iRiver Boot loader

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5694 a1c6a512-1295-4272-9138-f99709370657
2005-01-28 12:51:10 +00:00 · 2005-01-28 12:51:10 +00:00 · d397145554
commit d397145554
parent 2b8c52d98c
3 changed files with 312 additions and 0 deletions
--- a/bootloader/main.c
+++ b/bootloader/main.c
@ -0,0 +1,233 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 by Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "cpu.h"
+#include "system.h"
+#include "lcd.h"
+#include "kernel.h"
+#include "thread.h"
+#include "ata.h"
+#include "disk.h"
+#include "font.h"
+#include "adc.h"
+#include "backlight.h"
+#include "button.h"
+#include "panic.h"
+#include "power.h"
+#include "file.h"
+
+int line = 0;
+
+int usb_screen(void)
+{
+   return 0;
+}
+
+void start_iriver_fw(void)
+{
+    asm(" move.w #0x2700,%sr");
+    asm(" move.l #0,%d0");
+    asm(" movec.l %d0,%vbr");
+    asm(" move.l 0,%sp");
+    asm(" lea.l 8,%a0");
+    asm(" jmp (%a0)");
+}
+
+int load_firmware(void)
+{
+    int fd;
+    int rc;
+    int len;
+    unsigned long chksum;
+    unsigned long sum;
+    int i;
+    unsigned char *buf = (unsigned char *)0x30000000;
+    char str[80];
+    
+    fd = open("/rockbox.bin", O_RDONLY);
+    if(fd < 0)
+        return -1;
+
+    len = lseek(fd, 0, SEEK_END) - 8;
+
+    snprintf(str, 80, "Length: %x", len);
+    lcd_puts(0, line++, str);
+    lcd_update();
+
+    lseek(fd, 0, SEEK_SET);
+    
+    rc = read(fd, &chksum, 4);
+    if(rc < 4)
+        return -2;
+
+    snprintf(str, 80, "Checksum: %x", chksum);
+    lcd_puts(0, line++, str);
+    lcd_update();
+
+    lseek(fd, 4, SEEK_CUR);
+
+    rc = read(fd, buf, len);
+    if(rc < len)
+        return -4;
+
+    close(fd);
+
+    sum = 0;
+    
+    for(i = 0;i < len;i++) {
+        sum += buf[i];
+    }
+
+    snprintf(str, 80, "Sum: %x", sum);
+    lcd_puts(0, line++, str);
+    lcd_update();
+
+    if(sum != chksum)
+        return -5;
+
+    return 0;
+}
+
+void start_firmware(void)
+{
+    asm(" move.w #0x2700,%sr");
+    asm(" move.l #0x30000000,%d0");
+    asm(" movec.l %d0,%vbr");
+    asm(" move.l 0x30000000,%sp");
+    asm(" move.l 0x30000004,%a0");
+    asm(" jmp (%a0)");
+}
+
+int main(void)
+{
+    int i;
+    int rc;
+    int button;
+    char buf[256];
+
+    power_init();
+    system_init();
+    kernel_init();
+    backlight_init();
+    set_irq_level(0);
+    lcd_init();
+    font_init();
+    adc_init();
+    button_init();
+
+    lcd_setfont(FONT_SYSFIXED);
+
+    sleep(HZ/10); /* Allow the button driver to check the buttons */
+
+    if(button_status() & BUTTON_REC) {
+        lcd_puts(0, 8, "Ninjax");
+        lcd_update();
+        sleep(HZ);
+        start_iriver_fw();
+    }
+
+    GPIO_FUNCTION |= 0x40000040;
+    GPIO1_FUNCTION |= 0x00000062;
+
+    GPIO1_ENABLE |= 0x00000000;
+
+    IDECONFIG1 = 0x00107000;
+    IDECONFIG2 = 0x00040000;
+
+    /* Hard drive power */
+    GPIO_OUT &= ~0x00000040;
+    GPIO_ENABLE |= 0x00040240;
+    GPIO_FUNCTION |= 0x00040200;
+
+    rc = ata_init();
+    if(rc)
+    {
+#ifdef HAVE_LCD_BITMAP
+        char str[32];
+        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);
+    }
+
+    disk_init();
+
+    /* FixMe: the same kind of mounting happens in usb.c, share the code. */
+    rc = disk_mount_all();
+    if (rc<=0)
+    {
+        lcd_clear_display();
+        lcd_puts(0, 0, "No partition");
+        lcd_puts(0, 1, "found.");
+        while(button_get(true) != SYS_USB_CONNECTED) {};
+    }
+
+    lcd_puts(0, line++, "Loading firmware");
+    i = load_firmware();
+    snprintf(buf, 256, "Result: %d", i);
+    lcd_puts(0, line++, buf);
+    lcd_update();
+
+    if(i == 0)
+        start_firmware();
+    
+    while(1) {
+        button = button_get_w_tmo(HZ/2);
+        if(button)
+        {
+            if(button == (BUTTON_OFF | BUTTON_REPEAT))
+                power_off();
+        }
+    }
+}
+
+/* These functions are present in the firmware library, but we reimplement
+   them here because the originals do a lot more than we want */
+
+void reset_poweroff_timer(void)
+{
+}
+
+void screen_dump(void)
+{
+}
+
+int dbg_ports(void)
+{
+   return 0;
+}
+
+void mpeg_stop(void)
+{
+}
+
+void usb_acknowledge(void)
+{
+}
+
+void usb_wait_for_disconnect(void)
+{
+}