Linux-2.6.32在Mini2440上的移植（二）----移植Nand 驱动并更改分区信息

本移植主要参考友善之臂移植手册完成，做个笔记以备不时之需
Linux-2.6.32 在Mini2440上的移植（二）
使用环境：fedora9
交叉编译工具链：arm-linux-gcc-4.4.3
内核源码来源：
内核存放目录：/opt/mymini2440/linux-2.6.32
说明：红色部分为代码修改部分

(1)在151行附近作如下修改（152-200为添加代码）

149 .lpcsel = ((0xCE6) & ~7) | 1<<4,
150 };
151
152 static struct mtd_partition mini2440_default_nand_part[] = {
153 [0] = {
154 .name = "boot",
155 .size = 0x00040000,
156 .offset = 0,
157 },
158 [1] = {
159 .name = "param",
160 .offset = 0x00040000,
161 .size = 0x00020000,
162 },
163 [2] = {
164 .name = "Kernel",
165 .offset = 0x00060000,
166 .size = 0x00500000,
167 },
168 [3] = {
169 .name = "root",
170 .offset = 0x00560000,
171 .size = 1024 * 1024 * 1024, //
172 },
173 [4] = {
174 .name = "nand",
175 .offset = 0x00000000,
176 .size = 1024 * 1024 * 1024, //
177 }
178 };
179
180 static struct s3c2410_nand_set mini2440_nand_sets[] = {
181 [0] = {
182 .name = "NAND",
183 .nr_chips = 1,
184 .nr_partitions = ARRAY_SIZE(mini2440_default_nand_part),
185 .partitions = mini2440_default_nand_part,
186 },
187 };
188
189 /* choose a set of timings which should suit most 512Mbit
190 * * chips and beyond.
191 * */
192
193 static struct s3c2410_platform_nand mini2440_nand_info = {
194 .tacls = 20,
195 .twrph0 = 60,
196 .twrph1 = 20,
197 .nr_sets = ARRAY_SIZE(mini2440_nand_sets),
198 .sets = mini2440_nand_sets,
199 .ignore_unset_ecc = 1,
200 };

还需要把nand flash 设备注册到系统中208行附近

202 static struct platform_device *mini2440_devices[] __initdata = {
203 &s3c_device_usb,
204 &s3c_device_lcd,
205 &s3c_device_wdt,
206 &s3c_device_i2c0,
207 &s3c_device_iis,
208 &s3c_device_nand,
209 };

在50行附近加入头文件

48 #include <plat/common-smdk.h>
49
50 #include<linux/mtd/mtd.h>
51 #include <linux/mtd/nand.h>
52 #include <linux/mtd/nand_ecc.h>
53 #include <linux/mtd/partitions.h>
54 #include <plat/nand.h>
55
56 static struct map_desc mini2440_iodesc[] __initdata = {

在228行添加如下代码，用于显示分区信息

224 static void __init mini2440_machine_init(void)
225 {
226         s3c24xx_fb_set_platdata(&mini2440_fb_info);
227         s3c_i2c0_set_platdata(NULL);
228         s3c_device_nand.dev.platform_data =&mini2440_nand_info;
229         platform_add_devices(mini2440_devices, ARRAY_SIZE(mini2440_devices));
230 //smdk_machine_init();
231 }

nand分区表修改完毕，接下来移植yaffs2！