Files
rtems/bsps/sparc/leon3
Daniel Hellstrom cb8379dc09 leon: restart and load timer counter at initialization
Without this smp05 and smpthreadlife01 tests may fail
depending on how the boot loader initialized the GPTIMER.
Before the time counter stopped counting when reaching
zero, but tests could work since it could take 2^32 us
before stopping.

The timer driver will potentially overwrite this, but it
happens later due to the initialization order having
RTEMS_SYSINIT_CPU_COUNTER very early.

Update #4312.
2021-03-07 16:08:25 +01:00
..
2019-01-22 12:46:28 +01:00
2019-01-22 12:46:28 +01:00
2018-04-20 14:32:43 +02:00
2019-01-22 12:46:28 +01:00
2018-01-25 08:45:26 +01:00

#
#  LEON3 BSP README
#
#
#

BSP NAME:           leon3
BUS:                AMBA Plug & Play 
CPU FAMILY:         sparc
CPU:                LEON3
                    

DRIVERS
=======
Timer Driver, Console Driver, Opencores Ethernet Driver

Notes
=====

This BSP supports single LEON3-processor system with minimum peripheral
configuration of one UART. BSP reads system configuration area to get
information such as memory mapping and usage of interrupt resources and
installs device drivers based on this information.

There are no restrictions on memory mapping of UARTS. Console driver
operates in polled mode.

Console driver uses timer 0 of General Purpose Timer and must be configured
to use separate interrupts for each timer. No restrictions on memory mapping.
Interrupt request signal can not be shared with other devices.  

Ethernet MAC core can be mapped in arbitrary memory address space and use
arbitrary interrupt request signal. Interrupt request signal can not be
shared with other devices.