forked from luck/tmp_suning_uos_patched
47 lines
834 B
C
47 lines
834 B
C
|
/*
|
||
|
|
* linux/arch/arm/kernel/arch.c
|
||
|
|
*
|
||
|
|
* Architecture specific fixups.
|
||
|
|
*/
|
||
|
|
#include <linux/config.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
|
||
|
|
#include <asm/elf.h>
|
||
|
|
#include <asm/page.h>
|
||
|
|
#include <asm/setup.h>
|
||
|
|
#include <asm/mach/arch.h>
|
||
|
|
|
||
|
|
unsigned int vram_size;
|
||
|
|
|
||
|
|
#ifdef CONFIG_ARCH_ACORN
|
||
|
|
|
||
|
|
unsigned int memc_ctrl_reg;
|
||
|
|
unsigned int number_mfm_drives;
|
||
|
|
|
||
|
|
static int __init parse_tag_acorn(const struct tag *tag)
|
||
|
|
{
|
||
|
|
memc_ctrl_reg = tag->u.acorn.memc_control_reg;
|
||
|
|
number_mfm_drives = tag->u.acorn.adfsdrives;
|
||
|
|
|
||
|
|
switch (tag->u.acorn.vram_pages) {
|
||
|
|
case 512:
|
||
|
|
vram_size += PAGE_SIZE * 256;
|
||
|
|
case 256:
|
||
|
|
vram_size += PAGE_SIZE * 256;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
#if 0
|
||
|
|
if (vram_size) {
|
||
|
|
desc->video_start = 0x02000000;
|
||
|
|
desc->video_end = 0x02000000 + vram_size;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
__tagtable(ATAG_ACORN, parse_tag_acorn);
|
||
|
|
|
||
|
|
#endif
|