tree d79c42c15a56da36e3b29a4367ca6dea12027e15
parent d5b0aeab2e7320d79f2f1aad24868a844c257413
author Felix Held <felix-coreboot@felixheld.de> 1700609497 +0100
committer Felix Held <felix-coreboot@felixheld.de> 1701539462 +0000

acpi/acpi: update ACPI_DBG2_PORT_SERIAL_16550 subtype

The Microsoft Debug Port Table 2 (DBG2) specification says that the
serial port subtype 0x00 should only be used for I/O-mapped 16550
compatible UARTs. The subtype 0x12 is a superset of that, and supports
specifying MMIO vs IO and the register access size via the generic
address structure. Rename the subtype 0x00 definition to
ACPI_DBG2_PORT_SERIAL_16550_IO_ONLY and add the subtype 0x12 definition
as new ACPI_DBG2_PORT_SERIAL_16550, so that the acpi_write_dbg2_uart
function will write the correct subtype for the generic 16550 UART.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I816bb22e6f76e661c8b8e39a2a4cb83b0085acb5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79219
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>