在UBOOT代码中找到uboot从USB引导启动部分，想问一下有没有大神实现过？
没有的话我就开始折腾了
复制代码- #ifdef CONFIG_ROCKCHIP_USB_BOOT
- static int boot_from_udisk(void)
- {
- struct blk_desc *desc;
- char *devtype;
- char *devnum;
- devtype = env_get("devtype");
- devnum = env_get("devnum");
- /* Booting priority: mmc1 > udisk */
- if (!strcmp(devtype, "mmc") && !strcmp(devnum, "1"))
- return 0;
- if (!run_command("usb start", -1)) {
- desc = blk_get_devnum_by_type(IF_TYPE_USB, 0);
- if (!desc) {
- printf("No usb device found\n");
- return -ENODEV;
- }
- if (!run_command("rkimgtest usb 0", -1)) {
- rockchip_set_bootdev(desc);
- env_set("devtype", "usb");
- env_set("devnum", "0");
- printf("Boot from usb 0\n");
- } else {
- printf("No usb dev 0 found\n");
- return -ENODEV;
- }
- }
- return 0;
- }
- #endif
|
