1 files changed, 101 insertions, 0 deletions
diff --git a/lib/ultralib/src/io/pfsinitpak.c b/lib/ultralib/src/io/pfsinitpak.c
new file mode 100644
index 0000000..927636f
--- /dev/null
+++ b/lib/ultralib/src/io/pfsinitpak.c
@@ -0,0 +1,101 @@
+#include "PR/os_internal.h"
+#include "controller.h"
+
+static s32 __osPfsCheckRamArea(OSPfs* pfs);
+
+s32 osPfsInitPak(OSMesgQueue* queue, OSPfs* pfs, int channel) {
+    s32 ret;
+    u16 sum;
+    u16 isum;
+    u8 temp[BLOCKSIZE];
+    __OSPackId* id;
+    __OSPackId newid;
+
+    __osSiGetAccess();
+
+    ret = __osPfsGetStatus(queue, channel);
+
+    __osSiRelAccess();
+
+    if (ret != 0) {
+        return ret;
+    }
+
+    pfs->queue = queue;
+    pfs->channel = channel;
+    pfs->status = 0;
+
+    ERRCK(__osPfsCheckRamArea(pfs));
+    ERRCK(__osPfsSelectBank(pfs, 0));
+    ERRCK(__osContRamRead(pfs->queue, pfs->channel, PFS_ID_0AREA, temp));
+
+    __osIdCheckSum((u16*)temp, &sum, &isum);
+    id = (__OSPackId*)temp;
+
+    if ((id->checksum != sum) || (id->inverted_checksum != isum)) {
+        ret = __osCheckPackId(pfs, id);
+
+        if (ret != 0) {
+            pfs->status |= PFS_ID_BROKEN;
+            return ret;
+        }
+    }
+
+    if (!(id->deviceid & 1)) {
+        ret = __osRepairPackId(pfs, id, &newid);
+
+        if (ret != 0) {
+            if (ret == PFS_ERR_ID_FATAL) {
+                pfs->status |= PFS_ID_BROKEN;
+            }
+            return ret;
+        }
+
+        id = &newid;
+
+        if (!(id->deviceid & 1)) {
+            return PFS_ERR_DEVICE;
+        }
+    }
+
+    bcopy(id, pfs->id, BLOCKSIZE);
+
+    pfs->version = id->version;
+    pfs->banks = id->banks;
+    pfs->inode_start_page = 1 + DEF_DIR_PAGES + (2 * pfs->banks);
+    pfs->dir_size = DEF_DIR_PAGES * PFS_ONE_PAGE;
+    pfs->inode_table = 1 * PFS_ONE_PAGE;
+    pfs->minode_table = (1 + pfs->banks) * PFS_ONE_PAGE;
+    pfs->dir_table = pfs->minode_table + (pfs->banks * PFS_ONE_PAGE);
+
+    ERRCK(__osContRamRead(pfs->queue, pfs->channel, PFS_LABEL_AREA, pfs->label));
+
+    ret = osPfsChecker(pfs);
+    pfs->status |= PFS_INITIALIZED;
+
+    return ret;
+}
+
+static s32 __osPfsCheckRamArea(OSPfs* pfs) {
+    s32 i = 0;
+    s32 ret = 0;
+    u8 temp1[BLOCKSIZE];
+    u8 temp2[BLOCKSIZE];
+    u8 save[BLOCKSIZE];
+
+    ERRCK(__osPfsSelectBank(pfs, 0));
+    ERRCK(__osContRamRead(pfs->queue, pfs->channel, 0, save));
+
+    for (i = 0; i < BLOCKSIZE; i++) {
+        temp1[i] = i;
+    }
+
+    ERRCK(__osContRamWrite(pfs->queue, pfs->channel, 0, temp1, FALSE));
+    ERRCK(__osContRamRead(pfs->queue, pfs->channel, 0, temp2));
+
+    if (bcmp(temp1, temp2, BLOCKSIZE) != 0) {
+        return PFS_ERR_DEVICE;
+    }
+
+    return __osContRamWrite(pfs->queue, pfs->channel, 0, save, FALSE);
+}