altera soc AMP（linux+bare-metal）

/****************************************************************************** * * Copyright 2013 Altera Corporation. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED. IN NO * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. * ******************************************************************************/ #include <stdint.h> #include <stdlib.h> #include <stdbool.h> #include <string.h> #include <assert.h> #include "socal/hps.h" #include "socal/socal.h" #include "socal/alt_sysmgr.h" #include "hwlib.h" #include "alt_clock_manager.h" #include "alt_mpu_registers.h" #define UINT12_MAX (4096) /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Useful Structures ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/ /* General structure used to hold parameters of various clock entities, */ typedef struct ALT_CLK_PARAMS_s { alt_freq_t freqcur; // current frequency of the clock alt_freq_t freqmin; // minimum allowed frequency for this clock alt_freq_t freqmax; // maximum allowed frequency for this clock uint32_t guardband : 7; // guardband percentage (0-100) if this clock // is a PLL, ignored otherwise uint32_t active : 1; // current state of activity of this clock } ALT_CLK_PARAMS_t; typedef struct ALT_EXT_CLK_PARAMBLOK_s { ALT_CLK_PARAMS_t clkosc1; // ALT_CLK_OSC1 ALT_CLK_PARAMS_t clkosc2; // ALT_CLK_OSC2 ALT_CLK_PARAMS_t periph; // ALT_CLK_F2H_PERIPH_REF ALT_CLK_PARAMS_t sdram; // ALT_CLK_F2H_SDRAM_REF } ALT_EXT_CLK_PARAMBLOK_t; /* Initializes the External Clock Frequency Limits block */ /* The first field is the current external clock frequency, and can be set by */ /* alt_clk_ext_clk_freq_set(), the second and third fields are the minimum and */ /* maximum frequencies, the fourth field is ignored, and the fifth field */ /* contains the current activity state of the clock, 1=active, 0=inactive. */ /* Values taken from Section 2.3 and Section 2.7.1 of the HHP HPS-Clocking */ /* NPP specification. */ static ALT_EXT_CLK_PARAMBLOK_t alt_ext_clk_paramblok = {{25000000, 10000000, 50000000, 0, 1}, {25000000, 10000000, 50000000, 0, 1}, {0, 10000000, 50000000, 0, 1}, {0, 10000000, 50000000, 0, 1}}; /* PLL frequency limits */ typedef struct ALT_PLL_CLK_PARAMBLOK_s { ALT_CLK_PARAMS_t MainPLL_600; // Main PLL values for 600 MHz SoC ALT_CLK_PARAMS_t PeriphPLL_600; // Peripheral PLL values for 600 MHz SoC ALT_CLK_PARAMS_t SDRAMPLL_600; // SDRAM PLL values for 600 MHz SoC ALT_CLK_PARAMS_t MainPLL_800; // Main PLL values for 800 MHz SoC ALT_CLK_PARAMS_t PeriphPLL_800; // Peripheral PLL values for 800 MHz SoC ALT_CLK_PARAMS_t SDRAMPLL_800; // SDRAM PLL values for 800 MHz SoC } ALT_PLL_CLK_PARAMBLOK_t; /* Initializes the PLL frequency limits block */ /* The first field is the current frequency, the second and third fields */ /* are the design limits of the PLLs as listed in Section 3.2.1.2 of the */ /* HHP HPS-Clocking NPP document. The fourth field of each line is the */ /* guardband percentage, and the fifth field of each line is the current */ /* state of the PLL, 1=active, 0=inactive. */ #define ALT_ORIGINAL_GUARDBAND_VAL 20 #define ALT_GUARDBAND_LIMIT 20 static ALT_PLL_CLK_PARAMBLOK_t alt_pll_clk_paramblok = {{0, 320000000, 1200000000, ALT_ORIGINAL_GUARDBAND_VAL, 0}, {0, 320000000, 900000000, ALT_ORIGINAL_GUARDBAND_VAL, 0}, {0, 320000000, 800000000, ALT_ORIGINAL_GUARDBAND_VAL, 0}, {0, 320000000, 1600000000, ALT_ORIGINAL_GUARDBAND_VAL, 1}, {0, 320000000, 1250000000, ALT_ORIGINAL_GUARDBAND_VAL, 1}, {0, 320000000, 1066000000, ALT_ORIGINAL_GUARDBAND_VAL, 1}}; /* PLL counter frequency limits */ typedef struct ALT_PLL_CNTR_FREQMAX_s { alt_freq_t MainPLL_C0; // Main PLL Counter 0 parameter block alt_freq_t MainPLL_C1; // Main PLL Counter 1 parameter block alt_freq_t MainPLL_C2; // Main PLL Counter 2 parameter block alt_freq_t MainPLL_C3; // Main PLL Counter 3 parameter block alt_freq_t MainPLL_C4; // Main PLL Counter 4 parameter block alt_freq_t MainPLL_C5; // Main PLL Counter 5 parameter block alt_freq_t PeriphPLL_C0; // Peripheral PLL Counter 0 parameter block alt_freq_t PeriphPLL_C1; // Peripheral PLL Counter 1 parameter block alt_freq_t PeriphPLL_C2; // Peripheral PLL Counter 2 parameter block alt_freq_t PeriphPLL_C3; // Peripheral PLL Counter 3 parameter block alt_freq_t PeriphPLL_C4; // Peripheral PLL Counter 4 parameter block alt_freq_t PeriphPLL_C5; // Peripheral PLL Counter 5 parameter block alt_freq_t SDRAMPLL_C0; // SDRAM PLL Counter 0 parameter block alt_freq_t SDRAMPLL_C1; // SDRAM PLL Counter 1 parameter block alt_freq_t SDRAMPLL_C2; // SDRAM PLL Counter 2 parameter block alt_freq_t SDRAMPLL_C5; // SDRAM PLL Counter 5 parameter block } ALT_PLL_CNTR_FREQMAX_t; /* Initializes the PLL Counter output maximum frequency block */ static ALT_PLL_CNTR_FREQMAX_t alt_pll_cntr_maxfreq = {800000000, /* Main PLL Outputs */ 400000000, 400000000,