Add a 'bootmeth' command to handle listing and ordering of boot methods.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Move bootmeth ordering into the uclass
cmd/Kconfig | 11 +++++ cmd/Makefile | 1 + cmd/bootmeth.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 125 insertions(+) create mode 100644 cmd/bootmeth.c
diff --git a/cmd/Kconfig b/cmd/Kconfig index d1c04f0446f..c87dbe16b8d 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -222,6 +222,17 @@ config CMD_BOOTFLOW_FULL
This command is not necessary for bootstd to work.
+config CMD_BOOTMETH + bool "bootmeth" + depends on BOOTSTD + default y if BOOTSTD_FULL + help + Support listing available bootmethds (methods used to boot an + Operating System), as well as selecting the order that the bootmeths + are used. + + This command is not necessary for bootstd to work. + config BOOTM_EFI bool "Support booting UEFI FIT images" depends on CMD_BOOTEFI && CMD_BOOTM && FIT diff --git a/cmd/Makefile b/cmd/Makefile index 2923bd98860..e7c36e1023e 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_CMD_ARMFLASH) += armflash.o obj-$(CONFIG_HAVE_BLOCK_DEVICE) += blk_common.o obj-$(CONFIG_CMD_BOOTDEV) += bootdev.o obj-$(CONFIG_CMD_BOOTFLOW) += bootflow.o +obj-$(CONFIG_CMD_BOOTMETH) += bootmeth.o obj-$(CONFIG_CMD_SOURCE) += source.o obj-$(CONFIG_CMD_BCB) += bcb.o obj-$(CONFIG_CMD_BDI) += bdinfo.o diff --git a/cmd/bootmeth.c b/cmd/bootmeth.c new file mode 100644 index 00000000000..c9a27fe8ac6 --- /dev/null +++ b/cmd/bootmeth.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * 'bootmeth' command + * + * Copyright 2021 Google LLC + * Written by Simon Glass sjg@chromium.org + */ + +#include <common.h> +#include <bootdev.h> +#include <bootmeth.h> +#include <bootstd.h> +#include <command.h> +#include <dm.h> +#include <malloc.h> +#include <dm/uclass-internal.h> + +static int do_bootmeth_list(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct bootstd_priv *std; + struct udevice *dev; + bool use_order; + bool all = false; + int ret; + int i; + + if (argc > 1 && *argv[1] == '-') { + all = strchr(argv[1], 'a'); + argc--; + argv++; + } + + ret = bootstd_get_priv(&std); + if (ret) { + printf("Cannot get bootstd (err=%d)\n", ret); + return CMD_RET_FAILURE; + } + + printf("Order Seq Name Description\n"); + printf("----- --- ------------------ ------------------\n"); + + /* + * Use the ordering if we have one, so long as we are not trying to list + * all bootmethds + */ + use_order = std->bootmeth_count && !all; + if (use_order) + dev = std->bootmeth_order[0]; + else + ret = uclass_find_first_device(UCLASS_BOOTMETH, &dev); + + for (i = 0; dev;) { + struct bootmeth_uc_plat *ucp = dev_get_uclass_plat(dev); + int order = i; + + /* + * With the -a flag we may list bootdevs that are not in the + * ordering. Find their place in the order + */ + if (all && std->bootmeth_count) { + int j; + + /* Find the position of this bootmeth in the order */ + order = -1; + for (j = 0; j < std->bootmeth_count; j++) { + if (std->bootmeth_order[j] == dev) + order = j; + } + } + + if (order == -1) + printf("%5s", "-"); + else + printf("%5x", order); + printf(" %3x %-19.19s %s\n", dev_seq(dev), dev->name, + ucp->desc); + i++; + if (use_order) + dev = std->bootmeth_order[i]; + else + uclass_find_next_device(&dev); + } + printf("----- --- ------------------ ------------------\n"); + printf("(%d bootmeth%s)\n", i, i != 1 ? "s" : ""); + + return 0; +} + +static int do_bootmeth_order(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int ret; + + ret = bootmeth_set_order(argv[1]); + if (ret) { + printf("Failed (err=%d)\n", ret); + return CMD_RET_FAILURE; + } + env_set("bootmeths", argv[1]); + + return 0; +} + +#ifdef CONFIG_SYS_LONGHELP +static char bootmeth_help_text[] = + "list [-a] - list available bootmeths (-a all)\n" + "bootmeth order [<bd> ...] - select bootmeth order / subset to use"; +#endif + +U_BOOT_CMD_WITH_SUBCMDS(bootmeth, "Boot methods", bootmeth_help_text, + U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootmeth_list), + U_BOOT_SUBCMD_MKENT(order, CONFIG_SYS_MAXARGS, 1, do_bootmeth_order));