X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fkernel%2Fao_storage.h;h=ff8548eb150d71bb73a92ddf4457e7079a7a760f;hp=cf37a824db0a1c986603fd0b267d9cce59bcaaf4;hb=HEAD;hpb=0686a7b8aec524d81bda4c572549a3a068ce0eed

diff --git a/src/kernel/ao_storage.h b/src/kernel/ao_storage.h
index cf37a824..ff8548eb 100644
--- a/src/kernel/ao_storage.h
+++ b/src/kernel/ao_storage.h
@@ -31,15 +31,23 @@
 typedef ao_storage_pos_t ao_pos_t;
 
 /* Total bytes of available storage */
+#ifndef ao_storage_total
 extern ao_pos_t	ao_storage_total;
+#endif
 
 /* Block size - device is erased in these units. At least 256 bytes */
+#ifndef ao_storage_block
 extern ao_pos_t	ao_storage_block;
+#endif
 
 #ifndef USE_STORAGE_CONFIG
 #define USE_STORAGE_CONFIG 1
 #endif
 
+#ifndef AO_STORAGE_ERASED_BYTE
+#define AO_STORAGE_ERASED_BYTE 0xff
+#endif
+
 #if USE_STORAGE_CONFIG
 /* Byte offset of config block. Will be ao_storage_block bytes long */
 extern ao_pos_t	ao_storage_config;
@@ -50,7 +58,9 @@ extern ao_pos_t	ao_storage_config;
 #endif
 
 /* Storage unit size - device reads and writes must be within blocks of this size. Usually 256 bytes. */
+#ifndef ao_storage_unit
 extern uint16_t ao_storage_unit;
+#endif
 
 /* Initialize above values. Can only be called once the OS is running */
 void
@@ -66,7 +76,13 @@ ao_storage_read(ao_pos_t pos, void *buf, uint16_t len);
 
 /* Erase a block of storage. This always clears ao_storage_block bytes */
 uint8_t
-ao_storage_erase(ao_pos_t pos);
+ao_storage_erase(ao_pos_t pos, uint32_t len);
+
+/* Check storage starting at pos to see if the chunk there
+ * is erased
+ */
+uint8_t
+ao_storage_is_erased(uint32_t pos);
 
 /* Flush any pending writes to stable storage */
 void
@@ -88,6 +104,10 @@ ao_storage_device_read(ao_pos_t pos, void *buf, uint16_t len);
 uint8_t
 ao_storage_device_write(ao_pos_t pos, void *buf, uint16_t len);
 
+/* Erase device from pos through pos + ao_storage_block */
+uint8_t
+ao_storage_device_erase(uint32_t pos);
+
 /* Initialize low-level device bits */
 void
 ao_storage_device_init(void);