u-boot.git/arch/arm/cpu, branch v2026.01

ARM: Fix HAS_ARMV7_SECURE_BASE help text

2025-11-11T17:54:56Z

Drop the 'a' from 'ahardware', no functional change. Signed-off-by: Marek Vasut

armv8: implement workaround for broken CNTFRQ_EL0 value

2025-11-06T14:19:19Z

In devices where the U-Boot is used as a secondary bootloader, we rely on the device's primary bootloader to implement CNTFRQ_EL0. However, this reliance may lead to a non-functional timer in broken firmware. For instance, some versions of Samsung's S-Boot don't implement it. It's also not possible to set it in the U-Boot, because it's booted in a lower exception level. CNTFRQ_EL0 is reported to be 0. Use gd->arch.timer_rate_hz to override the queried value if set. This setting needs to be done in the board file, preferrably in timer_init(). This feature is present only when the CONFIG_ARMV8_CNTFRQ_BROKEN is enabled. Signed-off-by: Kaustabh Chakraborty

arm: armv8: mmu: fix mem_map_from_dram_banks

2025-11-04T16:39:06Z

mem_map_from_dram_banks calls fdtdec_setup_memory_banksize to setup the dram banks though that is expected to be done by dram_init_banksize as part of board_r sequence. This has the side effect of modifying gd->bd->bi_dram as well, therefore this patch removes the call and updates spl_enable_cache for K3 to call dram_init_banksize. Signed-off-by: Anshul Dalal Reported-by: Francesco Dolcini Closes: https://lore.kernel.org/u-boot/20251027165225.GA71553@francesco-nb/ Fixes: fe2647f2a0d4 ("arm: armv8: mmu: add mem_map_from_dram_banks") Tested-by: Emanuele Ghidoli

arm: armv8: Make save_boot_params simpler

2025-10-24T19:47:50Z

The idiom used in save_boot_params is common for armv7. In armv8 is much easier to do the same thing with adr/adrp. So let's simplify the code a bit. Signed-off-by: Ilias Apalodimas

spl: split spl_board_fixups to arch/board specific

2025-10-22T18:05:52Z

The current spl_board_fixups API allows for modification of spl_image before the SPL jumps to it. This can be used to modify the DT for the next boot stage, however the current API only allows either the machine arch or the board to use it. This limits the utility of the API as there might be certain fixups that should be applied to all boards sharing the same machine architecture with others being board specific. For TI's K3 specifically, this prevents us from performing architecture level fixups since a lot of TI boards are already making use of the spl_board_fixups API. Therefore this patch splits the API into two to allow both board and the architecture specific fixups. The order is kept as arch then board to give board specific fixups the precedence. Reviewed-by: Dhruva Gole Signed-off-by: Anshul Dalal Tested-by: Wadim Egorov

arm: armv8: mmu: add mmu_unmap_reserved_mem

2025-10-22T18:05:52Z

For armv8, U-Boot uses a static map defined as 'mem_map' for configuring the MMU's page tables, done by mmu_setup. Though this works well for simpler platforms, it makes creating runtime carveouts by modifying the static array at runtime exceedingly complex like in mach-snapdragon/board.c. Creation of such carveouts are much better handled by APIs such as mmu_change_region_attr once the page tables are configured. Usually such carveouts are configured via the device-tree's reserved-memory node which provides the address and size for the carveout. Therefore this patch adds mmu_unmap_reserved_mem which acts as a wrapper over mmu_change_region_attr, helping unmap a reserved-memory region. Reviewed-by: Ilias Apalodimas Signed-off-by: Anshul Dalal Tested-by: Wadim Egorov

arm: armv8: mmu: add mem_map_from_dram_banks

2025-10-22T18:05:52Z

For armv8, U-Boot uses a static map defined as 'mem_map' for configuring the MMU as part of mmu_setup. But since the exact configuration of memory banks might not be known at build time, many platforms such as imx9, versal2 etc. utilize gd->bd->bi_dram to configure the static map at runtime. Therefore this patch adds a new API mem_map_from_dram_banks that modifies the static map in a similar way. Allowing the caller to map all dram banks by just passing the index to last entry in their mem_map and it's length. Reviewed-by: Dhruva Gole Signed-off-by: Anshul Dalal Tested-by: Wadim Egorov

arm: armv8: invalidate dcache entries on dcache_enable

2025-10-22T18:05:52Z

In dcache_enable, currently the dcache entries are only invalidated when the MMU is not enabled. This causes issues when dcache_enable is called with the MMU already configured, in such cases the existing dcache entries are not flushed which might result in un-expected behavior. This patch invalidates the cache entries on every call of dcache_enable before enabling dcache (by setting CR_C). This makes dcache_enable behave similar to icache_enable as well. Reviewed-by: Dhruva Gole Reviewed-by: Ilias Apalodimas Signed-off-by: Anshul Dalal Tested-by: Wadim Egorov

arm: armv8: remove redundant definition of mmu_status

2025-10-03T21:13:58Z

mmu_status is used in io memcpy functions to prevent accesses to non 8-byte aligned addresses when the mmu is disabled. Though there is a redundant definition enabled when icaches is turned off by setting SYS_ICACHE_OFF. This patch removes the redundant definition, allowing mmu_status to properly report the status regardless of config settings. This shouldn't be a problem since access to non 8-byte aligned data can be done irrespective of icache state. Fixes: 268f6ac1f95c ("arm64: Update memcpy_{from, to}io() helpers") Signed-off-by: Anshul Dalal Reviewed-by: Patrice Chotard Reviewed-by: Dhruva Gole Acked-by: Ilias Apalodimas

Merge tag 'v2025.10-rc5' into next

2025-09-23T14:24:59Z

Prepare v2025.10-rc5