diff options
Diffstat (limited to 'bsps/bfin/eZKit533/start/bspstart.c')
| -rw-r--r-- | bsps/bfin/eZKit533/start/bspstart.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/bsps/bfin/eZKit533/start/bspstart.c b/bsps/bfin/eZKit533/start/bspstart.c new file mode 100644 index 0000000000..3579dd7766 --- /dev/null +++ b/bsps/bfin/eZKit533/start/bspstart.c @@ -0,0 +1,156 @@ +/* bspstart.c for eZKit533 + * + * 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 <cplb.h> +#include <libcpu/interrupt.h> +#include <rtems/sysinit.h> + +const unsigned int dcplbs_table[16][2] = { + { 0xFFA00000, (PAGE_SIZE_1MB | CPLB_D_PAGE_MGMT | CPLB_WT) }, + { 0xFF900000, (PAGE_SIZE_1MB | CPLB_D_PAGE_MGMT | CPLB_WT) }, /* L1 Data B */ + { 0xFF800000, (PAGE_SIZE_1MB | CPLB_D_PAGE_MGMT | CPLB_WT) }, /* L1 Data A */ + { 0xFFB00000, (PAGE_SIZE_1MB | CPLB_DNOCACHE) }, + { 0x20300000, (PAGE_SIZE_1MB | CPLB_DNOCACHE) }, /* Async Memory Bank 3 */ + { 0x20200000, (PAGE_SIZE_1MB | CPLB_DNOCACHE) }, /* Async Memory Bank 2 (Secnd) */ + { 0x20100000, (PAGE_SIZE_1MB | CPLB_DNOCACHE) }, /* Async Memory Bank 1 (Prim B) */ + { 0x20000000, (PAGE_SIZE_1MB | CPLB_DNOCACHE) }, /* Async Memory Bank 0 (Prim A) */ + + { 0x02400000, (PAGE_SIZE_4MB | CPLB_DNOCACHE) }, + { 0x02000000, (PAGE_SIZE_4MB | CPLB_DNOCACHE) }, + { 0x00C00000, (PAGE_SIZE_4MB | CPLB_DNOCACHE) }, + { 0x00800000, (PAGE_SIZE_4MB | CPLB_DNOCACHE) }, + { 0x00400000, (PAGE_SIZE_4MB | CPLB_DNOCACHE) }, + { 0x00000000, (PAGE_SIZE_4MB | CPLB_DNOCACHE) }, + { 0xffffffff, 0xffffffff } /* end of section - termination */ + +}; + + +const unsigned int _icplbs_table[16][2] = { + { 0xFFA00000, (PAGE_SIZE_1MB | CPLB_I_PAGE_MGMT | CPLB_I_PAGE_MGMT | 0x4) }, /* L1 Code */ + { 0xEF000000, (PAGE_SIZE_1MB | CPLB_INOCACHE) }, /* AREA DE BOOT */ + { 0xFFB00000, (PAGE_SIZE_1MB | CPLB_INOCACHE) }, + { 0x20300000, (PAGE_SIZE_1MB | CPLB_INOCACHE) }, /* Async Memory Bank 3 */ + { 0x20200000, (PAGE_SIZE_1MB | CPLB_INOCACHE) }, /* Async Memory Bank 2 (Secnd) */ + { 0x20100000, (PAGE_SIZE_1MB | CPLB_INOCACHE) }, /* Async Memory Bank 1 (Prim B) */ + { 0x20000000, (PAGE_SIZE_1MB | CPLB_INOCACHE) }, /* Async Memory Bank 0 (Prim A) */ + + { 0x02400000, (PAGE_SIZE_4MB | CPLB_INOCACHE) }, + { 0x02000000, (PAGE_SIZE_4MB | CPLB_INOCACHE) }, + { 0x00C00000, (PAGE_SIZE_4MB | CPLB_INOCACHE) }, + { 0x00800000, (PAGE_SIZE_4MB | CPLB_INOCACHE) }, + { 0x00400000, (PAGE_SIZE_4MB | CPLB_INOCACHE) }, + { 0x00000000, (PAGE_SIZE_4MB | CPLB_INOCACHE) }, + { 0xffffffff, 0xffffffff } /* end of section - termination */ + +}; + +/* + * Init_PLL + * + * Routine to initialize the PLL. The Ezkit uses a 27 Mhz XTAL. + * See "../eZKit533/include/bsp.h" for more information. + */ +static void Init_PLL (void) +{ + 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++) {} +} + +/* + * Init_EBIU + * + * Configure extern memory + */ +static void Init_EBIU (void) +{ + /* 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; + */ +} + +/* + * Init_Flags + * + * Enable LEDs port + */ +static void Init_Flags(void) +{ + *((uint16_t*)FIO_INEN) = 0x0100; + *((uint16_t*)FIO_DIR) = 0x0000; + *((uint16_t*)FIO_EDGE) = 0x0100; + *((uint16_t*)FIO_MASKA_D) = 0x0100; + + *((uint8_t*)FlashA_PortB_Dir) = 0x3f; + *((uint8_t*)FlashA_PortB_Data) = 0x00; +} + +RTEMS_SYSINIT_ITEM( + bfin_interrupt_init, + RTEMS_SYSINIT_BSP_PRE_DRIVERS, + RTEMS_SYSINIT_ORDER_MIDDLE +); + +void bsp_start( void ) +{ + /* BSP Hardware Initialization*/ + Init_RTC(); /* Blackfin Real Time Clock initialization */ + Init_PLL(); /* PLL initialization */ + Init_EBIU(); /* EBIU initialization */ + Init_Flags(); /* GPIO initialization */ + + int i=0; + for (i=5;i<16;i++) { + set_vector((rtems_isr_entry)bfin_null_isr, i, 1); + } +} + +/* + * Helper Function to use the EzKits LEDS. + * Can be used by the Application. + */ +void setLED (uint8_t value) +{ + *((uint8_t*)FlashA_PortB_Data) = value; +} + +/* + * Helper Function to use the EzKits LEDS + */ +uint8_t getLED (void) +{ + return *((uint8_t*)FlashA_PortB_Data); +} |