diff options
Diffstat (limited to 'doc/README.autoboot')
| -rw-r--r-- | doc/README.autoboot | 43 |
1 files changed, 22 insertions, 21 deletions
diff --git a/doc/README.autoboot b/doc/README.autoboot index c763578486..c971bb141d 100644 --- a/doc/README.autoboot +++ b/doc/README.autoboot @@ -67,13 +67,13 @@ What they do CONFIG_BOOT_RETRY_TIME CONFIG_BOOT_RETRY_MIN - bootretry environment variable + "bootretry" environment variable These options determine what happens after autoboot is stopped and U-Boot is waiting for commands. CONFIG_BOOT_RETRY_TIME must be defined to enable the boot - retry feature. If the environment variable 'bootretry' is + retry feature. If the environment variable "bootretry" is found then its value is used, otherwise the retry timeout is CONFIG_BOOT_RETRY_TIME. CONFIG_BOOT_RETRY_MIN is optional and defaults to CONFIG_BOOT_RETRY_TIME. All times are in seconds. @@ -87,7 +87,7 @@ What they do If CONFIG_BOOT_RETRY_TIME < 0 the feature is there, but doesn't do anything unless the environment variable - 'bootretry' is >= 0. + "bootretry" is >= 0. CONFIG_AUTOBOOT_KEYED CONFIG_AUTOBOOT_PROMPT @@ -96,10 +96,10 @@ What they do CONFIG_AUTOBOOT_DELAY_STR2 CONFIG_AUTOBOOT_STOP_STR2 - bootdelaykey environment variable - bootstopkey environment variable - bootdelaykey2 environment variable - bootstopkey2 environment variable + "bootdelaykey" environment variable + "bootstopkey" environment variable + "bootdelaykey2" environment variable + "bootstopkey2" environment variable These options give more control over stopping autoboot. When they are used a specific character or string is required to @@ -119,17 +119,17 @@ What they do down the seconds. "autoboot in %d seconds\n" is a reasonable prompt. - If CONFIG_AUTOBOOT_DELAY_STR or bootdelaykey is specified and - this string is received from console input before autoboot - starts booting, U-Boot gives a command prompt. The U-Boot - prompt will time out if CONFIG_BOOT_RETRY_TIME is used, - otherwise it never times out. + If CONFIG_AUTOBOOT_DELAY_STR or "bootdelaykey" is specified + and this string is received from console input before + autoboot starts booting, U-Boot gives a command prompt. The + U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is + used, otherwise it never times out. - If CONFIG_AUTOBOOT_STOP_STR or bootstopkey is specified and - this string is received from console input before autoboot - starts booting, U-Boot gives a command prompt. The U-Boot - prompt never times out, even if CONFIG_BOOT_RETRY_TIME is - used. + If CONFIG_AUTOBOOT_STOP_STR or "bootstopkey" is specified and + this string is received from console input before autoboot + starts booting, U-Boot gives a command prompt. The U-Boot + prompt never times out, even if CONFIG_BOOT_RETRY_TIME is + used. The string recognition is not very sophisticated. If a partial match is detected, the first non-matching character @@ -138,10 +138,11 @@ What they do character of a key string does not appear in the rest of the string. - Using the CONFIG_AUTOBOOT_DELAY_STR2 / bootdelaykey2 and/or - CONFIG_AUTOBOOT_STOP_STR2 / bootstopkey #defines and/or - environment variables you can specify a second, alternate - string (which allows you to have two "password" strings). + Using the CONFIG_AUTOBOOT_DELAY_STR2 #define or the + "bootdelaykey2" environment variable and/or the + CONFIG_AUTOBOOT_STOP_STR2 #define or the "bootstopkey" + environment variable you can specify a second, alternate + string (which allows you to have two "password" strings). CONFIG_ZERO_BOOTDELAY_CHECK |