BSP and Device Driver Development Guide
Although not strictly part of initialization, there are a few global
variables assumed to exist by many support components. These
global variables are usually declared in the file startup/bspstart.c
that provides most of the BSP specific initialization. The following is
a list of these global variables:
BSP_Configuration is the BSP's writable copy of the RTEMS
Configuration Table.
Cpu_table is the RTEMS CPU Dependent Information Table.
bsp_isr_level is the interrupt level that is set at
system startup. It will be restored when the executive returns
control to the BSP.
BSP and Device Driver Development Guide
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