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"Das U-Boot" Source Tree
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * blkmap helper function
4 *
5 * Copyright (c) 2023, Linaro Limited
6 */
7
8#include <blk.h>
9#include <blkmap.h>
10#include <dm/device.h>
11#include <dm/device-internal.h>
12
13int blkmap_create_ramdisk(const char *label, ulong image_addr, ulong image_size,
14 struct udevice **devp)
15{
16 int ret;
17 lbaint_t blknum;
18 struct blkmap *bm;
19 struct blk_desc *desc;
20 struct udevice *bm_dev;
21
22 ret = blkmap_create(label, &bm_dev);
23 if (ret) {
24 log_err("failed to create blkmap\n");
25 return ret;
26 }
27
28 bm = dev_get_plat(bm_dev);
29 desc = dev_get_uclass_plat(bm->blk);
30 blknum = image_size >> desc->log2blksz;
31 ret = blkmap_map_pmem(bm_dev, 0, blknum, image_addr);
32 if (ret) {
33 log_err("Unable to map %#llx at block %d : %d\n",
34 (unsigned long long)image_addr, 0, ret);
35 goto err;
36 }
37 log_info("Block %d+0x" LBAF " mapped to %#llx\n", 0, blknum,
38 (unsigned long long)image_addr);
39
40 ret = device_probe(bm->blk);
41 if (ret)
42 goto err;
43
44 if (devp)
45 *devp = bm_dev;
46
47 return 0;
48
49err:
50 blkmap_destroy(bm_dev);
51
52 return ret;
53}