h1x0/h300: bring the two bootloaders more in sync

The most major change here is the porting of the failsafe boot
menu and eeprom settings support from the h1x0 bootloader to the
h300 bootloader. This has been successfully tested already and
indeed works about the same as it does on the h1x0 bootloader.

The other major change is the addition of new code to both
bootloaders that will retry the flash boot function after
exitting disk mode. It still falls back to booting from disk
if this either fails or is not configured to boot from flash.

There were also various other modifications to bring the two
closer in sync so there are fewer differences.

Change-Id: I17a5724e03225b57e9d0071387294aa6cd025178

bootloader/iriver_h1x0.c

@@ -61,9 +61,7 @@
 extern int line;
 extern int remote_line;
 
-#ifdef HAVE_EEPROM_SETTINGS
 static bool recovery_mode = false;
-#endif
 
 /* Reset the cookie for the crt0 crash check */
 inline void __reset_cookie(void)
@@ -96,12 +94,12 @@ void start_firmware(void)
 void start_flashed_romimage(void)
 {
     uint8_t *src = (uint8_t *)FLASH_ROMIMAGE_ENTRY;
-    int *reset_vector;
+    uint32_t *reset_vector;
 
     if (!detect_flashed_romimage())
         return ;
 
-    reset_vector = (int *)(&src[sizeof(struct flash_header)+4]);
+    reset_vector = (uint32_t *)(&src[sizeof(struct flash_header)+sizeof(uint32_t)]);
 
     asm(" move.w #0x2700,%sr");
     __reset_cookie();
@@ -119,7 +117,7 @@ void start_flashed_romimage(void)
 void start_flashed_ramimage(void)
 {
     struct flash_header hdr;
-    unsigned char *buf = (unsigned char *)DRAM_START;
+    uint8_t *buf = (uint8_t *)DRAM_START;
     uint8_t *src = (uint8_t *)FLASH_RAMIMAGE_ENTRY;
 
     if (!detect_flashed_ramimage())
@@ -141,11 +139,9 @@ void start_flashed_ramimage(void)
 void shutdown(void)
 {
     printf("Shutting down...");
-#ifdef HAVE_EEPROM_SETTINGS
     /* Reset the rockbox crash check. */
     firmware_settings.bl_version = 0;
     eeprom_settings_store();
-#endif
 
     /* We need to gracefully spin down the disk to prevent clicks. */
     if (ide_powered())
@@ -185,7 +181,6 @@ void check_battery(void)
     }
 }
 
-#ifdef HAVE_EEPROM_SETTINGS
 void initialize_eeprom(void)
 {
     if (detect_original_firmware())
@@ -235,17 +230,17 @@ void try_flashboot(void)
     }
 }
 
-static const char *options[] = {
-    "Boot from disk",
-    "Boot RAM image",
-    "Boot ROM image",
-    "Shutdown"
-};
-
-#define FAILSAFE_OPTIONS 4
-#define TIMEOUT (15*HZ)
 void failsafe_menu(void)
 {
+    static const char *options[] =
+    {
+        "Boot from disk",
+        "Boot RAM image",
+        "Boot ROM image",
+        "Shutdown"
+    };
+    const int FAILSAFE_OPTIONS = sizeof(options) / sizeof(*options);
+    const long TIMEOUT = 15 * HZ;
     long start_tick = current_tick;
     int option = 3;
     int button;
@@ -355,7 +350,6 @@ void failsafe_menu(void)
 
     shutdown();
 }
-#endif
 
 /* get rid of a nasty humming sound during boot
  -> RESET signal */
@@ -427,9 +421,7 @@ void main(void)
     coldfire_set_pllcr_audio_bits(DEFAULT_PLLCR_AUDIO_BITS);
     enable_irq();
 
-#ifdef HAVE_EEPROM_SETTINGS
     initialize_eeprom();
-#endif
 
     usb_init();
     /* A small delay after usb_init is necessary to read the I/O port correctly
@@ -458,19 +450,11 @@ void main(void)
     }
 
     /* Power on the hard drive early, to speed up the loading. */
-    if (!hold_status
-# ifdef HAVE_EEPROM_SETTINGS
-        && !recovery_mode
-# endif
-        )
-    {
+    if (!hold_status && !recovery_mode)
         ide_power_enable(true);
-    }
 
-# ifdef HAVE_EEPROM_SETTINGS
     if (!hold_status && (usb_detect() != USB_INSERTED) && !recovery_mode)
         try_flashboot();
-# endif
 
     lcd_init();
 
@@ -500,11 +484,7 @@ void main(void)
 
     /* Don't start if the Hold button is active on the device you
        are starting with */
-    if ((usb_detect() != USB_INSERTED) && (hold_status
-#ifdef HAVE_EEPROM_SETTINGS
-                          || recovery_mode
-#endif
-                          ))
+    if ((usb_detect() != USB_INSERTED) && (hold_status || recovery_mode))
     {
         if (detect_original_firmware())
         {
@@ -512,9 +492,7 @@ void main(void)
             shutdown();
         }
 
-#ifdef HAVE_EEPROM_SETTINGS
         failsafe_menu();
-#endif
     }
 
     /* Holding REC while starting runs the original firmware */
@@ -537,13 +515,12 @@ void main(void)
         lcd_remote_puts(0, 3, msg);
         lcd_remote_update();
 
-#ifdef HAVE_EEPROM_SETTINGS
         if (firmware_settings.initialized)
         {
             firmware_settings.disk_clean = false;
             eeprom_settings_store();
         }
-#endif
+
         ide_power_enable(true);
         storage_enable(false);
         sleep(HZ/20);
@@ -570,6 +547,11 @@ void main(void)
         lcd_update();
     }
 
+    /* boot from flash if that is the default */
+    try_flashboot();
+    if (recovery_mode)
+        printf("Falling back to boot from disk");
+
     rc = storage_init();
     if(rc)
     {
@@ -580,7 +562,6 @@ void main(void)
         while(!(button_get(true) & BUTTON_REL));
     }
 
-
     filesystem_init();
 
     rc = disk_mount_all();