diff options
Diffstat (limited to 'arch/arm/mm/nommu.c')
| -rw-r--r-- | arch/arm/mm/nommu.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index 1464ed817b5..e369aeb0c25 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -11,6 +11,42 @@ #include <asm/io.h> #include <asm/page.h> +#include "mm.h" + +extern void _stext, __data_start, _end; + +/* + * Reserve the various regions of node 0 + */ +void __init reserve_node_zero(pg_data_t *pgdat) +{ + /* + * Register the kernel text and data with bootmem. + * Note that this can only be in node 0. + */ +#ifdef CONFIG_XIP_KERNEL + reserve_bootmem_node(pgdat, __pa(&__data_start), &_end - &__data_start); +#else + reserve_bootmem_node(pgdat, __pa(&_stext), &_end - &_stext); +#endif + + /* + * Register the exception vector page. + * some architectures which the DRAM is the exception vector to trap, + * alloc_page breaks with error, although it is not NULL, but "0." + */ + reserve_bootmem_node(pgdat, CONFIG_VECTORS_BASE, PAGE_SIZE); +} + +/* + * paging_init() sets up the page tables, initialises the zone memory + * maps, and sets up the zero page, bad page and bad page tables. + */ +void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc) +{ + bootmem_init(mi); +} + void flush_dcache_page(struct page *page) { __cpuc_flush_dcache_page(page_address(page)); |