From d111e8f9644aa585c1a7e198d74a4d2682ef1374 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 27 Sep 2006 15:27:33 +0100 Subject: [ARM] Split ARM MM initialisation for !mmu Move the MMU specific code from init.c into mmu.c, and add nommu fixups to nommu.c Signed-off-by: Russell King --- arch/arm/mm/nommu.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'arch/arm/mm/nommu.c') diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index 1464ed817b5d..e369aeb0c25c 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -11,6 +11,42 @@ #include #include +#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)); -- cgit v1.2.3