WhyCan Forum(哇酷开发者社区)

#define CONFIG_BOOTCOMMAND   "sf probe 0 50000000; "                           \
                             "sf read 0x41000000 0x0F0000  0x10000; "  \
                             "sf read 0x41010000 0x100000 0x600000; " \
                             "bootz 0x41010000 - 0x41000000"

static inline uint32_t read32(uint32_t addr)
{
    return( *((volatile uint32_t *)(addr)) );
}

static inline void write32(uint32_t addr, uint32_t value)
{
    *((volatile uint32_t *)(addr)) = value;
}

void sys_uart_putc(char c)
{
    unsigned int addr = 0x01c28000;

    while((read32(addr + 0x7c) & (0x1 << 1)) == 0);
    write32(addr + 0x00, c);
}

static void putstr(const char *ptr)
{
    char c;

    while ((c = *ptr++) != '\0') {
        if (c == '\n')
            sys_uart_putc('\r');
        sys_uart_putc(c);
    }

    flush();
}