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.. comment SPDX-License-Identifier: CC-BY-SA-4.0
.. comment Copyright (c) 2018 embedded brains GmbH
powerpc (PowerPC)
*****************
QorIQ
=====
The BSP for the `QorIQ <https://en.wikipedia.org/wiki/QorIQ>`_ chip family
offers three variants. The `qoriq_e500` variant supports the P-series chips
such as P1020, P2010 and P2020. The `qoriq_e6500_32` (32-bit ISA) and
`qoriq_e6500_64` (64-bit ISA) variants support the T-series chips such as T2080
and T4240. The basic hardware initialization is not performed by the BSP. A
boot loader with device tree support must be used to start the BSP, e.g.
U-Boot.
The BSP is known to run on these boards:
* NXP P1020RDB
* MicroSys miriac MPX2020 (System on Module)
* Artesyn MVME2500 (VME64x SBC)
* NXP T2080RDB
* NXP T4240RDB
* MEN G52A (CompactPCI Serial)
The `qoriq_core_0` and `qoriq_core_1` variants should be used with care. They
are inteded for a `RTEMS_MULTIPROCESSING` configuration on the P1020.
Boot via U-Boot
---------------
The application executable file (ELF file) must be converted to an U-Boot
image. Use the following commands:
::
powerpc-rtems5-objcopy -O binary app.exe app.bin
gzip -9 -f -c app.bin > app.bin.gz
mkimage -A ppc -O linux -T kernel -a 0x4000 -e 0x4000 -n RTEMS -d app.bin.gz app.img
Use the following U-Boot commands to boot an application via TFTP download:
::
tftpboot ${loadaddr} app.img && run loadfdt && bootm ${loadaddr} - ${fdt_addr} ; reset
Clock Driver
------------
The clock driver uses two MPIC global timer (``QORIQ_CLOCK_TIMER`` and
``QORIQ_CLOCK_TIMECOUNTER``). In case ``QORIQ_IS_HYPERVISOR_GUEST`` is
defined, then the PowerPC decrementer is used.
Console Driver
--------------
The console driver supports the on-chip NS16550 compatible UARTs. In case
``QORIQ_IS_HYPERVISOR_GUEST`` is defined, then the EPAPR byte channel is used
for the console device.
Network Interface Driver
------------------------
The network interface driver is provided by the `libbsd`. The DPAA is
supported including 10Gbit/s Ethernet.
Topaz Hypervisor Guest
----------------------
For a Topaz hypervisor guest configuration use:
::
../configure --enable-rtemsbsp=qoriq_e6500_32 \
QORIQ_IS_HYPERVISOR_GUEST=1 \
QORIQ_UART_0_ENABLE=0 \
QORIQ_UART_1_ENABLE=0 \
QORIQ_TLB1_ENTRY_COUNT=16
You may have to adjust the linker command file according to your partition
configuration.
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