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[Blackfin] arch: Initial checkin of the memory protection support.

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Enable it with CONFIG_MPU.

Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
This commit is contained in:
Bernd Schmidt
2008-01-27 18:39:16 +08:00
committed by Bryan Wu
parent 2047e40d72
commit b97b8a9983
15 changed files with 822 additions and 8 deletions
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4
arch/blackfin/mm/init.c
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@@ -184,13 +184,15 @@ static __init void free_init_pages(const char *what, unsigned long begin, unsign
#ifdef CONFIG_BLK_DEV_INITRD
void __init free_initrd_mem(unsigned long start, unsigned long end)
{
#ifndef CONFIG_MPU
free_init_pages("initrd memory", start, end);
#endif
}
#endif
void __init free_initmem(void)
{
#ifdef CONFIG_RAMKERNEL
#if defined CONFIG_RAMKERNEL && !defined CONFIG_MPU
free_init_pages("unused kernel memory",
(unsigned long)(&__init_begin),
(unsigned long)(&__init_end));