为uboot-2009.08 添加 dnw usb下载功能

2024年5月2日 互联网
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         { r0- r12, lr }    @ save registers
        
        ldr    lr,     = int_return         @ set the return addr
        ldr    pc, = IRQ_Handle         @ call the isr
    int_return:
        ldmia         { 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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