--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/drivers/drv_app/ffs/board/drv.h	Fri May 15 01:28:16 2020 +0000
@@ -0,0 +1,189 @@
+/******************************************************************************
+ * Flash File System (ffs)
+ * Idea, design and coding by Mads Meisner-Jensen, mmj@ti.com
+ *
+ * ffs low level flash driver
+ *
+ * $Id: drv.h 1.15.1.25.1.1.1.20 Mon, 17 Nov 2003 08:51:37 +0100 tsj $
+ *
+ ******************************************************************************/
+
+#ifndef TARGET
+#include "ffs.cfg"
+#endif
+
+#if (TARGET == 1)
+#include "chipset.cfg"
+#endif
+
+
+/******************************************************************************
+ * Compile constants
+ ******************************************************************************/
+
+// FFS driver version (in four-digit BCD format). Format is MMID, where MM
+// is major revision number, incremented e.g. for major revision or support
+// for new flash family/driver. I is minor revision that is incremented for
+// minor changes or when a bug is corrected. D is incremented when support
+// of another device is added.
+#define FFS_DRV_VERSION ((uint16) 0x1011)
+
+// Default Allocation granularity of ffs data sectors (as power of two)
+#define FFS_ATOM_LOG2 4
+
+
+/******************************************************************************
+ * Macros
+ ******************************************************************************/
+
+// Convert between address and block index. Only works if all blocks are the
+// same size!
+#define block2addr(block) (dev.base + dev.binfo[block].offset)
+
+// Note that it is *VERY* important that pointers to hardware and flash are
+// declared volatile, otherwise the compiler optimizes some reads and writes
+// out and this results in non-working code!
+#define FLASH_WRITE_HALFWORD(addr, data) *(volatile uint16 *) (addr) = (data)
+#define FLASH_READ_HALFWORD(addr) *((volatile uint16 *) (addr))
+
+#if (TARGET == 1)
+
+#include "memif/mem.h"
+#if (CHIPSET == 12)
+  #include "sys_inth.h"
+#else
+#include "inth/inth.h" 
+#endif
+
+#if (CHIPSET == 3)
+#define INT_REQUESTED (*(volatile uint16 *) INTH_IT_REG) & \
+                        ~(*(volatile uint16 *) INTH_MASK_REG)
+#elif (CHIPSET == 4 || CHIPSET == 5 || CHIPSET == 6 || CHIPSET == 7 || CHIPSET == 8 || CHIPSET == 9 || CHIPSET == 10 || CHIPSET == 11)
+#define INT_REQUESTED ((*(volatile uint16 *) INTH_IT_REG1) & \
+                         ~(*(volatile uint16 *) INTH_MASK_REG1)) || \
+                        ((*(volatile uint16 *) INTH_IT_REG2) & \
+                         ~(*(volatile uint16 *) INTH_MASK_REG2))
+#elif (CHIPSET == 12)
+#define INT_REQUESTED ((*(volatile uint16 *) C_INTH_IT_REG1) & \
+                         ~(*(volatile uint16 *) C_INTH_MASK_REG1)) || \
+                        ((*(volatile uint16 *) C_INTH_IT_REG2) & \
+                         ~(*(volatile uint16 *) C_INTH_MASK_REG2))
+#endif
+#endif // (TARGET == 1)
+
+
+/******************************************************************************
+ * Types
+ ******************************************************************************/
+
+// Flash driver identifiers.
+enum FFS_DRIVER {
+    FFS_DRIVER_NULL          =  0, // Null driver
+
+    FFS_DRIVER_AMD           =  2, // AMD dual/multi-bank driver
+    FFS_DRIVER_AMD_SB        =  3, // AMD single-bank driver
+
+    FFS_DRIVER_SST           =  8, // SST dual/multi-bank driver
+    FFS_DRIVER_SST_SB        =  9, // SST single-bank driver
+
+    FFS_DRIVER_INTEL         = 16, // Intel dual/multi-bank driver
+    FFS_DRIVER_INTEL_SB      = 17, // Intel single-bank driver
+
+    FFS_DRIVER_AMD_PSEUDO_SB = 32, // Test driver
+    FFS_DRIVER_TEST          = 34, // Test driver
+
+    FFS_DRIVER_RAM           = 64  // Ram driver
+};
+
+
+// Manufacturer identifiers. These should never have to be changed. They are
+// ordered in alphabetically ascending order.
+enum FFS_MANUFACTURER {
+    MANUFACT_AMD     = 0x01,
+    MANUFACT_ATMEL   = 0x1F,
+    MANUFACT_FUJITSU = 0x04,
+    MANUFACT_INTEL   = 0x89,
+    MANUFACT_MXIC    = 0xC2,
+    MANUFACT_SAMSUNG = 0xEC,
+    MANUFACT_SHARP   = 0xB0,
+    MANUFACT_SST     = 0xBF,
+    MANUFACT_TOSHIBA = 0x98,
+    MANUFACT_RAM     = 0xFE, // Ram 
+    MANUFACT_TEST    = 0x54  // 'T'est manufacturer
+};
+
+
+// Flash block information for one ffs block (flash sector). Note that the
+// ffs block definition might be of a smaller size then the physical flash
+// sector. The ffs blocks must be defined in ascending order of addresses.
+struct block_info_s {
+    uint32 offset;
+    uint8  size_ld;   // log2 of block size
+    uint8  unused1;
+    uint8  unused2;
+    uint8  unused3;
+};
+
+
+// General flash information for one flash device
+struct flash_info_s {
+    const struct block_info_s *binfo; // block info array for this device
+    char   *base;      // base flash address of ffs blocks
+    uint16 manufact;   // read with flash A0 = 0
+    uint16 device;     // read with flash A0 = 1
+    uint8  driver;     // flash driver type
+    uint8  numblocks;  // number of blocks defined for use by ffs
+};
+extern const struct flash_info_s flash_info[];
+
+enum DEVICE_STATE {
+    DEV_READ,
+    DEV_ERASE,
+    DEV_ERASE_SUSPEND,
+    DEV_WRITE
+};
+
+
+// Note that it is *VERY* important that pointers to hardware and flash are
+// declared volatile, otherwise the compiler optimizes some reads and writes
+// out and this results in non-working code!
+struct dev_s {
+    char   *base;       // base flash address of ffs blocks
+    struct block_info_s *binfo;
+    uint16 manufact;
+    uint16 device;
+    volatile uint16 *addr; // address being written or erased
+    uint16 data;           // data currently being written (dev.state = WRITE)
+    uint32 blocksize;
+    uint8  blocksize_ld;
+    uint8  atomlog2;
+    uint8  driver;
+    uint8  state;       // state of device (DEVICE_STATE)
+    uint8  numblocks;
+    uint8  atomsize;
+    uint8  atomnotmask;
+};
+extern struct dev_s dev;
+
+    
+// Flash low level driver function pointers
+struct ffsdrv_s {
+    int  (* init)(void);
+    void (* erase)(uint8 block);
+    void (* write_halfword)(volatile uint16 *dst, uint16 value);
+    void (* write)(void *dst, const void *src, uint16 size);
+    void (* write_end)(void);
+    void (* erase_suspend)(void);
+    void (* erase_resume)(void);
+};
+extern struct ffsdrv_s ffsdrv;
+
+
+/******************************************************************************
+ * Function Prototypes
+ ******************************************************************************/
+
+void ffsdrv_write_byte(void *dst, uint8 value);
+effs_t ffsdrv_init(void);
+
+extern int ffs_ram_image_address;