2 * linux/arch/arm/mm/nommu.c
4 * ARM uCLinux supporting functions.
6 #include <linux/module.h>
8 #include <linux/pagemap.h>
10 #include <asm/cacheflush.h>
16 extern void _stext
, __data_start
, _end
;
19 * Reserve the various regions of node 0
21 void __init
reserve_node_zero(pg_data_t
*pgdat
)
24 * Register the kernel text and data with bootmem.
25 * Note that this can only be in node 0.
27 #ifdef CONFIG_XIP_KERNEL
28 reserve_bootmem_node(pgdat
, __pa(&__data_start
), &_end
- &__data_start
);
30 reserve_bootmem_node(pgdat
, __pa(&_stext
), &_end
- &_stext
);
34 * Register the exception vector page.
35 * some architectures which the DRAM is the exception vector to trap,
36 * alloc_page breaks with error, although it is not NULL, but "0."
38 reserve_bootmem_node(pgdat
, CONFIG_VECTORS_BASE
, PAGE_SIZE
);
42 * paging_init() sets up the page tables, initialises the zone memory
43 * maps, and sets up the zero page, bad page and bad page tables.
45 void __init
paging_init(struct meminfo
*mi
, struct machine_desc
*mdesc
)
51 * We don't need to do anything here for nommu machines.
53 void setup_mm_for_reboot(char mode
)
57 void flush_dcache_page(struct page
*page
)
59 __cpuc_flush_dcache_page(page_address(page
));
61 EXPORT_SYMBOL(flush_dcache_page
);
63 void __iomem
*__ioremap_pfn(unsigned long pfn
, unsigned long offset
,
64 size_t size
, unsigned long flags
)
66 if (pfn
>= (0x100000000ULL
>> PAGE_SHIFT
))
68 return (void __iomem
*) (offset
+ (pfn
<< PAGE_SHIFT
));
70 EXPORT_SYMBOL(__ioremap_pfn
);
72 void __iomem
*__ioremap(unsigned long phys_addr
, size_t size
,
75 return (void __iomem
*)phys_addr
;
77 EXPORT_SYMBOL(__ioremap
);
79 void __iounmap(void __iomem
*addr
)
82 EXPORT_SYMBOL(__iounmap
);
This page took 0.042957 seconds and 6 git commands to generate.