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/*
* RTEMS for Nintendo DS platform initialization.
*
* Copyright (c) 2008 by Matthieu Bucchianeri <mbucchia@gmail.com>
*
* 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
*
* $Id$
*/
#include <bsp.h>
#include <bsp/bootcard.h>
#include <nds.h>
/*
* This definition comes from ARM cpu code.
*/
extern unsigned int arm_cpu_mode;
/*
* start the platform.
*/
void bsp_start (void)
{
/* initialize irq management */
BSP_rtems_irq_mngt_init ();
/* setup console mode for lower screen */
irqEnable (IRQ_VBLANK);
videoSetMode (0);
videoSetModeSub (MODE_0_2D | DISPLAY_BG0_ACTIVE);
vramSetBankC (VRAM_C_SUB_BG);
SUB_BG0_CR = BG_MAP_BASE (31);
BG_PALETTE_SUB[255] = RGB15 (31, 31, 31);
consoleInitDefault ((u16 *) SCREEN_BASE_BLOCK_SUB (31),
(u16 *) CHAR_BASE_BLOCK_SUB (0), 16);
/* print status message */
printk ("[+] kernel console started\n");
/* set the cpu mode to system user */
arm_cpu_mode = 0x1f;
/* configure clock period */
Configuration.microseconds_per_tick = 10000; /* us */
}
/*
* reset bss area.
*/
void
bss_reset (void)
{
extern uint8_t __bss_start;
extern uint8_t __bss_end;
memset (&__bss_start, 0, (uint32_t) & __bss_end - (uint32_t) & __bss_start);
}
/*
* A few symbols needed by libnds but not used.
*/
#include "../include/sys/iosupport.h"
const devoptab_t *devoptab_list[STD_MAX];
void *punixTime;
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