Hi, On 1/8/26 4:50 PM, Sascha Hauer wrote: > Add PBL-specific memory remapping function that always uses page-wise > mapping (ARCH_MAP_FLAG_PAGEWISE) for fine-grained permissions on > adjacent ELF segments with different protection requirements.
This commit message doesn't reflect reality any longer. > Wraps arch-specific __arch_remap_range() for ARMv7 (4KB pages) and > ARMv8 (page tables with BBM). Needed for ELF segment permission setup. I think it should be possible to drop this commit completely and use remap_range from <mmu.h> directly in PBL. Thanks, Ahmad > > Reviewed-by: Ahmad Fatoum <[email protected]> > Signed-off-by: Sascha Hauer <[email protected]> > --- > arch/arm/cpu/mmu_32.c | 6 ++++++ > arch/arm/cpu/mmu_64.c | 7 +++++++ > include/mmu.h | 3 +++ > 3 files changed, 16 insertions(+) > > diff --git a/arch/arm/cpu/mmu_32.c b/arch/arm/cpu/mmu_32.c > index > 71ead41c3d274548c9427c1ce9833de309114c4d..981202b789befbd04e212f48490aebb41dfb6b98 > 100644 > --- a/arch/arm/cpu/mmu_32.c > +++ b/arch/arm/cpu/mmu_32.c > @@ -435,6 +435,12 @@ static void early_remap_range(u32 addr, size_t size, > maptype_t map_type) > __arch_remap_range((void *)addr, addr, size, map_type); > } > > +void pbl_remap_range(void *virt_addr, phys_addr_t phys_addr, size_t size, > + maptype_t map_type) > +{ > + __arch_remap_range(virt_addr, phys_addr, size, map_type); > +} > + > static bool pte_is_cacheable(uint32_t pte, int level) > { > return (level == 2 && (pte & PTE_CACHEABLE)) || > diff --git a/arch/arm/cpu/mmu_64.c b/arch/arm/cpu/mmu_64.c > index > ddf1373ec0a801baad043146187d7f4c3eac6a2a..5ea0d39ad4c7fb219b38cf957335615d0d6e96c5 > 100644 > --- a/arch/arm/cpu/mmu_64.c > +++ b/arch/arm/cpu/mmu_64.c > @@ -282,6 +282,13 @@ static void early_remap_range(uint64_t addr, size_t > size, maptype_t map_type) > __arch_remap_range(addr, addr, size, map_type, false); > } > > +void pbl_remap_range(void *virt_addr, phys_addr_t phys_addr, size_t size, > + maptype_t map_type) > +{ > + __arch_remap_range((uint64_t)virt_addr, phys_addr, > + (uint64_t)size, map_type, true); > +} > + > int arch_remap_range(void *virt_addr, phys_addr_t phys_addr, size_t size, > maptype_t map_type) > { > map_type = arm_mmu_maybe_skip_permissions(map_type); > diff --git a/include/mmu.h b/include/mmu.h > index > 9f582f25e1de14d47cfe2eff64f9cce81c4e492d..32d9a7aca3b9a61d542bf3e21e27f1ac51f43ee2 > 100644 > --- a/include/mmu.h > +++ b/include/mmu.h > @@ -65,6 +65,9 @@ static inline bool arch_can_remap(void) > } > #endif > > +void pbl_remap_range(void *virt_addr, phys_addr_t phys_addr, size_t size, > + maptype_t map_type); > + > static inline int remap_range(void *start, size_t size, maptype_t map_type) > { > return arch_remap_range(start, virt_to_phys(start), size, map_type); > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
