dany/u-boot-megous
1
0
Fork 0
mirror of https://xff.cz/git/u-boot/ synced 2025-09-01 00:32:04 +02:00
Code Issues Packages Projects Releases Wiki Activity

avb2.0: add boot states and dm-verity support

Browse Source 
1. Add initial support of boot states mode (red, green, yellow)
2. Add functions for enforcing dm-verity configurations

Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>
This commit is contained in:
Igor Opaniuk
2018-06-03 21:56:40 +03:00
committed by Tom Rini
parent 60b2f9e7b9
commit 5d4fd87773
3 changed files with 168 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

137
common/avb_verify.c
View File

@@ -117,6 +117,137 @@ const unsigned char avb_root_pub[1032] = {
0xd8, 0x7e,
};
/**
* ============================================================================
* Boot states support (GREEN, YELLOW, ORANGE, RED) and dm_verity
* ============================================================================
*/
char *avb_set_state(AvbOps *ops, enum avb_boot_state boot_state)
{
struct AvbOpsData *data;
char *cmdline = NULL;
if (!ops)
return NULL;
data = (struct AvbOpsData *)ops->user_data;
if (!data)
return NULL;
data->boot_state = boot_state;
switch (boot_state) {
case AVB_GREEN:
cmdline = "androidboot.verifiedbootstate=green";
break;
case AVB_YELLOW:
cmdline = "androidboot.verifiedbootstate=yellow";
break;
case AVB_ORANGE:
cmdline = "androidboot.verifiedbootstate=orange";
case AVB_RED:
break;
}
return cmdline;
}
char *append_cmd_line(char *cmdline_orig, char *cmdline_new)
{
char *cmd_line;
if (!cmdline_new)
return cmdline_orig;
if (cmdline_orig)
cmd_line = cmdline_orig;
else
cmd_line = " ";
cmd_line = avb_strdupv(cmd_line, " ", cmdline_new, NULL);
return cmd_line;
}
static int avb_find_dm_args(char **args, char *str)
{
int i;
if (!str)
return -1;
for (i = 0; i < AVB_MAX_ARGS, args[i]; ++i) {
if (strstr(args[i], str))
return i;
}
return -1;
}
static char *avb_set_enforce_option(const char *cmdline, const char *option)
{
char *cmdarg[AVB_MAX_ARGS];
char *newargs = NULL;
int i = 0;
int total_args;
memset(cmdarg, 0, sizeof(cmdarg));
cmdarg[i++] = strtok((char *)cmdline, " ");
do {
cmdarg[i] = strtok(NULL, " ");
if (!cmdarg[i])
break;
if (++i >= AVB_MAX_ARGS) {
printf("%s: Can't handle more then %d args\n",
__func__, i);
return NULL;
}
} while (true);
total_args = i;
i = avb_find_dm_args(&cmdarg[0], VERITY_TABLE_OPT_LOGGING);
if (i >= 0) {
cmdarg[i] = (char *)option;
} else {
i = avb_find_dm_args(&cmdarg[0], VERITY_TABLE_OPT_RESTART);
if (i < 0) {
printf("%s: No verity options found\n", __func__);
return NULL;
}
cmdarg[i] = (char *)option;
}
for (i = 0; i <= total_args; i++)
newargs = append_cmd_line(newargs, cmdarg[i]);
return newargs;
}
char *avb_set_ignore_corruption(const char *cmdline)
{
char *newargs = NULL;
newargs = avb_set_enforce_option(cmdline, VERITY_TABLE_OPT_LOGGING);
if (newargs)
newargs = append_cmd_line(newargs,
"androidboot.veritymode=eio");
return newargs;
}
char *avb_set_enforce_verity(const char *cmdline)
{
char *newargs;
newargs = avb_set_enforce_option(cmdline, VERITY_TABLE_OPT_RESTART);
if (newargs)
newargs = append_cmd_line(newargs,
"androidboot.veritymode=enforcing");
return newargs;
}
/**
* ============================================================================
* IO(mmc) auxiliary functions
@@ -478,7 +609,7 @@ static AvbIOResult read_rollback_index(AvbOps *ops,
u64 *out_rollback_index)
{
/* For now we always return 0 as the stored rollback index. */
printf("TODO: implement %s.\n", __func__);
printf("%s not supported yet\n", __func__);
if (out_rollback_index)
*out_rollback_index = 0;
@@ -502,7 +633,7 @@ static AvbIOResult write_rollback_index(AvbOps *ops,
u64 rollback_index)
{
/* For now this is a no-op. */
printf("TODO: implement %s.\n", __func__);
printf("%s not supported yet\n", __func__);
return AVB_IO_RESULT_OK;
}
@@ -522,7 +653,7 @@ static AvbIOResult read_is_device_unlocked(AvbOps *ops, bool *out_is_unlocked)
{
/* For now we always return that the device is unlocked. */
printf("TODO: implement %s.\n", __func__);
printf("%s not supported yet\n", __func__);
*out_is_unlocked = true;