arch/x86: add acpigen resource support
Add Word/DWord/QWord Address Space Descriptor helper functions.
Signed-off-by: Jonathan Zhang <jonzhang@fb.com>
Signed-off-by: Reddy Chagam <anjaneya.chagam@intel.com>
Change-Id: I707f8a443090b6f30e2940b721f9555ccdf49d32
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38594
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 2e60783..72605bb 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -1758,3 +1758,78 @@
else
return acpigen_soc_clear_tx_gpio(gpio->pins[0]);
}
+
+/* refer to ACPI 6.4.3.5.3 Word Address Space Descriptor section for details */
+void acpigen_resource_word(u16 res_type, u16 gen_flags, u16 type_flags, u16 gran,
+ u16 range_min, u16 range_max, u16 translation, u16 length)
+{
+ acpigen_emit_byte(0x88);
+ /* Byte 1+2: length (0x000d) */
+ acpigen_emit_byte(0x0d);
+ acpigen_emit_byte(0x00);
+ /* resource type */
+ acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus
+ /* general flags */
+ acpigen_emit_byte(gen_flags);
+ /* type flags */
+ // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details
+ acpigen_emit_byte(type_flags);
+ /* granularity, min, max, translation, length */
+ acpigen_emit_word(gran);
+ acpigen_emit_word(range_min);
+ acpigen_emit_word(range_max);
+ acpigen_emit_word(translation);
+ acpigen_emit_word(length);
+}
+
+/* refer to ACPI 6.4.3.5.2 DWord Address Space Descriptor section for details */
+void acpigen_resource_dword(u16 res_type, u16 gen_flags, u16 type_flags,
+ u32 gran, u32 range_min, u32 range_max, u32 translation, u32 length)
+{
+ acpigen_emit_byte(0x87);
+ /* Byte 1+2: length (0023) */
+ acpigen_emit_byte(23);
+ acpigen_emit_byte(0x00);
+ /* resource type */
+ acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus
+ /* general flags */
+ acpigen_emit_byte(gen_flags);
+ /* type flags */
+ // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details
+ acpigen_emit_byte(type_flags);
+ /* granularity, min, max, translation, length */
+ acpigen_emit_dword(gran);
+ acpigen_emit_dword(range_min);
+ acpigen_emit_dword(range_max);
+ acpigen_emit_dword(translation);
+ acpigen_emit_dword(length);
+}
+
+static void acpigen_emit_qword(u64 data)
+{
+ acpigen_emit_dword(data & 0xffffffff);
+ acpigen_emit_dword((data >> 32) & 0xffffffff);
+}
+
+/* refer to ACPI 6.4.3.5.1 QWord Address Space Descriptor section for details */
+void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags,
+ u64 gran, u64 range_min, u64 range_max, u64 translation, u64 length)
+{
+ acpigen_emit_byte(0x8a);
+ /* Byte 1+2: length (0x002b) */
+ acpigen_emit_byte(0x2b);
+ acpigen_emit_byte(0x00);
+ /* resource type */
+ acpigen_emit_byte(res_type); // 0 - mem, 1 - io, 2 - bus
+ /* general flags */
+ acpigen_emit_byte(gen_flags);
+ /* type flags */
+ // refer to ACPI Table 6-234 (Memory), 6-235 (IO), 6-236 (Bus) for details
+ acpigen_emit_byte(type_flags);
+ /* granularity, min, max, translation, length */
+ acpigen_emit_qword(gran);
+ acpigen_emit_qword(range_min);
+ acpigen_emit_qword(range_max);
+ acpigen_emit_qword(translation);
+ acpigen_emit_qword(length);
+}