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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.org/license/LICENSE.
*/
#include <rtems.h>
#include <rtems/config.h>
#include <rtems/counter.h>
#include <libchip/ns16550.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>
#include <bsp/console-termios.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_local_disable(level);
(void) 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_local_disable(level);
(void) level;
printk("%s PANIC ERROR %u\n", rtems_get_version_string(), n);
while (1) {
/* Do nothing */
}
}
void bsp_start(void)
{
unsigned long i = 0;
/*
* 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...
*/
get_ppc_cpu_type();
get_ppc_cpu_revision();
/* Initialize some device driver parameters */
#ifdef HAS_UBOOT
BSP_bus_frequency = bsp_uboot_board_info.bi_busfreq
/ QORIQ_BUS_CLOCK_DIVIDER;
bsp_clicks_per_usec = BSP_bus_frequency / 8000000;
rtems_counter_initialize_converter(
#ifdef __PPC_CPU_E6500__
bsp_uboot_board_info.bi_intfreq
#else
BSP_bus_frequency / 8
#endif
);
#endif /* HAS_UBOOT */
/* Initialize some console parameters */
for (i = 0; i < console_device_count; ++i) {
const console_device *dev = &console_device_table[i];
const rtems_termios_device_handler *ns16550 =
#ifdef BSP_USE_UART_INTERRUPTS
&ns16550_handler_interrupt;
#else
&ns16550_handler_polled;
#endif
if (dev->handler == ns16550) {
ns16550_context *ctx = (ns16550_context *) dev->context;
ctx->clock = BSP_bus_frequency;
#ifdef HAS_UBOOT
#ifdef U_BOOT_GENERIC_BOARD_INFO
ctx->initial_baud = 115200;
#else
ctx->initial_baud = bsp_uboot_board_info.bi_baudrate;
#endif
#endif
}
}
/* Initialize exception handler */
ppc_exc_initialize_with_vector_base(
(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 */
#if QORIQ_CHIP_IS_T_VARIANT(QORIQ_CHIP_VARIANT)
qoriq.lcc.bstar &= ~LCC_BSTAR_EN;
#else
qoriq.lcc.bptr &= ~BPTR_EN;
#endif
}
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