Cleanup PPC44x mmu_mapin_ram()
PATCH 1/1 Cleanup PPC44x mmu_mapin_ram()
Remove some old cruft in the kernel lowmem mapping code and save some memory in the process.
Signed-off-by Matt Porter <[email protected]>
===== arch/ppc/mm/44x_mmu.c 1.3 vs edited =====
arch/ppc/mm/44x_mmu.c +8 -37
@@ -93,10 +93,14 @@ }/* -* Configure PPC44x TLB for AS0 exception processing. +* MMU_init_hw does the chip-specific initialization of the MMU hardware. */ -static void __init -ppc44x_tlb_config (void ) +void __init MMU_init_hw (void ) +{ +flush_instruction_cache (); +} + +unsigned long __init mmu_mapin_ram (void ) {unsigned int pinned_tlbs =1 ;int i;
@@ -124,39 +128,6 @@unsigned int phys_addr = (PPC44x_LOW_SLOT-i) * PPC44x_PIN_SIZE;ppc44x_pin_tlb (i, phys_addr+PAGE_OFFSET , phys_addr); } -} - -/* -* MMU_init_hw does the chip-specific initialization of the MMU hardware. -*/ -void __init MMU_init_hw (void ) -{ -flush_instruction_cache (); - -ppc44x_tlb_config (); -} - -/* TODO: Add large page lowmem mapping support */ -unsigned long __init mmu_mapin_ram (void ) -{ -unsigned long v, s, f = _PAGE_GUARDED; -phys_addr_t p; - - v =KERNELBASE ; - p =PPC_MEMSTART ; - -for (s =0 ; s < total_lowmem; s +=PAGE_SIZE ) { -if ((char *) v >= _stext && (char *) v < etext) - f |= _PAGE_RAM_TEXT; -else - f |= _PAGE_RAM; -map_page (v, p, f); - v +=PAGE_SIZE ; - p +=PAGE_SIZE ; - } - -if (ppc_md.progress) - ppc_md.progress ("MMU:mmu_mapin_ram done" ,0x401 ); -return s; +return total_lowmem; }