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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* This file contains the bsp_start() method and support.
*/
/*
* COPYRIGHT (c) 1989-2012.
* On-Line Applications Research Corporation (OAR).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <bsp.h>
#include <libcpu/isr_entries.h>
#include <bsp/bootcard.h>
#include <rtems/pci.h>
#include <bsp/irq-generic.h>
#include <bsp/i8259.h>
/*
* STRUCTURES
*/
/* Structure filled in by get_mem_info. Only the size field is
* actually used (to clear bss), so the others aren't even filled in.
*/
struct s_mem
{
unsigned int size;
unsigned int icsize;
unsigned int dcsize;
};
/*
* GLOBALS
*/
uint32_t bsp_clicks_per_microsecond;
/*
* PROTOTYPES
*/
void clear_cache( void *address, size_t n );
void get_mem_info( struct s_mem *mem );
/*
* EXTERNs
*/
extern int RamSize;
/*
* bsp_start
*
* This routine does the bulk of the system initialization.
*/
void bsp_start( void )
{
/* uint32_t board_ID = 0x420; */
static int j = 1;
int pci_init_retval;
/*
* Note: This is the value that works for qemu, and it was
* unable to be validated on the actual hardware.
*/
mips_set_sr( 0x04100000 );
bsp_interrupt_initialize();
/*
* XXX need to figure out a real value. :)
* This works for the qemu simulation, but timeing may
* be off for the actual hardware.
*/
bsp_clicks_per_microsecond = 100;
#if 1
while ( j != 1 ) {
int i;
printk (".");
for (i=0; i<1000; i++);
}
#endif
/*
* init PCI Bios interface...
*/
pci_init_retval = pci_initialize();
if (pci_init_retval != PCIB_ERR_SUCCESS) {
printk("PCI bus: could not initialize PCI BIOS interface\n");
}
BSP_i8259s_init();
}
/*
* Required routine by some gcc run-times.
*/
void clear_cache( void *address, size_t n )
{
}
void get_mem_info(
struct s_mem *mem
)
{
mem->size = (int) (&RamSize); /* Normally 128 or 256 MB */
}
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