[U-Boot-Users] Re: Re: really really tiny code

[Bharath G - CTD , Chennai]

Hi Nishant,

>Nishant Galange wrote:

> The only help I need is with gcc, or ppc_82xx-gcc, to be precise. 
> I have no idea how to give it a single .S or .asm file and tell it to
create a .bin. 
> Makefiles? I only know how to use readymade ones, not to how to create
one.

This example should help you.I used it when i did not have my debugger up
and running,


I use a montavista ppc_82xx- toolchain .My uboot source is in /home/bharath,
textbase is 0xfff00000 . I used my custom init file's and my c (quick_test)
file to test my target board.

Change them to use for your configuration.

*-----------------------------*

export PATH=$PATH:/opt/montavista/devkit/ppc/82xx/bin

ppc_82xx-gcc -Wa,-gstabs -D__ASSEMBLY__ -g  -Os   -fPIC -ffixed-r14 -meabi
-D__KERNEL__ -DTEXT_BA
SE=0xfff00000 -I/home/bharath/sources/u-boot/include -fno-builtin
-ffreestanding -nostdinc -isyst
em
/opt/montavista/devkit/ppc/82xx/lib/gcc-lib/powerpc-hardhat-linux/3.3.1/incl
ude -pipe  -DCONFI
G_PPC -D__powerpc__ -DCONFIG_8260 -ffixed-r2 -ffixed-r29 -mstring -mcpu=603e
-mmultiple -c -o mpc
8270_init.o mpc8270_init.S

ppc_82xx-gcc -g  -Os   -fPIC -ffixed-r14 -meabi -D__KERNEL__
-DTEXT_BASE=0xfff00000 -I/home/bhara
th/sources/u-boot/include -fno-builtin -ffreestanding -nostdinc -isystem
/opt/montavista/devkit/p
pc/82xx/lib/gcc-lib/powerpc-hardhat-linux/3.3.1/include -pipe  -DCONFIG_PPC
-D__powerpc__ -DCONFI
G_8260 -ffixed-r2 -ffixed-r29 -mstring -mcpu=603e -mmultiple -Wall
-Wstrict-prototypes -c -o mpc8
270_init_h.o mpc8270_init_h.c

ppc_82xx-gcc -g  -Os   -fPIC -ffixed-r14 -meabi -D__KERNEL__
-DTEXT_BASE=0xfff00000 -I/home/bhara
th/sources/u-boot/include -fno-builtin -ffreestanding -nostdinc -isystem
/opt/montavista/devkit/p
pc/82xx/lib/gcc-lib/powerpc-hardhat-linux/3.3.1/include -pipe  -DCONFIG_PPC
-D__powerpc__ -DCONFI
G_8260 -ffixed-r2 -ffixed-r29 -mstring -mcpu=603e -mmultiple -Wall
-Wstrict-prototypes -c -o quic
k_test.o quick_test.c

ppc_82xx-ld -Bstatic -e 0xfff00100 -n $UNDEF_SYM -o quick_test
mpc8270_init.o mpc8270_init_h.o qu
ick_test.o

ppc_82xx-objcopy -x -g -O binary quick_test quick_test.bin

*--------------------------*


Hope this helps,

Cheers,

.Bharath.

Ps: See how u-boot compiles your source.

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