为uboot-2009.08 添加 dnw usb下载功能

原文地址：【原】为uboot-2009.08 添加 dnw usb下载功能 作者：Apollo5520

1、复制usb slave驱动源代码

创建drivers/usb/slave 目录，复制usb slave驱动源代码到此目录（详见附件）

 

2、修改uboot根目录下的Makefeils，添加红色部分代码

 

LIBS += drivers/usb/musb/libusb_musb.a # Apollo + LIBS += drivers/usb/slave/libusb_slave.a # Apollo - LIBS += drivers/video/libvideo.a

3、修改lib_arm/board.c文件，添加红色部分代码

//Apollo +     Port_Init();     /* enable exceptions */     enable_interrupts ();     usb_init(); //Apollo -

 

4、修改平台头文件，include/configs/utu2440.h，添加红色部分 

#define CONFIG_USB_DEVICE 1 #ifdef CONFIG_USB_DEVICE #define CONFIG_USE_IRQ 1 #endif //#undef CONFIG_USE_IRQ /* we don't need IRQ/FIQ stuff */

5、修改cpu/arm920t/s3c24x0/interrupts.c 文件，添加arch_interrupt_init函数定义

//Apollo +     int arch_interrupt_init (void)     {         return 0;     }     //Apollo -

6、修改cpu/arm920t/start.S，文件

#ifdef CONFIG_USE_IRQ              .align    5     irq:     //Apollo +,此处开始修改     /*         get_irq_stack         irq_save_user_regs         bl    do_irq         irq_restore_user_regs     */     /* use IRQ for USB and DMA */         sub    lr, lr, #4             @ the return address         ldr    sp, IRQ_STACK_START     @ the stack for irq         stmdb  sp!,   { r0-r12,lr }    @ save registers                  ldr    lr,    =int_return         @ set the return addr         ldr    pc, =IRQ_Handle         @ call the isr     int_return:         ldmia  sp!,   { r0-r12,pc }^    @ return from interrupt     //Apollo -，修改结束

 

7、修改include/s3c24x0.h，文件

 

//Apollo +     S3C24X0_REG8    MAXP_REG; //    S3C24X0_REG8    res10[7];     S3C24X0_REG8    res10[3];     S3C24X0_REG8    EP0_CSR_IN_CSR1_REG;     S3C24X0_REG8    res11[3];     S3C24X0_REG8    IN_CSR2_REG; //    S3C24X0_REG8    res12[3];     S3C24X0_REG8    res12[7];     S3C24X0_REG8    OUT_CSR1_REG; //    S3C24X0_REG8    res13[7];     S3C24X0_REG8    res13[3]; //Apollo -

 

8、添加usbslave命令

在common目录下创建cmd_usbslave.c
 

#include <common.h> #include <command.h> #include <asm/byteorder.h> #ifdef CONFIG_USB_DEVICE #ifdef CONFIG_USE_IRQ     #define IRQ_STACK_START    (_armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4)     #define FIQ_STACK_START    (IRQ_STACK_START - CONFIG_STACKSIZE_IRQ)     #define FREE_RAM_END        (FIQ_STACK_START - CONFIG_STACKSIZE_FIQ - CONFIG_STACKSIZE)     #define FREE_RAM_SIZE        (FREE_RAM_END - PHYS_SDRAM_1) #else     #define    FREE_RAM_END    (_armboot_start - CONFIG_SYS_MALLOC_LEN - CONFIG_SYS_GBL_DATA_SIZE - 4 - CONFIG_STACKSIZE)     #define    FREE_RAM_SIZE    (FREE_RAM_END - PHYS_SDRAM_1) #endif int g_bUSBWait = 1; u32 g_dwDownloadLen = 0; extern int download_run; extern volatile unsigned int dwUSBBufBase; extern volatile unsigned int dwUSBBufSize; extern __u32 usb_receive(char *buf, size_t len, unsigned int wait); int do_usbslave (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) {     int i;     size_t len = ~0UL;     char buf[32];     /* download_run为1时表示将文件保存在USB Host发送工具dnw指定的位置      * download_run为0时表示将文件保存在参数argv[2]指定的位置      * 要下载程序到内存，然后直接运行时，要设置download_run=1，这也是这个参数名字的来由      */     download_run = 1;     switch (argc) {         case 1:         {             break;         }         case 2:         {             g_bUSBWait = (int)simple_strtoul(argv[1], NULL, 16);             break;         }         case 3:         {             g_bUSBWait = (int)simple_strtoul(argv[1], NULL, 16);             load_addr = simple_strtoul(argv[2], NULL, 16);             download_run = 0;             break;         }                  default:         {             printf ("Usage:\n%s\n", cmdtp->usage);             return 1;         }     }     dwUSBBufBase = load_addr;     dwUSBBufSize = (FREE_RAM_SIZE&(~(0x80000-1)));     if (g_bUSBWait)         len = FREE_RAM_SIZE;     g_dwDownloadLen = usb_receive(dwUSBBufBase, len, g_bUSBWait);     sprintf(buf, "%X", g_dwDownloadLen);     setenv("filesize", buf);          return 0; } U_BOOT_CMD(     usbslave,    3,    0,    do_usbslave,     "usbslave - get file from host(PC)\n",     "[wait] [loadAddress]\n"     "\"wait\" is 0 or 1, 0 means for return immediately, not waits for the finish of transferring\n" ); #endif

 

修改common/Makefile 

COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o # Apollo + COBJS-$(CONFIG_USB_DEVICE) += cmd_usbslave.o # Apollo -

 

文件: uboot-usb_slave.tar.bz2 大小: 17KB 下载: 下载

 

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