diff options
Diffstat (limited to 'os/hal/platforms/AT91SAM7/hal_lld.c')
| -rw-r--r-- | os/hal/platforms/AT91SAM7/hal_lld.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/os/hal/platforms/AT91SAM7/hal_lld.c b/os/hal/platforms/AT91SAM7/hal_lld.c deleted file mode 100644 index 43659ed9c..000000000 --- a/os/hal/platforms/AT91SAM7/hal_lld.c +++ /dev/null @@ -1,129 +0,0 @@ -/*
- ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
-
- 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 AT91SAM7/hal_lld.c
- * @brief AT91SAM7 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. */
-/*===========================================================================*/
-
-static CH_IRQ_HANDLER(spurious_handler) {
-
- CH_IRQ_PROLOGUE();
-
- AT91SAM7_SPURIOUS_HANDLER_HOOK();
-
- AT91C_BASE_AIC->AIC_EOICR = 0;
-
- CH_IRQ_EPILOGUE();
-}
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level HAL driver initialization.
- *
- * @notapi
- */
-void hal_lld_init(void) {
- unsigned i;
-
- /* FIQ Handler weak symbol defined in vectors.s.*/
- void FiqHandler(void);
-
- /* Default AIC setup, the device drivers will modify it as needed.*/
- AT91C_BASE_AIC->AIC_ICCR = 0xFFFFFFFF;
- AT91C_BASE_AIC->AIC_IDCR = 0xFFFFFFFF;
- AT91C_BASE_AIC->AIC_SVR[0] = (AT91_REG)FiqHandler;
- for (i = 1; i < 31; i++) {
- AT91C_BASE_AIC->AIC_SVR[i] = (AT91_REG)NULL;
- AT91C_BASE_AIC->AIC_EOICR = (AT91_REG)i;
- }
- AT91C_BASE_AIC->AIC_SPU = (AT91_REG)spurious_handler;
-
-}
-
-/**
- * @brief AT91SAM7 clocks and PLL initialization.
- * @note All the involved constants come from the file @p board.h.
- * @note This function must be invoked only after the system reset.
- *
- * @special
- */
-void at91sam7_clock_init(void) {
-
- /* wait for reset */
- while((AT91C_BASE_RSTC->RSTC_RSR & (AT91C_RSTC_SRCMP | AT91C_RSTC_NRSTL)) != AT91C_RSTC_NRSTL)
- ;
- /* enable reset */
- AT91C_BASE_RSTC->RSTC_RMR = ((0xA5 << 24) | AT91C_RSTC_URSTEN);
-
- /* Flash Memory: 1 wait state, about 50 cycles in a microsecond.*/
-#if SAM7_PLATFORM == SAM7X512
- AT91C_BASE_MC->MC0_FMR = (AT91C_MC_FMCN & (50 << 16)) | AT91C_MC_FWS_1FWS;
- AT91C_BASE_MC->MC1_FMR = (AT91C_MC_FMCN & (50 << 16)) | AT91C_MC_FWS_1FWS;
-#else
- AT91C_BASE_MC->MC_FMR = (AT91C_MC_FMCN & (50 << 16)) | AT91C_MC_FWS_1FWS;
-#endif
-
- /* Enables the main oscillator and waits 56 slow cycles as startup time.*/
- AT91C_BASE_PMC->PMC_MOR = (AT91C_CKGR_OSCOUNT & (7 << 8)) | AT91C_CKGR_MOSCEN;
- while (!(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS))
- ;
-
- /* PLL setup: DIV = 14, MUL = 72, PLLCOUNT = 10
- PLLfreq = 96109714 Hz (rounded).*/
- AT91C_BASE_PMC->PMC_PLLR = (AT91C_CKGR_DIV & 14) |
- (AT91C_CKGR_PLLCOUNT & (10 << 8)) |
- (AT91SAM7_USBDIV) |
- (AT91C_CKGR_MUL & (72 << 16));
- while (!(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK))
- ;
-
- /* Master clock = PLLfreq / 2 = 48054858 Hz (rounded).*/
- AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
- while (!(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY))
- ;
-
- AT91C_BASE_PMC->PMC_MCKR |= AT91C_PMC_CSS_PLL_CLK;
- while (!(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY))
- ;
-}
-
-/** @} */
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