This patch adds new Raspberry pi 4B AArch64 BSP to the RTEMS Family. Currently
only LP64 ABI is supported. ILP32 is not supported. RAM starts from 0x80000 in
64Bit kernel mode and MMU from 0x0. All Raspberrypi Pi 4B models and Raspberry
Pi 400 are supported. All the IRQs are similiar to the older Raspberry pi 2 ARM
BSP.
Raspberry Pi 4B has 2 types of UARTs. Only PL011 serial is supported currently.
Mini-UART is not supported. Mini-UART is default UART on the board so it needs
to be disabled by adding "dtoverlay=disable-bt" to the config.txt. No support
for additional 4 PL011-UARTs on the board.
The raspberrypi.h includes many of the address required for the future
development of the RPi 4B BSP. This includes peripherals, ARM Timer, VideoCore
Timer, Watchdog, Mailbox, AUX, FIQs and IRQs.
The Microchip PolarFire SoC support is implemented as a
riscv BSP variant to boot with any individual hart(cpu core)
or SMP based on the boot HARTID configurable and support
components are 4 CPU Cores (U54), Interrupt controller (PLIC),
Timer (CLINT), UART.
There is not just big-endian on ARM. We have two variants BE32
(obsolete) and BE8. The Cortex-R5F processor supports only BE8,
however, some TMS570 variants are BE32 internally. In GCC 8 and later,
the --be8 option is passed to the linker based on the selected
architecture or CPU. Use BE32 by default for the TMS570 BSP.
In GCC, see:
commit 63d03dcecdafe34715282a5155cfc2162375feca
Author: Richard Earnshaw <rearnsha@arm.com>
Date: Mon Jul 3 13:22:05 2017 +0000
[arm] Clean up generation of BE8 format images.
Added support for Cobham Gaisler NOEL-V systems. The NOEL-V support
is implemented as a riscv BSP. Both 32-bit and 64-bit processor
systems are supported. Cobham Gaisler's NOEL-V RISC-V processor IP
is described here:
https://www.gaisler.com/NOELV
Compatible with the following NOEL-V FPGA example design ranges
available from Cobham Gaisler. Follow the links for free
bit-streams, DTS/DTB, user's manuals and quick-start guides:
- NOEL-ARTYA7-EX (https://www.gaisler.com/NOEL-ARTYA7)
- NOEL-PF-EX (https://www.gaisler.com/NOEL-PF)
- NOEL-XCKU-EX (https://www.gaisler.com/NOEL-XCKU)
Uses the shared GRLIB APBUART console driver "apbuart_termios.c".
APBUART devices are probed using device tree.
Closes#4225.
The ABI flags for the amd64 BSP contain the -Werror=return-type flag. There is no reason for this to be there so it has been removed. The same option has also been removed amd64.cfg file.
- Versal has IO mapped to the upper 64bit address space and
needs full 64bit addresses.
- Add xilinx_versal_aiedge for custom hardware
- Make the hardware settings the defaults and qemu as variants
Closes#4693
- Support DDRMC0 region 0 up to 2G in size
- Support DDRMC0 region 1 with DDR memory greater than 2G
up to the DDRMC0 max amount
- Extend the heap with region 1's memory
Closes#4684
The build option definitions were rearranged such that the option
definitions used in the linker script were not available. This caused
linker errors when building.
Sort the .noinit* input sections by name first, then by alignment if two
sections have the same name. This allows the placement of begin/end symbols to
initialize some areas with a special value.
Update #4678.
Use the existing WRITE_SR() abstraction to access the interrupt group 0 and 1
enable registers. This fixes the build for the AArch32 target.
Add BSP options which define the initial values of CPU Interface registers.
There were two bugs with MMU page use that were partially hiding each
other. The linker script page table section was 4x the size it needed to
be and the page table allocation routine was allocating pages PTRSIZE
times larger than it needed to. On ILP32, this resulted in incorrect but
functional allocation. On LP64, this resulted in allocation failures
earlier than expected.
Allow separate optimization flags for the BSP, cpukit, and tests. For example,
the BSP and cpukit may be built without optimization if coverage
instrumentation is enabled, however, the tests may still use optimization.
Update #4670.
The patch "bsps/atsam: Fix type of options" missed to adapt some parts
of the yml. With that a custom value works well. But if no value is set,
configure doesn't fall back to the default value but instead just causes
an error. This patch fixes that.
ATSAM_CONSOLE_DEVICE_INDEX and ATSAM_CONSOLE_DEVICE_TYPE have to be
integers like suggested by their description. Otherwise it's not
possible to select (for example) USART2 as console device.
This is the default configuration of the board out of the box.
Any other possible/supported configuration requires soldering,
so definitely not out of the box experience.
Sponsored-By: Precidata
This patch adds stm32h747i-disco-m4 BSP variant and puts it in sync
with the stm32h747i-disco BSP variant hardware support. That means,
only USART 1, 2 and UART 8 are enabled. Also SDRAM 2 is set to 32MB,
SDRAM 1 size is set to 0.
Sponsored-By: Precidata
This patch disables all U(S)ARTs which are not supported by the board
itself and its provided connectors. That means only USART1 and 2
and UART8 are enabled.
Sponsored-By: Precidata
This is minimalist configuration for the stm32h757i-eval-m4 BSP provided
here. The only general enhancement worth mention is a flash origin address
configuration which is needed for simplification as M4 core boots
from second flash bank which starts at 0x8100000 by default. The boot
address of the core may be changed by using STM32CubeProgrammer. If done
so then also BSP configuration needs to be changed accordingly.
As the BSP variant is running on M4 core, there is also more configuration
changes required here. E.g. boot core and ABI (compilation flags)
in comparison with stm32h757i-eval BSP. On the other hand, C code is shared
completely with this BSP variant.
Sponsored-By: Precidata
This is minimalist configuration for the stm32h757i-eval BSP provided
here. The only general enhancement worth mention is boot core
configuration which is needed here as this is the first dual-core board
supported by stm32h7 BSP family and we need to choose boot core in order
to get C files compiling well.
Sponsored-By: Precidata
