From da7cff338f08cf43706a96bcd8cf398b7fb6ae2d Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Tue, 22 Sep 2020 12:44:57 -0600 Subject: acpi: Add support for conditions and return values Add functions to support generating ACPI code for condition checks and return values. Signed-off-by: Simon Glass --- lib/acpi/acpigen.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) (limited to 'lib') diff --git a/lib/acpi/acpigen.c b/lib/acpi/acpigen.c index 527de89..2518bf8 100644 --- a/lib/acpi/acpigen.c +++ b/lib/acpi/acpigen.c @@ -541,6 +541,74 @@ void acpigen_write_debug_string(struct acpi_ctx *ctx, const char *str) acpigen_emit_ext_op(ctx, DEBUG_OP); } +void acpigen_write_if(struct acpi_ctx *ctx) +{ + acpigen_emit_byte(ctx, IF_OP); + acpigen_write_len_f(ctx); +} + +void acpigen_write_if_lequal_op_int(struct acpi_ctx *ctx, uint op, u64 val) +{ + acpigen_write_if(ctx); + acpigen_emit_byte(ctx, LEQUAL_OP); + acpigen_emit_byte(ctx, op); + acpigen_write_integer(ctx, val); +} + +void acpigen_write_else(struct acpi_ctx *ctx) +{ + acpigen_emit_byte(ctx, ELSE_OP); + acpigen_write_len_f(ctx); +} + +void acpigen_write_to_buffer(struct acpi_ctx *ctx, uint src, uint dst) +{ + acpigen_emit_byte(ctx, TO_BUFFER_OP); + acpigen_emit_byte(ctx, src); + acpigen_emit_byte(ctx, dst); +} + +void acpigen_write_to_integer(struct acpi_ctx *ctx, uint src, uint dst) +{ + acpigen_emit_byte(ctx, TO_INTEGER_OP); + acpigen_emit_byte(ctx, src); + acpigen_emit_byte(ctx, dst); +} + +void acpigen_write_byte_buffer(struct acpi_ctx *ctx, u8 *arr, size_t size) +{ + size_t i; + + acpigen_emit_byte(ctx, BUFFER_OP); + acpigen_write_len_f(ctx); + acpigen_write_integer(ctx, size); + + for (i = 0; i < size; i++) + acpigen_emit_byte(ctx, arr[i]); + + acpigen_pop_len(ctx); +} + +void acpigen_write_return_byte_buffer(struct acpi_ctx *ctx, u8 *arr, + size_t size) +{ + acpigen_emit_byte(ctx, RETURN_OP); + acpigen_write_byte_buffer(ctx, arr, size); +} + +void acpigen_write_return_singleton_buffer(struct acpi_ctx *ctx, uint arg) +{ + u8 buf = arg; + + acpigen_write_return_byte_buffer(ctx, &buf, 1); +} + +void acpigen_write_return_byte(struct acpi_ctx *ctx, uint arg) +{ + acpigen_emit_byte(ctx, RETURN_OP); + acpigen_write_byte(ctx, arg); +} + /** * acpigen_get_dw0_in_local5() - Generate code to put dw0 cfg0 in local5 * -- cgit v1.1