| Simon Glass | 15d320d | 2025-01-15 18:27:07 -0700 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Verified Boot for Embedded (VBE) common functions |
| 4 | * |
| 5 | * Copyright 2024 Google LLC |
| 6 | * Written by Simon Glass <sjg@chromium.org> |
| 7 | */ |
| 8 | |
| 9 | #include <part.h> |
| 10 | #include <vsprintf.h> |
| 11 | #include "vbe_common.h" |
| 12 | |
| 13 | int vbe_get_blk(const char *storage, struct udevice **blkp) |
| 14 | { |
| 15 | struct blk_desc *desc; |
| 16 | char devname[16]; |
| 17 | const char *end; |
| 18 | int devnum; |
| 19 | |
| 20 | /* First figure out the block device */ |
| 21 | log_debug("storage=%s\n", storage); |
| 22 | devnum = trailing_strtoln_end(storage, NULL, &end); |
| 23 | if (devnum == -1) |
| 24 | return log_msg_ret("num", -ENODEV); |
| 25 | if (end - storage >= sizeof(devname)) |
| 26 | return log_msg_ret("end", -E2BIG); |
| 27 | strlcpy(devname, storage, end - storage + 1); |
| 28 | log_debug("dev=%s, %x\n", devname, devnum); |
| 29 | |
| 30 | desc = blk_get_dev(devname, devnum); |
| 31 | if (!desc) |
| 32 | return log_msg_ret("get", -ENXIO); |
| 33 | *blkp = desc->bdev; |
| 34 | |
| 35 | return 0; |
| 36 | } |