Hi Ronny,
On Monday 14 June 2010 12:00:38 Ronny D wrote:
I am using customized ppc440 based board.
BTW: Do you plan to send the U-Boot changes to the mailing list and some time?
We have created a .dtb file, u-boot should not update the file because of that we have added following macro in config file #define CONFIG_OF_LIBFDT 1 #undef CONFIG_OF_BOARD_SETUP
With the above change kernel code gets hang with following log:
Movable zone start PFN for each node early_node_map[1] active PFN ranges 0: 0x00000000 -> 0x00030000 MMU: Allocated 1088 bytes of context maps for 255 contexts Built 1 zonelists in Zone order, mobility grouping on. Total pages: 195072 Kernel command line: PID hash table entries: 4096 (order: 12, 16384 bytes) Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 755584k/786432k available (1860k kernel code, 30508k reserved, 112k data , 60k bss, 116k init) Kernel virtual memory layout:
- 0xffffe000..0xfffff000 : fixmap
- 0xfde00000..0xfe000000 : consistent mem
- 0xfddfe000..0xfde00000 : early ioremap
- 0xf1000000..0xfddfe000 : vmalloc & ioremap
SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 NR_IRQS:512 UIC0 (32 IRQ sources) at DCR 0x20 UIC1 (32 IRQ sources) at DCR 0x30 UIC1 (32 IRQ sources) at DCR 0x60
When we debug the u-boot code by added the following flag #define CONFIG_OF_BOARD_SETUP 1 Kernel works fine.
Is there any dependency of CONFIG_OF_BOARD_SETUP flag for .dtb file?
With CONFIG_OF_BOARD_SETUP defined, the function ft_board_setup() will be called to modify the dtb before passing it to the Linux kernel. I suggest you check the code to see, what exactly gets changed/patched by this routine.
Cheers, Stefan
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