u-boot.git/include/fdtdec.h, branch master

fdtdec: Add declaration for get_next_memory_node() helper

2026-02-13T07:16:24+00:00

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"

2024-12-31T16:57:54+00:00

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

2024-12-31T16:57:50+00:00

  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()

2024-12-18T21:18:59+00:00

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

2024-10-11T17:44:48+00:00

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

2024-01-07T20:45:07+00:00

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

2023-05-06T09:28:18+00:00

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

2023-04-28T00:06:57+00:00

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

fdt: Avoid exporting fdtdec_prepare_fdt()

2023-01-18T18:49:13+00:00

This function is not used outside this file. Make it static.

Signed-off-by: Simon Glass

fdtdec.h: Remove gurads around fdtdec_resetup function

2022-02-16T19:19:29+00:00

This function has not been conditionally compiled for some time, so
remove the incorrect guards around the declaration.

Signed-off-by: Tom Rini