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/**
* @file
*
* @ingroup QorIQ
*
* @brief BSP startup.
*/
/*
* Copyright (c) 2010-2012 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#include <rtems.h>
#include <rtems/config.h>
#include <libchip/serial.h>
#include <libcpu/powerpc-utility.h>
#include <bsp.h>
#include <bsp/vectors.h>
#include <bsp/bootcard.h>
#include <bsp/irq-generic.h>
#include <bsp/u-boot.h>
#include <bsp/linker-symbols.h>
#include <bsp/mmu.h>
#include <bsp/qoriq.h>
LINKER_SYMBOL(bsp_exc_vector_base);
/* Configuration parameters for console driver, ... */
unsigned int BSP_bus_frequency;
/* Configuration parameter for clock driver, ... */
uint32_t bsp_clicks_per_usec;
void BSP_panic(char *s)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
printk("%s PANIC %s\n", rtems_get_version_string(), s);
while (1) {
/* Do nothing */
}
}
void _BSP_Fatal_error(unsigned n)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
printk("%s PANIC ERROR %u\n", rtems_get_version_string(), n);
while (1) {
/* Do nothing */
}
}
void bsp_start(void)
{
unsigned long i = 0;
ppc_cpu_id_t myCpu;
ppc_cpu_revision_t myCpuRevision;
/*
* Get CPU identification dynamically. Note that the get_ppc_cpu_type() function
* store the result in global variables so that it can be used latter...
*/
myCpu = get_ppc_cpu_type();
myCpuRevision = get_ppc_cpu_revision();
/* Initialize some device driver parameters */
#ifdef HAS_UBOOT
BSP_bus_frequency = bsp_uboot_board_info.bi_busfreq;
bsp_clicks_per_usec = bsp_uboot_board_info.bi_busfreq / 8000000;
#endif /* HAS_UBOOT */
/* Initialize some console parameters */
for (i = 0; i < Console_Configuration_Count; ++i) {
console_tbl *ct = &Console_Configuration_Ports[i];
ct->ulClock = BSP_bus_frequency;
#ifdef HAS_UBOOT
if (ct->deviceType == SERIAL_NS16550) {
ct->pDeviceParams = (void *) bsp_uboot_board_info.bi_baudrate;
}
#endif
}
/* Disable decrementer */
PPC_CLEAR_SPECIAL_PURPOSE_REGISTER_BITS(BOOKE_TCR, BOOKE_TCR_DIE);
/* Initialize exception handler */
ppc_exc_initialize_with_vector_base(
PPC_INTERRUPT_DISABLE_MASK_DEFAULT,
(uintptr_t) bsp_section_work_begin,
rtems_configuration_get_interrupt_stack_size(),
bsp_exc_vector_base
);
/* Now it is possible to make the code execute only */
qoriq_mmu_change_perm(
FSL_EIS_MAS3_SR | FSL_EIS_MAS3_SX,
FSL_EIS_MAS3_SX,
FSL_EIS_MAS3_SR
);
/* Initalize interrupt support */
bsp_interrupt_initialize();
/* Disable boot page translation */
qoriq.lcc.bptr &= ~BPTR_EN;
}
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