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bootm: Update bootm_process_cmdline_env() to use flags

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At present only one transformation is supported: making the Linux console
silent. To prepare for adding more, convert the boolean parameter into a
flag value.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2020-11-05 10:33:44 -07:00 committed by Tom Rini
parent b6386f3841
commit b3c01678fd
3 changed files with 19 additions and 10 deletions
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8
common/bootm.c
View file

@ -542,16 +542,17 @@ static int fixup_silent_linux(char *buf, int maxlen)
return 0;
}
int bootm_process_cmdline_env(bool do_silent)
int bootm_process_cmdline_env(int flags)
{
const int maxlen = MAX_CMDLINE_SIZE;
bool do_silent;
const char *env;
char *buf;
int ret;
/* First check if any action is needed */
do_silent = IS_ENABLED(CONFIG_SILENT_CONSOLE) &&
!IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) && do_silent;
!IS_ENABLED(CONFIG_SILENT_U_BOOT_ONLY) && (flags & BOOTM_CL_SILENT);
if (!do_silent)
return 0;
@ -685,7 +686,8 @@ int do_bootm_states(struct cmd_tbl *cmdtp, int flag, int argc,
if (!ret && (states & BOOTM_STATE_OS_BD_T))
ret = boot_fn(BOOTM_STATE_OS_BD_T, argc, argv, images);
if (!ret && (states & BOOTM_STATE_OS_PREP)) {
ret = bootm_process_cmdline_env(images->os.os == IH_OS_LINUX);
ret = bootm_process_cmdline_env(images->os.os == IH_OS_LINUX ?
BOOTM_CL_SILENT : 0);
if (ret) {
printf("Cmdline setup failed (err=%d)\n", ret);
ret = CMD_RET_FAILURE;

11
include/bootm.h
View file

@ -75,6 +75,13 @@ void board_quiesce_devices(void);
*/
void switch_to_non_secure_mode(void);
/* Flags to control bootm_process_cmdline() */
enum bootm_cmdline_t {
BOOTM_CL_SILENT = 1 << 0, /* Do silent console processing */
BOOTM_CL_ALL = 1, /* All substitutions */
};
/**
* arch_preboot_os() - arch specific configuration before booting
*/
@ -91,9 +98,9 @@ void board_preboot_os(void);
* Updates the 'bootargs' envvar as required. This handles making Linux boot
* silently if requested ('silent_linux' envvar)
*
* @do_silent: Process bootargs for silent console
* @flags: Flags to control what happens (see bootm_cmdline_t)
* @return 0 if OK, -ENOMEM if out of memory
*/
int bootm_process_cmdline_env(bool do_silent);
int bootm_process_cmdline_env(int flags);
#endif

10
test/bootm.c
View file

@ -23,26 +23,26 @@ static int bootm_test_silent_var(struct unit_test_state *uts)
/* 'silent_linux' not set should do nothing */
env_set("silent_linux", NULL);
env_set("bootargs", CONSOLE_STR);
ut_assertok(bootm_process_cmdline_env(true));
ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
ut_asserteq_str(CONSOLE_STR, env_get("bootargs"));
env_set("bootargs", NULL);
ut_assertok(bootm_process_cmdline_env(true));
ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
ut_assertnull(env_get("bootargs"));
ut_assertok(env_set("silent_linux", "no"));
env_set("bootargs", CONSOLE_STR);
ut_assertok(bootm_process_cmdline_env(true));
ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
ut_asserteq_str(CONSOLE_STR, env_get("bootargs"));
ut_assertok(env_set("silent_linux", "yes"));
env_set("bootargs", CONSOLE_STR);
ut_assertok(bootm_process_cmdline_env(true));
ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
ut_asserteq_str("console=", env_get("bootargs"));
/* Empty buffer should still add the string */
env_set("bootargs", NULL);
ut_assertok(bootm_process_cmdline_env(true));
ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
ut_asserteq_str("console=", env_get("bootargs"));
return 0;