[PATCH v5 17/34] bootstd: Add a bootdev command
Simon Glass
sjg at chromium.org
Mon Apr 25 07:31:10 CEST 2022
Add a 'bootdev' command to handle listing and selection of bootdevs.
Disable standard boot for a few boards which otherwise run out of space.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
(no changes since v3)
Changes in v3:
- Use separate Kconfig options for each command
MAINTAINERS | 1 +
cmd/Kconfig | 10 +++
cmd/Makefile | 1 +
cmd/bootdev.c | 120 +++++++++++++++++++++++++++++
configs/rcar3_salvator-x_defconfig | 1 +
configs/tbs2910_defconfig | 1 +
6 files changed, 134 insertions(+)
create mode 100644 cmd/bootdev.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 24e2ad75f82..5a48b841990 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -700,6 +700,7 @@ F: boot/bootdev*.c
F: boot/bootflow.c
F: boot/bootmeth*.c
F: boot/bootstd.c
+F: cmd/bootdev.c
F: include/bootdev*.h
F: include/bootflow.h
F: include/bootmeth.h
diff --git a/cmd/Kconfig b/cmd/Kconfig
index f580797d2d3..a5c69187911 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -211,6 +211,16 @@ config CMD_BOOTM_PRE_LOAD
This stage allow to check or modify the image provided
to the bootm command.
+config CMD_BOOTDEV
+ bool "bootdev"
+ depends on BOOTSTD
+ default y if BOOTSTD_FULL
+ help
+ Support listing available bootdevs (boot devices) which can provide an
+ OS to boot, as well as showing information about a particular one.
+
+ 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 ede634d731c..474f6d55f84 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_CMD_AB_SELECT) += ab_select.o
obj-$(CONFIG_CMD_ADC) += adc.o
obj-$(CONFIG_CMD_ARMFLASH) += armflash.o
obj-$(CONFIG_HAVE_BLOCK_DEVICE) += blk_common.o
+obj-$(CONFIG_CMD_BOOTDEV) += bootdev.o
obj-$(CONFIG_CMD_SOURCE) += source.o
obj-$(CONFIG_CMD_BCB) += bcb.o
obj-$(CONFIG_CMD_BDI) += bdinfo.o
diff --git a/cmd/bootdev.c b/cmd/bootdev.c
new file mode 100644
index 00000000000..ecd797c0503
--- /dev/null
+++ b/cmd/bootdev.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * 'bootdev' command
+ *
+ * Copyright 2021 Google LLC
+ * Written by Simon Glass <sjg at chromium.org>
+ */
+
+#include <common.h>
+#include <bootdev.h>
+#include <bootflow.h>
+#include <bootstd.h>
+#include <command.h>
+#include <dm.h>
+#include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
+
+static int bootdev_check_state(struct bootstd_priv **stdp)
+{
+ struct bootstd_priv *std;
+ int ret;
+
+ ret = bootstd_get_priv(&std);
+ if (ret)
+ return ret;
+ if (!std->cur_bootdev) {
+ printf("Please use 'bootdev select' first\n");
+ return -ENOENT;
+ }
+ *stdp = std;
+
+ return 0;
+}
+
+static int do_bootdev_list(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ bool probe;
+
+ probe = argc >= 2 && !strcmp(argv[1], "-p");
+ bootdev_list(probe);
+
+ return 0;
+}
+
+static int do_bootdev_select(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct bootstd_priv *std;
+ struct udevice *dev;
+ int ret;
+
+ ret = bootstd_get_priv(&std);
+ if (ret)
+ return CMD_RET_FAILURE;
+ if (argc < 2) {
+ std->cur_bootdev = NULL;
+ return 0;
+ }
+ if (bootdev_find_by_any(argv[1], &dev))
+ return CMD_RET_FAILURE;
+
+ std->cur_bootdev = dev;
+
+ return 0;
+}
+
+static int do_bootdev_info(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct bootstd_priv *priv;
+ struct bootflow *bflow;
+ int ret, i, num_valid;
+ struct udevice *dev;
+ bool probe;
+
+ probe = argc >= 2 && !strcmp(argv[1], "-p");
+
+ ret = bootdev_check_state(&priv);
+ if (ret)
+ return CMD_RET_FAILURE;
+
+ dev = priv->cur_bootdev;
+
+ /* Count the number of bootflows, including how many are valid*/
+ num_valid = 0;
+ for (ret = bootdev_first_bootflow(dev, &bflow), i = 0;
+ !ret;
+ ret = bootdev_next_bootflow(&bflow), i++)
+ num_valid += bflow->state == BOOTFLOWST_READY;
+
+ /*
+ * Prove the device, if requested, otherwise assume that there is no
+ * error
+ */
+ ret = 0;
+ if (probe)
+ ret = device_probe(dev);
+
+ printf("Name: %s\n", dev->name);
+ printf("Sequence: %d\n", dev_seq(dev));
+ printf("Status: %s\n", ret ? simple_itoa(ret) : device_active(dev) ?
+ "Probed" : "OK");
+ printf("Uclass: %s\n", dev_get_uclass_name(dev_get_parent(dev)));
+ printf("Bootflows: %d (%d valid)\n", i, num_valid);
+
+ return 0;
+}
+
+#ifdef CONFIG_SYS_LONGHELP
+static char bootdev_help_text[] =
+ "list [-p] - list all available bootdevs (-p to probe)\n"
+ "bootdev select <bd> - select a bootdev by name | label | seq\n"
+ "bootdev info [-p] - show information about a bootdev (-p to probe)";
+#endif
+
+U_BOOT_CMD_WITH_SUBCMDS(bootdev, "Boot devices", bootdev_help_text,
+ U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootdev_list),
+ U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootdev_select),
+ U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootdev_info));
diff --git a/configs/rcar3_salvator-x_defconfig b/configs/rcar3_salvator-x_defconfig
index f333291aa4b..6ef62ab4cbb 100644
--- a/configs/rcar3_salvator-x_defconfig
+++ b/configs/rcar3_salvator-x_defconfig
@@ -14,6 +14,7 @@ CONFIG_SYS_LOAD_ADDR=0x58000000
CONFIG_LTO=y
CONFIG_REMAKE_ELF=y
CONFIG_FIT=y
+# CONFIG_BOOTSTD is not set
CONFIG_SUPPORT_RAW_INITRD=y
CONFIG_SYS_MONITOR_BASE=0x00000000
CONFIG_USE_BOOTARGS=y
diff --git a/configs/tbs2910_defconfig b/configs/tbs2910_defconfig
index 60a816059a6..9f7642f25ca 100644
--- a/configs/tbs2910_defconfig
+++ b/configs/tbs2910_defconfig
@@ -17,6 +17,7 @@ CONFIG_SYS_MEMTEST_END=0x2f400000
CONFIG_LTO=y
CONFIG_HAS_BOARD_SIZE_LIMIT=y
CONFIG_BOARD_SIZE_LIMIT=392192
+# CONFIG_BOOTSTD is not set
CONFIG_SUPPORT_RAW_INITRD=y
CONFIG_BOOTDELAY=3
CONFIG_USE_BOOTCOMMAND=y
--
2.36.0.rc2.479.g8af0fa9b8e-goog
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