How to run uClinux kernel―base 20040408?
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Step 0 : Install GNU Tools chain
1. download http://www.uclinux.org/pub/uClinux/arm-elf-tools/arm-elf-tools-20030314.sh
2. chmod 755 arm-elf-tools-20030314.sh
3. su root ./arm-elf-tools-20030314.sh
4. arm-elf-gcc -v
Step 1 : Compile uClinux Kernel
1. download http://www.uclinux.org/pub/uClinux/dist/uClinux-dist-20040408.tar.gz
2. tar xvzf uClinux-dist-20040408.tar.gz
3. cd uClinux-dist
4. vi linux-2.4.x/arch/armnommu/vmlinux-armv.lds.in
Line 66
*(got) /* Global Offset table */
#+++++++++++++
romfs_data = .;
romfs.o
romfs_data_end = .;
#+++++++++++++
5. vi vendors/Samsung/4510B/Makefile
Line 66
image:
[ -d ＄(IMAGEDIR) ] || mkdir -p ＄(IMAGEDIR)
genromfs -v -V "ROMdisk" -f ＄(ROMFSIMG) -d ＄(ROMFSDIR)
#+++++++++++++
arm-elf-ld -r -o ＄(ROOTDIR)/＄(LINUXDIR)/romfs.o -b binary ＄(ROMFSIMG)
#+++++++++++++
＄(CROSS_COMPILE)objcopy -O binary --remove-section=.romvec \
--remove-section=.text --remove-section=.ramvec \
--remove-section=.init \
--remove-section=.bss --remove-section=.eram \
＄(ROOTDIR)/＄(LINUXDIR)/linux ＄(IMAGEDIR)/linux.data
6. make menuconfig
Vendor/Product Selection --->
--- Select the Vendor you wish to target
(Samsung) Vendor
--- Select the Product you wish to target
(4510B) Samsung Products
Kernel/Library/Defaults Selection --->
(linux-2.4.x) Kernel Version
(uClibc) Libc Version
7. make dep
8. make lib_only
9. make user_only
vi config/.config
Line 25
CONFIG_USER_LOGIN_LOGIN=y
# CONFIG_USER_OLD_PASSWORDS=y <- - CONFIG_USER_OLD_PASSWORDS=y
# CONFIG_USER_ONLY_ROOT is not set
rm user/boa/src/*.o
make user_only
10. Sh>make romfs
11. Sh>make
vi linux-2.4.x/arch/armnommu/mm/init.c
Line 662
void free_initmem(void)
{
if (!machine_is_integrator() &&
!machine_is_p52() &&
!machine_is_cx821xx() &&
!machine_is_atmel() &&
!machine_is_netarm() &&
// !machine_is_ta7v() && <- - !machine_is_ta7v() &&
!machine_is_ta7s()) {
free_area((unsigned long)(&__init_begin),
(unsigned long)(&__init_end),
"init");
make
12. Sh>make image
make romfs
make
make image
12. ls images/* -l
13. ls linux-2.4.x/linux -l
14. date
Step 2: Add MyApplication
1. cd ../uClinux-dist
2. cd user
3. mkdir myapp
4. cd myapp
5. vi demo.c
#include <stdlib.h>
#include <stdio.h>
int main(void)
{
printf("Hello world! \n");
return 0;
}
6. vi Makefile
EXEC = demo
OBJS = demo.o
all: ＄(EXEC)
＄(EXEC): ＄(OBJS)
＄(CC) ＄(LDFLAGS) -o ＄@ ＄(OBJS) ＄(LDLIBS)
romfs:
＄(ROMFSINST) /bin/＄(EXEC)
clean:
rm -f ＄(EXEC) *.elf *.gdb *.o
7. cd ../..
vi user/Makefile
Line 324
#+++++++++++++
dir_＄(CONFIG_USER_MYAPP_DEMO) += myapp
#+++++++++++++
8. Sh>vi config/config.in
Append at tail
#+++++++++++++
#############################################################################
mainmenu_option next_comment
comment 'My New Application'
bool 'demo' CONFIG_USER_MYAPP_DEMO
comment "My New Application"
endmenu
#############################################################################
#+++++++++++++
9. make menuconfig
make dep
make clean
make lib_only
make user_only
make romfs
make image
make
10. download kernel
ls bin/demo
Step 3: Install SkyEye on RedHat 9.0
1. download http://gro.clinux.org/frs/download.php/912/skyeye-0.8.6.tar.bz2
2. tar xjvf skyeye-0.8.6.tar.bz2
3. cd skyeye
4. ./configure --target=arm-elf --prefix=/usr/local
5. make
6. make install
Step4: S3C4510B uClinux simulating on SkyEye
1. cp ../uClinux-dist/linux-2.4.x/linux .
2. vi Makefile
image.ram:
arm-elf-objcopy -O binary -R .note -R .comment -S linux image.ram
3. vi skyeye.conf
#skyeye config file sample
cpu: arm7tdmi
mach: s3c4510b
mem_bank: map=M, type=RW, addr=0x00000000, size=0x00800000
mem_bank: map=I, type=RW, addr=0x03ff0000, size=0x00100000
net: state=on, mac=0:4:3:2:1:f, ethmod=tun, hostip=192.108.10.2
4. ls �Cl
5. skyeye linux
target sim
load
run
Type Ctrl+C to Skyeye
Step5: GDB/Skyeye uClinux run on SkyEye
1. http://www.uclinux.org/pub/uClinux/dist/uClinux-dist-20041215.tar.gz
2. tar -zxvf uClinux-dist-20041215.tar.gz
3. cd uClinux-dist
4. make menuconfig
Vendor/Product Selection―>
--select the vendor you wish to target
(GDB)vender
--Select the produet you wish to target
(skyeye)GDB produers
kernel/llibrary/defaults selctionà
(linux-2.4.x)kernel version
(uClibc)Lib version
Network device supportà
--IMQneeds CONFIG_NETFILTER enabled
[*]Universal TUN/TAP device driver support
Ethernet(10 or 100Mbit)à
[*]skyeye net2k ethernet support(for ArMulator)
Network Applicationà
[*]ifconfig
[*]ping
5. make process
make dep
make clean
make lib_only
make user_only
make romfs
make image
make
7. cd ..
8. mkdir skyeye
9. cd skyeye
10. vi skyeye.conf
#skyeye config file sample
cpu: arm7tdmi
mach: at91
mem_bank: map=M, type=RW, addr=0x00000000, size=0x00004000
mem_bank: map=M, type=RW, addr=0x01000000, size=0x00400000
mem_bank: map=M, type=R, addr=0x01400000, size=0x00400000, file=boot.rom
mem_bank: map=M, type=RW, addr=0x02000000, size=0x00400000
mem_bank: map=M, type=RW, addr=0x02400000, size=0x00008000
mem_bank: map=M, type=RW, addr=0x04000000, size=0x00400000
mem_bank: map=I, type=RW, addr=0xf0000000, size=0x10000000
#set nic info state=on/off mac=xx:xx:xx:xx:xx:xx ethmod=tuntap/vnet hostip= dd.dd.dd.dd
net: state=on, mac=0:4:3:2:1:f, ethmod=tuntap, hostip=192.168.10.5
11. cp ../uClinux-dist/linux-2.4.x/linux .
12. ln -s ../uClinux-dist/images/romfs.img boot.rom
13. skyeye linux
target sim
load
run
Type Ctrl+C to Skyeye
