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powerpc/8xx: move setup_initial_memory_limit() into 8xx_mmu.c

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Now we have a 8xx specific .c file for that so put it in there
as other powerpc variants do

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Christophe Leroy 2016-02-09 17:07:54 +01:00 committed by Scott Wood
parent f15eea6684
commit 516d91893b
2 changed files with 17 additions and 19 deletions
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17
arch/powerpc/mm/8xx_mmu.c
View File

@ -81,3 +81,20 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
return mapped; return mapped;
} }
void setup_initial_memory_limit(phys_addr_t first_memblock_base,
phys_addr_t first_memblock_size)
{
/* We don't currently support the first MEMBLOCK not mapping 0
* physical on those processors
*/
BUG_ON(first_memblock_base != 0);
#ifdef CONFIG_PIN_TLB
/* 8xx can only access 24MB at the moment */
memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01800000));
#else
/* 8xx can only access 8MB at the moment */
memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
#endif
}

19
arch/powerpc/mm/init_32.c
View File

@ -193,22 +193,3 @@ void __init MMU_init(void)
/* Shortly after that, the entire linear mapping will be available */ /* Shortly after that, the entire linear mapping will be available */
memblock_set_current_limit(lowmem_end_addr); memblock_set_current_limit(lowmem_end_addr);
} }
#ifdef CONFIG_8xx /* No 8xx specific .c file to put that in ... */
void setup_initial_memory_limit(phys_addr_t first_memblock_base,
phys_addr_t first_memblock_size)
{
/* We don't currently support the first MEMBLOCK not mapping 0
* physical on those processors
*/
BUG_ON(first_memblock_base != 0);
#ifdef CONFIG_PIN_TLB
/* 8xx can only access 24MB at the moment */
memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01800000));
#else
/* 8xx can only access 8MB at the moment */
memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000));
#endif
}
#endif /* CONFIG_8xx */