This patch reimplements the console driver of the LEON3 BSP, it
has split up the console driver in two parts: Console driver and
UART driver. Before the only UART supported was APBUART and only
on-chip APBUARTs found during startup. However splitting the
driver in two allows any UART interface to reuse the termios
attach code of the console driver, pratically this has always
been a problem when discovering APBUARTs after startup for
example the PCI board GR-RASTA-IO has APBUARTs and must wait
until after PCI has been setup.
Since the only current driver that supports the new console
driver uses the Driver Manager, the new console driver is
only enabled when Driver Manager is initialized during startup.
The new APBUART driver supports:
* polling mode
* interrupt mode
* task-driven mode
* set UART attributes
* read UART attributes (system console inherit settings from
boot loader)
* Driver manager for finding/initialization of the hardware
With this patch the LEON family can access the GRLIB GPTIMER using
the Timer library (TLIB).
A System Clock driver instead of BSP/clock/ck_init.c is provided
using the TLIB. The classic clock driver is split in two parts,
clock driver and timer driver. The BSPs need only to fullfill the
timer interface instead of the clock interface. Currently only
LEON3 uses it. The LEON2 Timer is not ported to TLIB.
The GPTIMER driver is implemented using the Driver Manager, so the
System Clock Driver is at this point only suitable for LEON3 when
the driver manager is initialized during BSP startup. When the DrvMgr
is not initialized during startup the standard BSP/clock dirver is
used.
LEON2 sometimes also needs to access GPTIMER when a off-chip GRLIB AMBA
systems is connected, for example AMBA-over-PCI.
Remove support for using the second timer for time stamping.
Instead the user can configure the system clock timer to a higher
base clock frequency (lower the prescaler). This change does not
affect the GR712RC or LEON4-N2X. The GR712RC does not have two
GPTIMERs and the N2X uses the Interrupt Controller for time
stamping.
Bow that the AMBA initialization code exports the AMBA device,
the frequency can be obtained without an additional AMBA PnP
scanning.
Its now possible to select which timer core will be used for
system clock timer and to control the timer prescaler that
affects all timer instances on that timer core.
The timer and interrupt controller AMBA devices are exported
to make it possible for other code to get detailed information.
For example the frequency of the timer and interrupt controller
is required by the cpucounter support.
Fix some UART register addresses and implementation bugs that
were causing malfunction of console driver on real hardware.
hello and ticker samples are tested and working fine now on mor1kx
based SoC on Atlys FPGA board.
BSP_OR1K_OR1KSIM_PERIPHCLK has been changed to 50MHz as with mor1kx/atlys
SoC; this change has no effect on the current simulators that RTEMS run
on.
This patch adds support for the following devices to the LPC176x BSP:
* CAN
* PWM
* ADC
It also adds the probe routines for UART1/2/3 to the console_device_table in console-config.c, and enables UART1 in configure.ac.
