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authorFurquan Shaikh <furquan@google.com>2020-04-27 23:06:30 -0700
committerFurquan Shaikh <furquan@google.com>2020-04-29 08:43:52 +0000
commit2c213d35b0cdcc6def4431c736c5bc64abe160fb (patch)
tree4642f33d63ebdc211aad1431770caab05ea86caf
parentf510c75d649ba7e4f8a441174b8d9c0b7e0c7c9b (diff)
arch/x86/acpigen: Add helpers for Store() and If (Lequal (...))
This change adds the following acpigen helpers: a. acpigen_write_store_op_to_namestr: This generates ACPI code for storing an ACPI OP to name string b. acpigen_write_if_lequal_namestr_int: This generates ACPI code for checking if operand1 and operand2 are equal where operand1 is namestring and operand2 is an integer. Change-Id: I84c158361c0725c2927f06be35391e61f627a453 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40783 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
-rw-r--r--src/arch/x86/acpigen.c22
-rw-r--r--src/arch/x86/include/arch/acpigen.h2
2 files changed, 24 insertions, 0 deletions
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 715c38b598..82654e18dd 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -1186,6 +1186,14 @@ void acpigen_write_store_ops(uint8_t src, uint8_t dst)
acpigen_emit_byte(dst);
}
+/* Store (src, "namestr") */
+void acpigen_write_store_op_to_namestr(uint8_t src, const char *dst)
+{
+ acpigen_write_store();
+ acpigen_emit_byte(src);
+ acpigen_emit_namestring(dst);
+}
+
/* Or (arg1, arg2, res) */
void acpigen_write_or(uint8_t arg1, uint8_t arg2, uint8_t res)
{
@@ -1274,6 +1282,20 @@ void acpigen_write_if_lequal_op_int(uint8_t op, uint64_t val)
acpigen_write_integer(val);
}
+/*
+ * Generates ACPI code for checking if operand1 and operand2 are equal, where,
+ * operand1 is namestring and operand2 is an integer.
+ *
+ * If (Lequal ("namestr", val))
+ */
+void acpigen_write_if_lequal_namestr_int(const char *namestr, uint64_t val)
+{
+ acpigen_write_if();
+ acpigen_emit_byte(LEQUAL_OP);
+ acpigen_emit_namestring(namestr);
+ acpigen_write_integer(val);
+}
+
void acpigen_write_else(void)
{
acpigen_emit_byte(ELSE_OP);
diff --git a/src/arch/x86/include/arch/acpigen.h b/src/arch/x86/include/arch/acpigen.h
index 0eee7ffea7..3a74db11e9 100644
--- a/src/arch/x86/include/arch/acpigen.h
+++ b/src/arch/x86/include/arch/acpigen.h
@@ -351,6 +351,7 @@ void acpigen_write_power_res(const char *name, uint8_t level, uint16_t order,
void acpigen_write_sleep(uint64_t sleep_ms);
void acpigen_write_store(void);
void acpigen_write_store_ops(uint8_t src, uint8_t dst);
+void acpigen_write_store_op_to_namestr(uint8_t src, const char *dst);
void acpigen_write_or(uint8_t arg1, uint8_t arg2, uint8_t res);
void acpigen_write_xor(uint8_t arg1, uint8_t arg2, uint8_t res);
void acpigen_write_and(uint8_t arg1, uint8_t arg2, uint8_t res);
@@ -361,6 +362,7 @@ 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_op_int(uint8_t op, uint64_t val);
+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);