2 * linux/arch/arm/kernel/arch.c
4 * Architecture specific fixups.
6 #include <linux/config.h>
7 #include <linux/init.h>
8 #include <linux/types.h>
12 #include <asm/setup.h>
13 #include <asm/mach-types.h>
14 #include <asm/mach/arch.h>
16 unsigned int vram_size;
18 #ifdef CONFIG_ARCH_ACORN
20 unsigned int memc_ctrl_reg;
21 unsigned int number_mfm_drives;
23 static int __init parse_tag_acorn(const struct tag *tag)
25 memc_ctrl_reg = tag->u.acorn.memc_control_reg;
26 number_mfm_drives = tag->u.acorn.adfsdrives;
28 switch (tag->u.acorn.vram_pages) {
30 vram_size += PAGE_SIZE * 256;
32 vram_size += PAGE_SIZE * 256;
38 desc->video_start = 0x02000000;
39 desc->video_end = 0x02000000 + vram_size;
45 __tagtable(ATAG_ACORN, parse_tag_acorn);