aTCA-3710 User's Guide
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Table 8. LMP State Transition Descriptions
Transition
Name
Conditions
RESET->INIT_ON_FLASH
R1
The bootloader is present at the boot flash.
INIT_ON_FLASH->RESET
F0
The CFD watchdog disable processing fails in 2 sec after Reset.
INIT_ON_FLASH->INIT_ON_RAM
F1
The program jumps to the bootloader code region in the DRAM.
INIT_ON_RAM->RESET
M0
The BMC watchdog disable processing fails in 30 sec after entering
INIT_ON_RAM state.
INIT_ON_RAM->BOOTING_OS
M1
An OS loading command is saved into the Bootcmd environment
variables.
INIT_ON_RAM->BOOTER_PROMPT
M2
The bootcmd environment variable are not present or the OS loading
command is not correct..
BOOTER_PROMPT->RESET
P0
Reset command is performed.
BOOTER_PROMPT->BOOTING_OS
P1
The OS loading command is performed.
BOOTING_OS->RESET
O0
The BMC watchdog timeout triggered by the bootloader occurs.
BOOTING_OS->IN_SERVICE
O1
The OS application defined as LMP services run normally.
BOOTING_OS->IN_TESTING
O2
Enters into the OS test mode.
IN_SERVICE->RESET
S0
The reboot commandis performed.
IN_SERVICE->IN_TESTING
S1
The OS application defined as an LMP service halts some functions.
IN_TESTING->RESET
T0
The reboot commandis performed.
IN_TESTING->IN_TESTING
T1
The OS application defined as LMP services runs normally.
6.5 Boot
Sequence
The boot sequence of devices with a CPU core is illustrated in Figure 11. The IPMC is responsible for
initiation of the booting sequence. The states in the boot sequence are summarized in Table 9.
Figure 11. aTCA-3710 Boot Sequence
Table 9. Boot Sequence State Descriptions
Host
Process
Conditions
IPMC
BOOTING_LMP
Configures the LMP boot flash and resets the LMP.
Refer to Figure 4-1 LMP U-boot booting flow.
LMP_INIT
Initializes associated devices.
Refer to Figure 4-1 LMP U-boot booting flow.
LMP
LMP_BOOTING
Triggers the LMP OS booting.
Refer to Figure 4-2 LMP OS booting flow
