This series replaces 7 patches that are in next to fix a barebox hang when used together with OP-TEE.
Root cause is that we need to consider both reserved memory entries and the text area at once, otherwise mapping non-reserved regions cached would map the text area eXecute never Changes in v4: - skip TLB invalidation if remapping zero bytes - share common memory bank remapping code - fix reserved memory at end of RAM mapping barebox text eXecute Never - add range helpers to make especially v4 code clearer - pass map type not pte flags to early_remap_range Changes in v3: - rework create_sections() for Ahmads comments - mention CR_S bit and DOMAIN_CLIENT in commit message - Link to v2: https://lore.barebox.org/20250617-mmu-xn-ro-v2-0-3c7aa9046...@pengutronix.de Changes in v2: - Tested and fixed for ARMv5 - merge create_pages() and create_sections() into one functions (ahmad) - introduce function to create mapping flags based on CONFIG_ARM_MMU_PERMISSIONS - Link to v1: https://lore.barebox.org/20250606-mmu-xn-ro-v1-0-7ee6ddd13...@pengutronix.de Ahmad Fatoum (8): mmu: explicitly map executable non-SDRAM regions with MAP_CODE ARM: mmu: skip TLB invalidation if remapping zero bytes ARM: mmu: provide setup_trap_pages for both 32- and 64-bit ARM: mmu: share common memory bank remapping code ARM: mmu: make mmu_remap_memory_banks clearer with helper partition: rename region_overlap_end to region_overlap_end_inclusive partition: define new region_overlap_end_exclusive helper ARM: mmu64: map text segment ro and data segments execute never Sascha Hauer (5): ARM: pass barebox base to mmu_early_enable() ARM: mmu: move ARCH_MAP_WRITECOMBINE to header ARM: mmu: map memory for barebox proper pagewise ARM: mmu: map text segment ro and data segments execute never ARM: mmu64: map memory for barebox proper pagewise arch/arm/Kconfig | 12 ++++ arch/arm/cpu/lowlevel_32.S | 1 + arch/arm/cpu/mmu-common.c | 69 +++++++++++++++++++++ arch/arm/cpu/mmu-common.h | 21 +++++++ arch/arm/cpu/mmu_32.c | 101 ++++++++++++++++++------------- arch/arm/cpu/mmu_64.c | 88 ++++++++++++++++----------- arch/arm/cpu/uncompress.c | 9 ++- arch/arm/include/asm/mmu.h | 2 +- arch/arm/include/asm/pgtable64.h | 1 + arch/arm/lib32/barebox.lds.S | 3 +- arch/arm/lib64/barebox.lds.S | 5 +- arch/arm/mach-imx/romapi.c | 3 +- commands/iomemport.c | 2 +- common/memory.c | 7 ++- common/partitions.c | 6 +- drivers/firmware/socfpga.c | 4 ++ drivers/hab/habv4.c | 2 +- include/mmu.h | 1 + include/range.h | 30 +++++++-- 19 files changed, 268 insertions(+), 99 deletions(-) -- 2.39.5
