[U-Boot-Users] [PATCH: u-boot-fdt] Improve error print messages.

[Jerry Van Baren <vanbaren@cideas.com>]

Michal Simek wrote:
> Hi,
> 
> I am trying to work with fdt (MPC8349EMDS board) but I have some problems.
> 
> I download the latest version from u-boot-fdt.git fdt branch
> 
> I made minor changes in setting file.
> 
> diff --git a/include/configs/MPC8349EMDS.h b/include/configs/MPC8349EMDS.h
> index 1567fcf..33198d6 100644
> --- a/include/configs/MPC8349EMDS.h
> +++ b/include/configs/MPC8349EMDS.h
> @@ -339,6 +339,7 @@
>  #endif
> 
>  /* pass open firmware flat tree */
> +#define CONFIG_OF_LIBFDT       1
>  #define CONFIG_OF_FLAT_TREE    1
>  #define CONFIG_OF_BOARD_SETUP  1

Undefine CONFIG_OF_FLAT_TREE - it and CONFIG_OF_LIBFDT are mutually 
exclusive.  That is The Old Way, CONFIG_OF_LIBFDT is The New Way.  The 
following is the starting point.  CONFIG_OF_BOARD_SETUP is most likely 
necessary, CONFIG_OF_HAS_BD_T is either necessary or A Good Thing, and 
CONFIG_OF_HAS_UBOOT_ENV is optional.

/* pass open firmware flat tree */
#define CONFIG_OF_LIBFDT        1
#undef  CONFIG_OF_FLAT_TREE
#define CONFIG_OF_BOARD_SETUP   1
#define CONFIG_OF_HAS_BD_T      1
#define CONFIG_OF_HAS_UBOOT_ENV 1

> 
> @@ -739,7 +740,7 @@
>                 "bootm ${kernel_addr} ${ramdisk_addr}\0"                \
>         "net_nfs=tftp 200000 ${bootfile};run nfsargs addip addtty;"     \
>                 "bootm\0"                                               \
> -       "load=tftp 100000 /tftpboot/mpc8349emds/u-boot.bin\0"           \
> +       "load=tftp 100000 mpc8349emds/u-boot.bin\0"             \
>         "update=protect off fe000000 fe03ffff; "                        \
>                 "era fe000000 fe03ffff; cp.b 100000 fe000000 ${filesize}\0"     \
>         "upd=run load;run update\0"                                     \
> [monstr at simekmichal1 u-boot-fdt.git]$
> 
> I got error message in compiling process
> 
> ppc_82xx-gcc -g  -Os   -fPIC -ffixed-r14 -meabi -mrelocatable -D__KERNEL__ -DTEXT_BASE=0xFE000000  -I/tmp/1/u-boot-fdt.git/include -fno-builtin -ffreestanding -nostdinc -isystem /opt/eldk/usr/bin/../lib/gcc/powerpc-linux/4.0.0/include -pipe  -DCONFIG_PPC -D__powerpc__ -DCONFIG_MPC83XX -DCONFIG_E300 -ffixed-r2 -ffixed-r29 -msoft-float -Wall -Wstrict-prototypes -c -o cpu.o cpu.c
> cpu.c: In function 'fdt_set_eth0':
> cpu.c:336: warning: implicit declaration of function 'fdt_get_property'
> cpu.c:337: warning: implicit declaration of function 'fdt_setprop'
> cpu.c: In function 'ft_cpu_setup':
> cpu.c:502: warning: implicit declaration of function 'fdt_find_node_by_path'
> cpu.c:502: error: 'fdt' undeclared (first use in this function)
> cpu.c:502: error: (Each undeclared identifier is reported only once
> cpu.c:502: error: for each function it appears in.)
> make[1]: *** [cpu.o] Error 1
> make[1]: Leaving directory `/tmp/1/u-boot-fdt.git/cpu/mpc83xx'
> make: *** [cpu/mpc83xx/libmpc83xx.a] Error 2
> [monstr at simekmichal1 u-boot-fdt.git]$
> 
> I made simple changes. I suppose that function needs pointer to fdt structure.
> 
> diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
> index 1a6cba7..37cbaa8 100644
> --- a/cpu/mpc83xx/cpu.c
> +++ b/cpu/mpc83xx/cpu.c
> @@ -497,6 +497,7 @@ ft_cpu_setup(void *blob, bd_t *bd)
>         int  nodeoffset;
>         int  err;
>         int  j;
> +       void *fdt=getenv("fdtaddr");
> 
>         for (j = 0; j < (sizeof(fixup_props) / sizeof(fixup_props[0])); j++) {
>                 nodeoffset = fdt_find_node_by_path(fdt, fixup_props[j].node);
> 
> Now building process ends with success. 

Perhaps successful build, but the wrong fix.  The problem is due to your 
enabling CONFIG_OF_FLAT_TREE.

[snip]

> And I got an error. Do you know where is the problem?

Yes.

> Thanks for your responds,
> Best regards,
> 
> Michal Simek

HTH,
gvb