include/bsp/atsam-clock-config.h

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (c) 2017 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #ifndef ATSAM_CLOCK_CONFIG_H
0029 #define ATSAM_CLOCK_CONFIG_H
0030
0031 #include <rtems.h>
0032 #include <bsp/linker-symbols.h>
0033 #include <bspopts.h>
0034
0035 #ifdef __cplusplus
0036 extern "C" {
0037 #endif /* __cplusplus */
0038
0039 #if ATSAM_CHANGE_CLOCK_FROM_SRAM != 0
0040 /* Note: fast_text is the simplest section to put this code into. Other
0041  * possibilities would include creating a new section. */
0042 #define ATSAM_START_SRAM_SECTION BSP_FAST_TEXT_SECTION
0043 #else
0044 #define ATSAM_START_SRAM_SECTION
0045 #endif
0046
0047 struct atsam_clock_config {
0048   /* Initialization value for the PMC_PLLAR. */
0049   uint32_t pllar_init;
0050   /* Initialization value for the PMC_MCKR. */
0051   uint32_t mckr_init;
0052   /* Resulting frequency in Hz. */
0053   uint32_t mck_freq;
0054 };
0055
0056 ATSAM_START_SRAM_SECTION
0057 extern const struct atsam_clock_config atsam_clock_config;
0058
0059 #define BOARD_MCK (atsam_clock_config.mck_freq)
0060
0061 typedef struct BOARD_Sdram_Config {
0062   uint32_t sdramc_tr;
0063   uint32_t sdramc_cr;
0064   uint32_t sdramc_mdr;
0065   uint32_t sdramc_cfr1;
0066   uint32_t sdramc_lpr;
0067 } atsam_sdram_config;
0068
0069 ATSAM_START_SRAM_SECTION
0070 extern const atsam_sdram_config BOARD_Sdram_Config;
0071
0072 #ifdef __cplusplus
0073 }
0074 #endif /* __cplusplus */
0075
0076 #endif /* ATSAM_CLOCK_CONFIG_H */