2016-05-25 12:03:04 +01:00
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/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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2017-05-03 09:38:09 +01:00
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* SPDX-License-Identifier: BSD-3-Clause
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2016-05-25 12:03:04 +01:00
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*/
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2018-11-08 10:20:19 +00:00
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#ifndef PLAT_PARAMS_H
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#define PLAT_PARAMS_H
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2016-05-25 12:03:04 +01:00
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#include <stdint.h>
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/*
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* We defined several plat parameter structs for BL2 to pass platform related
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* parameters to Rockchip BL31 platform code. All plat parameters start with
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* a common header, which has a type field to indicate the parameter type, and
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* a next pointer points to next parameter. If the parameter is the last one in
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* the list, next pointer will points to NULL. After the header comes the
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* variable-sized members that describe the parameter. The picture below shows
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* how the parameters are kept in memory.
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*
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* head of list ---> +----------------+ --+
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* | type | |
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* +----------------+ |--> struct bl31_plat_param
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* +----| next | |
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* | +----------------+ --+
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* | | parameter data |
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* | +----------------+
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* |
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* +--> +----------------+ --+
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* | type | |
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* +----------------+ |--> struct bl31_plat_param
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* NULL <---| next | |
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* +----------------+ --+
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* | parameter data |
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* +----------------+
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*
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* Note: The SCTLR_EL3.A bit (Alignment fault check enable) of ARM TF is set,
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* so be sure each parameter struct starts on 64-bit aligned address. If not,
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* alignment fault will occur during accessing its data member.
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*/
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2016-09-09 19:43:15 +01:00
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#define BL31_GPIO_DIR_OUT 0
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#define BL31_GPIO_DIR_IN 1
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#define BL31_GPIO_LEVEL_LOW 0
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#define BL31_GPIO_LEVEL_HIGH 1
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#define BL31_GPIO_PULL_NONE 0
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#define BL31_GPIO_PULL_UP 1
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#define BL31_GPIO_PULL_DOWN 2
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2016-05-25 12:03:04 +01:00
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/* param type */
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enum {
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PARAM_NONE = 0,
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PARAM_RESET,
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PARAM_POWEROFF,
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2016-09-09 19:43:15 +01:00
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PARAM_SUSPEND_GPIO,
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2016-09-09 19:47:53 +01:00
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PARAM_SUSPEND_APIO,
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2017-06-09 23:22:44 +01:00
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PARAM_COREBOOT_TABLE,
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2016-09-09 19:47:53 +01:00
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};
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struct apio_info {
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uint8_t apio1 : 1;
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uint8_t apio2 : 1;
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uint8_t apio3 : 1;
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uint8_t apio4 : 1;
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uint8_t apio5 : 1;
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2016-05-25 12:03:04 +01:00
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};
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struct gpio_info {
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uint8_t polarity;
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uint8_t direction;
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uint8_t pull_mode;
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uint32_t index;
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};
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/* common header for all plat parameter type */
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struct bl31_plat_param {
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uint64_t type;
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void *next;
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};
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struct bl31_gpio_param {
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struct bl31_plat_param h;
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struct gpio_info gpio;
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};
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2016-09-09 19:47:53 +01:00
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struct bl31_apio_param {
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struct bl31_plat_param h;
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struct apio_info apio;
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};
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2017-06-09 23:22:44 +01:00
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struct bl31_u64_param {
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struct bl31_plat_param h;
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uint64_t value;
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};
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2018-11-08 10:20:19 +00:00
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#endif /* PLAT_PARAMS_H */
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