Re: [coreboot] [PATCH]kconfig and romcc

[Patrick Georgi]

Am 09.01.2010 02:34, schrieb Kevin O'Connor:
> config XIP_ROM_BASE
>         hex
>         default 0xfff00000
>
> config XIP_ROM_SIZE
>         hex
>         default 0x100000
>
> to the Kbuild file to force code caching.  (Though, I'm not sure how
> much of this is because of other changes in my tree to enable
> caching.)

Intel and AMD CAR use an automatically adapted variable to retarget the
XIP area (without changing to change the size):
#if defined(CONFIG_TINY_BOOTBLOCK) && CONFIG_TINY_BOOTBLOCK
#define REAL_XIP_ROM_BASE AUTO_XIP_ROM_BASE
#else
#define REAL_XIP_ROM_BASE CONFIG_XIP_ROM_BASE
#endif
        movl    $REAL_XIP_ROM_BASE, %eax
        orl     $MTRR_TYPE_WRBACK, %eax
        wrmsr

instead of
    movl $(CONFIG_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax

I'm not sure at which point XIP is configured on your system, maybe this
helps.

Patrick