bloblist: Add a command
It is helpful to be able to see basic statistics about the bloblist and
also to list its contents. Add a 'bloblist' command to handle this.
Put the display functions in the bloblist modules rather than in the
command code itself. That allows showing a list from SPL, where commands
are not available.
Also make bloblist_first/next_blob() static as they are not used outside
this file.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 999b6cf..b25d2b0 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -631,6 +631,15 @@
Compute binary operations (xor, or, and) of byte arrays of arbitrary
size from memory and store the result in memory or the environment.
+config CMD_BLOBLIST
+ bool "bloblist"
+ default y if BLOBLIST
+ help
+ Show information about the bloblist, a collection of binary blobs
+ held in memory that persist between SPL and U-Boot. In the case of
+ x86 devices the bloblist can be used to hold ACPI tables so that they
+ remain available in memory.
+
config CMD_CRC32
bool "crc32"
default y
diff --git a/cmd/Makefile b/cmd/Makefile
index c7a08ed..015b837 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -24,6 +24,7 @@
obj-$(CONFIG_CMD_BEDBUG) += bedbug.o
obj-$(CONFIG_CMD_BIND) += bind.o
obj-$(CONFIG_CMD_BINOP) += binop.o
+obj-$(CONFIG_CMD_BLOBLIST) += bloblist.o
obj-$(CONFIG_CMD_BLOCK_CACHE) += blkcache.o
obj-$(CONFIG_CMD_BMP) += bmp.o
obj-$(CONFIG_CMD_BOOTCOUNT) += bootcount.o
diff --git a/cmd/bloblist.c b/cmd/bloblist.c
new file mode 100644
index 0000000..bb2e682
--- /dev/null
+++ b/cmd/bloblist.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Command-line access to bloblist features
+ *
+ * Copyright 2020 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <bloblist.h>
+#include <command.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int do_bloblist_info(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ bloblist_show_stats();
+
+ return 0;
+}
+
+static int do_bloblist_list(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ bloblist_show_list();
+
+ return 0;
+}
+
+static char bloblist_help_text[] =
+ "info - show information about the bloblist\n"
+ "bloblist list - list blobs in the bloblist";
+
+U_BOOT_CMD_WITH_SUBCMDS(bloblist, "Bloblists", bloblist_help_text,
+ U_BOOT_SUBCMD_MKENT(info, 1, 1, do_bloblist_info),
+ U_BOOT_SUBCMD_MKENT(list, 1, 1, do_bloblist_list));