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Adding more control to physical address mapping

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A worker function setup_ddr_tlbs_phys() is introduced to implement more
control on physical address mapping.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
York Sun 2010-09-28 15:20:32 -07:00 committed by Kumar Gala
parent 43b08af53e
commit c02ce6e5a1
1 changed files with 10 additions and 6 deletions
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16
arch/powerpc/cpu/mpc85xx/tlb.c
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@ -245,7 +245,8 @@ void init_addr_map(void)
} }
#endif #endif
unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg) unsigned int
setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg)
{ {
int i; int i;
unsigned int tlb_size; unsigned int tlb_size;
@ -275,21 +276,24 @@ unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg)
tlb_size = (camsize - 10) / 2; tlb_size = (camsize - 10) / 2;
set_tlb(1, ram_tlb_address, ram_tlb_address, set_tlb(1, ram_tlb_address, p_addr,
MAS3_SX|MAS3_SW|MAS3_SR, 0, MAS3_SX|MAS3_SW|MAS3_SR, 0,
0, ram_tlb_index, tlb_size, 1); 0, ram_tlb_index, tlb_size, 1);
size -= 1ULL << camsize; size -= 1ULL << camsize;
memsize -= 1ULL << camsize; memsize -= 1ULL << camsize;
ram_tlb_address += 1UL << camsize; ram_tlb_address += 1UL << camsize;
p_addr += 1UL << camsize;
} }
if (memsize) if (memsize)
print_size(memsize, " left unmapped\n"); print_size(memsize, " left unmapped\n");
/*
* Confirm that the requested amount of memory was mapped.
*/
return memsize_in_meg; return memsize_in_meg;
} }
unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg)
{
return
setup_ddr_tlbs_phys(CONFIG_SYS_DDR_SDRAM_BASE, memsize_in_meg);
}
#endif /* !CONFIG_NAND_SPL */ #endif /* !CONFIG_NAND_SPL */