rom_drv.c

来自「ADS下的bios工程」· C语言 代码 · 共 61 行

#include <bios/s3c2410x.h>
#include <bios/config.h>
#include <bios/boot.h>
#include <bios/malloc.h>
#include <bios/time.h>
#include <bios/stdio.h>
#include <bios/stdioint.h>
#include <bios/string.h>
#include <bios/gzip.h>
#include <bios/nand.h>

/* extern variable */
extern int _bss_start;
extern unsigned long load_addr;

/* global variable */
unsigned long kn_src;
unsigned long kn_dst;

static int rom_probe(void)
{
	return 0 ;
}

static int rom_start(void)
{
	return 0 ;
}

static int rom_load(void)
{
	u32 decomp_kernel_end, *free_mem_end;

	kn_dst = (unsigned long)KERNEL_LOAD_BASE;	/* 0x30f00000 */
	kn_src = (unsigned long)DOWNLOAD_BASE;		/* 0x30300000 */
	free_mem_end = (u32 *)&_bss_start;

#if defined(CONFIG_BOOT_NAND_SIZE_8MB)
	nand_flash_control(nand_read, 16, 0, (unsigned char *)kn_dst, (1024-128)*1024);
#elif defined(CONFIG_BOOT_NAND_SIZE_32MB) || defined(CONFIG_BOOT_NAND_SIZE_64MB)
	nand_flash_control(nand_read, 9, 0, (unsigned char *)kn_dst, (1024-128)*1024);
#endif

	return 0 ;
}

static int rom_stop(void)
{
	return 0 ;
}

struct bootdev boot_rom = {
	"rom",

	rom_probe,
	rom_start,
	rom_load,
	rom_stop
};