>
> The normal place to do this is:
> arch/arm/mach_davinci/board_evm.c : __init
> davinci_evm_init()
For me, it's in u-boot
board/davinci/davinci.c:
#define VBPR *(volatile unsigned int* )( 0x20000020)
void davinci_psc_all_enable(void)
{
...
...
/* Set the Bus Priority Register to appropriate
value */
VBPR = 0x20;
}
>
> If I try to access the register using __REG( ) the
> kernel crashes. This
> is caused by the special address of the PBBPR
> register: 0x20000020,
> outside the remapped I/O area 0x01C00000 -
> 0x1FFFFFFFF (see
> "include/asm-arch/arch-davinci/io.h"). I think that
> is a (small) bug in
> the kernel code.
>
> When I try to use mmap() the kernel crashes too, I
> suppose that function
> is not valid in the __init level modules. After the
> kernel is up one can
> do a mmap() and set the register from user space.
>
> Arie de Muijnck
>
>
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