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MIPS: mm: init: Add free_init_pages() callback for EVA 

A core in EVA mode can have any possible segment mapping, so the
default free_initmem_default() function may not always work as expected.
Therefore, add a callback that platforms can use to free up the init section.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
hifive-unleashed-5.1
Markos Chandras 2014-01-15 14:06:03 +00:00 committed by Ralf Baechle
parent 91119686f3
commit 0893d3fb8d
2 changed files with 13 additions and 1 deletions
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2
arch/mips/include/asm/bootinfo.h
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@ -112,6 +112,8 @@ extern void prom_free_prom_memory(void);
extern void free_init_pages(const char *what,
unsigned long begin, unsigned long end);
extern void (*free_init_pages_eva)(void *begin, void *end);
/*
* Initial kernel command line, usually setup by prom_init()
*/

12
arch/mips/mm/init.c
View File

@ -422,10 +422,20 @@ void free_initrd_mem(unsigned long start, unsigned long end)
}
#endif
void (*free_init_pages_eva)(void *begin, void *end) = NULL;
void __init_refok free_initmem(void)
{
prom_free_prom_memory();
free_initmem_default(POISON_FREE_INITMEM);
/*
* Let the platform define a specific function to free the
* init section since EVA may have used any possible mapping
* between virtual and physical addresses.
*/
if (free_init_pages_eva)
free_init_pages_eva((void *)&__init_begin, (void *)&__init_end);
else
free_initmem_default(POISON_FREE_INITMEM);
}
#ifndef CONFIG_MIPS_PGD_C0_CONTEXT