128 Mb virtual memory configuration for u-boot

Hello. I'm using ARM based system (samsung smdk2443) and u-boot (old, from samsung). Previously, it was set up to use 64 Mb of RAM. But we have 128 Mb on board. I have reconfigured MMU and some definitions (i.e. PHYS_SDRAM_1_SIZE). But then i found out, that virtual addresses 0x835a0000 and 0x875a0000 point to the same physical address. Something is wrong with configuration, but what?

Thanks in advance.

Here is MMU table:

mmu_table:

    .set __base,0
    /* 1:1 mapping for debugging */
    .rept 0x600
    FL_SECTION_ENTRY __base,3,0,0,0
    .set __base,__base+1
    .endr

    /* access is not allowed. */
    .rept 0x800 - 0x600
    .word 0x00000000
    .endr

    .set __base, 0x300
    .rept 0x880 - 0x800
    FL_SECTION_ENTRY __base,3,0,1,1
    .set __base,__base+1
    .endr

    /* access is not allowed. */
    .rept 0x1000 - 0x880
    .word 0x00000000
    .endr