u-boot.git/include/fdtdec.h, branch v2026.07

Merge patch series "Linux compat improvements and CCF prep"

2026-04-21T17:21:59Z

Casey Connolly says: This series implements various improvements to Linux header compatibility, largely in preparation for a full port of Linux CCF but many of these changes would also be helpful when porting other drivers. Beside the basic header/compat stuff there are a few larger patches: Patch 1 adds the "%pOF" format specifier to vsprintf, this behaves the same as it does in Linux printing the name of the ofnode, but notably it expects an ofnode pointer rather than a device_node. Patch 2 adds an option to skip doing a full DM scan pre-relocation. Some platforms like Qualcomm don't actually need devices to be probed prior to relocation, it is also quite slow to scan the entire FDT before caches are up. This option gets us to main loop 30-50% faster. Unfortunately it isn't possible to totally skip DM since U-Boot will panic if it can't find a serial port, but the serial uclass code will bind the serial port itself by reading /chosen/stdout-path, however any dependencies like clocks won't be found so this should only be enabled if the serial driver gracefully handles missing clocks. Patch 3 adds [k]strdup_const(), this works the same as the Linux version saving a small amount of memory by avoiding duplicating strings stored in .rodata, this is particularly useful for CCF. Patch 4 adds 64-bit versions of some 32-bit ofnode utilities functions, making it possible to parse 64-bit arrays. Patch 6 provides a simple implementation of kref, this will be used by CCF. Patch 9 adds devm_krealloc() support to devres, it relies on storing allocation sizes in the devres struct which will add a small overhead. Link: https://lore.kernel.org/r/20260401-casey-ccf-compat-v2-0-414d5b7f040b@linaro.org

ofnode: add read_u64_array and count_elems_of_size

2026-04-21T17:19:49Z

These are similar to their Linux counterparts, adding helpers for reading arrays of 64-bit values with of_access and fdtdec implementations. Signed-off-by: Casey Connolly

fdtdec: Add declaration for get_next_memory_node() helper

2026-02-13T07:16:24Z

Add get_next_memory_node() function declaration to fdtdec.h to support iterating through multiple memory nodes in device tree. This function is used to enumerate memory banks when the system has non-contiguous or multiple memory regions defined with device_type = "memory". The function implementation already exists in lib/fdtdec.c (lines 1298-1305) but was missing the public declaration in the header file. This patch adds the declaration and includes dm/ofnode_decl.h for the ofnode type definition. This is needed for platforms that require early memory enumeration before standard fdtdec_setup_memory_banksize() is called, particularly for dynamic MMU page table size calculation based on actual DRAM configuration. Signed-off-by: Pranav Sanwal Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/20260129120021.1328653-2-pranav.sanwal@amd.com

Merge patch series "Keep the access to dtb_dt_embedded() within fdtdec"

2024-12-31T16:57:54Z

Evgeny Bachinin says: The 1st patch addresses comments from the post-review, available by link [1]. The 2nd patch fixes problems of dtb_dt_embedded() with checkpatch. Links: [1] https://lore.kernel.org/u-boot/CAFLszTgEKamsa6FTnjzrEWQBLkqAR7EBbZqffx09AKgQ7ppuVA@mail.gmail.com/#t Link: https://lore.kernel.org/r/20241211-dtb_dt_embedded_within_fdtdec-v1-0-7840469f0084@salutedevices.com

fdtdec: encapsulate dtb_dt_embedded() within

2024-12-31T16:57:50Z

Patch keeps the access to dtb_dt_embedded() within fdtdec API, by means of new API function introduction. This new function is a common place for updating appropriate global_data fields for OF_EMBED case. Also, the consequence of the patch is movement of '___dtb_dt_*begin' symbols' declaration from header file, because nobody used symbols outside the lib/fdtdec.c. Signed-off-by: Evgeny Bachinin Suggested-by: Simon Glass Reviewed-by: Simon Glass

fdt: Swap the signature for board_fdt_blob_setup()

2024-12-18T21:18:59Z

This returns a devicetree and updates a parameter with an error code. Swap it, since this fits better with the way U-Boot normally works. It also (more easily) allows leaving the existing pointer unchanged. No yaks were harmed in this change, but there is a very small code-size reduction. For sifive, the OF_BOARD option must be set for the function to be called, so there is no point in checking it again. Also OF_SEPARATE is defined always. Signed-off-by: Simon Glass Reviewed-by: Matthias Brugger Reviewed-by: Patrice Chotard [trini: Update total_compute] Signed-off-by: Tom Rini

include: Use CONFIG_XPL_BUILD instead of CONFIG_SPL_BUILD

2024-10-11T17:44:48Z

Use the new symbol to refer to any 'SPL' build, including TPL and VPL Signed-off-by: Simon Glass

fdt: Allow the devicetree to come from a bloblist

2024-01-07T20:45:07Z

Standard passage provides for a bloblist to be passed from one firmware phase to the next. That can be used to pass the devicetree along as well. Add an option to support this. Tests for this will be added as part of the Universal Payload work. Signed-off-by: Simon Glass Reviewed-by: Tom Rini Reviewed-by: Ilias Apalodimas

include: fdtdec: decouple fdt_addr_t and phys_addr_t size

2023-05-06T09:28:18Z

The DT specification supports CPUs with both 32-bit and 64-bit addressing capabilities. In U-boot the fdt_addr_t and phys_addr_t size are coupled by a typedef. The MTD NAND drivers for 32-bit CPU's can describe partitions with a 64-bit reg property. These partitions synced from Linux end up with the wrong offset and sizes when only the lower 32-bit is passed. Decouple the fdt_addr_t and phys_addr_t size as they don't necessary match. Signed-off-by: Johan Jonker Reviewed-by: Simon Glass Reviewed-by: Kever Yang

mtd: nand: sunxi: Convert from fdtdec to ofnode

2023-04-28T00:06:57Z

As a first step toward converting this driver to the driver model, use the ofnode abstraction to replace direct references to the FDT blob. Using ofnode_read_u32_index removes an extra pair of loops and makes the allwinner,rb property optional, matching the devicetree binding. Signed-off-by: Samuel Holland Acked-by: Andre Przywara Signed-off-by: Andre Przywara