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2021-10-13microblaze: Rework for RTEMS 6Alex White1-104/+0
This reworks the existing MicroBlaze architecture port and BSP to achieve basic functionality using the latest RTEMS APIs.
2021-10-13bsps: Add MicroBlaze FPGA BSPHesham ALMatary1-72/+8
2021-05-27bsps/aarch64: Add MMU driver to relax alignmentKinsey Moore1-0/+7
Currently, the AArch64 BSPs have a hard time running on real hardware without building the toolchain and the bsps with -mstrict-align in multiple places. Configuring the MMU on these chips allows for unaligned memory accesses for non-device memory which avoids requiring strict alignment in the toolchain and in the BSPs themselves. In writing this driver, it was found that the synchronous exception handling code needed to be rewritten since it relied on clearing SCTLR_EL1 to avoid thread stack misalignments in RTEMS_DEBUG mode. This is now avoided by exactly preserving thread mode stack and flags and the new implementation is compatible with the draft information provided on the mailing list covering the Exception Management API.
2020-10-05bsps: Add Cortex-A53 LP64 basic BSPKinsey Moore1-21/+30
This adds an AArch64 basic BSP based on Qemu's Cortex-A53 emulation with interrupt support using GICv3 and clock support using the ARM GPT.
2020-09-17bsps/arm: Use RTEMS_SECTION()Sebastian Huber1-6/+12
2019-03-08bsps: Adjust shared Doxygen groupsSebastian Huber1-1/+1
Update #3706.
2018-06-27Rework initialization and interrupt stack supportSebastian Huber1-22/+1
Statically initialize the interrupt stack area (_Configuration_Interrupt_stack_area_begin, _Configuration_Interrupt_stack_area_end, and _Configuration_Interrupt_stack_size) via <rtems/confdefs.h>. Place the interrupt stack area in a special section ".rtemsstack.interrupt". Let BSPs define the optimal placement of this section in their linker command files (e.g. in a fast on-chip memory). This change makes makes the CPU_HAS_SOFTWARE_INTERRUPT_STACK and CPU_HAS_HARDWARE_INTERRUPT_STACK CPU port defines superfluous, since the low level initialization code has all information available via global symbols. This change makes the CPU_ALLOCATE_INTERRUPT_STACK CPU port define superfluous, since the interrupt stacks are allocated by confdefs.h for all architectures. There is no need for BSP-specific linker command file magic (except the section placement), see previous ARM linker command file as a bad example. Remove _CPU_Install_interrupt_stack(). Initialize the hardware interrupt stack in _CPU_Initialize() if necessary (e.g. m68k_install_interrupt_stack()). The optional _CPU_Interrupt_stack_setup() is still useful to customize the registration of the interrupt stack area in the per-CPU information. The initialization stack can reuse the interrupt stack, since * interrupts are disabled during the sequential system initialization, and * the boot_card() function does not return. This stack resuse saves memory. Changes per architecture: arm: * Mostly replace the linker symbol based configuration of stacks with the standard <rtems/confdefs.h> configuration via CONFIGURE_INTERRUPT_STACK_SIZE. The size of the FIQ, ABT and UND mode stack is still defined via linker symbols. These modes are rarely used in applications and the default values provided by the BSP should be sufficient in most cases. * Remove the bsp_processor_count linker symbol hack used for the SMP support. This is possible since the interrupt stack area is now allocated by the linker and not allocated from the heap. This makes some configure.ac stuff obsolete. Remove the now superfluous BSP variants altcycv_devkit_smp and realview_pbx_a9_qemu_smp. bfin: * Remove unused magic linker command file allocation of initialization stack. Maybe a previous linker command file copy and paste problem? In the start.S the initialization stack is set to a hard coded value. lm32, m32c, mips, nios2, riscv, sh, v850: * Remove magic linker command file allocation of initialization stack. Reuse interrupt stack for initialization stack. m68k: * Remove magic linker command file allocation of initialization stack. Reuse interrupt stack for initialization stack. powerpc: * Remove magic linker command file allocation of initialization stack. Reuse interrupt stack for initialization stack. * Used dedicated memory region (REGION_RTEMSSTACK) for the interrupt stack on BSPs using the shared linkcmds.base (replacement for REGION_RWEXTRA). sparc: * Remove the hard coded initialization stack. Use the interrupt stack for the initialization stack on the boot processor. This saves 16KiB of RAM. Update #3459.
2018-01-25Remove make preinstallChris Johns1-0/+0
A speciality of the RTEMS build system was the make preinstall step. It copied header files from arbitrary locations into the build tree. The header files were included via the -Bsome/build/tree/path GCC command line option. This has at least seven problems: * The make preinstall step itself needs time and disk space. * Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error. * There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult. * The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit. * An introduction of a new build system is difficult. * Include paths specified by the -B option are system headers. This may suppress warnings. * The parallel build had sporadic failures on some hosts. This patch removes the make preinstall step. All installed header files are moved to dedicated include directories in the source tree. Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc, etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g. erc32, imx, qoriq, etc. The new cpukit include directories are: * cpukit/include * cpukit/score/cpu/@RTEMS_CPU@/include * cpukit/libnetworking The new BSP include directories are: * bsps/include * bsps/@RTEMS_CPU@/include * bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include There are build tree include directories for generated files. The include directory order favours the most general header file, e.g. it is not possible to override general header files via the include path order. The "bootstrap -p" option was removed. The new "bootstrap -H" option should be used to regenerate the "headers.am" files. Update #3254.
2016-07-04bsps/arm: Support recent bootloaders starting kernel in HYP modePavel Pisa1-0/+4
When HYP mode is detected at startup then setup HYP mode vectors table (for future extensions) clean exceptions switching to HYP mode and switch CPU to ARM SVC mode. BSPs which want to use this support need to include next option in their configure.ac RTEMS_BSPOPTS_SET([BSP_START_IN_HYP_SUPPORT],[*],[1]) RTEMS_BSPOPTS_HELP([BSP_START_IN_HYP_SUPPORT], [Support start of BSP in ARM HYP mode]) AM_CONDITIONAL(BSP_START_IN_HYP_SUPPORT,test "$BSP_START_IN_HYP_SUPPORT" = "1") and need to include next lines in corresponding Makefile.am if BSP_START_IN_HYP_SUPPORT libbsp_a_SOURCES += ../shared/startup/bsp-start-in-hyp-support.S endif
2016-05-31bsps: Add defines for some linker subsectionsSebastian Huber1-1/+7
The GNU ld sort by name or alignment needs distinct input sections.
2015-10-28bsps: Generalize .nocacheheap to .nocachenoloadSebastian Huber1-0/+6
Add ability to place data in a non-loadable cache-inhibited area.
2015-10-08bsps: Add .nocacheheap sectionSebastian Huber1-5/+5
This avoids consumption of a loadable address space for the nocache heap.
2014-11-27bsps/arm: Add .nocache sectionSebastian Huber1-1/+13
This section can be use to provide a cache coherent memory area via rtems_cache_coherent_add_area().
2014-03-21Change all references of rtems.com to rtems.org.Chris Johns1-1/+1
2014-03-13bsp/arm: Add linker symbol bsp_processor_countRalf Kirchner1-0/+2
2014-01-13bsps/arm: Use ALIGN_WITH_INPUTSebastian Huber1-6/+0
The ALIGN_WITH_INPUT helps to make this linker script more reliable. See also: https://sourceware.org/ml/binutils/2013-06/msg00246.html https://sourceware.org/binutils/docs-2.24/ld/Forced-Output-Alignment.html#Forced-Output-Alignment This reverts commit 4a9e52eefc510d7022ddc61c4ecde8db6b9a0217. This reverts commit 1ab4f76900d012b5a9dbce2851add060f11ce13a.
2013-12-19Revert "bsps/arm: Use ALIGN_WITH_INPUT"Chris Johns1-0/+6
This reverts commit 287bbb65afd24ffc6254ae5f328733213f184205. Conflicts: c/src/lib/libbsp/arm/shared/startup/linkcmds.base
2013-12-16bsps/arm: Use ALIGN_WITH_INPUTSebastian Huber1-6/+0
This requires at least Binutils 2.24.
2013-12-10arm shared: Add bsp_translation_table_end the linker symbols.Chris Johns1-0/+1
2013-12-09doxygen: refactored doxygen in libbsp to illustrate new rule setDaniel Ramirez1-3/+3
2013-05-27bsps: Update due to linker changesSebastian Huber1-0/+6
In case the VMA and LMA regions differ, the LMA start address is now no longer aligned with the alignment of the input sections: http://sourceware.org/bugzilla/show_bug.cgi?id=15222
2013-05-03bsps/arm: Add and use bsp_translation_table_baseSebastian Huber1-6/+9
2011-11-082011-11-08 Sebastian Huber <sebastian.huber@embedded-brains.de>Sebastian Huber1-0/+4
* shared/startup/bsp-start-copy-sections.c, shared/startup/bsp-start-memcpy.S: New files. * shared/include/start.h: Declare bsp_start_copy_sections(). * shared/start/start.S, shared/include/linker-symbols.h: Moved content. Support for ARMv7-M.
2010-12-032010-12-03 Sebastian Huber <sebastian.huber@embedded-brains.de>Sebastian Huber1-4/+18
* preinstall.am, shared/lpc/include/lpc-i2s.h, shared/startup/linkcmds.armv4, shared/startup/linkcmds.armv7: New files. * Makefile.am: Added header and linker command files intended to be used by every ARM BSP. * shared/startup/linkcmds.base: Support for EABI and ARM ELF standard. * shared/include/linker-symbols.h: Update due to linker command file changes. * shared/start/start.S, shared/include/start.h: Renamed entry symbol from start to _start to avoid namespace conflicts. Update due to linker command file changes.
2010-06-212010-06-21 Sebastian Huber <sebastian.huber@embedded-brains.de>Sebastian Huber1-0/+4
* shared/start/start.S, shared/startup/linkcmds.base, shared/include/linker-symbols.h: Added and use bsp_vector_table_begin, bsp_vector_table_size and bsp_vector_table_end.
2010-01-12add support for lpc32xxThomas Doerfler1-3/+3
2009-12-15add support for LPC32xxThomas Doerfler1-0/+8
2009-09-18Removed symbols and renamed sections.Thomas Doerfler1-8/+14
Added bsp_start_memcpy(). Documentation. Changes for external ROM start.
2009-07-17ARM bsp maintenanceThomas Doerfler1-58/+75
2008-09-22*** empty log message ***Thomas Doerfler1-0/+80
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