Factor out cross-BL API into export headers suitable for 3rd party code
This patch adds a new include/export/ directory meant for inclusion in
third-party code. This is useful for cases where third-party code needs
to interact with TF-A interfaces and data structures (such as a custom
BL2-implementation like coreboot handing off to BL31). Directly
including headers from the TF-A repository avoids having to duplicate
all these definitions (and risk them going stale), but with the current
header structure this is not possible because handoff API definitions
are too deeply intertwined with other TF code/headers and chain-include
other headers that will not be available in the other environment.
The new approach aims to solve this by separating only the parts that
are really needed into these special headers that are self-contained and
will not chain-include other (non-export) headers. TF-A code should
never include them directly but should instead always include the
respective wrapper header, which will include the required prerequisites
(like <stdint.h>) before including the export header. Third-party code
can include the export headers via its own wrappers that make sure the
necessary definitions are available in whatever way that environment can
provide them.
Change-Id: Ifd769320ba51371439a8e5dd5b79c2516c3b43ab
Signed-off-by: Julius Werner <jwerner@chromium.org>
diff --git a/include/export/plat/rockchip/common/plat_params_exp.h b/include/export/plat/rockchip/common/plat_params_exp.h
new file mode 100644
index 0000000..ccc9cd9
--- /dev/null
+++ b/include/export/plat/rockchip/common/plat_params_exp.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ARM_TRUSTED_FIRMWARE_EXPORT_PLAT_ROCKCHIP_COMMON_PLAT_PARAMS_EXP_H
+#define ARM_TRUSTED_FIRMWARE_EXPORT_PLAT_ROCKCHIP_COMMON_PLAT_PARAMS_EXP_H
+
+/* EXPORT HEADER -- See include/export/README for details! -- EXPORT HEADER */
+
+#include "../../../lib/bl_aux_params/bl_aux_params_exp.h"
+
+/* param type */
+enum bl_aux_rk_param_type {
+ BL_AUX_PARAM_RK_RESET_GPIO = BL_AUX_PARAM_VENDOR_SPECIFIC_FIRST,
+ BL_AUX_PARAM_RK_POWEROFF_GPIO,
+ BL_AUX_PARAM_RK_SUSPEND_GPIO,
+ BL_AUX_PARAM_RK_SUSPEND_APIO,
+};
+
+struct bl_aux_rk_apio_info {
+ uint8_t apio1 : 1;
+ uint8_t apio2 : 1;
+ uint8_t apio3 : 1;
+ uint8_t apio4 : 1;
+ uint8_t apio5 : 1;
+};
+
+struct bl_aux_param_rk_apio {
+ struct bl_aux_param_header h;
+ struct bl_aux_rk_apio_info apio;
+};
+
+#endif /* ARM_TRUSTED_FIRMWARE_EXPORT_PLAT_ROCKCHIP_COMMON_PLAT_PARAMS_EXP_H */