imx-atf.git - Reference implementation of ARM secure world software for i.MX

Age	Commit message (Collapse)	Author
2018-02-27	Add comments about mismatched TCR_ELx and xlat tables	Antonio Nino Diaz
	When the MMU is enabled and the translation tables are mapped, data read/writes to the translation tables are made using the attributes specified in the translation tables themselves. However, the MMU performs table walks with the attributes specified in TCR_ELx. They are completely independent, so special care has to be taken to make sure that they are the same. This has to be done manually because it is not practical to have a test in the code. Such a test would need to know the virtual memory region that contains the translation tables and check that for all of the tables the attributes match the ones in TCR_ELx. As the tables may not even be mapped at all, this isn't a test that can be made generic. The flags used by enable_mmu_xxx() have been moved to the same header where the functions are. Also, some comments in the linker scripts related to the translation tables have been fixed. Change-Id: I1754768bffdae75f53561b1c4a5baf043b45a304 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
2018-01-18	bl2-el3: Mark all the assembly functions in bl2 at el3	Roberto Vargas
	When BL2_AT_EL3 option is enabled some platforms are going to need a resident part in BL2 because the boot rom may jump to it after a reset. This patch introduces __TEXT_RESIDENT_START__ and __TEXT_RESIDENT_END__ linker symbols that mark the resident region. Change-Id: Ib20c1b8ee257831bcc0ca7d3df98d0cb617a04f8 Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
2018-01-18	bl2-el3: Add BL2_EL3 image	Roberto Vargas
	This patch enables BL2 to execute at the highest exception level without any dependancy on TF BL1. This enables platforms which already have a non-TF Boot ROM to directly load and execute BL2 and subsequent BL stages without need for BL1. This is not currently possible because BL2 executes at S-EL1 and cannot jump straight to EL3. Change-Id: Ief1efca4598560b1b8c8e61fbe26d1f44e929d69 Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>