a stab at turning on rudimentary logging for telefiretwo
[fw/altos] / src / kernel / ao_log.c
index 76e0e68c56c89a3286a5f53500210f709b4ef497..0589b4b00513b4fb8b80b03d22b7275dfc510a2b 100644 (file)
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
 #include "ao.h"
 #include <ao_log.h>
 #include <ao_config.h>
+#if HAS_TRACKER
+#include <ao_tracker.h>
+#endif
 
+__xdata uint8_t        ao_log_mutex;
 __pdata uint32_t ao_log_current_pos;
 __pdata uint32_t ao_log_end_pos;
 __pdata uint32_t ao_log_start_pos;
@@ -67,6 +72,18 @@ ao_log_write_erase(uint8_t pos)
        erase.mark = LOG_ERASE_MARK;
        erase.flight = ao_flight_number;
        ao_config_write(ao_log_erase_pos(pos),  &erase, sizeof (erase));
+
+#if USE_EEPROM_CONFIG
+       if (pos == 0) {
+               uint8_t i;
+               for (i = 1; i < LOG_MAX_ERASE; i++) {
+                       erase.mark = ~LOG_ERASE_MARK;
+                       erase.flight = 0;
+                       ao_config_write(ao_log_erase_pos(i), &erase, sizeof (erase));
+               }
+       }
+#endif
+
        ao_config_flush();
 }
 
@@ -126,19 +143,39 @@ ao_log_max_flight(void)
        return max_flight;
 }
 
-void
-ao_log_scan(void) __reentrant
+static void
+ao_log_erase(uint8_t slot) __reentrant
 {
-       uint8_t         log_slot;
-       uint8_t         log_slots;
-       uint8_t         log_want;
-
-       ao_config_get();
+       uint32_t log_current_pos, log_end_pos;
+
+       ao_log_erase_mark();
+       log_current_pos = ao_log_pos(slot);
+       log_end_pos = log_current_pos + ao_config.flight_log_max;
+       while (log_current_pos < log_end_pos) {
+               uint8_t i;
+               static __xdata uint8_t b;
+
+               /*
+                * Check to see if we've reached the end of
+                * the used memory to avoid re-erasing the same
+                * memory over and over again
+                */
+               for (i = 0; i < 16; i++) {
+                       if (ao_storage_read(log_current_pos + i, &b, 1))
+                               if (b != 0xff)
+                                       break;
+               }
+               if (i == 16)
+                       break;
+               ao_storage_erase(log_current_pos);
+               log_current_pos += ao_storage_block;
+       }
+}
 
-       ao_flight_number = ao_log_max_flight();
-       if (ao_flight_number)
-               if (++ao_flight_number == 0)
-                       ao_flight_number = 1;
+static void
+ao_log_find_max_erase_flight(void) __reentrant
+{
+       uint8_t log_slot;
 
        /* Now look through the log of flight numbers from erase operations and
         * see if the last one is bigger than what we found above
@@ -154,6 +191,80 @@ ao_log_scan(void) __reentrant
        }
        if (ao_flight_number == 0)
                ao_flight_number = 1;
+}
+
+uint8_t
+ao_log_scan(void) __reentrant
+{
+       uint8_t         log_slot;
+       uint8_t         log_slots;
+#if FLIGHT_LOG_APPEND
+       uint8_t         ret;
+#else
+       uint8_t         log_want;
+#endif
+
+       ao_config_get();
+
+       /* Get any existing flight number */
+       ao_flight_number = ao_log_max_flight();
+
+#if FLIGHT_LOG_APPEND
+
+       /* Deal with older OS versions which stored multiple
+        * flights in rom by erasing everything after the first
+        * slot
+        */
+       if (ao_config.flight_log_max != ao_storage_log_max) {
+               log_slots = ao_log_slots();
+               for (log_slot = 1; log_slot < log_slots; log_slot++) {
+                       if (ao_log_flight(log_slot) != 0)
+                               ao_log_erase(log_slot);
+               }
+               ao_config_log_fix_append();
+       }
+       ao_log_current_pos = ao_log_pos(0);
+       ao_log_end_pos = ao_log_current_pos + ao_storage_log_max;
+
+       if (ao_flight_number) {
+               uint32_t        full = ao_log_current_pos;
+               uint32_t        empty = ao_log_end_pos - ao_log_size;
+
+               /* If there's already a flight started, then find the
+                * end of it
+                */
+               for (;;) {
+                       ao_log_current_pos = (full + empty) >> 1;
+                       ao_log_current_pos -= ao_log_current_pos % ao_log_size;
+
+                       if (ao_log_current_pos == full) {
+                               if (ao_log_check(ao_log_current_pos))
+                                       ao_log_current_pos += ao_log_size;
+                               break;
+                       }
+                       if (ao_log_current_pos == empty)
+                               break;
+
+                       if (ao_log_check(ao_log_current_pos)) {
+                               full = ao_log_current_pos;
+                       } else {
+                               empty = ao_log_current_pos;
+                       }
+               }
+               ret = 1;
+       } else {
+               ao_log_find_max_erase_flight();
+               ret = 0;
+       }
+       ao_wakeup(&ao_flight_number);
+       return ret;
+#else
+
+       if (ao_flight_number)
+               if (++ao_flight_number == 0)
+                       ao_flight_number = 1;
+
+       ao_log_find_max_erase_flight();
 
        /* With a flight number in hand, find a place to write a new log,
         * use the target flight number to index the available log slots so
@@ -174,8 +285,9 @@ ao_log_scan(void) __reentrant
                if (++log_slot >= log_slots)
                        log_slot = 0;
        } while (log_slot != log_want);
-
        ao_wakeup(&ao_flight_number);
+       return 0;
+#endif
 }
 
 void
@@ -248,28 +360,13 @@ ao_log_delete(void) __reentrant
        if (ao_cmd_lex_i) {
                for (slot = 0; slot < slots; slot++) {
                        if (ao_log_flight(slot) == ao_cmd_lex_i) {
-                               ao_log_erase_mark();
-                               ao_log_current_pos = ao_log_pos(slot);
-                               ao_log_end_pos = ao_log_current_pos + ao_config.flight_log_max;
-                               while (ao_log_current_pos < ao_log_end_pos) {
-                                       uint8_t i;
-                                       static __xdata uint8_t b;
-
-                                       /*
-                                        * Check to see if we've reached the end of
-                                        * the used memory to avoid re-erasing the same
-                                        * memory over and over again
-                                        */
-                                       for (i = 0; i < 16; i++) {
-                                               if (ao_storage_read(ao_log_current_pos + i, &b, 1))
-                                                       if (b != 0xff)
-                                                               break;
-                                       }
-                                       if (i == 16)
-                                               break;
-                                       ao_storage_erase(ao_log_current_pos);
-                                       ao_log_current_pos += ao_storage_block;
-                               }
+#if HAS_TRACKER
+                               ao_tracker_erase_start(ao_cmd_lex_i);
+#endif
+                               ao_log_erase(slot);
+#if HAS_TRACKER
+                               ao_tracker_erase_end();
+#endif
                                puts("Erased");
                                return;
                        }