U-Boot SPL 2026.10-00819-g5926a8390f31-dirty (Oct 15 2026 - 20:06:29 +0800) Fail to detect board:-2 vdd_core, value:900000 vdd_1v8, value:1800000 vdd_1v8_mmc, value:1800000 DDR firmware: [0xc081d740]:0xf0227179, size:0x8d98 DDR is ready No SPI controller (-19) Trying to boot from MMC2 U-Boot 2026.10-00819-g5926a8390f31-dirty (Oct 15 2026 - 20:06:29 +0800) DRAM: 4 GiB Core: 347 devices, 24 uclasses, devicetree: separate MMC: mmc@d4280000: 1, mmc@d4281000: 0 Loading Environment from nowhere... OK In: serial@d4017000 Out: serial@d4017000 Err: serial@d4017000 Net: No ethernet found. => usb start starting USB... USB XHCI 1.10 Bus usb@c0a00000: 5 USB Device(s) found scanning usb for storage devices... 1 Storage Device(s) found => random 0x10000000 0x8000 32768 bytes filled with random data => usb write 0x10000000 0x1000 0x40 usb write: device 0 block # 4096, count 64 ... 64 blocks written: OK => usb read 0x20000000 0x1000 0x40 usb read: device 0 block # 4096, count 64 ... 64 blocks read: OK => cmp.q 0x10000000 0x20000000 0x1000 Total of 4096 double word(s) were the same => fatls usb 0 6 hello 16777216 random 2 file(s), 0 dir(s) => md 0x10000000 10 10000000: 486c234f 4cb10ced c8bfd51b 71892eb5 O#lH...L.......q 10000010: dfab37da 93554532 459001ab f10d2c59 .7..2EU....EY,.. 10000020: c442e55a 85d4ccee 95695b8a 7d10d446 Z.B......[i.F..} 10000030: 949cd6ca c6f7ace8 5e3c1efd 6199d18c ..........<^...a => fatload usb 0 0x10000000 hello 6 bytes read in 1 ms (5.9 KiB/s) => md 0x10000000 10 10000000: 6c6c6568 4cb10a6f c8bfd51b 71892eb5 hello..L.......q 10000010: dfab37da 93554532 459001ab f10d2c59 .7..2EU....EY,.. 10000020: c442e55a 85d4ccee 95695b8a 7d10d446 Z.B......[i.F..} 10000030: 949cd6ca c6f7ace8 5e3c1efd 6199d18c ..........<^...a => fatload usb 0 0x10000000 random 16777216 bytes read in 845 ms (18.9 MiB/s) => md5sum -v 0x10000000 0x1000000 4b57085d9e949a98dca4e79a23fc4c35 => md5sum 0x10000000 0x1000000 md5 for 10000000 ... 10ffffff ==> 4b57085d9e949a98dca4e79a23fc4c35 =>