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Diffstat (limited to 'cmd/bcb.c')
-rw-r--r--cmd/bcb.c221
1 files changed, 125 insertions, 96 deletions
diff --git a/cmd/bcb.c b/cmd/bcb.c
index 97a96c00964..16eabfe00f5 100644
--- a/cmd/bcb.c
+++ b/cmd/bcb.c
@@ -8,6 +8,7 @@
#include <android_bootloader_message.h>
#include <bcb.h>
#include <command.h>
+#include <android_ab.h>
#include <display_options.h>
#include <log.h>
#include <part.h>
@@ -16,15 +17,6 @@
#include <vsprintf.h>
#include <linux/err.h>
-enum bcb_cmd {
- BCB_CMD_LOAD,
- BCB_CMD_FIELD_SET,
- BCB_CMD_FIELD_CLEAR,
- BCB_CMD_FIELD_TEST,
- BCB_CMD_FIELD_DUMP,
- BCB_CMD_STORE,
-};
-
static const char * const fields[] = {
"command",
"status",
@@ -38,67 +30,9 @@ static struct disk_partition partition_data;
static struct blk_desc *block;
static struct disk_partition *partition = &partition_data;
-static int bcb_cmd_get(char *cmd)
-{
- if (!strcmp(cmd, "load"))
- return BCB_CMD_LOAD;
- if (!strcmp(cmd, "set"))
- return BCB_CMD_FIELD_SET;
- if (!strcmp(cmd, "clear"))
- return BCB_CMD_FIELD_CLEAR;
- if (!strcmp(cmd, "test"))
- return BCB_CMD_FIELD_TEST;
- if (!strcmp(cmd, "store"))
- return BCB_CMD_STORE;
- if (!strcmp(cmd, "dump"))
- return BCB_CMD_FIELD_DUMP;
- else
- return -1;
-}
-
-static int bcb_is_misused(int argc, char *const argv[])
+static int bcb_not_loaded(void)
{
- int cmd = bcb_cmd_get(argv[0]);
-
- switch (cmd) {
- case BCB_CMD_LOAD:
- if (argc != 3 && argc != 4)
- goto err;
- break;
- case BCB_CMD_FIELD_SET:
- if (argc != 3)
- goto err;
- break;
- case BCB_CMD_FIELD_TEST:
- if (argc != 4)
- goto err;
- break;
- case BCB_CMD_FIELD_CLEAR:
- if (argc != 1 && argc != 2)
- goto err;
- break;
- case BCB_CMD_STORE:
- if (argc != 1)
- goto err;
- break;
- case BCB_CMD_FIELD_DUMP:
- if (argc != 2)
- goto err;
- break;
- default:
- printf("Error: 'bcb %s' not supported\n", argv[0]);
- return -1;
- }
-
- if (cmd != BCB_CMD_LOAD && !block) {
- printf("Error: Please, load BCB first!\n");
- return -1;
- }
-
- return 0;
-err:
- printf("Error: Bad usage of 'bcb %s'\n", argv[0]);
-
+ printf("Error: Please, load BCB first!\n");
return -1;
}
@@ -216,6 +150,9 @@ static int do_bcb_load(struct cmd_tbl *cmdtp, int flag, int argc,
char *endp;
char *iface = "mmc";
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
if (argc == 4) {
iface = argv[1];
argc--;
@@ -270,6 +207,12 @@ static int __bcb_set(const char *fieldp, const char *valp)
static int do_bcb_set(struct cmd_tbl *cmdtp, int flag, int argc,
char * const argv[])
{
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ if (!block)
+ return bcb_not_loaded();
+
return __bcb_set(argv[1], argv[2]);
}
@@ -279,6 +222,9 @@ static int do_bcb_clear(struct cmd_tbl *cmdtp, int flag, int argc,
int size;
char *field;
+ if (!block)
+ return bcb_not_loaded();
+
if (argc == 1) {
memset(&bcb, 0, sizeof(bcb));
return CMD_RET_SUCCESS;
@@ -297,7 +243,15 @@ static int do_bcb_test(struct cmd_tbl *cmdtp, int flag, int argc,
{
int size;
char *field;
- char *op = argv[2];
+ char *op;
+
+ if (argc < 4)
+ return CMD_RET_USAGE;
+
+ if (!block)
+ return bcb_not_loaded();
+
+ op = argv[2];
if (bcb_field_get(argv[1], &field, &size))
return CMD_RET_FAILURE;
@@ -325,6 +279,12 @@ static int do_bcb_dump(struct cmd_tbl *cmdtp, int flag, int argc,
int size;
char *field;
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ if (!block)
+ return bcb_not_loaded();
+
if (bcb_field_get(argv[1], &field, &size))
return CMD_RET_FAILURE;
@@ -356,6 +316,9 @@ err:
static int do_bcb_store(struct cmd_tbl *cmdtp, int flag, int argc,
char * const argv[])
{
+ if (!block)
+ return bcb_not_loaded();
+
return __bcb_store();
}
@@ -414,44 +377,75 @@ void bcb_reset(void)
__bcb_reset();
}
-static struct cmd_tbl cmd_bcb_sub[] = {
- U_BOOT_CMD_MKENT(load, CONFIG_SYS_MAXARGS, 1, do_bcb_load, "", ""),
- U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 1, do_bcb_set, "", ""),
- U_BOOT_CMD_MKENT(clear, CONFIG_SYS_MAXARGS, 1, do_bcb_clear, "", ""),
- U_BOOT_CMD_MKENT(test, CONFIG_SYS_MAXARGS, 1, do_bcb_test, "", ""),
- U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_bcb_dump, "", ""),
- U_BOOT_CMD_MKENT(store, CONFIG_SYS_MAXARGS, 1, do_bcb_store, "", ""),
-};
-
-static int do_bcb(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+__maybe_unused static int do_bcb_ab_select(struct cmd_tbl *cmdtp,
+ int flag, int argc,
+ char * const argv[])
{
- struct cmd_tbl *c;
+ int ret;
+ struct blk_desc *dev_desc;
+ struct disk_partition part_info;
+ char slot[2];
+ bool dec_tries = true;
- if (argc < 2)
+ if (argc < 4)
return CMD_RET_USAGE;
- argc--;
- argv++;
+ for (int i = 4; i < argc; i++) {
+ if (!strcmp(argv[i], "--no-dec"))
+ dec_tries = false;
+ else
+ return CMD_RET_USAGE;
+ }
+
+ /* Lookup the "misc" partition from argv[2] and argv[3] */
+ if (part_get_info_by_dev_and_name_or_num(argv[2], argv[3],
+ &dev_desc, &part_info,
+ false) < 0) {
+ return CMD_RET_FAILURE;
+ }
+
+ ret = ab_select_slot(dev_desc, &part_info, dec_tries);
+ if (ret < 0) {
+ printf("Android boot failed, error %d.\n", ret);
+ return CMD_RET_FAILURE;
+ }
+
+ /* Android standard slot names are 'a', 'b', ... */
+ slot[0] = BOOT_SLOT_NAME(ret);
+ slot[1] = '\0';
+ env_set(argv[1], slot);
+ printf("ANDROID: Booting slot: %s\n", slot);
- c = find_cmd_tbl(argv[0], cmd_bcb_sub, ARRAY_SIZE(cmd_bcb_sub));
- if (!c)
+ return CMD_RET_SUCCESS;
+}
+
+__maybe_unused static int do_bcb_ab_dump(struct cmd_tbl *cmdtp,
+ int flag, int argc,
+ char *const argv[])
+{
+ int ret;
+ struct blk_desc *dev_desc;
+ struct disk_partition part_info;
+
+ if (argc < 3)
return CMD_RET_USAGE;
- if (bcb_is_misused(argc, argv)) {
- /*
- * We try to improve the user experience by reporting the
- * root-cause of misusage, so don't return CMD_RET_USAGE,
- * since the latter prints out the full-blown help text
- */
+ if (part_get_info_by_dev_and_name_or_num(argv[1], argv[2],
+ &dev_desc, &part_info,
+ false) < 0) {
+ return CMD_RET_FAILURE;
+ }
+
+ ret = ab_dump_abc(dev_desc, &part_info);
+ if (ret < 0) {
+ printf("Cannot dump ABC data, error %d.\n", ret);
return CMD_RET_FAILURE;
}
- return c->cmd(cmdtp, flag, argc, argv);
+ return CMD_RET_SUCCESS;
}
-U_BOOT_CMD(
- bcb, CONFIG_SYS_MAXARGS, 1, do_bcb,
- "Load/set/clear/test/dump/store Android BCB fields",
+U_BOOT_LONGHELP(bcb,
"load <interface> <dev> <part> - load BCB from <interface> <dev>:<part>\n"
"load <dev> <part> - load BCB from mmc <dev>:<part>\n"
"bcb set <field> <val> - set BCB <field> to <val>\n"
@@ -460,6 +454,27 @@ U_BOOT_CMD(
"bcb dump <field> - dump BCB <field>\n"
"bcb store - store BCB back to <interface>\n"
"\n"
+#if IS_ENABLED(CONFIG_ANDROID_AB)
+ "bcb ab_select -\n"
+ " Select the slot used to boot from and register the boot attempt.\n"
+ " <slot_var_name> <interface> <dev[:part|#part_name]> [--no-dec]\n"
+ " - Load the slot metadata from the partition 'part' on\n"
+ " device type 'interface' instance 'dev' and store the active\n"
+ " slot in the 'slot_var_name' variable. This also updates the\n"
+ " Android slot metadata with a boot attempt, which can cause\n"
+ " successive calls to this function to return a different result\n"
+ " if the returned slot runs out of boot attempts.\n"
+ " - If 'part_name' is passed, preceded with a # instead of :, the\n"
+ " partition name whose label is 'part_name' will be looked up in\n"
+ " the partition table. This is commonly the \"misc\" partition.\n"
+ " - If '--no-dec' is set, the number of tries remaining will not\n"
+ " decremented for the selected boot slot\n"
+ "\n"
+ "bcb ab_dump -\n"
+ " Dump boot_control information from specific partition.\n"
+ " <interface> <dev[:part|#part_name]>\n"
+ "\n"
+#endif
"Legend:\n"
"<interface> - storage device interface (virtio, mmc, etc)\n"
"<dev> - storage device index containing the BCB partition\n"
@@ -472,3 +487,17 @@ U_BOOT_CMD(
" NOTE: any ':' character in <val> will be replaced by line feed\n"
" during 'bcb set' and used as separator by upper layers\n"
);
+
+U_BOOT_CMD_WITH_SUBCMDS(bcb,
+ "Load/set/clear/test/dump/store Android BCB fields", bcb_help_text,
+ U_BOOT_SUBCMD_MKENT(load, 4, 1, do_bcb_load),
+ U_BOOT_SUBCMD_MKENT(set, 3, 1, do_bcb_set),
+ U_BOOT_SUBCMD_MKENT(clear, 2, 1, do_bcb_clear),
+ U_BOOT_SUBCMD_MKENT(test, 4, 1, do_bcb_test),
+ U_BOOT_SUBCMD_MKENT(dump, 2, 1, do_bcb_dump),
+ U_BOOT_SUBCMD_MKENT(store, 1, 1, do_bcb_store),
+#if IS_ENABLED(CONFIG_ANDROID_AB)
+ U_BOOT_SUBCMD_MKENT(ab_select, 5, 1, do_bcb_ab_select),
+ U_BOOT_SUBCMD_MKENT(ab_dump, 3, 1, do_bcb_ab_dump),
+#endif
+);
generated by cgit v1.2.3 (git 2.0.4) at 2025-08-03 12:00:20 +0000