This is v2 of a series to properly handle reserved memory areas with the no-map property. This allows us to early load OP-TEE, while also prohibiting the CPU from speculating into the OP-TEE area by mapping the OP-TEE area as uncached and eXecute Never. We also parse the device tree reserved memory areas from the DT passed into barebox proper, to also remove no-map entries from the MMU there. Rouven Czerwinski (8): of: reserve: add xn flag mem entries of: add of_get_reserve_map stub for !CONFIG_OFTREE ARM: mmu: use reserve mem entries to modify maps of: add flag to not create resmem DT entries of: add reserved_mem_read initcall pbl: fdt: add support to parse reserved mem ARM: mmu-early: map no-map entries XN & uncached PBL: enable LIBFDT for OP-TEE early loading arch/arm/cpu/mmu-early.c | 13 +++++ arch/arm/cpu/mmu.c | 34 ++++++++++- arch/arm/cpu/sm.c | 2 +- arch/arm/cpu/start.c | 2 +- arch/arm/mach-layerscape/ppa.c | 2 +- common/Kconfig | 1 + common/bootm.c | 3 +- drivers/of/Makefile | 1 + drivers/of/fdt.c | 16 +++-- drivers/of/reserved-mem.c | 43 ++++++++++++++ drivers/video/fb.c | 3 +- drivers/video/simplefb-fixup.c | 2 +- fs/pstore/ram.c | 3 +- include/of.h | 14 ++++- include/pbl.h | 25 ++++++++ pbl/fdt.c | 103 ++++++++++++++++++++++++++++----- 16 files changed, 237 insertions(+), 30 deletions(-) create mode 100644 drivers/of/reserved-mem.c -- 2.32.0 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
