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Linux教程網 >> Linux編程 >> Linux編程 >> S3C6410(arm11核)的nandflash移植

S3C6410(arm11核)的nandflash移植

日期:2017/3/1 10:00:20   编辑:Linux編程

第一步,配置內核

<*>Memory Technology Device (MTD) support --->
[*] MTD partitioning support
<*> NAND Device Support --->
<*> NAND Flash support for Samsung S3C SoCs
<*> Support for generic platform NAND driver

第二步:配置資源,添加以下代碼

(1)頭文件
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <plat/nand.h>

(2)配置信息
#define SZ_1K 0x00000400
#define SZ_1M 0x00100000
/* NAND flash controller */
#define S3C64XX_PA_NAND (0x70200000)
#define S3C64XX_SZ_NAND SZ_1M

struct mtd_partition s3c_partition_info[] ={
{
.name = "Bootloader",
.offset = 0,
.size = (4 * 128 *SZ_1K),
.mask_flags = MTD_CAP_NANDFLASH,
},
{
.name = "Kernel",
.offset = (4 * 128 *SZ_1K),
.size = (5*SZ_1M) ,
.mask_flags = MTD_CAP_NANDFLASH,
},
{
.name = "File System",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
}

};

static struct s3c2410_nand_sets3c6410_nand_sets[] = {
[0]= {
.name = "nand",
.nr_chips = 1,
.nr_partitions = ARRAY_SIZE(s3c_partition_info),
.partitions = s3c_partition_info,
},
};

static struct s3c2410_platform_nands3c6410_nand_info = {
.tacls = 25,
.twrph0 = 55,
.twrph1 = 40,
.nr_sets = ARRAY_SIZE(s3c6410_nand_sets),
.sets = s3c6410_nand_sets,
};

(3)注冊nandflah設備

1.在static void __init smdk6410_machine_init(void)函數中添加以下代碼
s3c_nand_set_platdata(&s3c6410_nand_info);

2.添加平台設備

static struct platform_device*anw6410_devices[] __initdata = {

&s3c_device_fb,

&anw6410_lcd_powerdev,

&anw6410_device_eth,

//新添加

&s3c_device_nand,

};

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