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mbed-os/targets/TARGET_TOSHIBA/TARGET_TMPM4G9/device/system_TMPM4G9.c

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/**
*******************************************************************************
* @file system_TMPM4G9.c
* @brief CMSIS Cortex-M4 Device Peripheral Access Layer Source File for the
* TOSHIBA 'TMPM4Gx' Device Series
* @version 1.0.0.0
* $Date:: 2018-04-02 #$
*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright(C) 2019, Toshiba Electronic Device Solutions Corporation
*
* 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. Neither the name of Nuvoton Technology Corp. nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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 "TMPM4G9.h"
/*-------- <<< Start of configuration section >>> ----------------------------*/
/* Semi-Independent Watchdog Timer (SIWDT) Configuration */
#define SIWD_SETUP (1U) /* 1:Disable SIWD, 0:Enable SIWD */
#define SIWDEN_Val (0x00000000UL) /* SIWD Disable */
#define SIWDCR_Val (0x000000B1UL) /* SIWD Disable code */
/* Clock Generator (CG) Configuration */
#define CLOCK_SETUP (1U) /* 1:External HOSC, 0: Internal HOSC */
#define SYSCR_GEAR_Val (0x00000000UL) /* GEAR = fc */
#define SYSCR_MCKSEL_Val (0x00000001UL) /* fsysm(phiT0m) = fsysh(phiT0h) / 2 */
#define STBYCR_Val (0x00000000UL)
#define CG_8M_MUL_20_FPLL (0x00245028UL<<8U) /* fPLL = 8MHz * 20 */
#define CG_10M_MUL_16_FPLL (0x002E5020UL<<8U) /* fPLL = 10MHz * 16 */
#define CG_12M_MUL_13_3125_FPLL (0x0036DA1AUL<<8U) /* fPLL = 12MHz * 13.3125 */
#define CG_16M_MUL_10_FPLL (0x0048D014UL<<8U) /* fPLL = 16MHz * 10 */
#define CG_20M_MUL_8_FPLL (0x005AD010UL<<8U) /* fPLL = 20MHz * 8 */
#define CG_PLL0SEL_PLL0ON_SET (0x00000001UL)
#define CG_PLL0SEL_PLL0ON_CLEAR (0xFFFFFFFEUL)
#define CG_PLL0SEL_PLL0SEL_SET (0x00000002UL)
#define CG_PLL0SEL_PLL0SEL_CLEAR (0xFFFFFFFDUL)
#define CG_SYSCR_MCKSEL_SET (SYSCR_MCKSEL_Val << 6U)
#define CG_SYSCR_MCKSELGST_Val (SYSCR_MCKSEL_Val << 22U)
#define CG_SYSCR_MCKSELPST_Val (SYSCR_MCKSEL_Val << 30U)
#define CG_OSCCR_IHOSC1EN_CLEAR (0xFFFFFFFEUL)
#define CG_OSCCR_EOSCEN_SET (0x00000002UL)
#define CG_OSCCR_OSCSEL_SET (0x00000100UL)
#define CG_WUPHCR_WUON_START_SET (0x00000001UL)
#define EXT_CG_WUPHCR_WUCLK_SET (0x00000000UL) /* WUCLK for External HOSC select the IHOSC1 */
#if (CLOCK_SETUP)
#define CG_WUPHCR_WUCLK_SET (0x00000100UL) /* WUCLK for Inital/Lockup time */
#define PLL0SEL_Ready CG_10M_MUL_16_FPLL
#else
#define CG_WUPHCR_WUCLK_SET (0x00000000UL) /* WUCLK for Inital/Lockup time */
#define PLL0SEL_Ready CG_10M_MUL_16_FPLL
#endif
#define PLL0SEL_Val (PLL0SEL_Ready|0x00000003UL)
#define PLL0SEL_MASK (0xFFFFFF00UL)
/*-------- <<< End of configuration section >>> ------------------------------*/
/*-------- DEFINES -----------------------------------------------------------*/
/* Define clocks */
#define EOSC_8M (8000000UL)
#define EOSC_10M (10000000UL)
#define EOSC_12M (12000000UL)
#define EOSC_16M (16000000UL)
#define EOSC_20M (20000000UL)
#define IOSC_10M (10000000UL)
#define EXTALH EOSC_10M /* External high-speed oscillator freq */
#define IXTALH IOSC_10M /* Internal high-speed oscillator freq */
#define EOSC_8M_DIV2_PLLON (160000000UL) /* 8.00MHz * 40.0000 / 2 */
#define EOSC_10M_DIV2_PLLON (160000000UL) /* 10.00MHz * 32.0000 / 2 */
#define EOSC_12M_DIV2_PLLON (159750000UL) /* 12.00MHz * 26.6250 / 2 */
#define EOSC_16M_DIV2_PLLON (160000000UL) /* 16.00MHz * 20.0000 / 2 */
#define EOSC_20M_DIV2_PLLON (160000000UL) /* 20.00MHz * 16.0000 / 2 */
#define IOSC_10M_DIV2_PLLON (160000000UL) /* 10.00MHz * 32.0000 / 2 */
/* Configure Warm-up time */
#define HZ_1M (1000000UL)
#define WU_TIME_EXT (5000UL) /* warm-up time for EXT is 5ms */
#define INIT_TIME_PLL (100UL) /* Initial time for PLL is 100us */
#define LOCKUP_TIME_PLL (400UL) /* Lockup time for PLL is 400us */
#define WUPHCR_WUPT_EXT ((uint32_t)(((((uint64_t)WU_TIME_EXT * IXTALH / HZ_1M) - 16UL) /16UL) << 20U)) /* OSCCR<WUPT11:0> = (warm-up time(us) * IXTALH - 16) / 16 */
#if (CLOCK_SETUP)
#define WUPHCR_INIT_PLL ((uint32_t)(((((uint64_t)INIT_TIME_PLL * EXTALH / HZ_1M) - 16UL) /16UL) << 20U))
#define WUPHCR_LUPT_PLL ((uint32_t)(((((uint64_t)LOCKUP_TIME_PLL * EXTALH / HZ_1M) - 16UL) /16UL) << 20U))
#else
#define WUPHCR_INIT_PLL ((uint32_t)(((((uint64_t)INIT_TIME_PLL * IXTALH / HZ_1M) - 16UL) /16UL) << 20U))
#define WUPHCR_LUPT_PLL ((uint32_t)(((((uint64_t)LOCKUP_TIME_PLL * IXTALH / HZ_1M) - 16UL) /16UL) << 20U))
#endif
/* Determine core clock frequency according to settings */
/* System clock is high-speed clock*/
#if (CLOCK_SETUP)
#define CORE_TALH (EXTALH)
#else
#define CORE_TALH (IXTALH)
#endif
#if ((PLL0SEL_Val & (1U<<1U)) && (PLL0SEL_Val & (1U<<0U))) /* If PLL selected and enabled */
#if (CORE_TALH == EOSC_8M) /* If input is 8MHz */
#if ((PLL0SEL_Val & PLL0SEL_MASK) == (CG_8M_MUL_20_FPLL))
#define __CORE_CLK EOSC_8M_DIV2_PLLON /* output clock is 160MHz */
#else /* fc -> reserved */
#define __CORE_CLK (0U)
#endif /* End input is 8MHz */
#elif (CORE_TALH == EOSC_10M) /* If input is 10MHz */
#if ((PLL0SEL_Val & PLL0SEL_MASK) == CG_10M_MUL_16_FPLL)
#define __CORE_CLK EOSC_10M_DIV2_PLLON /* output clock is 160MHz */
#else /* fc -> reserved */
#define __CORE_CLK (0U)
#endif /* End input is 10MHz */
#elif (CORE_TALH == EOSC_12M) /* If input is 12MHz */
#if ((PLL0SEL_Val & PLL0SEL_MASK) == CG_12M_MUL_13_3125_FPLL)
#define __CORE_CLK EOSC_12M_DIV2_PLLON /* output clock is 159.75MHz */
#else /* fc -> reserved */
#define __CORE_CLK (0U)
#endif /* End input is 12MHz */
#elif (CORE_TALH == EOSC_16M) /* If input is 16MHz */
#if ((PLL0SEL_Val & PLL0SEL_MASK) == CG_16M_MUL_10_FPLL)
#define __CORE_CLK EOSC_16M_DIV2_PLLON /* output clock is 160MHz */
#else /* fc -> reserved */
#define __CORE_CLK (0U)
#endif /* End input is 16MHz */
#elif (CORE_TALH == EOSC_20M) /* If input is 20MHz */
#if ((PLL0SEL_Val & PLL0SEL_MASK) == CG_20M_MUL_8_FPLL)
#define __CORE_CLK EOSC_20M_DIV2_PLLON /* output clock is 160MHz */
#else /* fc -> reserved */
#define __CORE_CLK (0U)
#endif /* End input is 20MHz */
#elif (CORE_TALH == IOSC_10M) /* If input is 10MHz */
#if ((PLL0SEL_Val & PLL0SEL_MASK) == CG_10M_MUL_16_FPLL)
#define __CORE_CLK IOSC_10M_DIV2_PLLON /* output clock is 160MHz */
#else /* fc -> reserved */
#define __CORE_CLK (0U)
#endif /* End input is 10MHz */
#else /* input clock not known */
#define __CORE_CLK (0U)
#error "Core Oscillator Frequency invalid!"
#endif /* End switch input clock */
#else
#define __CORE_CLK (CORE_TALH)
#endif
#if ((SYSCR_GEAR_Val & 7U) == 0U) /* Gear -> fc */
#define __CORE_SYS (__CORE_CLK)
#elif ((SYSCR_GEAR_Val & 7U) == 1U) /* Gear -> fc/2 */
#define __CORE_SYS (__CORE_CLK / 2U)
#elif ((SYSCR_GEAR_Val & 7U) == 2U) /* Gear -> fc/4 */
#define __CORE_SYS (__CORE_CLK / 4U )
#elif ((SYSCR_GEAR_Val & 7U) == 3U) /* Gear -> fc/8 */
#define __CORE_SYS (__CORE_CLK / 8U)
#elif ((SYSCR_GEAR_Val & 7U) == 4U) /* Gear -> fc/16 */
#define __CORE_SYS (__CORE_CLK / 16U)
#else /* Gear -> reserved */
#define __CORE_SYS (0U)
#endif
/* Clock Variable definitions */
uint32_t SystemCoreClock = __CORE_SYS; /*!< System Clock Frequency (Core Clock) */
uint32_t CoreClockInput = 0U;
/**
* Initialize the system
*
* @param none
* @return none
*
* @brief Update SystemCoreClock according register values.
*/
void SystemCoreClockUpdate(void)
{ /* Get Core Clock Frequency */
uint32_t CoreClock = 0U;
uint32_t regval = 0U;
uint32_t oscsel = 0U;
uint32_t pll0sel = 0U;
uint32_t pll0on = 0U;
CoreClockInput = 0U;
/* Determine clock frequency according to clock register values */
/* System clock is high-speed clock */
regval = TSB_CG->OSCCR;
oscsel = regval & CG_OSCCR_OSCSEL_SET;
if (oscsel) { /* If system clock is External high-speed oscillator freq */
CoreClock = EXTALH;
} else { /* If system clock is Internal high-speed oscillator freq */
CoreClock = IXTALH;
}
regval = TSB_CG->PLL0SEL;
pll0sel = regval & CG_PLL0SEL_PLL0SEL_SET;
pll0on = regval & CG_PLL0SEL_PLL0ON_SET;
if (pll0sel && pll0on) { /* If PLL enabled */
if (CoreClock == EOSC_8M) { /* If input is 8MHz */
if ((TSB_CG->PLL0SEL & PLL0SEL_MASK) == CG_8M_MUL_20_FPLL) {
CoreClockInput = EOSC_8M_DIV2_PLLON; /* output clock is 160MHz */
} else {
CoreClockInput = 0U; /* fc -> reserved */
}
} else if (CoreClock == EOSC_10M) { /* If input is 10MHz */
if ((TSB_CG->PLL0SEL & PLL0SEL_MASK) == CG_10M_MUL_16_FPLL) {
CoreClockInput = EOSC_10M_DIV2_PLLON; /* output clock is 160MHz */
} else {
CoreClockInput = 0U; /* fc -> reserved */
}
} else if (CoreClock == EOSC_12M) { /* If input is 12MHz */
if ((TSB_CG->PLL0SEL & PLL0SEL_MASK) == CG_12M_MUL_13_3125_FPLL) {
CoreClockInput = EOSC_12M_DIV2_PLLON; /* output clock is 159.75MHz */
} else {
CoreClockInput = 0U; /* fc -> reserved */
}
} else if (CoreClock == EOSC_16M) { /* If input is 16MHz */
if ((TSB_CG->PLL0SEL & PLL0SEL_MASK) == CG_16M_MUL_10_FPLL) {
CoreClockInput = EOSC_16M_DIV2_PLLON; /* output clock is 160MHz */
} else {
CoreClockInput = 0U; /* fc -> reserved */
}
} else if (CoreClock == EOSC_20M) { /* If input is 20MHz */
if ((TSB_CG->PLL0SEL & PLL0SEL_MASK) == CG_20M_MUL_8_FPLL) {
CoreClockInput = EOSC_20M_DIV2_PLLON; /* output clock is 160MHz */
} else {
CoreClockInput = 0U; /* fc -> reserved */
}
} else if (CoreClock == IOSC_10M) { /* If input is 10MHz */
if ((TSB_CG->PLL0SEL & PLL0SEL_MASK) == CG_10M_MUL_16_FPLL) {
CoreClockInput = IOSC_10M_DIV2_PLLON; /* output clock is 160MHz */
} else {
CoreClockInput = 0U; /* fc -> reserved */
}
} else {
CoreClockInput = 0U;
}
} else { /* If PLL not used */
CoreClockInput = CoreClock;
}
switch (TSB_CG->SYSCR & 7U) {
case 0U: /* Gear -> fc */
SystemCoreClock = CoreClockInput;
break;
case 1U: /* Gear -> fc/2 */
SystemCoreClock = CoreClockInput / 2U;
break;
case 2U: /* Gear -> fc/4 */
SystemCoreClock = CoreClockInput / 4U;
break;
case 3U: /* Gear -> fc/8 */
SystemCoreClock = CoreClockInput / 8U;
break;
case 4U: /* Gear -> fc/16 */
SystemCoreClock = CoreClockInput / 16U;
break;
case 5U:
case 6U:
case 7U:
SystemCoreClock = 0U;
break;
default:
SystemCoreClock = 0U;
break;
}
}
/**
* Initialize the system
*
* @param none
* @return none
*
* @brief Setup the microcontroller system.
* Initialize the System.
*/
void SystemInit(void)
{
#if (SIWD_SETUP) /* Watchdog Setup */
/* SIWD Disable */
TSB_SIWD0->EN = SIWDEN_Val;
TSB_SIWD0->CR = SIWDCR_Val;
#else
/* SIWD Enable (Setting after a Reset) */
#endif
#if (__FPU_PRESENT == 1) && (__FPU_USED == 1) /* FPU setting */
SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */
#endif
#if (CLOCK_SETUP) /* Clock(external) Setup */
TSB_CG->SYSCR = SYSCR_GEAR_Val;
TSB_CG->WUPHCR = (WUPHCR_WUPT_EXT | EXT_CG_WUPHCR_WUCLK_SET);
TSB_CG->OSCCR |= CG_OSCCR_EOSCEN_SET;
TSB_CG->WUPHCR = (WUPHCR_WUPT_EXT | EXT_CG_WUPHCR_WUCLK_SET | CG_WUPHCR_WUON_START_SET);
while (TSB_CG_WUPHCR_WUEF) {
;
} /* Warm-up */
TSB_CG->OSCCR |= CG_OSCCR_OSCSEL_SET;
while (!TSB_CG_OSCCR_OSCF) {
;
} /* Confirm CGOSCCR<OSCF>="1" */
TSB_CG->OSCCR &= CG_OSCCR_IHOSC1EN_CLEAR ;
#else
/* Internal HOSC Enable (Setting after a Reset) */
#endif
TSB_CG->SYSCR = (SYSCR_GEAR_Val | CG_SYSCR_MCKSEL_SET); /* set <MCKSEL> */
while((TSB_CG->SYSCR & (CG_SYSCR_MCKSELGST_Val | CG_SYSCR_MCKSELPST_Val))
!= ((CG_SYSCR_MCKSELGST_Val | CG_SYSCR_MCKSELPST_Val))){
;
}
TSB_CG->WUPHCR = (WUPHCR_INIT_PLL | CG_WUPHCR_WUCLK_SET);
TSB_CG->PLL0SEL &= CG_PLL0SEL_PLL0SEL_CLEAR; /* PLL-->fOsc */
TSB_CG->PLL0SEL &= CG_PLL0SEL_PLL0ON_CLEAR;
TSB_CG->PLL0SEL = PLL0SEL_Ready;
TSB_CG->WUPHCR = (WUPHCR_INIT_PLL | CG_WUPHCR_WUCLK_SET | CG_WUPHCR_WUON_START_SET);
while (TSB_CG_WUPHCR_WUEF) {
;
} /* Warm-up */
TSB_CG->WUPHCR = (WUPHCR_LUPT_PLL | CG_WUPHCR_WUCLK_SET);
TSB_CG->PLL0SEL |= CG_PLL0SEL_PLL0ON_SET; /* PLL enabled */
TSB_CG->STBYCR = STBYCR_Val;
TSB_CG->WUPHCR = (WUPHCR_LUPT_PLL | CG_WUPHCR_WUCLK_SET | CG_WUPHCR_WUON_START_SET);
while (TSB_CG_WUPHCR_WUEF) {
;
} /* Lockup */
TSB_CG->PLL0SEL |= CG_PLL0SEL_PLL0SEL_SET;
while (!TSB_CG_PLL0SEL_PLL0ST) {
;
} /*Confirm CGPLL0SEL<PLL0ST> = "1" */
}
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