开发板：fl2440
Linux内核：linux-3.0
1.添加USB结构体变量，加厂商ID和设备ID
[zoulei@CentOS linux-3.0]$vim arch/arm/mach-s3c2440/mach-smdk2440.c
--- mach1-smdk2440.c 2017-04-15 06:12:36.061000246 -0700
+++ mach2-smdk2440.c 2017-04-15 06:21:30.015999978 -0700
@@ -13,6 +13,7 @@
*
*/
+#include <linux/dm9000.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
@@ -22,6 +23,12 @@
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/io.h>
+/* add by zoulei for norflash */
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -44,9 +51,45 @@
#include <plat/clock.h>
#include <plat/devs.h>
#include <plat/cpu.h>
-
+#include <plat/ts.h> /*Add by zoulei to support Touch screen, 2017.04.15*/
+#include <mach/regs-clock.h> /*Add by zoulei 2017.04.15, for usb_s3c2440_init() */
+#include <linux/i2c.h> /*Add by zoulei 2017.4.15, for AT24C512 driver */
+#include <linux/i2c/at24.h> /*Add by zoulei 2017.4.15, for AT24C512 driver */
+#include <linux/delay.h>
#include <plat/common-smdk.h>
+#define DM9000_BASE (S3C2410_CS4 + 0x300)
+static struct resource s3c_dm9000_resource[] = {
+ [0] = {
+ .start = DM9000_BASE,
+ .end = DM9000_BASE + 3,
+ .flags = IORESOURCE_MEM
+ },
+ [1] = {
+ .start = DM9000_BASE + 4,
+ .end = DM9000_BASE + 7,
+ .flags = IORESOURCE_MEM
+ },
+ [2] = {
+ .start = IRQ_EINT7,
+ .end = IRQ_EINT7,
+ .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
+ }
+};
+
+static struct dm9000_plat_data s3c_dm9000_pdata = {
+ .flags = (DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM),
+};
+static struct platform_device s3c_device_dm9000 = {
+ .name = "dm9000",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(s3c_dm9000_resource),
+ .resource = s3c_dm9000_resource,
+ .dev = {
+ .platform_data = &s3c_dm9000_pdata,
+ },
+};
+
static struct map_desc smdk2440_iodesc[] __initdata = {
/* ISA IO Space map (memory space selected by A24) */
@@ -155,13 +198,30 @@
&s3c_device_wdt,
&s3c_device_i2c0,
&s3c_device_iis,
+ &s3c_device_dm9000,
};
+/* Add by zoulei 2017.04.15, fix device descriptor read/64, error -62 bug, value refer to datasheet P255 */
+int usb_s3c2440_init(void)
+{
+ /* Input Frequency is 12.0000MHz, and MDEV=0x38 PDIV=2 SDIV=2, so output frequency 48.00MHz */
+ unsigned long upllvalue = (0x38<<12)|(0x02<<4)|(0x02);
+ while (upllvalue != __raw_readl(S3C2410_UPLLCON))
+ {
+ __raw_writel(upllvalue, S3C2410_UPLLCON);
+ mdelay(1);
+ }
+
+ return 0;
+}
+
+
static void __init smdk2440_map_io(void)
{
s3c24xx_init_io(smdk2440_iodesc, ARRAY_SIZE(smdk2440_iodesc));
- s3c24xx_init_clocks(16934400);
+ s3c24xx_init_clocks(12000000);
s3c24xx_init_uarts(smdk2440_uartcfgs, ARRAY_SIZE(smdk2440_uartcfgs));
+ usb_s3c2440_init(); /* Add by zoulei, 2017.04.15 */
}
static void __init smdk2440_machine_init(void)
##################################################
[zoulei@CentOS linux-3.0]$ vim drivers/usb/serial/option.c
--- option.c 2017-04-15 06:06:17.470001485 -0700
+++ option1.c 2017-04-15 05:47:14.996001503 -0700
@@ -50,7 +50,14 @@
static int option_send_setup(struct usb_serial_port *port);
static void option_instat_callback(struct urb *urb);
-/* Vendor and product IDs */
+ /* Vendor and product IDs */
+static int vendor = 0; /* Add by zoulei */
+static int product = 0; /* Add by zoulei */
+
+/* Vendor and product IDs */
+#define OPTION_VENDOR_RESERVED 0xFFFF /* Add by zoulei */
+#define OPTION_RESERVED_DEVICE 0xFFFF /* Add by zoulei */
+
#define OPTION_VENDOR_ID 0x0AF0
#define OPTION_PRODUCT_COLT 0x5000
#define OPTION_PRODUCT_RICOLA 0x6000
@@ -446,7 +453,8 @@
.reason = OPTION_BLACKLIST_SENDSETUP
};
-static const struct usb_device_id option_ids[] = {
+static struct usb_device_id option_ids[] = {
+ { USB_DEVICE(OPTION_VENDOR_RESERVED, OPTION_RESERVED_DEVICE) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
@@ -1079,6 +1087,15 @@
static int __init option_init(void)
{
int retval;
+
+ if ((vendor>0) && (product>0))
+ {
+ option_ids[0].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
+ option_ids[0].idVendor = vendor;
+ option_ids[0].idProduct = product;
+ printk("Register option drvier for modem vendor=0x%04x product=0x%04x\n", vendor, product);
+ }
+
retval = usb_serial_register(&option_1port_device);
if (retval)
goto failed_1port_device_register;
2.添加U盘支持
[zoulei@CentOS linux-3.0]$ make menuconfig
Device Drivers --->
Generic Driver Options --->
(/sbin/hotplug) path to uevent helper //配置u盘的热插拔
[*] Block devices --->
<*> Low Performance USB Block driver //低性能USB块设备驱动
SCSI device support --->
<*> SCSI device support //SCSI设备的支持
[*] legacy /proc/scsi/ support
<*> SCSI disk support //是对 USB 鼠标键盘的支持
<*> SCSI generic support //SCSI通用的支持
[*] Probe all LUNs on each SCSI device //所有在每个SCSI LUN探针装置
[*] HID Devices --->
<*> USB Human Interface Device (full HID) support //是对 USB 鼠标键盘的支持
[*] /dev/hiddev raw HID device support
[*] USB support --->
<*> Support for Host-side USB //主机端USB支持
[*] USB device filesystem (DEPRECATED) //USB设备文件系统（不推荐使用）
[*] USB device class-devices (DEPRECATED) / /USB设备类设备（不推荐使用）
<*> USB Monitor //USB监控
<*> OHCI HCD support //支持OHCI标准
<*> USB Mass Storage support //支持USB海量存储
File systems ---> //配置u盘的文件系统
DOS/FAT/NT Filesystems --->
<*> MSDOS fs support
<*> VFAT (Windows-95) fs support
(437) Default codepage for FAT //默认代码页
(iso8859-1) Default iocharset for FAT //默认字符集
-*- Native language support ---> //配置u盘的语言格式支持
--- Native language support
<*> Codepage 437 (United States, Canada)
<*> Simplified Chinese charset (CP936, GB2312)
<*> ASCII (United States)
<*> NLS UTF-8
3.自动挂载：
[zoulei@centos6 ~]$ cd /home/zoulei/opt/rootfs/etc
[zoulei@centos6 etc]$ vim mdev.conf
sd[a-z][0-9] 0:0 0777 @(mount /dev/$MDEV /mnt/usb)
sd[a-z] 0:0 0777 $(umount /mnt/usb)
#ub[a-z][0-9] 0:0 0777 @(mount /dev/$MDEV /mnt/usb)
#ub[a-z] 0:0 0777 $(umount /mnt/usb)
mmcblk[0-9]p[0-9] 0:0 0777 @(mount /dev/$MDEV /mnt/sdc)
mmcblk[0-9] 0:0 0777 $(umount /mnt/sdc)
注意：根文件树加了这个配置文件就可以自动挂载了，否则就需要手动挂载：mount /dev/sda /mnt/usb
如果你的U盘在板子上显示是sd，也可能有的设备是ub，这时候进入你的根文件树查看是否自动挂载
sd的设备后置a-z或者0-9都可以显示自动挂载 ub的设备后置从a-z可以显示自动挂载，如果你的ub设备显示数字，可将第三行改为
#ub[a-z][0-9] 0:0 0777 @(mount /dev/$MDEV /mnt/usb)
mmcblk的设备也是如此。
4.开发板上操作
当插上U盘后开发板上显示:
>: usb 1-1.1: new full speed USB device number 3 using s3c2410-ohci
scsi0 : usb-storage 1-1.1:1.0
scsi 0:0:0:0: Direct-Access UDISK PDU15_1G 71G2.0 0.00 PQ: 0 ANSI: 2
sd 0:0:0:0: [sda] 2015231 512-byte logical blocks: (1.03 GB/983 MiB)
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Asking for cache data failed
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Asking for cache data failed
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 0:0:0:0: [sda] Asking for cache data failed
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk
查看挂载到/mnt/usb目录，可以看到里面有我的u盘的内容，说明U盘移植成功了！
已经添加了中文支持。可是u盘还是显示不了中文。
遇到的问题及解决方法:
问题1.
>: usb 1-1.2: new full speed USB device number 3 using s3c2410-ohci
scsi0 : usb-storage 1-1.2:1.0
JFFS2 notice: (769) check_node_data: wrong data CRC in data node at 0x00bc06f8: read 0x45e69e3e, calculated 0x21c8152d.
JFFS2 notice: (769) check_node_data: wrong data CRC in data node at 0x0109c890: read 0x10e5206a, calculated 0x8be51971.
scsi 0:0:0:0: Direct-Access UDISK PDU15_1G 71G2.0 0.00 PQ: 0 ANSI: 2
scsi 0:0:0:0: Attached scsi generic sg0 type 0
>: usb 1-1.2: USB disconnect, device number 3
usb 1-1.1: new full speed USB device number 4 using s3c2410-ohci
scsi1 : usb-storage 1-1.1:1.0
scsi 1:0:0:0: Direct-Access UDISK PDU15_1G 71G2.0 0.00 PQ: 0 ANSI: 2
scsi 1:0:0:0: Attached scsi generic sg0 type 0
解决：插上U盘后开发板上只显示这么少的信息，而且查看我的U盘会有错误显示！
说明有很多内核配置我没选上，于是又再选上支持usb,u盘的选项
问题2：
>: mount /dev/sda1 /mnt/usb/
mount: mounting /dev/sda1 on /mnt/usb/ failed: Device or resource busy
解决：因为内核是自动挂载的，当然这是自己在根文件系统树里面配置的，如果你已经自动挂载，
那么再手动挂载就会显示设备资源忙的提示。
问题3.
>: usb 1-1.1: new full speed USB device number 3 using s3c2410-ohci
scsi0 : usb-storage 1-1.1:1.0
scsi 0:0:0:0: Direct-Access UDISK PDU15_1G 71G2.0 0.00 PQ: 0 ANSI: 2
sd 0:0:0:0: [sda] 2015231 512-byte logical blocks: (1.03 GB/983 MiB)
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Asking for cache data failed
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Asking for cache data failed
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 0:0:0:0: [sda] Asking for cache data failed
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk
FAT-fs (sda1): codepage cp437 not found
FAT-fs (sda1): codepage cp437 not found
FAT-fs (sda1): IO charset iso8859-1 not found
解决：内核没有选上Codepage 437，在--- Native language support 里面选上就可以了！