On 11/20/07, Thiemo Seufer <ths@xxxxxxxxxxxx> wrote:
> zhuzhenhua wrote:
> > hello,all
> > i want to place my kernel loadaddr=0x81008000 and set
> > EBASE=0x81000000, it workes.
> > but there is still some memory usable before 0x81000000, for
> > example from 0x80100000 ~ 0x80200000
>
> The obvious thing to do seems to set LOARADDR to 0x80208000.
>
> > i have try to pass param as mem=1M@1M mem=16M@16M to the kernel,
> > it seems only take the 0x8000000 ~ kernel_end as reserved.
> > is there any other options to set the memory useable? ( my kernel
> > version is 2.6.14)
> > thanks for any hints
>
> AFAIR the kernel assumes to occupy the lowest addresses of the usable RAM.
>
>
> Thiemo
>
i have resolve it, by modify as follow:
in arch/mips/kernel/setup.c
static inline void bootmem_init(void)
.....
if (curr_pfn < start_pfn) // just change the judgement
curr_pfn = start_pfn;
....
/* Register lowmem ranges */
free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(size));
thanks all.
zzh
