rtems - RTEMS Kernel, file-systems, drivers, BSPs, samples, and testsuite.

	Commit message (Collapse)	Author	Age	Files	Lines
*	bsps/aarch64: Add MMU driver to relax alignment	Kinsey Moore	2021-05-27	1	-2/+6
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	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.
*	bsps/aarch64: Resolve usage of SUBALIGN()	Kinsey Moore	2021-03-05	1	-1/+0
\| \| \| \| \| \| \| \|	Remove usage of SUBALIGN() in aarch64 linkcmds which works around a difference in behavior on AArch64 platforms. This is no longer necessary since alignment is now enforced explicitly. Closes #4178.
*	Add AArch64 ZynpMP BSP	Kinsey Moore	2020-12-04	1	-0/+72
	This adds a BSP family that runs on the Xilinx Ultrascale+ MPSOC (ZynqMP) family of chips. It is configured to be usable on the Qemu ZCU102 machine definition and should be almost trivially portable to ZynqMP development boards and custom hardware. It is also configured to be usable with libbsd.