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LIBS += drivers/usb/musb/libusb_musb.a

# Apollo +

LIBS += drivers/usb/slave/libusb_slave.a

# Apollo -

LIBS += drivers/video/libvideo.a

//Apollo +

    Port_Init();
    /* enable exceptions */
    enable_interrupts ();
    usb_init();

//Apollo -


#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 */

    //Apollo +

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



    #ifdef CONFIG_USE_IRQ
    
        .align    5
    irq:
    //Apollo +,此處開始修改
    /*
        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 -，修改結束


//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 -

#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為1時表示將文件保存在USB Host發(fā)送工具dnw指定的位置
     * download_run為0時表示將文件保存在參數(shù)argv[2]指定的位置
     * 要下載程序到內(nèi)存，然后直接運行時，要設置download_run=1，這也是這個參數(shù)名字的來由
     */
    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


COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o

# Apollo +

COBJS-$(CONFIG_USB_DEVICE) += cmd_usbslave.o

# Apollo -

原創(chuàng)文章，轉載請注明：轉載自 風雨無阻博客（http://Apollo5520.cublog.cn）

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