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/* 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>
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;
}
/*
* BSP predriver hook. Called just before drivers are initialized.
* Used to setup libc and install any BSP extensions.
*/
void bsp_predriver_hook(void)
{
bfin_interrupt_init();
}
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);
}
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