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expo: Provide a command to dump a cedit expo

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Add a new 'cedit dump' command which dumps the contents of an expo for
debugging.

Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2025-10-09 06:39:28 -06:00
parent 7d91a4b457
commit 9b1ab4b424
3 changed files with 188 additions and 0 deletions
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9
cmd/Kconfig
View File

@@ -485,6 +485,15 @@ config CMD_CEDIT
providing a UI for the user to adjust settings. Subcommands allow
loading and saving of configuration as well as showing an editor.
config CMD_CEDIT_DUMP
bool "Allow dumping the contents of a cedit expo"
depends on CMD_CEDIT && EXPO_DUMP
default y
help
Provides a 'cedit dump' command to dump the expo in a human-readable
format. This can be useful for debugging or for checking that the
expo contains the expected objects.
config CMD_ELF
bool "bootelf"
default y

38
cmd/cedit.c
View File

@@ -14,6 +14,7 @@
#include <fs_legacy.h>
#include <malloc.h>
#include <mapmem.h>
#include <membuf.h>
#include <dm/ofnode.h>
#include <linux/sizes.h>
@@ -291,6 +292,37 @@ static int do_cedit_run(struct cmd_tbl *cmdtp, int flag, int argc,
return 0;
}
#ifdef CONFIG_CMD_EDIT_DUMP
static int do_cedit_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct membuf mb;
char buf[256];
int len;
if (check_cur_expo())
return CMD_RET_FAILURE;
if (membuf_new(&mb, 131072)) {
printf("Failed to allocate membuf\n");
return CMD_RET_FAILURE;
}
expo_dump(cur_exp, &mb);
/* Output the data in chunks */
do {
len = membuf_get(&mb, buf, sizeof(buf) - 1);
buf[len] = '\0';
puts(buf);
} while (len);
membuf_dispose(&mb);
return 0;
}
#endif /* CONFIG_CMD_EDIT_DUMP */
U_BOOT_LONGHELP(cedit,
"load <interface> <dev[:part]> <filename> - load config editor\n"
#ifdef CONFIG_COREBOOT_SYSINFO
@@ -302,6 +334,9 @@ U_BOOT_LONGHELP(cedit,
"cedit write_env [-v] - write settings to env vars\n"
"cedit read_cmos [-v] [dev] - read settings from CMOS RAM\n"
"cedit write_cmos [-v] [dev] - write settings to CMOS RAM\n"
#ifdef CONFIG_CMD_EDIT_DUMP
"cedit dump - dump expo structure\n"
#endif
"cedit run - run config editor");
U_BOOT_CMD_WITH_SUBCMDS(cedit, "Configuration editor", cedit_help_text,
@@ -315,5 +350,8 @@ U_BOOT_CMD_WITH_SUBCMDS(cedit, "Configuration editor", cedit_help_text,
U_BOOT_SUBCMD_MKENT(write_env, 2, 1, do_cedit_write_env),
U_BOOT_SUBCMD_MKENT(read_cmos, 2, 1, do_cedit_read_cmos),
U_BOOT_SUBCMD_MKENT(write_cmos, 2, 1, do_cedit_write_cmos),
#ifdef CONFIG_CMD_EDIT_DUMP
U_BOOT_SUBCMD_MKENT(dump, 1, 1, do_cedit_dump),
#endif
U_BOOT_SUBCMD_MKENT(run, 1, 1, do_cedit_run),
);