acpi: add more AML generation functions

Add the following functions to acpi AML generation code:

acpigen_write_to_integer_from_namestring()
acpigen_write_create_byte_field()
acpigen_write_create_word_field()
acpigen_write_create_dword_field()
acpigen_write_create_qword_field()

BUG=b:163583825

Change-Id: Ida151aff68f90012b16df2383fb96ddb87c3fb9c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44641
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 40 insertions, 0 deletions

diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c
index f2187062a7..a82a66ef6e 100644
--- a/src/acpi/acpigen.c
+++ b/src/acpi/acpigen.c
@@ -1353,6 +1353,13 @@ void acpigen_write_to_integer(uint8_t src, uint8_t dst)
 	acpigen_emit_byte(dst);
 }
 
+void acpigen_write_to_integer_from_namestring(const char *source, uint8_t dst_op)
+{
+	acpigen_emit_byte(TO_INTEGER_OP);
+	acpigen_emit_namestring(source);
+	acpigen_emit_byte(dst_op);
+}
+
 void acpigen_write_byte_buffer(uint8_t *arr, size_t size)
 {
 	size_t i;
@@ -1971,3 +1978,31 @@ void acpigen_notify(const char *namestr, int value)
 	acpigen_emit_namestring(namestr);
 	acpigen_write_integer(value);
 }
+
+static void _create_field(uint8_t aml_op, uint8_t srcop, size_t byte_offset, const char *name)
+{
+	acpigen_emit_byte(aml_op);
+	acpigen_emit_byte(srcop);
+	acpigen_write_integer(byte_offset);
+	acpigen_emit_namestring(name);
+}
+
+void acpigen_write_create_byte_field(uint8_t op, size_t byte_offset, const char *name)
+{
+	_create_field(CREATE_BYTE_OP, op, byte_offset, name);
+}
+
+void acpigen_write_create_word_field(uint8_t op, size_t byte_offset, const char *name)
+{
+	_create_field(CREATE_WORD_OP, op, byte_offset, name);
+}
+
+void acpigen_write_create_dword_field(uint8_t op, size_t byte_offset, const char *name)
+{
+	_create_field(CREATE_DWORD_OP, op, byte_offset, name);
+}
+
+void acpigen_write_create_qword_field(uint8_t op, size_t byte_offset, const char *name)
+{
+	_create_field(CREATE_QWORD_OP, op, byte_offset, name);
+}
diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h
index 4525b6b922..e44926f576 100644
--- a/src/include/acpi/acpigen.h
+++ b/src/include/acpi/acpigen.h
@@ -368,6 +368,7 @@ void acpigen_write_if_lequal_namestr_int(const char *namestr, uint64_t val);
 void acpigen_write_else(void);
 void acpigen_write_to_buffer(uint8_t src, uint8_t dst);
 void acpigen_write_to_integer(uint8_t src, uint8_t dst);
+void acpigen_write_to_integer_from_namestring(const char *source, uint8_t dst_op);
 void acpigen_write_byte_buffer(uint8_t *arr, size_t size);
 void acpigen_write_return_byte_buffer(uint8_t *arr, size_t size);
 void acpigen_write_return_singleton_buffer(uint8_t arg);
@@ -380,6 +381,10 @@ void acpigen_write_ADR_pci_devfn(pci_devfn_t devfn);
 void acpigen_write_ADR_pci_device(const struct device *dev);
 struct soundwire_address;
 void acpigen_write_ADR_soundwire_device(const struct soundwire_address *address);
+void acpigen_write_create_byte_field(uint8_t op, size_t byte_offset, const char *name);
+void acpigen_write_create_word_field(uint8_t op, size_t byte_offset, const char *name);
+void acpigen_write_create_dword_field(uint8_t op, size_t byte_offset, const char *name);
+void acpigen_write_create_qword_field(uint8_t op, size_t byte_offset, const char *name);
 /*
  * Generate ACPI AML code for _DSM method.
  * This function takes as input uuid for the device, set of callbacks and