diff options
Diffstat (limited to 'os/hal/platforms/SPC56ELxx/hal_lld.c')
| -rw-r--r-- | os/hal/platforms/SPC56ELxx/hal_lld.c | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/os/hal/platforms/SPC56ELxx/hal_lld.c b/os/hal/platforms/SPC56ELxx/hal_lld.c deleted file mode 100644 index 6fec560bd..000000000 --- a/os/hal/platforms/SPC56ELxx/hal_lld.c +++ /dev/null @@ -1,330 +0,0 @@ -/*
- SPC5 HAL - Copyright (C) 2013 STMicroelectronics
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-
-/**
- * @file SPC56ELxx/hal_lld.c
- * @brief SPC56ELxx HAL subsystem low level driver source.
- *
- * @addtogroup HAL
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level HAL driver initialization.
- *
- * @notapi
- */
-void hal_lld_init(void) {
- uint32_t n;
-
- /* The system is switched to the RUN0 mode, the default for normal
- operations.*/
- if (halSPCSetRunMode(SPC5_RUNMODE_RUN0) == CH_FAILED) {
- SPC5_CLOCK_FAILURE_HOOK();
- }
-
- /* Decrementer timer initialized for system tick use, note, it is
- initialized here because in the OSAL layer the system clock frequency
- is not yet known.*/
- n = halSPCGetSystemClock() / CH_CFG_FREQUENCY;
- asm volatile ("mtspr 22, %[n] \t\n" /* Init. DEC register. */
- "mtspr 54, %[n] \t\n" /* Init. DECAR register.*/
- "lis %%r3, 0x0440 \t\n" /* DIE ARE bits. */
- "mtspr 340, %%r3" /* TCR register. */
- : : [n] "r" (n) : "r3");
-
- /* TB counter enabled for debug and measurements.*/
- asm volatile ("li %%r3, 0x4000 \t\n" /* TBEN bit. */
- "mtspr 1008, %%r3" /* HID0 register. */
- : : : "r3");
-
- /* INTC initialization, software vector mode, 4 bytes vectors, starting
- at priority 0.*/
- INTC.MCR.R = 0;
- INTC.CPR.R = 0;
- INTC.IACKR.R = (uint32_t)_vectors;
-
- /* EDMA initialization.*/
- edmaInit();
-}
-
-/**
- * @brief Returns the current value of the system free running counter.
- * @note This service is implemented by returning the content of the
- * DWT_CYCCNT register.
- *
- * @return The value of the system free running counter of
- * type halrtcnt_t.
- *
- * @notapi
- */
-halrtcnt_t hal_lld_get_counter_value(void) {
- halrtcnt_t cnt;
-
- asm volatile ("mfspr %0, 284" : "=r" (cnt));
- return cnt;
-}
-
-/**
- * @brief SPC56ELxx early initialization.
- * @note All the involved constants come from the file @p board.h and
- * @p hal_lld.h
- * @note This function must be invoked only after the system reset.
- *
- * @special
- */
-void spc_early_init(void) {
-
- /* Waiting for IRC stabilization before attempting anything else.*/
- while (!ME.GS.B.S_IRCOSC)
- ;
-
-#if !SPC5_NO_INIT
-
-#if SPC5_DISABLE_WATCHDOG
- /* SWT disabled.*/
- SWT.SR.R = 0xC520;
- SWT.SR.R = 0xD928;
- SWT.CR.R = 0xFF00000A;
-#endif
-
- /* Enabling peripheral bridges to allow any operation.*/
- AIPS.MPROT.R = 0x77777777;
- AIPS.PACR0_7.R = 0;
- AIPS.PACR8_15.R = 0;
- AIPS.PACR16_23.R = 0;
- AIPS.PACR24_31.R = 0;
- AIPS.OPACR0_7.R = 0;
- AIPS.OPACR8_15.R = 0;
- AIPS.OPACR16_23.R = 0;
- AIPS.OPACR24_31.R = 0;
- AIPS.OPACR32_39.R = 0;
- AIPS.OPACR40_47.R = 0;
- AIPS.OPACR48_55.R = 0;
- AIPS.OPACR56_63.R = 0;
- AIPS.OPACR64_71.R = 0;
- AIPS.OPACR72_79.R = 0;
- AIPS.OPACR80_87.R = 0;
- AIPS.OPACR88_95.R = 0;
-
- /* SSCM initialization. Setting up the most restrictive handling of
- invalid accesses to peripherals.*/
- SSCM.ERROR.R = 3; /* PAE and RAE bits. */
-
- /* FCCU CF errors clearing.*/
- FCCU.CFK.R = 0x618B7A50;
- FCCU.CFS[0].R = 0xFFFFFFFF;
- while (FCCU.CTRL.B.OPS != 3)
- ;
- FCCU.CFK.R = 0x618B7A50;
- FCCU.CFS[1].R = 0xFFFFFFFF;
- while (FCCU.CTRL.B.OPS != 3)
- ;
-
- /* FCCU NCF errors clearing.*/
- FCCU.NCFK.R = 0xAB3498FE;
- FCCU.NCFS[0].R = 0xFFFFFFFF;
- while (FCCU.CTRL.B.OPS != 3)
- ;
-
- /* RGM errors clearing.*/
- RGM.FES.R = 0xFFFF;
- RGM.DES.R = 0xFFFF;
-
- /* The system must be in DRUN mode on entry, if this is not the case then
- it is considered a serious anomaly.*/
- if (ME.GS.B.S_CURRENT_MODE != SPC5_RUNMODE_DRUN) {
- SPC5_CLOCK_FAILURE_HOOK();
- }
-
-#if defined(SPC5_OSC_BYPASS)
- /* If the board is equipped with an oscillator instead of a crystal then the
- bypass must be activated.*/
- CGM.OSC_CTL.B.OSCBYP = TRUE;
-#endif /* SPC5_OSC_BYPASS */
-
- /* Setting the various dividers and source selectors.*/
- CGM.SC_DC0.R = SPC5_CGM_SC_DC0;
- CGM.AC0_DC0_3.R = SPC5_CGM_AC0_DC0 | SPC5_CGM_AC0_DC1;
- CGM.AC0_SC.R = SPC5_AUX0CLK_SRC;
- CGM.AC1_DC0_3.R = SPC5_CGM_AC1_DC0;
- CGM.AC1_SC.R = SPC5_AUX1CLK_SRC;
- CGM.AC2_DC0_3.R = SPC5_CGM_AC2_DC0;
- CGM.AC2_SC.R = SPC5_AUX2CLK_SRC;
- CGM.AC3_SC.R = SPC5_FMPLL0_CLK_SRC;
- CGM.AC4_SC.R = SPC5_FMPLL1_CLK_SRC;
-
- /* Enables the XOSC in order to check its functionality before proceeding
- with the initialization.*/
- ME.DRUN.R = SPC5_ME_MC_SYSCLK_IRC | SPC5_ME_MC_IRCON | SPC5_ME_MC_XOSC0ON | \
- SPC5_ME_MC_FLAON_NORMAL | SPC5_ME_MC_MVRON;
- if (halSPCSetRunMode(SPC5_RUNMODE_DRUN) == CH_FAILED) {
- SPC5_CLOCK_FAILURE_HOOK();
- }
-
- /* Initialization of the FMPLLs settings.
- TODO: Add settings for the MR registers.*/
- CGM.FMPLL[0].CR.R = SPC5_FMPLL0_ODF |
- ((SPC5_FMPLL0_IDF_VALUE - 1) << 26) |
- (SPC5_FMPLL0_NDIV_VALUE << 16);
- CGM.FMPLL[0].MR.R = 0;
- CGM.FMPLL[1].CR.R = SPC5_FMPLL1_ODF |
- ((SPC5_FMPLL1_IDF_VALUE - 1) << 26) |
- (SPC5_FMPLL1_NDIV_VALUE << 16);
- CGM.FMPLL[1].MR.R = 0;
-
- /* Run modes initialization, note writes to the MC registers are verified
- by a protection mechanism, the operation success is verified at the
- end of the sequence.*/
- ME.IS.R = 8; /* Resetting I_ICONF status.*/
- ME.MER.R = SPC5_ME_ME_BITS; /* Enabled run modes. */
- ME.SAFE.R = SPC5_ME_SAFE_MC_BITS; /* SAFE run mode. */
- ME.DRUN.R = SPC5_ME_DRUN_MC_BITS; /* DRUN run mode. */
- ME.RUN[0].R = SPC5_ME_RUN0_MC_BITS; /* RUN0 run mode. */
- ME.RUN[1].R = SPC5_ME_RUN1_MC_BITS; /* RUN1 run mode. */
- ME.RUN[2].R = SPC5_ME_RUN2_MC_BITS; /* RUN2 run mode. */
- ME.RUN[3].R = SPC5_ME_RUN3_MC_BITS; /* RUN0 run mode. */
- ME.HALT0.R = SPC5_ME_HALT0_MC_BITS; /* HALT0 run mode. */
- ME.STOP0.R = SPC5_ME_STOP0_MC_BITS; /* STOP0 run mode. */
- if (ME.IS.B.I_ICONF) {
- /* Configuration rejected.*/
- SPC5_CLOCK_FAILURE_HOOK();
- }
-
- /* Peripherals run and low power modes initialization.*/
- ME.RUNPC[0].R = SPC5_ME_RUN_PC0_BITS;
- ME.RUNPC[1].R = SPC5_ME_RUN_PC1_BITS;
- ME.RUNPC[2].R = SPC5_ME_RUN_PC2_BITS;
- ME.RUNPC[3].R = SPC5_ME_RUN_PC3_BITS;
- ME.RUNPC[4].R = SPC5_ME_RUN_PC4_BITS;
- ME.RUNPC[5].R = SPC5_ME_RUN_PC5_BITS;
- ME.RUNPC[6].R = SPC5_ME_RUN_PC6_BITS;
- ME.RUNPC[7].R = SPC5_ME_RUN_PC7_BITS;
- ME.LPPC[0].R = SPC5_ME_LP_PC0_BITS;
- ME.LPPC[1].R = SPC5_ME_LP_PC1_BITS;
- ME.LPPC[2].R = SPC5_ME_LP_PC2_BITS;
- ME.LPPC[3].R = SPC5_ME_LP_PC3_BITS;
- ME.LPPC[4].R = SPC5_ME_LP_PC4_BITS;
- ME.LPPC[5].R = SPC5_ME_LP_PC5_BITS;
- ME.LPPC[6].R = SPC5_ME_LP_PC6_BITS;
- ME.LPPC[7].R = SPC5_ME_LP_PC7_BITS;
-
- /* CFLASH settings initialized for a maximum clock of 120MHz.*/
- CFLASH.PFCR0.B.B02_APC = 3;
- CFLASH.PFCR0.B.B02_WWSC = 3;
- CFLASH.PFCR0.B.B02_RWSC = 3;
-
- /* Switches again to DRUN mode (current mode) in order to update the
- settings.*/
- if (halSPCSetRunMode(SPC5_RUNMODE_DRUN) == CH_FAILED) {
- SPC5_CLOCK_FAILURE_HOOK();
- }
-
-#endif /* !SPC5_NO_INIT */
-}
-
-/**
- * @brief Switches the system to the specified run mode.
- *
- * @param[in] mode one of the possible run modes
- *
- * @return The operation status.
- * @retval CH_SUCCESS if the switch operation has been completed.
- * @retval CH_FAILED if the switch operation failed.
- */
-bool_t halSPCSetRunMode(spc5_runmode_t mode) {
-
- /* Clearing status register bits I_IMODE(4) and I_IMTC(1).*/
- ME.IS.R = 5;
-
- /* Starts a transition process.*/
- ME.MCTL.R = SPC5_ME_MCTL_MODE(mode) | SPC5_ME_MCTL_KEY;
- ME.MCTL.R = SPC5_ME_MCTL_MODE(mode) | SPC5_ME_MCTL_KEY_INV;
-
- /* Waits for the mode switch or an error condition.*/
- while (TRUE) {
- uint32_t r = ME.IS.R;
- if (r & 1)
- return CH_SUCCESS;
- if (r & 4)
- return CH_FAILED;
- }
-}
-
-/**
- * @brief Changes the clock mode of a peripheral.
- *
- * @param[in] n index of the @p PCTL register
- * @param[in] pctl new value for the @p PCTL register
- *
- * @notapi
- */
-void halSPCSetPeripheralClockMode(uint32_t n, uint32_t pctl) {
- uint32_t mode;
-
- ME.PCTL[n].R = pctl;
- mode = ME.MCTL.B.TARGET_MODE;
- ME.MCTL.R = SPC5_ME_MCTL_MODE(mode) | SPC5_ME_MCTL_KEY;
- ME.MCTL.R = SPC5_ME_MCTL_MODE(mode) | SPC5_ME_MCTL_KEY_INV;
-}
-
-#if !SPC5_NO_INIT || defined(__DOXYGEN__)
-/**
- * @brief Returns the system clock under the current run mode.
- *
- * @return The system clock in Hertz.
- */
-uint32_t halSPCGetSystemClock(void) {
- uint32_t sysclk;
-
- sysclk = ME.GS.B.S_SYSCLK;
- switch (sysclk) {
- case SPC5_ME_GS_SYSCLK_IRC:
- return SPC5_IRC_CLK;
- case SPC5_ME_GS_SYSCLK_XOSC:
- return SPC5_XOSC_CLK;
- case SPC5_ME_GS_SYSCLK_FMPLL0:
- return SPC5_FMPLL0_CLK;
- default:
- return 0;
- }
-}
-#endif /* !SPC5_NO_INIT */
-
-/** @} */
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