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https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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Update RX63N start-up to configure the high speed clock prior to initialising the C run time library.
This commit is contained in:
Richard Barry
parent
a3c45eb1da
commit
05bc21e115
6 changed files with 169 additions and 152 deletions
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@ -28,102 +28,115 @@
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* And Renesas Solutions Corp.,All Rights Reserved.
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*
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*********************************************************************/
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/* Types used in this file. */
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#include "typedefine.h"
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#include <machine.h>
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#include <_h_c_lib.h>
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//#include <stddef.h> // Remove the comment when you use errno
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//#include <stdlib.h> // Remove the comment when you use rand()
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#include "typedefine.h"
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#include "stacksct.h"
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/* Defines machine level functions used in this file */
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#include <machine.h>
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#pragma inline_asm Change_PSW_PM_to_UserMode
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static void Change_PSW_PM_to_UserMode(void);
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/* Defines MCU configuration functions used in this file */
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#include <_h_c_lib.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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void PowerON_Reset_PC(void);
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void main(void);
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#ifdef __cplusplus
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}
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#endif
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/* Hardware definitions" */
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#include "iodefine.h"
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#ifdef __cplusplus // Use SIM I/O
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extern "C" {
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#endif
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extern void _INIT_IOLIB(void);
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extern void _CLOSEALL(void);
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#ifdef __cplusplus
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}
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#endif
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/* Defines the size of the stack which configured in this file */
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#include "stacksct.h"
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#define PSW_init 0x00010000
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#define FPSW_init 0x00000100
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//extern void srand(_UINT); // Remove the comment when you use rand()
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//extern _SBYTE *_s1ptr; // Remove the comment when you use strtok()
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//#ifdef __cplusplus // Use Hardware Setup
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//extern "C" {
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//#endif
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//extern void HardwareSetup(void);
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//#ifdef __cplusplus
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//}
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//#endif
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//#ifdef __cplusplus // Remove the comment when you use global class object
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//extern "C" { // Sections C$INIT and C$END will be generated
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//#endif
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//extern void _CALL_INIT(void);
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//extern void _CALL_END(void);
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//#ifdef __cplusplus
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//}
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//#endif
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extern void HardwareSetup( void );
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#pragma section ResetPRG
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#pragma entry PowerON_Reset_PC
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/* It is ok to use stack variables here because "#pragma entry" is used, so the
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stack is setup in the compiler generated prologue. */
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void PowerON_Reset_PC(void)
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{
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volatile unsigned int i;
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set_intb((unsigned long)__sectop("C$VECT"));
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set_fpsw(FPSW_init);
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/* MCU boots using the LOCO, so turn the speed up before setting up the C
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run-time environment.
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Clock Description Frequency
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----------------------------------------
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Input Clock Frequency............ 12 MHz
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PLL frequency (x16).............. 192 MHz
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Internal Clock Frequency......... 96 MHz
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Peripheral Clock Frequency....... 48 MHz
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USB Clock Frequency.............. 48 MHz
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External Bus Clock Frequency..... 24 MHz */
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/* Protect off. */
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SYSTEM.PRCR.WORD = 0xA50B;
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/* Uncomment if not using sub-clock */
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//SYSTEM.SOSCCR.BYTE = 0x01; /* stop sub-clock */
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SYSTEM.SOSCCR.BYTE = 0x00; /* Enable sub-clock for RTC */
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/* Wait 131,072 cycles * 12 MHz = 10.9 ms */
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SYSTEM.MOSCWTCR.BYTE = 0x0D;
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/* PLL wait is 4,194,304 cycles (default) * 192 MHz (12 MHz * 16) = 20.1 ms*/
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SYSTEM.PLLWTCR.BYTE = 0x04;
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/* x16 @PLL */
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SYSTEM.PLLCR.WORD = 0x0F00;
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/* EXTAL ON */
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SYSTEM.MOSCCR.BYTE = 0x00;
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/* PLL ON */
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SYSTEM.PLLCR2.BYTE = 0x00;
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for(i = 0;i< 0x168;i++)
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{
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/* Wait over 12ms */
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nop() ;
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}
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/* Setup system clocks
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SCKCR - System Clock Control Register
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b31:b28 FCK[3:0] 0x02 = Flash clock: PLL/4 = (192 / 4) = 48 MHz
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b27:b24 ICK[3:0] 0x01 = System clock: PLL/2 = (192 / 2) = 96 MHz
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b23 PSTOP1 0x00 = BCLK pin output is enabled
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b19:b16 BCK[3:0] 0x03 = BCLK: PLL/8 = 24 MHz
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b11:b8 PCKB[3:0] 0x02 = Peripheral clock B: PLL/4 = 48 MHz
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*/
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SYSTEM.SCKCR.LONG = 0x21031222; /* ICK=PLL/2,BCK,FCK,PCK=PLL/4 */
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/* Setup IEBUS and USB clocks
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SCKCR2 - System Clock Control Register 2
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b7:b4 UCK[3:0] 0x03 = USB clock is PLL/4 = 48 MHz
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b3:b0 IEBCK[3:0] 0x01 = IE Bus clock is PLL/2 = 96 MHz
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*/
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SYSTEM.SCKCR2.WORD = 0x0031;
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/* ICLK, PCLKB, FCLK, BCLK, IECLK, and USBCLK all come from PLL circuit */
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SYSTEM.SCKCR3.WORD = 0x0400;
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/* Protect on. */
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SYSTEM.PRCR.WORD = 0xA500;
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/* Initialize C runtime environment */
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_INITSCT();
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// _INIT_IOLIB(); // Remove the comment when you use SIM I/O
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// errno=0; // Remove the comment when you use errno
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// srand((_UINT)1); // Remove the comment when you use rand()
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// _s1ptr=NULL; // Remove the comment when you use strtok()
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// HardwareSetup(); // Use Hardware Setup
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/* Setup the hardware for the RSK. */
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HardwareSetup();
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nop();
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// _CALL_INIT(); // Remove the comment when you use global class object
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set_psw(PSW_init); // Set Ubit & Ibit for PSW
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// Change_PSW_PM_to_UserMode(); // DO NOT CHANGE TO USER MODE IF USING FREERTOS!
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( void ) Change_PSW_PM_to_UserMode; // Just to avoid compiler warnings.
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/* Set Ubit and Ibit for PSW. */
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set_psw(PSW_init);
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/* Call the application code. */
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main();
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// _CLOSEALL(); // Use SIM I/O
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// _CALL_END(); // Remove the comment when you use global class object
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/* Main should not return. */
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brk();
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}
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static void Change_PSW_PM_to_UserMode(void)
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{
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MVFC PSW,R1
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OR #00100000h,R1
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PUSH.L R1
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MVFC PC,R1
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ADD #10,R1
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PUSH.L R1
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RTE
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NOP
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NOP
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}
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