diff options
| author | Markos Chandras <markos.chandras@imgtec.com> | 2014-01-15 15:06:03 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-03-26 23:09:18 +0100 |
| commit | 0893d3fb8d27320d4301f14a0b331df291a08044 (patch) | |
| tree | 71126690cfaf4a5f1de4daa6fddfa25ce2184020 | |
| parent | MIPS: kernel: proc: Add EVA to the list of CPU features (diff) | |
| download | linux-0893d3fb8d27320d4301f14a0b331df291a08044.tar.xz linux-0893d3fb8d27320d4301f14a0b331df291a08044.zip | |
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>
| -rw-r--r-- | arch/mips/include/asm/bootinfo.h | 2 | ||||
| -rw-r--r-- | arch/mips/mm/init.c | 12 |
2 files changed, 13 insertions, 1 deletions
diff --git a/arch/mips/include/asm/bootinfo.h b/arch/mips/include/asm/bootinfo.h index 4d2cdea5aa37..83a4db4e3794 100644 --- a/arch/mips/include/asm/bootinfo.h +++ b/arch/mips/include/asm/bootinfo.h @@ -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() */ diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index 6b59617760c1..4fc74c78265a 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -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 |