diff options
| author | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2013-07-31 12:44:46 -0400 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2013-10-10 20:28:19 -0400 |
| commit | a77e0c7b2774fd52ce6bf25c2c3ffdccb7b110ff (patch) | |
| tree | 38b955dc032421ee71aa09c6e0bd18b31a7b3dc2 /arch/arm/kernel/setup.c | |
| parent | f52bb722547f43caeaecbcc62db9f3c3b80ead9b (diff) | |
ARM: mm: Recreate kernel mappings in early_paging_init()
This patch adds a step in the init sequence, in order to recreate
the kernel code/data page table mappings prior to full paging
initialization. This is necessary on LPAE systems that run out of
a physical address space outside the 4G limit. On these systems,
this implementation provides a machine descriptor hook that allows
the PHYS_OFFSET to be overridden in a machine specific fashion.
Cc: Russell King <linux@arm.linux.org.uk>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/kernel/setup.c')
| -rw-r--r-- | arch/arm/kernel/setup.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 0e1e2b3afa45..af7b7db4699e 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -73,6 +73,8 @@ __setup("fpe=", fpe_setup); #endif extern void paging_init(const struct machine_desc *desc); +extern void early_paging_init(const struct machine_desc *, + struct proc_info_list *); extern void sanity_check_meminfo(void); extern enum reboot_mode reboot_mode; extern void setup_dma_zone(const struct machine_desc *desc); @@ -878,6 +880,8 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); sort(&meminfo.bank, meminfo.nr_banks, sizeof(meminfo.bank[0]), meminfo_cmp, NULL); + + early_paging_init(mdesc, lookup_processor_type(read_cpuid_id())); sanity_check_meminfo(); arm_memblock_init(&meminfo, mdesc); |