| /*********************************************************************************************************************** | |
| * DISCLAIMER | |
| * This software is supplied by Renesas Electronics Corporation and is only | |
| * intended for use with Renesas products. No other uses are authorized. This | |
| * software is owned by Renesas Electronics Corporation and is protected under | |
| * all applicable laws, including copyright laws. | |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING | |
| * THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT | |
| * LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE | |
| * AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED. | |
| * TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS | |
| * ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE | |
| * FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR | |
| * ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE | |
| * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
| * Renesas reserves the right, without notice, to make changes to this software | |
| * and to discontinue the availability of this software. By using this software, | |
| * you agree to the additional terms and conditions found by accessing the | |
| * following link: | |
| * http://www.renesas.com/disclaimer | |
| * | |
| * Copyright (C) 2014 Renesas Electronics Corporation. All rights reserved. | |
| ***********************************************************************************************************************/ | |
| /*********************************************************************************************************************** | |
| * System Name : RZ/T1 Init program | |
| * File Name : loader_init2.c | |
| * Version : 0.1 | |
| * Device : R7S910018 | |
| * Abstract : Loader program 2 | |
| * Tool-Chain : GNUARM-NONEv14.02-EABI | |
| * OS : not use | |
| * H/W Platform : Renesas Starter Kit for RZ/T1(Preliminary) | |
| * Description : Initialise the peripheral settings of RZ/T1 | |
| * Limitation : none | |
| ***********************************************************************************************************************/ | |
| /*********************************************************************************************************************** | |
| * History : DD.MM.YYYY Version Description | |
| * : 21.05.2015 1.00 First Release | |
| ***********************************************************************************************************************/ | |
| /*********************************************************************************************************************** | |
| Includes <System Includes> , "Project Includes" | |
| ***********************************************************************************************************************/ | |
| #include <stdint.h> | |
| #include "iodefine.h" | |
| #include "r_cg_cgc.h" | |
| #include "r_cg_mpc.h" | |
| #include "r_system.h" | |
| #include "r_reset.h" | |
| #include "r_atcm_init.h" | |
| #include "r_typedefs.h" | |
| /*********************************************************************************************************************** | |
| Macro definitions | |
| ***********************************************************************************************************************/ | |
| /*********************************************************************************************************************** | |
| Typedef definitions | |
| ***********************************************************************************************************************/ | |
| /*********************************************************************************************************************** | |
| Private variables and functions | |
| ***********************************************************************************************************************/ | |
| static void reset_check (void); | |
| static void cpg_init (void); | |
| /*********************************************************************************************************************** | |
| Imported global variables and functions (from other files) | |
| ***********************************************************************************************************************/ | |
| extern void main(void); | |
| extern void set_low_vec(void); | |
| extern void cache_init(void); | |
| /*********************************************************************************************************************** | |
| Exported global variables and functions (to be accessed by other files) | |
| ***********************************************************************************************************************/ | |
| void loader_init2 (void); | |
| /*********************************************************************************************************************** | |
| * Function Name : loader_init2 | |
| * Description : Initialise system by loader program 2 | |
| * Arguments : none | |
| * Return Value : none | |
| ***********************************************************************************************************************/ | |
| void loader_init2 (void) | |
| { | |
| /* Check the reset source */ | |
| reset_check(); | |
| /* Set CPU clock and LOCO clock */ | |
| cpg_init(); | |
| /* Set ATCM access wait to 1-wait with optimisation */ | |
| /* Caution: ATCM_WAIT_0 is permitted if CPUCLK = 150MHz or 300MHz. | |
| ATCM_WAIT_1_OPT is permitted if CPUCLK = 450MHz or 600MHz.*/ | |
| R_ATCM_WaitSet(ATCM_WAIT_1_OPT); | |
| /* Initialise I1, D1 Cache and MPU setting */ | |
| #warning Cache not enabled. | |
| // cache_init(); | |
| /* Set RZ/T1 to Low-vector (SCTLR.V = 0) */ | |
| set_low_vec(); | |
| /* Jump to _main() */ | |
| main(); | |
| } | |
| /*********************************************************************************************************************** | |
| End of function loader_init2 | |
| ***********************************************************************************************************************/ | |
| /*********************************************************************************************************************** | |
| * Function Name : reset_check | |
| * Description : Check the reset source and execute the each sequence. | |
| * When error source number 35 is generated, set P77 pin to High. | |
| * Arguments : none | |
| * Return Value : none | |
| ***********************************************************************************************************************/ | |
| static void reset_check(void) | |
| { | |
| volatile uint8_t result; | |
| volatile uint32_t dummy; | |
| UNUSED_VARIABLE(result); | |
| UNUSED_VARIABLE(dummy); | |
| /* Check the reset status flag and execute the each sequence */ | |
| if (RST_SOURCE_ECM == SYSTEM.RSTSR0.LONG) | |
| { | |
| /* Enable writing to the RSTSR0 register */ | |
| r_rst_write_enable(); | |
| /* Clear reset factor flag */ | |
| SYSTEM.RSTSR0.LONG = 0x00000000; | |
| /* Disable writing to the RSTSR0 register */ | |
| r_rst_write_disable(); | |
| /* Please coding the User program */ | |
| } | |
| /* Software reset 1 is generated */ | |
| else if (RST_SOURCE_SWR1 == SYSTEM.RSTSR0.LONG) | |
| { | |
| /* Clear reset status flag */ | |
| /* Enable writing to the RSTSR0 register */ | |
| r_rst_write_enable(); | |
| /* Clear reset factor flag */ | |
| SYSTEM.RSTSR0.LONG = 0x00000000; | |
| /* Disable writing to the RSTSR0 register */ | |
| r_rst_write_disable(); | |
| /* Please coding the User program */ | |
| } | |
| else if (RST_SOURCE_RES == SYSTEM.RSTSR0.LONG) // RES# pin reset is generated | |
| { | |
| /* Clear reset status flag */ | |
| /* Enable writing to the RSTSR0 register */ | |
| r_rst_write_enable(); | |
| /* Clear reset factor flag */ | |
| SYSTEM.RSTSR0.LONG = 0x00000000; | |
| /* Disable writing to the RSTSR0 register */ | |
| r_rst_write_disable(); | |
| /* Please add user code */ | |
| } | |
| /* Any reset is not generated */ | |
| else | |
| { | |
| /* Please add user code */ | |
| } | |
| } | |
| /*********************************************************************************************************************** | |
| End of function reset_check | |
| ***********************************************************************************************************************/ | |
| /*********************************************************************************************************************** | |
| * Function Name : cpg_init | |
| * Description : Set CPU clock and LOCO clock by CPG function | |
| * Arguments : none | |
| * Return Value : none | |
| ***********************************************************************************************************************/ | |
| static void cpg_init(void) | |
| { | |
| volatile uint32_t dummy; | |
| UNUSED_VARIABLE(dummy); | |
| /* Enables writing to the registers related to CPG function */ | |
| R_CPG_WriteEnable(); | |
| /* Enables LOCO clock operation */ | |
| SYSTEM.LOCOCR.BIT.LCSTP = CPG_LOCO_ENABLE; | |
| /* Set CPUCLK to 450MHz, and dummy read at three times */ | |
| SYSTEM.PLL1CR.LONG = CPG_CPUCLK_450_MHz; | |
| dummy = SYSTEM.PLL1CR.LONG; | |
| dummy = SYSTEM.PLL1CR.LONG; | |
| dummy = SYSTEM.PLL1CR.LONG; | |
| /* Enables PLL1 operation */ | |
| SYSTEM.PLL1CR2.LONG = CPG_PLL1_ON; | |
| /* Disables writing to the registers related to CPG function */ | |
| R_CPG_WriteDisable(); | |
| /* Wait about 100us for PLL1 (and LOCO) stabilisation */ | |
| R_CPG_PLLWait(); | |
| /* Enables writing to the registers related to CPG function */ | |
| R_CPG_WriteEnable(); | |
| /* Selects the PLL1 as clock source */ | |
| SYSTEM.SCKCR2.LONG = CPG_SELECT_PLL1; | |
| /* Disables writing to the registers related to CPG function */ | |
| R_CPG_WriteDisable(); | |
| } | |
| /*********************************************************************************************************************** | |
| End of function cpg_init | |
| ***********************************************************************************************************************/ | |
| /* End of File */ | |