Добавить переносимый драйвер parallel NAND

c/parallel-nand/include/parallel_nand_gas.h

@@ -0,0 +1,84 @@
+#ifndef PARALLEL_NAND_GAS_H
+#define PARALLEL_NAND_GAS_H
+
+#include "parallel_nand.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PNAND_GAS_DEFAULT_BASE       0xE000U
+#define PNAND_GAS_REGION_REGS        0x0520U
+#define PNAND_GAS_DATA_OFFSET        0x0100U
+#define PNAND_GAS_DATA_REGS          1024U
+#define PNAND_GAS_OOB_OFFSET         0x0500U
+#define PNAND_GAS_OOB_REGS             32U
+
+enum {
+    PNAND_GAS_REG_SIGNATURE = 0x0000,
+    PNAND_GAS_REG_VERSION = 0x0001,
+    PNAND_GAS_REG_STATUS = 0x0002,
+    PNAND_GAS_REG_ERROR = 0x0003,
+    PNAND_GAS_REG_COMMAND = 0x0004,
+    PNAND_GAS_REG_PAGE_LO = 0x0005,
+    PNAND_GAS_REG_PAGE_HI = 0x0006,
+    PNAND_GAS_REG_PAGE_MAIN = 0x0007,
+    PNAND_GAS_REG_PAGE_OOB = 0x0008,
+    PNAND_GAS_REG_PAGES_PER_BLOCK = 0x0009,
+    PNAND_GAS_REG_BLOCKS = 0x000A,
+    PNAND_GAS_REG_MANUFACTURER_ID = 0x000B,
+    PNAND_GAS_REG_DEVICE_ID = 0x000C,
+    PNAND_GAS_REG_BAD_BLOCK = 0x000D,
+    PNAND_GAS_REG_GENERATION_LO = 0x000E,
+    PNAND_GAS_REG_GENERATION_HI = 0x000F
+};
+
+enum {
+    PNAND_GAS_CMD_NONE = 0,
+    PNAND_GAS_CMD_RESET = 1,
+    PNAND_GAS_CMD_READ_ID = 2,
+    PNAND_GAS_CMD_READ_PAGE = 3
+};
+
+#define PNAND_GAS_STATUS_READY       0x0001U
+#define PNAND_GAS_STATUS_BUSY        0x0002U
+#define PNAND_GAS_STATUS_PAGE_VALID  0x0004U
+#define PNAND_GAS_STATUS_BAD_BLOCK   0x0008U
+#define PNAND_GAS_STATUS_ERROR       0x8000U
+
+typedef struct {
+    parallel_nand_t *nand;
+    unsigned int base;
+    unsigned int status;
+    int error;
+    unsigned long selected_page;
+    unsigned long generation;
+    unsigned long cached_block;
+    int cached_bad_block;
+    int block_cache_valid;
+    pnand_octet_t id[8];
+    pnand_octet_t main_data[PNAND_MT29F1G08_PAGE_MAIN];
+    pnand_octet_t oob[PNAND_MT29F1G08_PAGE_OOB];
+} parallel_nand_gas_t;
+
+void parallel_nand_gas_init(parallel_nand_gas_t *gas,
+                            parallel_nand_t *nand, unsigned int base);
+
+/* Portable GAS callbacks. Values and addresses are exactly 16 bits on wire. */
+typedef enum {
+    PNAND_GAS_OK = 0,
+    PNAND_GAS_NO_REG,
+    PNAND_GAS_READ_ONLY,
+    PNAND_GAS_REJECTED
+} parallel_nand_gas_result_t;
+
+parallel_nand_gas_result_t parallel_nand_gas_read(
+    parallel_nand_gas_t *gas, unsigned int address, unsigned int *value);
+parallel_nand_gas_result_t parallel_nand_gas_write(
+    parallel_nand_gas_t *gas, unsigned int address, unsigned int value);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif