1 files changed, 92 insertions, 0 deletions
diff --git a/plat/rockchip/common/include/plat_params.h b/plat/rockchip/common/include/plat_params.h
new file mode 100644
index 00000000..aa13f878
--- /dev/null
+++ b/plat/rockchip/common/include/plat_params.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __PLAT_PARAMS_H__
+#define __PLAT_PARAMS_H__
+
+#include <stdint.h>
+
+/*
+ * We defined several plat parameter structs for BL2 to pass platform related
+ * parameters to Rockchip BL31 platform code.  All plat parameters start with
+ * a common header, which has a type field to indicate the parameter type, and
+ * a next pointer points to next parameter. If the parameter is the last one in
+ * the list, next pointer will points to NULL.  After the header comes the
+ * variable-sized members that describe the parameter. The picture below shows
+ * how the parameters are kept in memory.
+ *
+ * head of list  ---> +----------------+ --+
+ *                    |      type      |   |
+ *                    +----------------+   |--> struct bl31_plat_param
+ *               +----|      next      |   |
+ *               |    +----------------+ --+
+ *               |    | parameter data |
+ *               |    +----------------+
+ *               |
+ *               +--> +----------------+ --+
+ *                    |      type      |   |
+ *                    +----------------+   |--> struct bl31_plat_param
+ *           NULL <---|      next      |   |
+ *                    +----------------+ --+
+ *                    | parameter data |
+ *                    +----------------+
+ *
+ * Note: The SCTLR_EL3.A bit (Alignment fault check enable) of ARM TF is set,
+ * so be sure each parameter struct starts on 64-bit aligned address. If not,
+ * alignment fault will occur during accessing its data member.
+ */
+
+#define BL31_GPIO_DIR_OUT		0
+#define BL31_GPIO_DIR_IN		1
+
+#define BL31_GPIO_LEVEL_LOW		0
+#define BL31_GPIO_LEVEL_HIGH		1
+
+#define BL31_GPIO_PULL_NONE		0
+#define BL31_GPIO_PULL_UP		1
+#define BL31_GPIO_PULL_DOWN		2
+
+/* param type */
+enum {
+	PARAM_NONE = 0,
+	PARAM_RESET,
+	PARAM_POWEROFF,
+	PARAM_SUSPEND_GPIO,
+	PARAM_SUSPEND_APIO,
+};
+
+struct apio_info {
+	uint8_t apio1 : 1;
+	uint8_t apio2 : 1;
+	uint8_t apio3 : 1;
+	uint8_t apio4 : 1;
+	uint8_t apio5 : 1;
+};
+
+struct gpio_info {
+	uint8_t polarity;
+	uint8_t direction;
+	uint8_t pull_mode;
+	uint32_t index;
+};
+
+/* common header for all plat parameter type */
+struct bl31_plat_param {
+	uint64_t type;
+	void *next;
+};
+
+struct bl31_gpio_param {
+	struct bl31_plat_param h;
+	struct gpio_info gpio;
+};
+
+struct bl31_apio_param {
+	struct bl31_plat_param h;
+	struct apio_info apio;
+};
+
+#endif /* __PLAT_PARAMS_H__ */