arch/x86/acpigen: Add more functions to ACPIGEN library

1. If (LEqual (Op1, Op2))
2. ToBuffer (src, dst)
3. ToInteger (src, dst)
4. Buffer (n) { op1, op2 .... }
5. Return ( )

BUG=chrome-os-partner:57846

Change-Id: I24fe647c690b2dd4849f0c53b2672ac7a2caa2de
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17088
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

2 files changed, 63 insertions, 0 deletions

diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 0a572630a1..35735b5cc9 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -987,12 +987,65 @@ void acpigen_write_if_and(uint8_t arg1, uint8_t arg2)
 	acpigen_emit_byte(arg2);
 }
 
+void acpigen_write_if_lequal(uint8_t arg1, uint8_t arg2)
+{
+	acpigen_write_if();
+	acpigen_emit_byte(LEQUAL_OP);
+	acpigen_emit_byte(arg1);
+	acpigen_emit_byte(arg2);
+}
+
 void acpigen_write_else(void)
 {
 	acpigen_emit_byte(ELSE_OP);
 	acpigen_write_len_f();
 }
 
+void acpigen_write_to_buffer(uint8_t src, uint8_t dst)
+{
+	acpigen_emit_byte(TO_BUFFER_OP);
+	acpigen_emit_byte(src);
+	acpigen_emit_byte(dst);
+}
+
+void acpigen_write_to_integer(uint8_t src, uint8_t dst)
+{
+	acpigen_emit_byte(TO_INTEGER_OP);
+	acpigen_emit_byte(src);
+	acpigen_emit_byte(dst);
+}
+
+void acpigen_write_byte_buffer(uint8_t *arr, uint8_t size)
+{
+	uint8_t i;
+
+	acpigen_emit_byte(BUFFER_OP);
+	acpigen_write_len_f();
+	acpigen_emit_byte(size);
+
+	for (i = 0; i < size; i++)
+		acpigen_emit_byte(arr[i]);
+
+	acpigen_pop_len();
+}
+
+void acpigen_write_return_byte_buffer(uint8_t *arr, uint8_t size)
+{
+	acpigen_emit_byte(RETURN_OP);
+	acpigen_write_byte_buffer(arr, size);
+}
+
+void acpigen_write_return_singleton_buffer(uint8_t arg)
+{
+	acpigen_write_return_byte_buffer(&arg, 1);
+}
+
+void acpigen_write_return_byte(uint8_t arg)
+{
+	acpigen_emit_byte(RETURN_OP);
+	acpigen_write_byte(arg);
+}
+
 /* Soc-implemented functions -- weak definitions. */
 int __attribute__((weak)) acpigen_soc_read_rx_gpio(unsigned int gpio_num)
 {
diff --git a/src/arch/x86/include/arch/acpigen.h b/src/arch/x86/include/arch/acpigen.h
index 0c515da242..dd83db85a1 100644
--- a/src/arch/x86/include/arch/acpigen.h
+++ b/src/arch/x86/include/arch/acpigen.h
@@ -75,6 +75,9 @@ enum {
 	AND_OP			= 0x7B,
 	OR_OP			= 0x7D,
 	NOT_OP			= 0x80,
+	LEQUAL_OP		= 0x93,
+	TO_BUFFER_OP		= 0x96,
+	TO_INTEGER_OP		= 0x99,
 	IF_OP			= 0xA0,
 	ELSE_OP		= 0xA1,
 	RETURN_OP		= 0xA4,
@@ -156,7 +159,14 @@ void acpigen_write_debug_integer(uint64_t val);
 void acpigen_write_debug_op(uint8_t op);
 void acpigen_write_if(void);
 void acpigen_write_if_and(uint8_t arg1, uint8_t arg2);
+void acpigen_write_if_lequal(uint8_t arg1, uint8_t arg2);
 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_byte_buffer(uint8_t *arr, uint8_t size);
+void acpigen_write_return_byte_buffer(uint8_t *arr, uint8_t size);
+void acpigen_write_return_singleton_buffer(uint8_t arg);
+void acpigen_write_return_byte(uint8_t arg);
 
 int get_cst_entries(acpi_cstate_t **);