diff options
Diffstat (limited to 'doc/usage')
| -rw-r--r-- | doc/usage/environment.rst | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/doc/usage/environment.rst b/doc/usage/environment.rst index 561076bac9..7906ace2af 100644 --- a/doc/usage/environment.rst +++ b/doc/usage/environment.rst @@ -106,6 +106,27 @@ many cases the value in the default environment comes from a CONFIG option - see This is most-likely not complete: +autostart + If set to "yes" (actually any string starting with 1, y, Y, t, or T) an + image loaded with one of the commands listed below will be automatically + started by internally invoking the bootm command. + + * bootelf - Boot from an ELF image in memory + * bootp - boot image via network using BOOTP/TFTP protocol + * dhcp - boot image via network using DHCP/TFTP protocol + * diskboot - boot from ide device + * nboot - boot from NAND device + * nfs - boot image via network using NFS protocol + * rarpboot - boot image via network using RARP/TFTP protocol + * scsiboot - boot from SCSI device + * tftpboot - boot image via network using TFTP protocol + * usbboot - boot from USB device + + If the environment variable autostart is not set to a value starting with + 1, y, Y, t, or T, an image passed to the "bootm" command will be copied to + the load address (and eventually uncompressed), but NOT be started. + This can be used to load and uncompress arbitrary data. + baudrate Used to set the baudrate of the UART - it defaults to CONFIG_BAUDRATE (which defaults to 115200). @@ -174,19 +195,6 @@ autoload configuration from the BOOTP server, but not try to load any image. -autostart - if set to "yes", an image loaded using the "bootp", "dhcp", - "rarpboot", "tftpboot" or "diskboot" commands will - be automatically started (by internally calling - "bootm") - - If unset, or set to "1"/"yes"/"true" (case insensitive, just the first - character is enough), a standalone image - passed to the "bootm" command will be copied to the load address - (and eventually uncompressed), but NOT be started. - This can be used to load and uncompress arbitrary - data. - fdt_high if set this restricts the maximum address that the flattened device tree will be copied into upon boot. |