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Boot loader: correct handling of CPU frequency setting, better button handling, USB mode handling

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6492 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2005-05-20 18:16:45 +00:00
parent 3beafe4c44
commit 8e958b540b
1 changed files with 75 additions and 8 deletions
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83
bootloader/main.c
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@ -42,6 +42,32 @@ int usb_screen(void)
return 0;
}
static void usb_enable(bool on)
{
GPIO_OUT &= ~0x01000000; /* GPIO24 is the Cypress chip power */
GPIO_ENABLE |= 0x01000000;
GPIO_FUNCTION |= 0x01000000;
GPIO1_FUNCTION |= 0x00000080; /* GPIO39 is the USB detect input */
if(on)
{
/* Power on the Cypress chip */
GPIO_OUT |= 0x01000000;
sleep(2);
}
else
{
/* Power off the Cypress chip */
GPIO_OUT &= ~0x01000000;
}
}
bool usb_detect(void)
{
return (GPIO1_READ & 0x80)?true:false;
}
void start_iriver_fw(void)
{
asm(" move.w #0x2700,%sr");
@ -127,10 +153,32 @@ void main(void)
int i;
int rc;
char buf[256];
bool rc_on_button = false;
bool on_button = false;
int data;
/* Read the buttons early */
/* Set GPIO33, GPIO37, GPIO38 and GPIO52 as general purpose inputs */
GPIO1_FUNCTION |= 0x00100062;
GPIO1_ENABLE &= ~0x00100062;
data = GPIO1_READ;
if ((data & 0x20) == 0)
on_button = true;
if ((data & 0x40) == 0)
rc_on_button = true;
power_init();
system_init();
kernel_init();
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
/* Set up waitstates for the peripherals */
set_cpu_frequency(0); /* PLL off */
#endif
backlight_init();
set_irq_level(0);
lcd_init();
@ -140,19 +188,21 @@ void main(void)
lcd_setfont(FONT_SYSFIXED);
snprintf(buf, 256, "Rockboot version 1");
lcd_puts(0, line++, buf);
sleep(HZ/50); /* Allow the button driver to check the buttons */
if(button_status() & BUTTON_REC ||
(button_status() & BUTTON_RC_ON) == BUTTON_RC_ON) {
if(button_status() & BUTTON_REC || rc_on_button) {
lcd_puts(0, 8, "Starting original firmware...");
lcd_update();
start_iriver_fw();
}
if((button_status() & BUTTON_ON) & button_hold()) {
if(on_button & button_hold()) {
lcd_puts(0, 8, "HOLD switch on, power off...");
lcd_update();
sleep(HZ/2);
sleep(HZ*2);
/* Reset the cookie for the crt0 crash check */
asm(" move.l #0,%d0");
asm(" move.l %d0,0x10017ffc");
@ -166,7 +216,7 @@ void main(void)
power_off();
}
#endif
rc = ata_init();
if(rc)
{
@ -175,21 +225,38 @@ void main(void)
lcd_clear_display();
snprintf(str, 31, "ATA error: %d", rc);
lcd_puts(0, 1, str);
lcd_puts(0, 3, "Press ON to debug");
lcd_update();
while(!(button_get(true) & BUTTON_REL));
#endif
panicf("ata: %d", rc);
}
/* A hack to enter USB mode without using the USB thread */
if(usb_detect())
{
lcd_clear_display();
lcd_puts(0, 7, " Bootloader USB mode");
lcd_update();
ata_spin();
ata_enable(false);
usb_enable(true);
while(usb_detect())
{
ata_spin(); /* Prevent the drive from spinning down */
sleep(HZ);
}
system_reboot();
}
disk_init();
rc = disk_mount_all();
if (rc<=0)
{
lcd_clear_display();
lcd_puts(0, 0, "No partition");
lcd_puts(0, 1, "found.");
lcd_puts(0, 0, "No partition found");
while(button_get(true) != SYS_USB_CONNECTED) {};
}