FS_rom.c

2 files changed, 118 insertions, 1 deletions

diff --git a/arm9/lib/src/FS_rom.c b/arm9/lib/src/FS_rom.c
new file mode 100644
index 00000000..44d31a4a
--- /dev/null
+++ b/arm9/lib/src/FS_rom.c
@@ -0,0 +1,118 @@
+#include "FS_rom.h"
+#include "FS_archive.h"
+#include "FS_file.h"
+#include "CARD_pullOut.h"
+#include "CARD_rom.h"
+#include "CARD_common.h"
+#include "MB_mb.h"
+#include "OS_printf.h"
+
+u32 fsi_default_dma_no;
+
+void FSi_OnRomReadDone(void * p_arc)
+{
+    FS_NotifyArchiveAsyncEnd(p_arc, CARD_IsPulledOut() ? FS_RESULT_ERROR : FS_RESULT_SUCCESS);
+}
+
+FSResult FSi_ReadRomCallback(FSArchive * p_arc, void * dst, u32 src, u32 len)
+{
+    CARD_ReadRomAsync(fsi_default_dma_no, (const void *)src, dst, len, FSi_OnRomReadDone, p_arc);
+    return FS_RESULT_PROC_ASYNC;
+}
+
+FSResult FSi_WriteDummyCallback(FSArchive * p_arc, const void *src, u32 dst, u32 len)
+{
+    return FS_RESULT_FAILURE;
+}
+
+FSResult FSi_RomArchiveProc(FSFile * p_arc, FSCommandType cmd)
+{
+    switch (cmd)
+    {
+    case FS_COMMAND_ACTIVATE:
+        CARD_LockRom(fsi_card_lock_id);
+        return FS_RESULT_SUCCESS;
+    case FS_COMMAND_IDLE:
+        CARD_UnlockRom(fsi_card_lock_id);
+        return FS_RESULT_SUCCESS;
+    case FS_COMMAND_WRITEFILE:
+        return FS_RESULT_UNSUPPORTED;
+    default:
+        return FS_RESULT_PROC_UNKNOWN;
+    }
+}
+
+FSResult FSi_ReadDummyCallback(FSArchive *p_arc, void *dst, u32 src, u32 len)
+{
+    return FS_RESULT_FAILURE;
+}
+
+FSResult FSi_EmptyArchiveProc(FSFile *p_file, FSCommandType cmd)
+{
+    return FS_RESULT_UNSUPPORTED;
+}
+
+void FSi_InitRom(u32 default_dma_no)
+{
+    fsi_default_dma_no = default_dma_no;
+    fsi_card_lock_id = OS_GetLockID();
+    fsi_ovt9.offset = 0;
+    fsi_ovt9.length = 0;
+    fsi_ovt7.offset = 0;
+    fsi_ovt7.length = 0;
+
+    CARD_Init();
+
+    FS_InitArchive(&fsi_arc_rom);
+    FS_RegisterArchiveName(&fsi_arc_rom, "rom", 3);
+
+    if (MB_IsMultiBootChild())
+    {
+        fsi_ovt9.offset = (u32)~0;
+        fsi_ovt9.length = 0;
+        fsi_ovt7.offset = (u32)~0;
+        fsi_ovt7.length = 0;
+        FS_SetArchiveProc(&fsi_arc_rom, FSi_EmptyArchiveProc, (u32)FS_ARCHIVE_PROC_ALL);
+        FS_LoadArchive(&fsi_arc_rom, 0x00000000, 0, 0, 0, 0, FSi_ReadDummyCallback, FSi_WriteDummyCallback);
+    }
+    else
+    {
+        const CARDRomRegion *const fnt = CARD_GetRomRegionFNT();
+        const CARDRomRegion *const fat = CARD_GetRomRegionFAT();
+
+        FS_SetArchiveProc(&fsi_arc_rom, FSi_RomArchiveProc,
+                          FS_ARCHIVE_PROC_WRITEFILE |
+                          FS_ARCHIVE_PROC_ACTIVATE | FS_ARCHIVE_PROC_IDLE);
+
+        if ((fnt->offset == 0xFFFFFFFF) || (fnt->offset == 0x00000000) ||
+            (fat->offset == 0xFFFFFFFF) || (fat->offset == 0x00000000))
+        {
+            OS_Warning("file-system : no MAKEROM-information in rom header.");
+        }
+        else
+        {
+            FS_LoadArchive(&fsi_arc_rom, 0x00000000,
+                                 fat->offset, fat->length,
+                                 fnt->offset, fnt->length,
+                                 FSi_ReadRomCallback, FSi_WriteDummyCallback);
+        }
+    }
+}
+
+u32 FS_SetDefaultDMA(u32 dma_no)
+{
+    OSIntrMode bak_psr = OS_DisableInterrupts();
+    u32 bak_dma_no = fsi_default_dma_no;
+    BOOL bak_stat = FS_SuspendArchive(&fsi_arc_rom);
+    fsi_default_dma_no = dma_no;
+    if (bak_stat)
+        FS_ResumeArchive(&fsi_arc_rom);
+    OS_RestoreInterrupts(bak_psr);
+    return bak_dma_no;
+}
+
+u32 FS_TryLoadTable(void * p_mem, u32 size)
+{
+    return FS_LoadArchiveTables(&fsi_arc_rom, p_mem, size);
+}
+
diff --git a/arm9/lib/src/OS_reset.c b/arm9/lib/src/OS_reset.c
index b12703da..774b392b 100644
--- a/arm9/lib/src/OS_reset.c
+++ b/arm9/lib/src/OS_reset.c
@@ -14,7 +14,6 @@ extern void PXI_SetFifoRecvCallback(u32 param1, void* callback);
 extern void OS_Terminate();
 extern u32 PXI_SendWordByFifo(u32 param1, u32 data, u32 param2);
 extern void CARD_LockRom(u16 lockId);
-extern u32 OS_GetLockID();
 extern void MI_StopDma(u32 dma);
 extern void OS_SetIrqMask(u32 mask);
 extern void OS_ResetRequestIrqMask(u32 mask);