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powerpc/mm/32: add base address to mmu_mapin_ram()

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At the time being, mmu_mapin_ram() always maps RAM from the beginning.
But some platforms like the WII have to map a second block of RAM.

This patch adds to mmu_mapin_ram() the base address of the block.
At the moment, only base address 0 is supported.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2019-02-21 19:08:38 +00:00 committed by Michael Ellerman
parent 6d183ca8ba
commit 14e609d693
7 changed files with 9 additions and 9 deletions
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2
arch/powerpc/mm/40x_mmu.c
View File

@ -93,7 +93,7 @@ void __init MMU_init_hw(void)
#define LARGE_PAGE_SIZE_16M (1<<24)
#define LARGE_PAGE_SIZE_4M (1<<22)
unsigned long __init mmu_mapin_ram(unsigned long top)
unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long v, s, mapped;
phys_addr_t p;

2
arch/powerpc/mm/44x_mmu.c
View File

@ -170,7 +170,7 @@ void __init MMU_init_hw(void)
flush_instruction_cache();
}
unsigned long __init mmu_mapin_ram(unsigned long top)
unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long addr;
unsigned long memstart = memstart_addr & ~(PPC_PIN_SIZE - 1);

2
arch/powerpc/mm/8xx_mmu.c
View File

@ -99,7 +99,7 @@ static void __init mmu_patch_cmp_limit(s32 *site, unsigned long mapped)
modify_instruction_site(site, 0xffff, (unsigned long)__va(mapped) >> 16);
}
unsigned long __init mmu_mapin_ram(unsigned long top)
unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long mapped;

2
arch/powerpc/mm/fsl_booke_mmu.c
View File

@ -221,7 +221,7 @@ unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, bool dryrun)
#error "LOWMEM_CAM_NUM must be less than NUM_TLBCAMS"
#endif
unsigned long __init mmu_mapin_ram(unsigned long top)
unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
return tlbcam_addrs[tlbcam_index - 1].limit - PAGE_OFFSET + 1;
}

2
arch/powerpc/mm/mmu_decl.h
View File

@ -130,7 +130,7 @@ extern void wii_memory_fixups(void);
*/
#ifdef CONFIG_PPC32
extern void MMU_init_hw(void);
extern unsigned long mmu_mapin_ram(unsigned long top);
unsigned long mmu_mapin_ram(unsigned long base, unsigned long top);
#endif
#ifdef CONFIG_PPC_FSL_BOOK3E

6
arch/powerpc/mm/pgtable_32.c
View File

@ -258,15 +258,15 @@ void __init mapin_ram(void)
#ifndef CONFIG_WII
top = total_lowmem;
s = mmu_mapin_ram(top);
s = mmu_mapin_ram(0, top);
__mapin_ram_chunk(s, top);
#else
if (!wii_hole_size) {
s = mmu_mapin_ram(total_lowmem);
s = mmu_mapin_ram(0, total_lowmem);
__mapin_ram_chunk(s, total_lowmem);
} else {
top = wii_hole_start;
s = mmu_mapin_ram(top);
s = mmu_mapin_ram(0, top);
__mapin_ram_chunk(s, top);
top = memblock_end_of_DRAM();

2
arch/powerpc/mm/ppc_mmu_32.c
View File

@ -73,7 +73,7 @@ unsigned long p_block_mapped(phys_addr_t pa)
return 0;
}
unsigned long __init mmu_mapin_ram(unsigned long top)
unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top)
{
unsigned long tot, bl, done;
unsigned long max_size = (256<<20);