acpi: Add support for writing ACPI _PLD structures
This commit adds support for writing ACPI _PLD structures that
describe the physical location of a device to the OS.
This can be used by any device with a physical connector, but is
required when defining USB ports for the OS.
A simple function is provided that generates a generic _PLD
structure for USB ports based on the USB port type.
Change-Id: Ic9cf1fd158eca80ead21b4725b37ab3c36b000f3
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/26171
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 867c809..6243d26 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -1236,6 +1236,17 @@
acpigen_pop_len();
}
+void acpigen_write_pld(const struct acpi_pld *pld)
+{
+ uint8_t buf[20];
+
+ if (acpi_pld_to_buffer(pld, buf, ARRAY_SIZE(buf)) < 0)
+ return;
+
+ acpigen_write_name("_PLD");
+ acpigen_write_byte_buffer(buf, ARRAY_SIZE(buf));
+}
+
void acpigen_write_dsm(const char *uuid, void (**callbacks)(void *),
size_t count, void *arg)
{