--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2023 Addiva Elektronik
+ * Author: Tobias Waldekranz <tobias@waldekranz.com>
+ */
+
+#include <blk.h>
+#include <blkmap.h>
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <dm/device.h>
+
+static int blkmap_curr_dev;
+
+struct map_ctx {
+ struct udevice *dev;
+ lbaint_t blknr, blkcnt;
+};
+
+typedef int (*map_parser_fn)(struct map_ctx *ctx, int argc, char *const argv[]);
+
+struct map_handler {
+ const char *name;
+ map_parser_fn fn;
+};
+
+int do_blkmap_map_linear(struct map_ctx *ctx, int argc, char *const argv[])
+{
+ struct blk_desc *lbd;
+ int err, ldevnum;
+ lbaint_t lblknr;
+
+ if (argc < 4)
+ return CMD_RET_USAGE;
+
+ ldevnum = dectoul(argv[2], NULL);
+ lblknr = dectoul(argv[3], NULL);
+
+ lbd = blk_get_devnum_by_uclass_idname(argv[1], ldevnum);
+ if (!lbd) {
+ printf("Found no device matching \"%s %d\"\n",
+ argv[1], ldevnum);
+ return CMD_RET_FAILURE;
+ }
+
+ err = blkmap_map_linear(ctx->dev, ctx->blknr, ctx->blkcnt,
+ lbd->bdev, lblknr);
+ if (err) {
+ printf("Unable to map \"%s %d\" at block 0x" LBAF ": %d\n",
+ argv[1], ldevnum, ctx->blknr, err);
+
+ return CMD_RET_FAILURE;
+ }
+
+ printf("Block 0x" LBAF "+0x" LBAF " mapped to block 0x" LBAF " of \"%s %d\"\n",
+ ctx->blknr, ctx->blkcnt, lblknr, argv[1], ldevnum);
+ return CMD_RET_SUCCESS;
+}
+
+int do_blkmap_map_mem(struct map_ctx *ctx, int argc, char *const argv[])
+{
+ phys_addr_t addr;
+ int err;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ addr = hextoul(argv[1], NULL);
+
+ err = blkmap_map_pmem(ctx->dev, ctx->blknr, ctx->blkcnt, addr);
+ if (err) {
+ printf("Unable to map %#llx at block 0x" LBAF ": %d\n",
+ (unsigned long long)addr, ctx->blknr, err);
+ return CMD_RET_FAILURE;
+ }
+
+ printf("Block 0x" LBAF "+0x" LBAF " mapped to %#llx\n",
+ ctx->blknr, ctx->blkcnt, (unsigned long long)addr);
+ return CMD_RET_SUCCESS;
+}
+
+struct map_handler map_handlers[] = {
+ { .name = "linear", .fn = do_blkmap_map_linear },
+ { .name = "mem", .fn = do_blkmap_map_mem },
+
+ { .name = NULL }
+};
+
+static int do_blkmap_map(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ struct map_handler *handler;
+ struct map_ctx ctx;
+
+ if (argc < 5)
+ return CMD_RET_USAGE;
+
+ ctx.dev = blkmap_from_label(argv[1]);
+ if (!ctx.dev) {
+ printf("\"%s\" is not the name of any known blkmap\n", argv[1]);
+ return CMD_RET_FAILURE;
+ }
+
+ ctx.blknr = hextoul(argv[2], NULL);
+ ctx.blkcnt = hextoul(argv[3], NULL);
+ argc -= 4;
+ argv += 4;
+
+ for (handler = map_handlers; handler->name; handler++) {
+ if (!strcmp(handler->name, argv[0]))
+ return handler->fn(&ctx, argc, argv);
+ }
+
+ printf("Unknown map type \"%s\"\n", argv[0]);
+ return CMD_RET_USAGE;
+}
+
+static int do_blkmap_create(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ const char *label;
+ int err;
+
+ if (argc != 2)
+ return CMD_RET_USAGE;
+
+ label = argv[1];
+
+ err = blkmap_create(label, NULL);
+ if (err) {
+ printf("Unable to create \"%s\": %d\n", label, err);
+ return CMD_RET_FAILURE;
+ }
+
+ printf("Created \"%s\"\n", label);
+ return CMD_RET_SUCCESS;
+}
+
+static int do_blkmap_destroy(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ struct udevice *dev;
+ const char *label;
+ int err;
+
+ if (argc != 2)
+ return CMD_RET_USAGE;
+
+ label = argv[1];
+
+ dev = blkmap_from_label(label);
+ if (!dev) {
+ printf("\"%s\" is not the name of any known blkmap\n", label);
+ return CMD_RET_FAILURE;
+ }
+
+ err = blkmap_destroy(dev);
+ if (err) {
+ printf("Unable to destroy \"%s\": %d\n", label, err);
+ return CMD_RET_FAILURE;
+ }
+
+ printf("Destroyed \"%s\"\n", label);
+ return CMD_RET_SUCCESS;
+}
+
+static int do_blkmap_get(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ struct udevice *dev;
+ const char *label;
+ int err;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ label = argv[1];
+
+ dev = blkmap_from_label(label);
+ if (!dev) {
+ printf("\"%s\" is not the name of any known blkmap\n", label);
+ return CMD_RET_FAILURE;
+ }
+
+ if (!strcmp(argv[2], "dev")) {
+ if (argc == 3) {
+ printf("%d\n", dev_seq(dev));
+ } else {
+ err = env_set_hex(argv[3], dev_seq(dev));
+ if (err)
+ return CMD_RET_FAILURE;
+ }
+ } else {
+ return CMD_RET_USAGE;
+ }
+
+ return CMD_RET_SUCCESS;
+}
+
+static int do_blkmap_common(struct cmd_tbl *cmdtp, int flag,
+ int argc, char *const argv[])
+{
+ /* The subcommand parsing pops the original argv[0] ("blkmap")
+ * which blk_common_cmd expects. Push it back again.
+ */
+ argc++;
+ argv--;
+
+ return blk_common_cmd(argc, argv, UCLASS_BLKMAP, &blkmap_curr_dev);
+}
+
+U_BOOT_CMD_WITH_SUBCMDS(
+ blkmap, "Composeable virtual block devices",
+ "info - list configured devices\n"
+ "blkmap part - list available partitions on current blkmap device\n"
+ "blkmap dev [<dev>] - show or set current blkmap device\n"
+ "blkmap read <addr> <blk#> <cnt>\n"
+ "blkmap write <addr> <blk#> <cnt>\n"
+ "blkmap get <label> dev [<var>] - store device number in variable\n"
+ "blkmap create <label> - create device\n"
+ "blkmap destroy <label> - destroy device\n"
+ "blkmap map <label> <blk#> <cnt> linear <interface> <dev> <blk#> - device mapping\n"
+ "blkmap map <label> <blk#> <cnt> mem <addr> - memory mapping\n",
+ U_BOOT_SUBCMD_MKENT(info, 2, 1, do_blkmap_common),
+ U_BOOT_SUBCMD_MKENT(part, 2, 1, do_blkmap_common),
+ U_BOOT_SUBCMD_MKENT(dev, 4, 1, do_blkmap_common),
+ U_BOOT_SUBCMD_MKENT(read, 5, 1, do_blkmap_common),
+ U_BOOT_SUBCMD_MKENT(write, 5, 1, do_blkmap_common),
+ U_BOOT_SUBCMD_MKENT(get, 5, 1, do_blkmap_get),
+ U_BOOT_SUBCMD_MKENT(create, 2, 1, do_blkmap_create),
+ U_BOOT_SUBCMD_MKENT(destroy, 2, 1, do_blkmap_destroy),
+ U_BOOT_SUBCMD_MKENT(map, 32, 1, do_blkmap_map));
projects / platform / kernel / u-boot.git / commitdiff