u-boot.git/include/acpi, branch next

serial: coreboot: Accept DBG2 subtype 0x12

2026-08-10T20:22:09Z

U-Boot running as a coreboot payload obtains serial console information either from the coreboot table or from the ACPI DBG2 table. When serial console support is disabled in coreboot, the coreboot table does not contain serial information. In this case U-Boot falls back to parsing the DBG2 table. Some AMD platforms or any other platforms that uses memory-mapped I/O advertise the debug UART using DBG2 subtype 0x0012 ("16550-compatible with parameters defined in Generic Address Structure"). U-Boot currently accepts only subtype 0x0000, causing DBG2 UART detection to fail and leaving no console output. Accept subtype 0x0012 as well and keep the existing handling logic. Signed-off-by: Desapogu Jayaramudu Reviewed-by: Simon Glass

acpi: use U-Boot ACPI vendor ID

2025-11-06T14:30:33Z

The U-Boot project has been assigned the vendor ID 'UBOO' [1]. Use this vendor ID and our release version in the ACPI table headers. [1] ACPI ID Registry https://uefi.org/ACPI_ID_List Signed-off-by: Heinrich Schuchardt Reviewed-by: Bin Meng

Merge patch series "acpi: simplify updating ACPI table header checksum"

2025-04-08T22:23:27Z

Heinrich Schuchardt says: Introduce a new function to update ACPI table headers. This allows to simplify the existing code. Link: https://lore.kernel.org/r/20250321232121.251800-1-heinrich.schuchardt@canonical.com

acpi: new function acpi_update_checksum()

2025-04-08T21:22:56Z

Introduce a new function to update ACPI table headers. This allows to simplify the existing code. Signed-off-by: Heinrich Schuchardt Reviewed-by: Matthias Brugger Reviewed-by: Ilias Apalodimas

acpi: Mark struct acpi_rsdp as packed

2025-04-03T17:41:55Z

At present the size of this struct is too large on 64-bit machines. Annotate it with __packed to fix this. Signed-off-by: Simon Glass

arm: cpu: Add ACPI parking protocol support

2024-10-27T23:24:13Z

On Arm platforms that use ACPI they cannot rely on the "spin-table" CPU bringup usually defined in the FDT. Thus implement the 'ACPI Multi-processor Startup for ARM Platforms', also referred to as 'ACPI parking protocol'. The ACPI parking protocol works similar to the spin-table mechanism, but the specification also covers lots of shortcomings of the spin-table implementations. Every CPU defined in the ACPI MADT table has it's own 4K page where the spinloop code and the OS mailbox resides. When selected the U-Boot board code must make sure that the secondary CPUs enter u-boot after relocation as well, so that they can enter the spinloop code residing in the ACPI parking protocol pages. The OS will then write to the mailbox and generate an IPI to release the CPUs from the spinloop code. For now it's only implemented on ARMv8, but can easily be extended to other platforms, like ARMv7. TEST: Boots all CPUs on qemu-system-aarch64 -machine raspi4b Signed-off-by: Patrick Rudolph Reviewed-by: Simon Glass Cc: Simon Glass Cc: Tom Rini

acpi: Add processor device

2024-10-27T23:24:13Z

Add a new method to write the processor device identified by _HID ACPI0007, that is preferred over the Processor OpCode since ACPI 6.0. Fixes booting arm using ACPI only since the Processor OpCode isn't found valid by the Linux kernel. Signed-off-by: Patrick Rudolph Reviewed-by: Simon Glass Cc: Simon Glass

acpi: Move function prototype

2024-10-27T23:24:13Z

Allow other architectures to use acpi_create_mcfg_mmconfig as well by moving the function prototype to common code. Signed-off-by: Patrick Rudolph Reviewed-by: Simon Glass Cc: Simon Glass

acpi: acpi_table: Add IORT support

2024-10-27T23:24:13Z

The SoC can implement acpi_fill_iort to update the IORT table. Add a helper function to fill out the NAMED_COMPONENT node. TEST=Run FWTS V24.03.00 on RPi4 and round no problems. Signed-off-by: Patrick Rudolph Reviewed-by: Simon Glass Cc: Simon Glass

acpi: Add ACPITAB for PPTT and GTDT

2024-10-27T23:24:13Z

Return the ACPI table revision in acpi_get_table_revision() for PPTT and GTDT. Match both to ACPI 6.2. Signed-off-by: Patrick Rudolph Reviewed-by: Simon Glass Cc: Simon Glass