as a convenience, when switching between booting from
RAM and NFS.
-- Bootcount:
- CONFIG_BOOTCOUNT_LIMIT
- Implements a mechanism for detecting a repeating reboot
- cycle, see:
- http://www.denx.de/wiki/view/DULG/UBootBootCountLimit
-
- CONFIG_BOOTCOUNT_ENV
- If no softreset save registers are found on the hardware
- "bootcount" is stored in the environment. To prevent a
- saveenv on all reboots, the environment variable
- "upgrade_available" is used. If "upgrade_available" is
- 0, "bootcount" is always 0, if "upgrade_available" is
- 1 "bootcount" is incremented in the environment.
- So the Userspace Applikation must set the "upgrade_available"
- and "bootcount" variable to 0, if a boot was successfully.
-
- Pre-Boot Commands:
CONFIG_PREBOOT
key for the Replay Protection Memory Block partition in eMMC.
- USB Device Firmware Update (DFU) class support:
- CONFIG_USB_FUNCTION_DFU
+ CONFIG_DFU_OVER_USB
This enables the USB portion of the DFU USB class
CONFIG_DFU_MMC
You can fine tune the DHCP functionality by defining
CONFIG_BOOTP_* symbols:
- CONFIG_BOOTP_SUBNETMASK
- CONFIG_BOOTP_GATEWAY
- CONFIG_BOOTP_HOSTNAME
CONFIG_BOOTP_NISDOMAIN
- CONFIG_BOOTP_BOOTPATH
CONFIG_BOOTP_BOOTFILESIZE
- CONFIG_BOOTP_DNS
- CONFIG_BOOTP_DNS2
CONFIG_BOOTP_SEND_HOSTNAME
CONFIG_BOOTP_NTPSERVER
CONFIG_BOOTP_TIMEOFFSET
to Link-local IP address configuration if the DHCP server
is not available.
- CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS
- serverip from a DHCP server, it is possible that more
- than one DNS serverip is offered to the client.
- If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS
- serverip will be stored in the additional environment
- variable "dnsip2". The first DNS serverip is always
- stored in the variable "dnsip", when CONFIG_BOOTP_DNS
- is defined.
-
CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable
to do a dynamic update of a DNS server. To do this, they
need the hostname of the DHCP requester.
#define CONFIG_NFS_TIMEOUT 10000UL
- Command Interpreter:
- CONFIG_AUTO_COMPLETE
-
- Enable auto completion of commands using TAB.
-
CONFIG_SYS_PROMPT_HUSH_PS2
This defines the secondary prompt string, which is
symbols.
- Command Line Editing and History:
- CONFIG_CMDLINE_EDITING
-
- Enable editing and History functions for interactive
- command line input operations
-
-- Command Line PS1/PS2 support:
CONFIG_CMDLINE_PS_SUPPORT
Enable support for changing the command prompt string
the environment like the "source" command or the
boot command first.
- CONFIG_ENV_VARS_UBOOT_CONFIG
-
- Define this in order to add variables describing the
- U-Boot build configuration to the default environment.
- These will be named arch, cpu, board, vendor, and soc.
-
- Enabling this option will cause the following to be defined:
-
- - CONFIG_SYS_ARCH
- - CONFIG_SYS_CPU
- - CONFIG_SYS_BOARD
- - CONFIG_SYS_VENDOR
- - CONFIG_SYS_SOC
-
CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
Define this in order to add variables describing certain
but sometimes that is not allowed.
- bootcount support:
- CONFIG_BOOTCOUNT_LIMIT
-
- This enables the bootcounter support, see:
- http://www.denx.de/wiki/DULG/UBootBootCountLimit
-
CONFIG_AT91SAM9XE
enable special bootcounter support on at91sam9xe based boards.
- CONFIG_SOC_DA8XX
- enable special bootcounter support on da850 based boards.
- CONFIG_BOOTCOUNT_RAM
- enable support for the bootcounter in RAM
- CONFIG_BOOTCOUNT_I2C
- enable support for the bootcounter on an i2c (like RTC) device.
- CONFIG_SYS_I2C_RTC_ADDR = i2c chip address
- CONFIG_SYS_BOOTCOUNT_ADDR = i2c addr which is used for
- the bootcounter.
- CONFIG_BOOTCOUNT_ALEN = address len
- CONFIG_BOOTCOUNT_EXT
- enable support for the bootcounter in EXT filesystem
- CONFIG_SYS_BOOTCOUNT_ADDR = RAM address used for read
- and write.
- CONFIG_SYS_BOOTCOUNT_EXT_INTERFACE = interface
- CONFIG_SYS_BOOTCOUNT_EXT_DEVPART = device and part
- CONFIG_SYS_BOOTCOUNT_EXT_NAME = filename
- Show boot progress:
CONFIG_SHOW_BOOT_PROGRESS
projects / people / ms / u-boot.git / blobdiff