[PATCH 2/2] user: Add documentation for leon2 and leon3 BSP

[Daniel Cederman]

---
 user/bsps/bsps-sparc.rst | 74 ++++++++++++++++++++++++++++++++++++++--
 1 file changed, 72 insertions(+), 2 deletions(-)

diff --git a/user/bsps/bsps-sparc.rst b/user/bsps/bsps-sparc.rst
index d0316a9..a2c2a47 100644
--- a/user/bsps/bsps-sparc.rst
+++ b/user/bsps/bsps-sparc.rst
@@ -20,11 +20,81 @@ TODO.
 leon2
 =====
 
-TODO.
+This BSP supports LEON2 systems, in particular the `Microchip AT697F
+<https://www.microchip.com/en-us/product/AT697F>`_. The following
+default build configurations are provided:
+
+* leon2 - A generic LEON2 system with memory at 0x4000000.
+
+* at697f - For the AT697F. Built with ``-mcpu=leon3 -mfix-ut700``.
+
+The BSP contains UART, timer, and interrupt controller drivers.
+Drivers for PCI are available through the :ref:`driver manager <BSP_sparc_leon3_drv_mgr>`.
 
 .. _BSP_sparc_leon3:
 
 leon3
 =====
 
-TODO.
+This BSP supports the LEON3/4/5 systems from Cobham Gaisler.
+The following default build configurations are provided:
+
+* leon3 - A generic `LEON3/4/5 <https://www.gaisler.com/leon5>`_ system with memory at 0x4000000.
+
+* ut700 - For the `UT700 <https://caes.com/product/ut700>`_. Built with ``-mcpu=leon3 -mfix-ut700``.
+
+* ut699 - For the `UT699 <https://caes.com/product/ut699>`_. Built with ``-mcpu=leon -mfix-ut699``.
+
+* gr712rc - For the `GR712RC <https://www.gaisler.com/gr712rc>`_. Built with ``-mcpu=leon3 -mfix-gr712rc``.
+
+* gr740 - For the `GR740  <https://www.gaisler.com/gr740>`_. Memory located at address 0x0.
+
+The BSP contains UART, timer, and interrupt controller drivers. Drivers for additional
+peripherals are available through the driver manager.
+
+.. _BSP_sparc_leon3_drv_mgr:
+
+Driver Manager
+--------------
+
+The leon3 BSP includes an optional driver manager that handles drivers and
+devices on the AMBA and PCI Plug & Play buses. The driver manager can either
+be initialized manually by the user, or started automatically on startup by
+setting the ``RTEMS_DRVMGR_STARTUP`` option. It can be configured to
+automatically instantiate a driver for each hardware device found.
+
+Drivers for the following devices are provided and handled via the driver manager:
+
+* SpaceWire (GRSPW, GRSPW2)
+* SpaceWire Router (GRSPWROUTER)
+* SpaceWire Time Distribution Protocol (SPWTDP)
+* CAN - non-DMA (OCCAN) and DMA (GRCAN, GRCANFD)
+- GPIO (GRGPIO)
+- L2 Cache (L2CACHE)
+- IOMMU (GRIOMMU)
+- ADC/DAC (GRADCDAC)
+- Timers (GPTIMER, GRTIMER)
+- 1553 BC, RT and BM support (GR1553B)
+- I2C Master (I2CMST)
+- PCI (GRPCI2, GRPCI, PCIF)
+- Memory Controller (MCTRL)
+- Memory Scrubber (MEMSCRUB)
+- Pulse Width Modulation Generator (GRPWM)
+- CCSDS/ECSS Telemetry Encoder/Decoder (GRTM/GRTC)
+- CSDS Time Manager (GRCTM)
+- Ethernet (GRETH 10/100/1000) (requires network stack)
+- Performance counters (L4STAT)
+- Serial Peripheral Interface (AHBSTAT)
+- AHB Status (AHBSTAT)
+
+Build Configuration Options
+---------------------------
+
+The following options can be used in the BSP section of the ``waf``
+configuration INI file. The ``waf`` defaults can be used to inspect the values.
+
+``CONSOLE_USE_INTERRUPTS``
+     Use the Termios interrupt mode in the console driver (false by default).
+
+``RTEMS_DRVMGR_STARTUP``
+     Enable the Driver Manager at startup (false by default).
-- 
2.34.1