diff options
Diffstat (limited to 'c/src/lib/libbsp/bfin/bf537Stamp/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/bfin/bf537Stamp/startup/bspstart.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/c/src/lib/libbsp/bfin/bf537Stamp/startup/bspstart.c b/c/src/lib/libbsp/bfin/bf537Stamp/startup/bspstart.c deleted file mode 100644 index ffc2d950c7..0000000000 --- a/c/src/lib/libbsp/bfin/bf537Stamp/startup/bspstart.c +++ /dev/null @@ -1,229 +0,0 @@ -/* bspstart.c for bf537Stamp - * - * This routine does the bulk of the system initialisation. - */ - -/* - * Copyright (c) 2006 by Atos Automacao Industrial Ltda. - * written by Alain Schaefer <alain.schaefer@easc.ch> - * and Antonio Giovanini <antonio@atos.com.br> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - - -#include <bsp.h> -#include <bsp/bootcard.h> -#include <libcpu/bf537.h> -#include <libcpu/ebiuRegs.h> -#include <libcpu/gpioRegs.h> -#include <libcpu/mmu.h> -#include <libcpu/mmuRegs.h> -#include <libcpu/interrupt.h> -#include <rtems/sysinit.h> - -static bfin_mmu_config_t mmuRegions = { - /* instruction */ - { - {(void *) 0x00000000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x00400000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x00800000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x00c00000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x01000000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x01400000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x01800000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x01c00000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x02000000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x02400000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x02800000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x02c00000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x03000000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0x20000000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_CACHEABLE}, - {(void *) 0xff800000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_NOCACHE}, - {(void *) 0xffc00000, ICPLB_DATA_PAGE_SIZE_4MB | INSTR_NOCACHE} - }, - /* data */ - { - {(void *) 0x00000000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x00400000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x00800000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x00c00000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x01000000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x01400000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x01800000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x01c00000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x02000000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x02400000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x02800000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x02c00000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x03000000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0x20000000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_WRITEBACK}, - {(void *) 0xff800000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_NOCACHE}, - {(void *) 0xffc00000, DCPLB_DATA_PAGE_SIZE_4MB | DATA_NOCACHE} - } -}; - -static void initPLL(void); -static void initEBIU(void); -static void initGPIO(void); - -RTEMS_SYSINIT_ITEM( - bfin_interrupt_init, - RTEMS_SYSINIT_BSP_PRE_DRIVERS, - RTEMS_SYSINIT_ORDER_MIDDLE -); - -void bsp_start(void) -{ - /* BSP Hardware Initialization*/ - - *(uint32_t volatile *) DMEM_CONTROL |= DMEM_CONTROL_PORT_PREF0; - *(uint32_t volatile *) DMEM_CONTROL &= ~DMEM_CONTROL_PORT_PREF1; - bfin_mmu_init(&mmuRegions); - rtems_cache_enable_instruction(); - rtems_cache_enable_data(); - - Init_RTC(); /* Blackfin Real Time Clock initialization */ - - initPLL(); /* PLL initialization */ - initEBIU(); /* EBIU initialization */ - initGPIO(); /* GPIO initialization */ -} - - /* - * initPLL - * - * Routine to initialize the PLL. The BF537 Stamp uses a 27 Mhz XTAL. BISON - * See "../bf537Stamp/include/bsp.h" for more information. - */ - -static void initPLL(void) { - -#ifdef BISON - unsigned int n; - - /* Configure PLL registers */ - *((uint16_t*)PLL_LOCKCNT) = 0x1000; - *((uint16_t*)PLL_DIV) = PLL_CSEL|PLL_SSEL; - *((uint16_t*)PLL_CTL) = PLL_MSEL|PLL_DF; - - /* Commands to set PLL values */ - __asm__ ("cli r0;"); - __asm__ ("idle;"); - __asm__ ("sti r0;"); - - /* Delay for PLL stabilization */ - for (n=0; n<200; n++) {} -#endif - -} - - /* - * initEBIU - * - * Configure extern memory - */ - -static void initEBIU(void) { - - /* by default the processor has priority over dma channels for access to - external memory. this has been seen to result in dma unerruns on - ethernet transmit; it seems likely it could cause dma overruns on - ethernet receive as well. setting the following bit gives the dma - channels priority over the cpu, fixing that problem. unfortunately - we don't have finer grain control than that; all dma channels now - have priority over the cpu. */ - *(uint16_t volatile *) EBIU_AMGCTL |= EBIU_AMGCTL_CDPRIO; - -#ifdef BISON - /* Configure FLASH */ - *((uint32_t*)EBIU_AMBCTL0) = 0x7bb07bb0L; - *((uint32_t*)EBIU_AMBCTL1) = 0x7bb07bb0L; - *((uint16_t*)EBIU_AMGCTL) = 0x000f; - - /* Configure SDRAM - *((uint32_t*)EBIU_SDGCTL) = 0x0091998d; - *((uint16_t*)EBIU_SDBCTL) = 0x0013; - *((uint16_t*)EBIU_SDRRC) = 0x0817; - */ -#endif -} - - /* - * initGPIO - * - * Enable LEDs port - */ -static void initGPIO(void) { -#if (!BFIN_ON_SKYEYE) - *(uint16_t volatile *) PORT_MUX = 0; - - /* port f bits 0, 1: uart0 tx, rx */ - /* bits 2 - 5: buttons */ - /* bits 6 - 11: leds */ - *(uint16_t volatile *) PORTF_FER = 0x0003; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_INEN_OFFSET) = 0x003c; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_POLAR_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_EDGE_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_BOTH_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_MASKA_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_MASKB_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_DIR_OFFSET) = 0x0fc0; - - *(uint16_t volatile *) PORTG_FER = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_INEN_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_POLAR_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_EDGE_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_BOTH_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_MASKA_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_MASKB_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTGIO_BASE_ADDRESS + PORTIO_DIR_OFFSET) = 0x0000; - - /* port h bits 0 - 15: ethernet */ - *(uint16_t volatile *) PORTH_FER = 0xffff; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_INEN_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_POLAR_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_EDGE_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_BOTH_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_MASKA_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_MASKB_OFFSET) = 0x0000; - *(uint16_t volatile *) (PORTHIO_BASE_ADDRESS + PORTIO_DIR_OFFSET) = 0x0000; -#endif -} - -/* - * Helper Function to use the EzKits LEDS. - * Can be used by the Application. - */ -void setLEDs(uint8_t value) { - - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_CLEAR_OFFSET) = - (uint16_t) (~value & 0x3f) << 6; - *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_SET_OFFSET) = - (uint16_t) (value & 0x3f) << 6; -} - -/* - * Helper Function to use the EzKits LEDS - */ -uint8_t getLEDs(void) { - uint16_t r; - - r = *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_OFFSET); - return (uint8_t) ((r >> 6) & 0x3f); -} - -uint8_t getButtons(void) { - uint16_t r; - - r = *(uint16_t volatile *) (PORTFIO_BASE_ADDRESS + PORTIO_OFFSET); - - return (uint8_t) ((r >> 2) & 0x0f); -} - - |