void Reset_Handler()
{
// Copy the data segment initializers from flash to SRAM.
uint32_t *src=_sidata;
for(uint32_t *dest=_sdata;dest<_edata;dest++) *dest=*src++;
// Zero fill the bss segment.
for(uint32_t *dest=_sbss;dest<_ebss;dest++) *dest=0;
#ifdef CCM_MEMORY
// Zero fill the CCM segment also. this is used by kernels to check if they're initialized (bad)
for(uint32_t *dest=_sccm;dest<_eccm;dest++) *dest=0;
#endif
// misc initializations
system_init(); // in board.c
board_init();
// USB first since it can be lengthy and should not be interrupted
#ifndef NO_USB
setup_usb();
#endif
#ifndef NO_AUDIO
audio_init();
#endif
#if VGA_MODE!=NONE
// be careful to initialize everything before (line callbacks ..)
vga_setup();
#endif
// Call the application's entry point.
main();
// If main ever exits, lock up.
for(;;);
}
// Main setup code.
static void
maininit(void)
{
// Setup romfile items.
qemu_cfg_romfile_setup();
coreboot_cbfs_setup();
// Setup ivt/bda/ebda
init_ivt();
init_bda();
// Init base pc hardware.
pic_setup();
timer_setup();
mathcp_setup();
// Initialize pci
pci_setup();
smm_init();
// Initialize mtrr
mtrr_setup();
// Setup Xen hypercalls
xen_init_hypercalls();
// Initialize internal tables
boot_setup();
// Start hardware initialization (if optionrom threading)
if (CONFIG_THREADS && CONFIG_THREAD_OPTIONROMS)
init_hw();
// Find and initialize other cpus
smp_probe();
// Setup interfaces that option roms may need
bios32_setup();
pmm_setup();
pnp_setup();
kbd_setup();
mouse_setup();
init_bios_tables();
// Run vga option rom
vga_setup();
// Do hardware initialization (if running synchronously)
if (!CONFIG_THREADS || !CONFIG_THREAD_OPTIONROMS) {
init_hw();
wait_threads();
}
// Run option roms
optionrom_setup();
// Run BCVs and show optional boot menu
boot_prep();
// Finalize data structures before boot
cdemu_setup();
pmm_finalize();
malloc_finalize();
memmap_finalize();
// Setup bios checksum.
BiosChecksum -= checksum((u8*)BUILD_BIOS_ADDR, BUILD_BIOS_SIZE);
// Write protect bios memory.
make_bios_readonly();
// Invoke int 19 to start boot process.
startBoot();
}
int main(void) {
system_cm3_setup();
log_setup();
queue_setup();
init_usart1 ( 38400 ); // initialize USART1 @ 9600 baud
init_usart2 ( 38400 );
//USART_puts ( USART1, "Init usart1 complete! Hello World!\r\n" );
USART_puts ( USART2, "Init usart2 complete! Hello World!\r\n" );
fb_setup();
#ifdef VGA_DMA
vga_setup ( VGA_USE_DMA );
#else
vga_setup ( VGA_NO_DMA );
#endif
fb_test_pattern ( fb_active, fbt_offset_squares );
//fb_test_pattern ( fb_active, fbt_vlines );
//fb_test_pattern ( fb_active, fbt_v1lines );
//fb_test_pattern ( fb_active, fbt_onoff1 );
while ( 1 ) {
// weeeeee!
// any work for us to do?
#if 1
if ( vblank ) {
if ( queueready() ) {
command_queue_run();
}
}
#endif
// update framebuffers
#if 0
if ( vblank ) {
unsigned char i = 0;
fb_clone ( fb_2, fb_active );
while ( vblank ) {
__asm__("nop");
}
fb_test_pattern ( fb_2, i & 0x03 );
i++;
}
#endif
// handle queued logs
#if 1
if ( logready() ) {
char *log;
while ( ( log = logpull() ) ) {
USART_puts ( USART2, log );
}
}
#endif
__asm__("nop");
}
} // main
int main(void) {
system_cm3_setup();
log_setup();
queue_setup();
init_usart1 ( 38400 ); // initialize USART1 @ 9600 baud
init_usart2 ( 38400 );
//USART_puts ( USART1, "Init usart1 complete! Hello World!\r\n" );
USART_puts ( USART2, "Init usart2 complete! Hello World!\r\n" );
fb_setup();
#ifdef VGA_DMA
vga_setup ( VGA_USE_DMA );
#else
vga_setup ( VGA_NO_DMA );
#endif
#ifdef BUS_FRAMEBUFFER
bus_setup();
#endif
//fb_test_pattern ( fb_active, fbt_topbottom );
fb_test_pattern ( fb_active, fbt_offset_squares );
//fb_test_pattern ( fb_active, fbt_vlines );
//fb_test_pattern ( fb_active, fbt_v1lines );
//fb_test_pattern ( fb_active, fbt_onoff1 );
//fb_test_pattern ( fb_active, fbt_spriteram );
while ( 1 ) {
// weeeeee!
// any work for us to do?
#ifdef RUNMODE_COMMAND_SERIAL
if ( vblank ) {
if ( queueready() ) {
command_queue_run();
}
}
#endif
#ifdef RUNMODE_FRAMEBUFFER_FOREVER
if ( vblank ) {
queueit ( "BD" );
command_queue_run();
}
#endif
// update framebuffers
#if 0
if ( vblank ) {
unsigned char i = 0;
fb_clone ( fb_2, fb_active );
while ( vblank ) {
__asm__("nop");
}
fb_test_pattern ( fb_2, i & 0x03 );
i++;
}
#endif
// check for external RAM updates?
#ifdef zzBUS_FRAMEBUFFER
static uint16_t _done = 0;
_done++;
if ( vblank && _done > 30 && _done < 40 ) {
bus_grab_and_wait();
uint32_t addr = 0x1C0000;
uint8_t v;
uint8_t i;
char b [ 2 ];
USART_puts_optional ( USART2, "+REM cart dump: " );
for ( i = 0; i < 20; i++ ) {
v = bus_perform_read ( addr );
b [ 0 ] = v;
b [ 1 ] = '\0';
USART_puts_optional ( USART2, b );
addr++;
}
USART_puts_optional ( USART2, "+++\n" );
bus_release();
}
#endif
// handle queued logs
#if 0
if ( logready() ) {
char *log;
while ( ( log = logpull() ) ) {
USART_puts ( USART2, log );
}
}
#endif
__asm__("nop");
}
} // main