decompile CTRDG_backup

1 files changed, 94 insertions, 0 deletions

diff --git a/arm9/lib/src/CTRDG_backup.c b/arm9/lib/src/CTRDG_backup.c
new file mode 100644
index 00000000..dc1a3f4b
--- /dev/null
+++ b/arm9/lib/src/CTRDG_backup.c
@@ -0,0 +1,94 @@
+#include "CTRDG_backup.h"
+#include "function_target.h"
+#include "OS_spinLock.h"
+
+extern u16 ctrdgi_flash_lock_id;
+extern u16 ctrdgi_sram_lock_id;
+
+extern u16 CTRDGi_ReadFlashID(void);
+
+extern const CTRDGiFlashTypePlus defaultFlash1M;
+extern const CTRDGiFlashTypePlus MX29L010;
+extern const CTRDGiFlashTypePlus LE26FV10N1TS_10;
+
+extern const CTRDGiFlashTypePlus defaultFlash512;
+extern const CTRDGiFlashTypePlus LE39FW512;
+extern const CTRDGiFlashTypePlus AT29LV512_lib;
+extern const CTRDGiFlashTypePlus MN63F805MNP;
+
+static const CTRDGiFlashTypePlus *const flash1M_list[] = {
+        &MX29L010,
+        &LE26FV10N1TS_10,
+        &defaultFlash1M
+};
+
+static const CTRDGiFlashTypePlus *const flash512_list[] = {
+        &LE39FW512,
+        &AT29LV512_lib,
+        &MN63F805MNP,
+        &defaultFlash512
+};
+
+static const u16 readidtime[] = {
+        20
+};
+
+ARM_FUNC u16 CTRDG_IdentifyAgbBackup(CTRDGBackupType type)
+{
+    u16 result = 1;
+    u16 flashID;
+    const CTRDGiFlashTypePlus *const *flp;
+    MICartridgeRamCycle ram_cycle;
+
+    if (type == CTRDG_BACKUP_TYPE_FLASH_512K || type == CTRDG_BACKUP_TYPE_FLASH_1M)
+    {
+        ctrdgi_flash_lock_id = (u16)OS_GetLockID();
+
+        (void)OS_LockCartridge(ctrdgi_flash_lock_id);
+
+        ram_cycle = MI_GetCartridgeRamCycle();
+        MI_SetCartridgeRamCycle(MI_CTRDG_RAMCYCLE_18);
+
+        ctrdgi_fl_maxtime = readidtime;
+        flashID = CTRDGi_ReadFlashID();
+
+        if (type == CTRDG_BACKUP_TYPE_FLASH_512K)
+        {
+            flp = flash512_list;
+        }
+
+        if (type == CTRDG_BACKUP_TYPE_FLASH_1M)
+        {
+            flp = flash1M_list;
+        }
+
+        MI_SetCartridgeRamCycle(ram_cycle);
+        (void)OS_UnlockCartridge(ctrdgi_flash_lock_id);
+
+        result = 1;
+        while ((*flp)->type.makerID != 0)
+        {
+            if ((flashID & 0xff) == *(u16 *)&((*flp)->type.makerID))
+            {
+                result = 0;
+                break;
+            }
+            flp++;
+        }
+        CTRDGi_WriteAgbFlashSector = (*flp)->CTRDGi_WriteAgbFlashSector;
+        CTRDGi_EraseAgbFlashChip = (*flp)->CTRDGi_EraseAgbFlashChip;
+        CTRDGi_EraseAgbFlashSector = (*flp)->CTRDGi_EraseAgbFlashSector;
+        CTRDGi_WriteAgbFlashSectorAsync = (*flp)->CTRDGi_WriteAgbFlashSectorAsync;
+        CTRDGi_EraseAgbFlashChipAsync = (*flp)->CTRDGi_EraseAgbFlashChipAsync;
+        CTRDGi_EraseAgbFlashSectorAsync = (*flp)->CTRDGi_EraseAgbFlashSectorAsync;
+        CTRDGi_PollingSR = (*flp)->CTRDGi_PollingSR;
+        ctrdgi_fl_maxtime = (*flp)->maxtime;
+        AgbFlash = &(*flp)->type;
+    }
+    else if (type == CTRDG_BACKUP_TYPE_SRAM)
+    {
+        ctrdgi_sram_lock_id = (u16)OS_GetLockID();
+        result = 0;
+    }
+    return result;
+}