acpi: Support writing a string

ACPI supports storing a simple null-terminated string. Add support for
this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/acpi/acpigen.c b/lib/acpi/acpigen.c
index 27d4eab..b254ef6 100644
--- a/lib/acpi/acpigen.c
+++ b/lib/acpi/acpigen.c
@@ -147,3 +147,9 @@ void acpigen_emit_string(struct acpi_ctx *ctx, const char *str)
 	acpigen_emit_stream(ctx, str, str ? strlen(str) : 0);
 	acpigen_emit_byte(ctx, '\0');
 }
+
+void acpigen_write_string(struct acpi_ctx *ctx, const char *str)
+{
+	acpigen_emit_byte(ctx, STRING_PREFIX);
+	acpigen_emit_string(ctx, str);
+}