff
+ .word 0x14c0fffa
+ .word 0x00000000
+ .word 0x03e00008
+ .word 0x00000000
+ .word 0x00000000
+#endif /* CONFIG_PURPLE */
+ .align 4
+reset:
+
+ /* Clear watch registers.
+ */
+ mtc0 zero, CP0_WATCHLO
+ mtc0 zero, CP0_WATCHHI
+
+ /* WP(Watch Pending), SW0/1 should be cleared. */
+ mtc0 zero, CP0_CAUSE
+
+ setup_c0_status_reset
+
+ /* Init Timer */
+ mtc0 zero, CP0_COUNT
+ mtc0 zero, CP0_COMPARE
+
+#if !defined(CONFIG_BOOTSTRAP_SKIP_LOWLEVEL_INIT)
+ /* CONFIG0 register */
+ li t0, CONF_CM_UNCACHED
+ mtc0 t0, CP0_CONFIG
+#endif /* !CONFIG_SKIP_LOWLEVEL_INIT */
+
+ /* Initialize $gp.
+ */
+ bal 1f
+ nop
+ .word _gp
+1:
+ lw gp, 0(ra)
+
+#if !defined(CONFIG_BOOTSTRAP_SKIP_LOWLEVEL_INIT)
+ /* Initialize any external memory.
+ */
+ la t9, lowlevel_init
+ jalr t9
+ nop
+
+ /* Initialize caches...
+ */
+ la t9, mips_cache_reset
+ jalr t9
+ nop
+
+ /* ... and enable them.
+ */
+ li t0, CONF_CM_CACHABLE_NONCOHERENT
+ mtc0 t0, CP0_CONFIG
+#endif /* !CONFIG_SKIP_LOWLEVEL_INIT */
+
+ /* Set up temporary stack.
+ */
+#ifdef CONFIG_SYS_INIT_RAM_LOCK_MIPS
+ li a0, CONFIG_SYS_INIT_SP_OFFSET
+ la t9, mips_cache_lock
+ jalr t9
+ nop
+#endif
+
+ li t0, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
+ la sp, 0(t0)
+
+ la t9, bootstrap_board_init_f
+ jr t9
+ nop
+
+/*
+ * void relocate_code (addr_sp, gd, addr_moni)
+ *
+ * This "function" does not return, instead it continues in RAM
+ * after relocating the monitor code.
+ *
+ * a0 = addr_sp
+ * a1 = gd
+ * a2 = destination address
+ */
+ .globl relocate_code
+ .ent relocate_code
+relocate_code:
+ move sp, a0 /* Set new stack pointer */
+
+ li t0, CONFIG_BOOTSTRAP_TEXT_BASE
+ la t3, in_ram
+ lw t2, -12(t3) /* t2 <-- uboot_end_data */
+ move t1, a2
+ move s2, a2 /* s2 <-- destination address */
+
+ /*
+ * Fix $gp:
+ *
+ * New $gp = (Old $gp - CONFIG_SYS_MONITOR_BASE) + Destination Address
+ */
+ move t6, gp
+ sub gp, CONFIG_BOOTSTRAP_TEXT_BASE
+ add gp, a2 /* gp now adjusted */
+ sub s1, gp, t6 /* s1 <-- relocation offset */
+
+ /*
+ * t0 = source address
+ * t1 = target address
+ * t2 = source end address
+ */
+
+ /*
+ * Save destination address and size for later usage in flush_cache()
+ */
+ move s0, a1 /* save gd in s0 */
+ move a0, t1 /* a0 <-- destination addr */
+ sub a1, t2, t0 /* a1 <-- size */
+
+ /* On the purple board we copy the code earlier in a special way
+ * in order to solve flash problems
+ */
+#ifndef CONFIG_PURPLE
+1:
+ lw t3, 0(t0)
+ sw t3, 0(t1)
+ addu t0, 4
+ ble t0, t2, 1b
+ addu t1, 4 /* delay slot */
+#endif
+
+ /* If caches were enabled, we would have to flush them here.
+ */
+
+ /* a0 & a1 are already set up for flush_cache(start, size) */
+ la t9, flush_cache
+ jalr t9
+ nop
+
+ /* Jump to where we've relocated ourselves.
+ */
+ addi t0, s2, in_ram - _start
+ jr t0
+ nop
+
+ .word _gp
+ .word _GLOBAL_OFFSET_TABLE_
+ .word uboot_end_data
+ .word uboot_end
+ .word num_got_entries
+
+in_ram:
+ /*
+ * Now we want to update GOT.
+ *
+ * GOT[0] is reserved. GOT[1] is also reserved for the dynamic object
+ * generated by GNU ld. Skip these reserved entries from relocation.
+ */
+ lw t3, -4(t0) /* t3 <-- num_got_entries */
+ lw t4, -16(t0) /* t4 <-- _GLOBAL_OFFSET_TABLE_ */
+ lw t5, -20(t0) /* t5 <-- _gp */
+ sub t4, t5 /* compute offset*/
+ add t4, t4, gp /* t4 now holds relocated _GLOBAL_OFFSET_TABLE_
*/
+ addi t4, t4, 8 /* Skipping first two entries. */
+ li t2, 2
+1:
+ lw t1, 0(t4)
+ beqz t1, 2f
+ add t1, s1
+ sw t1, 0(t4)
+2:
+ addi t2, 1
+ blt t2, t3, 1b
+ addi t4, 4 /* delay slot */
+
+ /* Clear BSS.
+ */
+ lw t1, -12(t0) /* t1 <-- uboot_end_data */
+ lw t2, -8(t0) /* t2 <-- uboot_end */
+ add t1, s1 /* adjust pointers */
+ add t2, s1
+
+ sub t1, 4
+1:
+ addi t1, 4
+ bltl t1, t2, 1b
+ sw zero, 0(t1) /* delay slot */
+
+ move a0, s0 /* a0 <-- gd */
+ la t9, bootstrap_board_init_r
+ jr t9
+ move a1, s2 /* delay slot */
+
+ .end relocate_code
+
+/*
+ * void copy_and_jump (void)
+ *
+ * This function copies/unzips the u-boot image and runs it.
+ * This "function" does not return
+ *
+*/
+ .globl copy_and_jump
+ .ent copy_and_jump
+copy_and_jump:
+
+ /* copy_uboot(CONFIG_SYS_MONITOR_BASE, payload_uncsize, payload_start,
payload_size) */
+ li a0, CONFIG_SYS_MONITOR_BASE
+ la a1, payload_uncsize
+ lw a1, 0(a1)
+ la a2, payload_start
+ la a3, payload_size
+ la t9, copy_uboot
+ jalr t9
+ lw a3, 0(a3) /* delay slot */
+
+ li t9, CONFIG_SYS_MONITOR_BASE
+ jr t9
+ nop
+
+ .end copy_and_jump
+
+ /* Exception handlers.
+ */
+romReserved:
+ b romReserved
+
+romExcHandle:
+ b romExcHandle
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile
index 4e90704..3570581 100644
--- a/arch/mips/lib/Makefile
+++ b/arch/mips/lib/Makefile
@@ -24,6 +24,9 @@
include $(TOPDIR)/config.mk
LIB = $(obj)lib$(ARCH).o
+BOOTSTRAP_LIB = $(obj)lib$(ARCH)_bootstrap.o
+
+BOOTSTRAP_LIB-$(CONFIG_BOOTSTRAP) = $(BOOTSTRAP_LIB)
SOBJS-y +=
@@ -35,12 +38,22 @@ COBJS-y += bootm.o
endif
COBJS-y += time.o
-SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += board_bootstrap.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += time.o
+
+BOOTSTRAP_OBJS := $(addprefix $(obj),$(BOOTSTRAP_SOBJS-y) $(BOOTSTRAP_COBJS-y))
+
+SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) $(BOOTSTRAP_SOBJS-y:.o=.S)
$(BOOTSTRAP_COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
+all: $(LIB) $(BOOTSTRAP_LIB-y)
+
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
+$(BOOTSTRAP_LIB): $(obj).depend $(BOOTSTRAP_OBJS)
+ $(call cmd_link_o_target, $(BOOTSTRAP_OBJS))
+
#########################################################################
# defines $(obj).depend target
diff --git a/arch/mips/lib/board_bootstrap.c b/arch/mips/lib/board_bootstrap.c
new file mode 100644
index 0000000..1d548d6
--- /dev/null
+++ b/arch/mips/lib/board_bootstrap.c
@@ -0,0 +1,261 @@
+/*
+ * (C) Copyright 2010 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini, luigi.mantell...@idf-hit.com
+ *
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, w...@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 <command.h>
+#include <malloc.h>
+#include <stdio_dev.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern int timer_init(void);
+
+extern int incaip_set_cpuclk(void);
+
+extern ulong uboot_end_data;
+extern ulong uboot_end;
+
+static char *failed = "*** failed ***\n";
+
+/*
+ * mips_io_port_base is the begin of the address space to which x86 style
+ * I/O ports are mapped.
+ */
+unsigned long mips_io_port_base = -1;
+
+int __board_early_init_f(void)
+{
+ /*
+ * Nothing to do in this dummy implementation
+ */
+ return 0;
+}
+
+int board_early_init_f(void) __attribute__((weak,
alias("__board_early_init_f")));
+int bootstrap_board_early_init_f(void) __attribute__((weak,
alias("board_early_init_f")));
+
+static int bootstrap_init_func_ram (void)
+{
+ if ((gd->ram_size = bootstrap_initdram (0)) > 0) {
+ return (0);
+ }
+ puts (failed);
+ return (1);
+}
+
+static int bootstrap_display_banner(void)
+{
+ puts ("bootstrap...");
+ return (0);
+}
+
+static int bootstrap_init_baudrate (void)
+{
+#if defined(CONFIG_BOOTSTRAP_BAUDRATE)
+ gd->baudrate = CONFIG_BOOTSTRAP_BAUDRATE;
+#else
+ gd->baudrate = CONFIG_BAUDRATE;
+#endif
+ return 0;
+}
+
+/*
+ * Breath some life into the board...
+ *
+ * The first part of initialization is running from Flash memory;
+ * its main purpose is to initialize the RAM so that we
+ * can relocate the monitor code to RAM.
+ */
+
+/*
+ * All attempts to come up with a "common" initialization sequence
+ * that works for all boards and architectures failed: some of the
+ * requirements are just _too_ different. To get rid of the resulting
+ * mess of board dependend #ifdef'ed code we now make the whole
+ * initialization sequence configurable to the user.
+ *
+ * The requirements for any new initalization function is simple: it
+ * receives a pointer to the "global data" structure as it's only
+ * argument, and returns an integer return code, where 0 means
+ * "continue" and != 0 means "fatal error, hang the system".
+ */
+typedef int (init_fnc_t) (void);
+
+static init_fnc_t *init_sequence[] = {
+ bootstrap_board_early_init_f,
+ timer_init,
+ bootstrap_init_baudrate,/* initialze baudrate settings */
+ serial_init, /* serial communications setup */
+ bootstrap_display_banner, /* say that we are here */
+ bootstrap_checkboard,
+ bootstrap_init_func_ram,
+ NULL,
+};
+
+
+void bootstrap_board_init_f(ulong bootflag)
+{
+ gd_t gd_data, *id;
+ bd_t *bd;
+ init_fnc_t **init_fnc_ptr;
+ ulong addr, addr_sp, len = (ulong)&uboot_end -
CONFIG_BOOTSTRAP_TEXT_BASE;
+ ulong *s;
+
+ /* Pointer is writable since we allocated a register for it.
+ */
+ gd = &gd_data;
+ /* compiler optimization barrier needed for GCC >= 3.4 */
+ __asm__ __volatile__("": : :"memory");
+
+ memset ((void *)gd, 0, sizeof (gd_t));
+
+ for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
+ if ((*init_fnc_ptr)() != 0) {
+ bootstrap_hang ();
+ }
+ }
+
+ /*
+ * Now that we have DRAM mapped and working, we can
+ * relocate the code and continue running from DRAM.
+ */
+ addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
+
+ /* We can reserve some RAM "on top" here.
+ */
+
+ /* round down to next 4 kB limit.
+ */
+ addr &= ~(4096 - 1);
+ debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
+
+ /* Reserve memory for U-Boot code, data & bss
+ * round down to next 16 kB limit
+ */
+ addr -= len;
+ addr &= ~(16 * 1024 - 1);
+
+ debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
+
+ /* Reserve memory for malloc() arena.
+ */
+ addr_sp = addr - TOTAL_MALLOC_LEN;
+ debug ("Reserving %dk for malloc() at: %08lx\n",
+ TOTAL_MALLOC_LEN >> 10, addr_sp);
+
+ /*
+ * (permanently) allocate a Board Info struct
+ * and a permanent copy of the "global" data
+ */
+ addr_sp -= sizeof(bd_t);
+ bd = (bd_t *)addr_sp;
+ gd->bd = bd;
+ debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
+ sizeof(bd_t), addr_sp);
+
+ addr_sp -= sizeof(gd_t);
+ id = (gd_t *)addr_sp;
+ debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
+ sizeof (gd_t), addr_sp);
+
+ /* Reserve memory for boot params.
+ */
+ addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
+ bd->bi_boot_params = addr_sp;
+ debug ("Reserving %dk for boot params() at: %08lx\n",
+ CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
+
+ /*
+ * Finally, we set up a new (bigger) stack.
+ *
+ * Leave some safety gap for SP, force alignment on 16 byte boundary
+ * Clear initial stack frame
+ */
+ addr_sp -= 16;
+ addr_sp &= ~0xF;
+ s = (ulong *)addr_sp;
+ *s-- = 0;
+ *s-- = 0;
+ addr_sp = (ulong)s;
+ debug ("Stack Pointer at: %08lx\n", addr_sp);
+
+ /*
+ * Save local variables to board info struct
+ */
+ bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM
memory */
+ bd->bi_memsize = gd->ram_size; /* size of DRAM memory in
bytes */
+ bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
+
+ memcpy (id, (void *)gd, sizeof (gd_t));
+
+ /* On the purple board we copy the code in a special way
+ * in order to solve flash problems
+ */
+ relocate_code (addr_sp, id, addr);
+
+ /* NOTREACHED - relocate_code() does not return */
+}
+/************************************************************************
+ *
+ * This is the next part if the initialization sequence: we are now
+ * running from RAM and have a "normal" C environment, i. e. global
+ * data can be written, BSS has been cleared, the stack size in not
+ * that critical any more, etc.
+ *
+ ************************************************************************
+ */
+
+void bootstrap_board_init_r (gd_t *id, ulong dest_addr)
+{
+ extern void malloc_bin_reloc (void);
+ extern void copy_and_jump(void);
+
+ bd_t *bd;
+
+ gd = id;
+ gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
+
+ debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
+
+ gd->reloc_off = dest_addr - CONFIG_BOOTSTRAP_TEXT_BASE;
+
+ bd = gd->bd;
+
+ /* The Malloc area is immediately below the monitor copy in DRAM */
+ mem_malloc_init(CONFIG_BOOTSTRAP_BASE + gd->reloc_off -
+ TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
+ malloc_bin_reloc();
+
+ copy_and_jump();
+
+ /* NOTREACHED - no way out of command loop except booting */
+}
+
+void bootstrap_hang (void)
+{
+ puts ("### ERROR ### Please RESET the board ###\n");
+ for (;;);
+}
diff --git a/common/Makefile b/common/Makefile
index abea91c..5662506 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -24,6 +24,9 @@
include $(TOPDIR)/config.mk
LIB = $(obj)libcommon.o
+BOOTSTRAP_LIB = $(obj)libcommon_bootstrap.o
+
+BOOTSTRAP_LIB-$(CONFIG_BOOTSTRAP) = $(BOOTSTRAP_LIB)
# core
COBJS-y += main.o
@@ -165,20 +168,28 @@ COBJS-$(CONFIG_MODEM_SUPPORT) += modem.o
COBJS-$(CONFIG_UPDATE_TFTP) += update.o
COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += dlmalloc.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += console_bootstrap.o
+
+BOOTSTRAP_COBJS := $(sort $(BOOTSTRAP_COBJS-y))
+BOOTSTRAP_OBJS := $(addprefix $(obj),$(BOOTSTRAP_COBJS))
COBJS := $(sort $(COBJS-y))
XCOBJS := $(sort $(XCOBJS-y))
-SRCS := $(COBJS:.o=.c) $(XCOBJS:.o=.c)
+SRCS := $(sort $(COBJS:.o=.c) $(XCOBJS:.o=.c) $(BOOTSTRAP_COBJS:.o=.c))
OBJS := $(addprefix $(obj),$(COBJS))
XOBJS := $(addprefix $(obj),$(XCOBJS))
CPPFLAGS += -I..
-all: $(LIB) $(XOBJS)
+all: $(LIB) $(BOOTSTRAP_LIB-y) $(XOBJS)
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
+$(BOOTSTRAP_LIB): $(obj).depend $(BOOTSTRAP_OBJS)
+ $(call cmd_link_o_target, $(BOOTSTRAP_OBJS))
+
$(obj)env_embedded.o: $(src)env_embedded.c $(obj)../tools/envcrc
$(CC) $(AFLAGS) -Wa,--no-warn \
-DENV_CRC=$(shell $(obj)../tools/envcrc) \
diff --git a/common/console_bootstrap.c b/common/console_bootstrap.c
new file mode 100644
index 0000000..cdd4a62
--- /dev/null
+++ b/common/console_bootstrap.c
@@ -0,0 +1,85 @@
+/*
+ * (C) Copyright 2000
+ * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arse...@tin.it
+ *
+ * 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 <stdarg.h>
+#include <malloc.h>
+
+/** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
+
+int getc(void)
+{
+ /* Send directly to the handler */
+ return serial_getc();
+}
+
+int tstc(void)
+{
+ /* Send directly to the handler */
+ return serial_tstc();
+}
+
+void putc(const char c)
+{
+ /* Send directly to the handler */
+ serial_putc(c);
+}
+
+void puts(const char *s)
+{
+ serial_puts(s);
+}
+
+int printf(const char *fmt, ...)
+{
+ va_list args;
+ uint i;
+ char printbuffer[CONFIG_SYS_PBSIZE];
+
+ va_start(args, fmt);
+
+ /* For this to work, printbuffer must be larger than
+ * anything we ever want to print.
+ */
+ i = vsprintf(printbuffer, fmt, args);
+ va_end(args);
+
+ /* Print the string */
+ puts(printbuffer);
+ return i;
+}
+
+int vprintf(const char *fmt, va_list args)
+{
+ uint i;
+ char printbuffer[CONFIG_SYS_PBSIZE];
+
+ /* For this to work, printbuffer must be larger than
+ * anything we ever want to print.
+ */
+ i = vsprintf(printbuffer, fmt, args);
+
+ /* Print the string */
+ puts(printbuffer);
+ return i;
+}
diff --git a/config.mk b/config.mk
index c6d6f7b..103bdce 100644
--- a/config.mk
+++ b/config.mk
@@ -150,7 +150,7 @@ else
ARFLAGS = crv
endif
RELFLAGS= $(PLATFORM_RELFLAGS)
-DBGFLAGS= -g # -DDEBUG
+DBGFLAGS= -g
OPTFLAGS= -Os #-fomit-frame-pointer
ifndef LDSCRIPT
#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
@@ -160,6 +160,11 @@ else
LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
endif
endif
+ifeq ($(CONFIG_BOOTSTRAP),y)
+ifndef BOOTSTRAP_LDSCRIPT
+BOOTSTRAP_LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-bootstrap.lds
+endif
+endif
OBJCFLAGS += --gap-fill=0xff
gccincdir := $(shell $(CC) -print-file-name=include)
@@ -170,6 +175,10 @@ ifneq ($(CONFIG_SYS_TEXT_BASE),)
CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
endif
+ifneq ($(CONFIG_BOOTSTRAP_TEXT_BASE),)
+CPPFLAGS += -DCONFIG_BOOTSTRAP_TEXT_BASE=$(CONFIG_BOOTSTRAP_TEXT_BASE)
+endif
+
ifneq ($(RESET_VECTOR_ADDRESS),)
CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
endif
@@ -190,6 +199,7 @@ CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
endif
CFLAGS += $(call cc-option,-fno-stack-protector)
+CFLAGS += $(call cc-option,-ffunction-sections)
# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
# option to the assembler.
@@ -209,6 +219,13 @@ ifneq ($(CONFIG_SYS_TEXT_BASE),)
LDFLAGS += -Ttext $(CONFIG_SYS_TEXT_BASE)
endif
+ifeq ($(CONFIG_BOOTSTRAP),y)
+BOOTSTRAP_LDFLAGS += -Bstatic -T $(obj)u-boot-bootstrap.lds $(PLATFORM_LDFLAGS)
+ifneq ($(CONFIG_BOOTSTRAP_TEXT_BASE),)
+BOOTSTRAP_LDFLAGS += -Ttext $(CONFIG_BOOTSTRAP_TEXT_BASE)
+endif
+endif
+
# Location of a usable BFD library, where we define "usable" as
# "built for ${HOST}, supports ${TARGET}". Sensible values are
# - When cross-compiling: the root of the cross-environment
diff --git a/include/common.h b/include/common.h
index 189ad81..690cba2 100644
--- a/include/common.h
+++ b/include/common.h
@@ -723,6 +723,27 @@ int cpu_disable(int nr);
int cpu_release(int nr, int argc, char * const argv[]);
#endif
+/* Bootstrap specific code */
+#ifdef CONFIG_BOOTSTRAP
+void bootstrap_hang(void) __attribute__ ((noreturn));
+void bootstrap_board_init_f(ulong) __attribute__ ((noreturn));
+void bootstrap_board_init_r(gd_t *, ulong) __attribute__ ((noreturn));
+int bootstrap_checkboard(void);
+
+int bootstrap_serial_init(void);
+void bootstrap_serial_exit(void);
+void bootstrap_serial_setbrg(void);
+void bootstrap_serial_putc(const char);
+void bootstrap_serial_putc_raw(const char);
+void bootstrap_serial_puts(const char *);
+int bootstrap_serial_getc(void);
+int bootstrap_serial_tstc(void);
+
+phys_size_t bootstrap_initdram (int);
+
+int copy_uboot(void *dst, size_t unc_size, void *src, size_t size);
+#endif
+
#endif /* __ASSEMBLY__ */
/* Put only stuff here that the assembler can digest */
diff --git a/lib/Makefile b/lib/Makefile
index ffdee7d..e6ac700 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -24,6 +24,9 @@
include $(TOPDIR)/config.mk
LIB = $(obj)libgeneric.o
+BOOTSTRAP_LIB = $(obj)libgeneric_bootstrap.o
+
+BOOTSTRAP_LIB-$(CONFIG_BOOTSTRAP) = $(BOOTSTRAP_LIB)
COBJS-$(CONFIG_ADDR_MAP) += addr_map.o
COBJS-$(CONFIG_BZIP2) += bzlib.o
@@ -54,13 +57,36 @@ COBJS-y += vsprintf.o
COBJS-$(CONFIG_ZLIB) += zlib.o
COBJS-$(CONFIG_RBTREE) += rbtree.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += string.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += vsprintf.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += div64.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += ctype.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += time.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP) += bootstrap.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_GZIP) += zlib.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_GZIP) += gunzip.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_GZIP) += crc32.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_BZIP2) += bzlib.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_BZIP2) += bzlib_crctable.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_BZIP2) += bzlib_decompress.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_BZIP2) += bzlib_randtable.o
+BOOTSTRAP_COBJS-$(CONFIG_BOOTSTRAP_BZIP2) += bzlib_huffman.o
+
+BOOTSTRAP_COBJS := $(BOOTSTRAP_COBJS-y)
+BOOTSTRAP_OBJS := $(addprefix $(obj),$(BOOTSTRAP_COBJS))
+
COBJS := $(COBJS-y)
-SRCS := $(COBJS:.o=.c)
+SRCS := $(COBJS:.o=.c) $(BOOTSTRAP_COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
+all: $(LIB) $(BOOTSTRAP_LIB-y)
+
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
+$(BOOTSTRAP_LIB): $(obj).depend $(BOOTSTRAP_OBJS)
+ $(call cmd_link_o_target, $(BOOTSTRAP_OBJS))
+
#########################################################################
# defines $(obj).depend target
diff --git a/lib/bootstrap.c b/lib/bootstrap.c
new file mode 100644
index 0000000..50d3461
--- /dev/null
+++ b/lib/bootstrap.c
@@ -0,0 +1,89 @@
+/*
+ * (C) Copyright 2010 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini, luigi.mantell...@idf-hit.com
+ *
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, w...@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 <command.h>
+#include <stdio_dev.h>
+
+#ifdef CONFIG_BOOTSTRAP_LZMA
+#include <lzma/LzmaTypes.h>
+#include <lzma/LzmaDec.h>
+#include <lzma/LzmaTools.h>
+#endif /* CONFIG_BOOTSTRAP_LZMA */
+
+#ifdef CONFIG_BOOTSTRAP_LZO
+#include <linux/lzo.h>
+#endif /* CONFIG_BOOTSTRAP_LZO */
+
+#ifdef CONFIG_BOOTSTRAP_BZIP2
+#include <bzlib.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const char *algo =
+#if defined(CONFIG_BOOTSTRAP_GZIP)
+ "gzip";
+#elif defined(CONFIG_BOOTSTRAP_LZMA)
+ "lzma";
+#elif defined(CONFIG_BOOTSTRAP_LZO)
+ "lzo";
+#elif defined(CONFIG_BOOTSTRAP_BZIP2)
+ "bzip2";
+#else
+ "flat";
+#endif
+
+
+int copy_uboot(void *dst, size_t unc_size, void *src, size_t size)
+{
+ int ret;
+ debug("copy from %p (%d) to %p (%d)\n", src, size, dst, unc_size);
+
+ printf("Uncompressing payload (%s)...", algo);
+#if defined(CONFIG_BOOTSTRAP_GZIP)
+ ret = gunzip(dst, unc_size, src, &size);
+#elif defined(CONFIG_BOOTSTRAP_LZMA)
+ SizeT outsize = unc_size;
+ ret = lzmaBuffToBuffDecompress(dst, &outsize, src, size);
+#elif defined(CONFIG_BOOTSTRAP_LZO)
+ uint unc_len = unc_size;
+ ret = lzop_decompress(src, size, dst, &unc_len);
+#elif defined(CONFIG_BOOTSTRAP_BZIP2)
+ uint unc_len = unc_size;
+ ret = BZ2_bzBuffToBuffDecompress ((char*)dst, &unc_len, (char *)src,
size, CONFIG_SYS_MALLOC_LEN < (4096 * 1024), 0);
+#else
+ memcpy(dst, src, size);
+ ret = 0;
+#endif
+ if (ret) {
+ printf("failed with error %d.\n", ret);
+ bootstrap_hang();
+ } else {
+ puts("done.\n");
+ }
+ return ret;
+}
\ No newline at end of file
diff --git a/lib/lzma/Makefile b/lib/lzma/Makefile
index 4d3401d..395b8dc 100644
--- a/lib/lzma/Makefile
+++ b/lib/lzma/Makefile
@@ -32,7 +32,9 @@ SOBJS =
CFLAGS += -D_LZMA_PROB32
-COBJS-$(CONFIG_LZMA) += LzmaDec.o LzmaTools.o
+COBJS-$(CONFIG_LZMA)$(CONFIG_BOOTSTRAP_LZMA) += LzmaDec.o LzmaTools.o
+
+COBJS-y += $(COBJS-yy)
COBJS = $(COBJS-y)
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/lib/lzo/Makefile b/lib/lzo/Makefile
index 69bc839..c8d7fa5 100644
--- a/lib/lzo/Makefile
+++ b/lib/lzo/Makefile
@@ -27,7 +27,9 @@ LIB = $(obj)liblzo.o
SOBJS =
-COBJS-$(CONFIG_LZO) += lzo1x_decompress.o
+COBJS-$(CONFIG_LZO)$(CONFIG_BOOTSTRAP_LZO) += lzo1x_decompress.o
+
+COBJS-y += $(OBJS-yy)
COBJS = $(COBJS-y)
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
--
1.7.3
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