acpi/acpigen: add acpigen_resource_mmio to generate MMIO resource
Add the acpigen_resource_mmio helper function to generate an MMIO range
resource.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I38d55dfcc2892bcb5d253a3aef6ed993cfdba0a5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75045
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index fb84cd1..7118d1c 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -2254,6 +2254,42 @@
io_limit - io_base + 1); /* length */
}
+static void acpigen_resource_mmio32(u32 mmio_base, u32 mmio_limit, u16 type_flags)
+{
+ acpigen_resource_dword(RSRC_TYPE_MEM, /* res_type */
+ ADDR_SPACE_GENERAL_FLAG_MAX_FIXED
+ | ADDR_SPACE_GENERAL_FLAG_MIN_FIXED
+ | ADDR_SPACE_GENERAL_FLAG_DEC_POS, /* gen_flags */
+ type_flags, /* type_flags */
+ 0, /* gran */
+ mmio_base, /* range_min */
+ mmio_limit, /* range_max */
+ 0x0, /* translation */
+ mmio_limit - mmio_base + 1); /* length */
+}
+
+static void acpigen_resource_mmio64(u64 mmio_base, u64 mmio_limit, u16 type_flags)
+{
+ acpigen_resource_qword(RSRC_TYPE_MEM, /* res_type */
+ ADDR_SPACE_GENERAL_FLAG_MAX_FIXED
+ | ADDR_SPACE_GENERAL_FLAG_MIN_FIXED
+ | ADDR_SPACE_GENERAL_FLAG_DEC_POS, /* gen_flags */
+ type_flags, /* type_flags */
+ 0, /* gran */
+ mmio_base, /* range_min */
+ mmio_limit, /* range_max */
+ 0x0, /* translation */
+ mmio_limit - mmio_base + 1); /* length */
+}
+
+void acpigen_resource_mmio(u64 mmio_base, u64 mmio_limit, u16 type_flags)
+{
+ if (mmio_base < 4ULL * GiB && mmio_limit < 4ULL * GiB)
+ acpigen_resource_mmio32(mmio_base, mmio_limit, type_flags);
+ else
+ acpigen_resource_mmio64(mmio_base, mmio_limit, type_flags);
+}
+
void acpigen_write_ADR(uint64_t adr)
{
acpigen_write_name_qword("_ADR", adr);
diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h
index 614cd6e..2147990 100644
--- a/src/include/acpi/acpigen.h
+++ b/src/include/acpi/acpigen.h
@@ -690,6 +690,7 @@
void acpigen_resource_bus_number(u16 bus_base, u16 bus_limit);
void acpigen_resource_io(u16 io_base, u16 io_limit);
+void acpigen_resource_mmio(u64 mmio_base, u64 mmio_limit, u16 type_flags);
/* Emits Notify(namestr, value) */
void acpigen_notify(const char *namestr, int value);