u-boot.git/arch/arm/mach-apple, branch master

treewide: move bi_dram[] from bd to gd

2026-06-25T00:13:24Z

Currently, the bi_dram[] information is stored in the board info structure (bd). Because bd is only valid after reserve_board(), dram_init_banksize() must be called late in the initialization process. This limitation is problematic, as it forces us to rely on a variety of bespoke functions to determine board RAM, bank memory sizes, and other early setup requirements. By moving bi_dram[] into the global data (gd), we can run it earlier. This is particularly convenient since boards define their own dram_init_banksize() routines, which do not always rely on parsing Device Tree (DT) memory nodes. Additionally, U-Boot defaults to relocating to the top of the first memory bank. While boards currently use custom functions to override this behavior, having the DRAM bank information available earlier in gd makes relocating to a different bank trivial and standardizes the process. Reviewed-by: Anshul Dalal Tested-by: Michal Simek # Versal Gen 2 Vek385 Tested-by: Anshul Dalal Reviewed-by: Simon Glass Signed-off-by: Ilias Apalodimas Tested-by: Christophe Leroy (CS GROUP)

arm: apple: Add Apple M3 (t8122) support

2026-05-12T18:11:36Z

Apple's M3 SoC is similar to M1 and M2 but uses a different memory map. The main difference is that RAM starts at 0x100_0000_0000 like on t600x and t602x (M1 and M2 Pro/Max/Ultra). Otherwise IO blocks have been rearranged. U-boot's existing drivers are compatible with the hardware and M3 device trees will carry "apple,t8103-*" compatible strings. Only apple-atcphy-reset might need a new compatible due to USB4 / DisplayPort changes the Linux driver has to deal with. Signed-off-by: Janne Grunau Acked-by: Mark Kettenis

arm: apple: Switch to board based text env

2026-05-12T18:08:15Z

The main use case for u-boot on Apple silicon based devices is to provide an EFI based bootloader for operating systems. This uses a generic u-boot image with DTBs passed from an earlier boot loader (m1n1). Use the generic board name "mac" for this purpose. Signed-off-by: Janne Grunau

lmb: replace the lmb_alloc() and lmb_alloc_base() API's

2025-06-25T15:50:37Z

There currently are two API's for requesting memory from the LMB module, lmb_alloc() and lmb_alloc_base(). The function which does the actual allocation is the same. Use the earlier introduced API lmb_alloc_mem() for both types of allocation requests. Signed-off-by: Sughosh Ganu Acked-by: Ilias Apalodimas

Merge patch series "linux/bitfield.h: sync from Linux 6.15 + winbond"

2025-06-14T15:13:39Z

Christian Marangi says: This small series sync linux/bitfield.h from Linux 6.15 and fix all the compilation error due to a change in the header include. The sync is needed to make it easier to support the winbond changes. The changes are CI test with [1] [1] https://github.com/u-boot/u-boot/pull/777 Link: https://lore.kernel.org/r/20250607211133.2005-1-ansuelsmth@gmail.com

arm: apple: rtkit: add missing header linux/bug.h and linux/bitops.h

2025-06-14T15:11:10Z

The GENMASK/GENMASK_ULL macro requires inclusion of linux/bitops.h header. It does currently work as bitfield.h includes it indirectly but this will change when bitfield.h will be synced with new Linux version. Also raw printf require linux/bug.h header (also currently included indirectly by bitfield.h) Explicitly include the headers to fix future compilation error. Signed-off-by: Christian Marangi

global: Avoid indirect inclusion of from

2025-05-29T14:29:16Z

The include file does not need anything from . Furthermore, include/env.h itself includes other headers which can lead to longer indirect inclusion paths. To prepare to remove from fix all of the places which had relied on this indirect inclusion to instead include directly. Reviewed-by: Mattijs Korpershoek # android, bcb Reviewed-by: Jerome Forissier # spawn Signed-off-by: Tom Rini

arm: apple: rtkit: Support allocating OSLog out of SRAM in helper

2025-04-28T19:16:45Z

The new OSLog region in MTP (firmware 13.3+) persists on handoff to Linux. To avoid having to come up with some weird DART handoff or DAPF tricks, let's just steal some of the coprocessor's dedicated SRAM. This keeps it happy and Linux doesn't need any special handoff then. Signed-off-by: Hector Martin Signed-off-by: Mark Kettenis

arm: apple: rtkit: Add endpoint field to buffers

2025-04-28T19:16:45Z

To be used for special-case oslog support in rtkit-helper. Signed-off-by: Hector Martin Signed-off-by: Mark Kettenis

arm: apple: rtkit: Add OSLog buffer support

2025-04-28T19:16:45Z

This will work for u-boot itself, but needs a special workaround in the MTP driver for Linux handoff to work. Signed-off-by: Hector Martin Signed-off-by: Mark Kettenis