From 3b52bb9c68665c6860c7da6f8ee0b3d8fe26d53d Mon Sep 17 00:00:00 2001
From: Miika Pekkarinen <miipekk@ihme.org>
Date: Fri, 11 Aug 2006 10:13:16 +0000
Subject: [PATCH] Properly handle early USB mode, dircache and tagcache state
 files with flashed rockbox.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10525 a1c6a512-1295-4272-9138-f99709370657
---
 apps/main.c                | 14 +++++++++-----
 apps/tagcache.c            |  2 +-
 apps/tree.c                | 10 ++++++----
 firmware/eeprom_settings.c | 18 +++++++++++-------
 firmware/system.c          | 10 ++++++++++
 5 files changed, 37 insertions(+), 17 deletions(-)

diff --git a/apps/main.c b/apps/main.c
index d590790a85..a3fe8ef64f 100644
--- a/apps/main.c
+++ b/apps/main.c
@@ -338,9 +338,17 @@ void init(void)
         panicf("ata: %d", rc);
     }
 
+#ifdef HAVE_EEPROM
+    eeprom_settings_init();
+#endif
+    
     usb_start_monitoring();
     while (usb_detect())
-    {   /* enter USB mode early, before trying to mount */
+    {   
+#ifdef HAVE_EEPROM
+        firmware_settings.disk_clean = false;
+#endif
+        /* enter USB mode early, before trying to mount */
         if (button_get_w_tmo(HZ/10) == SYS_USB_CONNECTED)
 #ifdef HAVE_MMC
             if (!mmc_touched() || (mmc_remove_request() == SYS_MMC_EXTRACTED))
@@ -374,10 +382,6 @@ void init(void)
         }
     }
 
-#ifdef HAVE_EEPROM
-    eeprom_settings_init();
-#endif
-    
     settings_calc_config_sector();
     
 #if defined(SETTINGS_RESET) || (CONFIG_KEYPAD == IPOD_4G_PAD)
diff --git a/apps/tagcache.c b/apps/tagcache.c
index 4bcf25bad2..ec713e29a4 100644
--- a/apps/tagcache.c
+++ b/apps/tagcache.c
@@ -3300,7 +3300,7 @@ void tagcache_unload_ramcache(void)
 {
     stat.ramcache = false;
     /* Just to make sure there is no statefile present. */
-    remove(TAGCACHE_STATEFILE);
+    // remove(TAGCACHE_STATEFILE);
 }
 #endif
 
diff --git a/apps/tree.c b/apps/tree.c
index 1dbe9223b9..0dd03779a5 100644
--- a/apps/tree.c
+++ b/apps/tree.c
@@ -1368,16 +1368,14 @@ void tree_flush(void)
 #ifdef HAVE_TC_RAMCACHE
     tagcache_unload_ramcache();
 #endif
-    
+
 #ifdef HAVE_DIRCACHE
     if (global_settings.dircache)
     {
+        global_settings.dircache_size = dircache_get_cache_size();
 # ifdef HAVE_EEPROM
         if (dircache_is_enabled() && firmware_settings.initialized)
-        {
-            global_settings.dircache_size = dircache_get_cache_size();
             dircache_save(DIRCACHE_FILE);
-        }
 # endif
         dircache_disable();
     }
@@ -1395,6 +1393,10 @@ void tree_restore(void)
     firmware_settings.disk_clean = false;
 #endif
     
+#ifdef HAVE_TC_RAMCACHE
+    remove(TAGCACHE_STATEFILE);
+#endif
+    
 #ifdef HAVE_DIRCACHE
     remove(DIRCACHE_FILE);
     if (global_settings.dircache)
diff --git a/firmware/eeprom_settings.c b/firmware/eeprom_settings.c
index 450eff9623..ad2c9c848f 100644
--- a/firmware/eeprom_settings.c
+++ b/firmware/eeprom_settings.c
@@ -27,13 +27,20 @@
 
 struct eeprom_settings firmware_settings;
 
-static void reset_config(void)
+static bool reset_config(void)
 {
     memset(&firmware_settings, 0, sizeof(struct eeprom_settings));
+#ifdef BOOTLOADER
+    /* Don't reset settings if we are inside bootloader. */
+    firmware_settings.initialized = false;
+#else
     firmware_settings.version = EEPROM_SETTINGS_VERSION;
     firmware_settings.initialized = true;
     firmware_settings.boot_disk = false;
     firmware_settings.bl_version = 0;
+#endif
+    
+    return firmware_settings.initialized;
 }
 
 bool eeprom_settings_init(void)
@@ -69,23 +76,20 @@ bool eeprom_settings_init(void)
     if (firmware_settings.version != EEPROM_SETTINGS_VERSION)
     {
         logf("Version mismatch");
-        reset_config();
-        return true;
+        return reset_config();
     }
     
     if (firmware_settings.checksum != sum)
     {
         logf("Checksum mismatch");
-        reset_config();
-        return true;
+        return reset_config();
     }
     
 #ifndef BOOTLOADER
     if (firmware_settings.bl_version < EEPROM_SETTINGS_BL_MINVER)
     {
         logf("Too old bootloader: %d", firmware_settings.bl_version);
-        reset_config();
-        return true;
+        return reset_config();
     }
 #endif
     
diff --git a/firmware/system.c b/firmware/system.c
index bb09dbcd59..c635254a8a 100644
--- a/firmware/system.c
+++ b/firmware/system.c
@@ -84,7 +84,17 @@ bool detect_flashed_rockbox(void)
     struct flash_header hdr;
     uint8_t *src = (uint8_t *)FLASH_ENTRYPOINT;
     
+# ifndef BOOTLOADER
+    int oldmode;
+    oldmode = system_memory_guard(MEMGUARD_NONE);
+# endif
+    
     memcpy(&hdr, src, sizeof(struct flash_header));
+    
+# ifndef BOOTLOADER
+    system_memory_guard(oldmode);
+# endif
+    
     if (hdr.magic != FLASH_MAGIC)
         return false;