I have this uboot
VERSION = 2017 PATCHLEVEL = 03
I am trying to silent the console using the silent variable.I defined this `#define CONFIG_SILENT_CONSOLE` So at boot time I am interrupting the console, and entering
setenv silent 1 save reset
Now after reset, or power on reset I try again get console logs.After seeing env variables
printenv
I see my saved variable correctly in env varibles
silent=1
but still u-boot is not silent. I suspect this function is failing at checking for this env variable,
char *getenv(const char *name) { if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ ENTRY e, *ep;
WATCHDOG_RESET();
e.key = name; e.data = NULL; hsearch_r(e, FIND, &ep, &env_htab, 0); /*this function is maybe returning*/
return ep ? ep->data : NULL; }
/* restricted capabilities before import */ if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0) return (char *)(gd->env_buf);
return NULL; }
But what exactly is happening? Is there something like before relocation time env variables and after relocation env variables because the function,
static void console_update_silent(void) { #ifdef CONFIG_SILENT_CONSOLE if (getenv("silent") != NULL){ puts("silent"); gd->flags |= GD_FLG_SILENT; } else{ puts("Non silent"); gd->flags &= ~GD_FLG_SILENT; } #endif }
/* Called before relocation - use serial functions */ int console_init_f(void) { gd->have_console = 1;
console_update_silent();
print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL); return 0; }
`console_init_f` says its before relocation. I have put some prints to see and always gets non silent, even if I have saved the silent variable,
I am using a sd card to boot(mmc), I don't have any debugger, so I I tried printing default environment, as
env print default ## Error: "default" not defined
So there is not default environment too.
Any tips or help will make me understand.
P.S.
I explicitly defined silent in `#define CONFIG_EXTRA_ENV_SETTINGS` Now u-boot is silent.
Doing a `setenv silent` should remove this from env variable, and I can see that its gone, but still on reboot my uboot is silent. So something about environment variable is clearly mystery to me.
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