init

diff --git a/flash.h b/flash.h
new file mode 100644 (file)
index 0000000..a2b19d4
--- /dev/null
+++ b/flash.h
@@ -0,0 +1,290 @@
+/*
+ * Copyright 2018-2020 NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef __FLEXSPI_NOR_CONFIG__
+#define __FLEXSPI_NOR_CONFIG__
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+/* FLEXSPI memory config block related defintions */
+#define FLEXSPI_CFG_BLK_TAG     (0x42464346UL) // ascii "FCFB" Big Endian
+#define FLEXSPI_CFG_BLK_VERSION (0x56010400UL) // V1.4.0
+#define FLEXSPI_CFG_BLK_SIZE    (512)
+
+/* FLEXSPI Feature related definitions */
+#define FLEXSPI_FEATURE_HAS_PARALLEL_MODE 1
+
+/* Lookup table related defintions */
+#define CMD_INDEX_READ        0
+#define CMD_INDEX_READSTATUS  1
+#define CMD_INDEX_WRITEENABLE 2
+#define CMD_INDEX_WRITE       4
+
+#define CMD_LUT_SEQ_IDX_READ        0
+#define CMD_LUT_SEQ_IDX_READSTATUS  1
+#define CMD_LUT_SEQ_IDX_WRITEENABLE 3
+#define CMD_LUT_SEQ_IDX_WRITE       9
+
+#define CMD_SDR        0x01
+#define CMD_DDR        0x21
+#define RADDR_SDR      0x02
+#define RADDR_DDR      0x22
+#define CADDR_SDR      0x03
+#define CADDR_DDR      0x23
+#define MODE1_SDR      0x04
+#define MODE1_DDR      0x24
+#define MODE2_SDR      0x05
+#define MODE2_DDR      0x25
+#define MODE4_SDR      0x06
+#define MODE4_DDR      0x26
+#define MODE8_SDR      0x07
+#define MODE8_DDR      0x27
+#define WRITE_SDR      0x08
+#define WRITE_DDR      0x28
+#define READ_SDR       0x09
+#define READ_DDR       0x29
+#define LEARN_SDR      0x0A
+#define LEARN_DDR      0x2A
+#define DATSZ_SDR      0x0B
+#define DATSZ_DDR      0x2B
+#define DUMMY_SDR      0x0C
+#define DUMMY_DDR      0x2C
+#define DUMMY_RWDS_SDR 0x0D
+#define DUMMY_RWDS_DDR 0x2D
+#define JMP_ON_CS      0x1F
+#define STOP           0
+
+#define FLEXSPI_1PAD 0
+#define FLEXSPI_2PAD 1
+#define FLEXSPI_4PAD 2
+#define FLEXSPI_8PAD 3
+
+
+/*! @name LUT - LUT 0..LUT 63 */
+/*! @{ */
+#define FLEXSPI_LUT_OPERAND0_MASK                (0xFFU)
+#define FLEXSPI_LUT_OPERAND0_SHIFT               (0U)
+/*! OPERAND0 - OPERAND0
+ */
+#define FLEXSPI_LUT_OPERAND0(x)                  (((uint32_t)(((uint32_t)(x)) << FLEXSPI_LUT_OPERAND0_SHIFT)) & FLEXSPI_LUT_OPERAND0_MASK)
+#define FLEXSPI_LUT_NUM_PADS0_MASK               (0x300U)
+#define FLEXSPI_LUT_NUM_PADS0_SHIFT              (8U)
+/*! NUM_PADS0 - NUM_PADS0
+ */
+#define FLEXSPI_LUT_NUM_PADS0(x)                 (((uint32_t)(((uint32_t)(x)) << FLEXSPI_LUT_NUM_PADS0_SHIFT)) & FLEXSPI_LUT_NUM_PADS0_MASK)
+#define FLEXSPI_LUT_OPCODE0_MASK                 (0xFC00U)
+#define FLEXSPI_LUT_OPCODE0_SHIFT                (10U)
+/*! OPCODE0 - OPCODE
+ */
+#define FLEXSPI_LUT_OPCODE0(x)                   (((uint32_t)(((uint32_t)(x)) << FLEXSPI_LUT_OPCODE0_SHIFT)) & FLEXSPI_LUT_OPCODE0_MASK)
+#define FLEXSPI_LUT_OPERAND1_MASK                (0xFF0000U)
+#define FLEXSPI_LUT_OPERAND1_SHIFT               (16U)
+/*! OPERAND1 - OPERAND1
+ */
+#define FLEXSPI_LUT_OPERAND1(x)                  (((uint32_t)(((uint32_t)(x)) << FLEXSPI_LUT_OPERAND1_SHIFT)) & FLEXSPI_LUT_OPERAND1_MASK)
+#define FLEXSPI_LUT_NUM_PADS1_MASK               (0x3000000U)
+#define FLEXSPI_LUT_NUM_PADS1_SHIFT              (24U)
+/*! NUM_PADS1 - NUM_PADS1
+ */
+#define FLEXSPI_LUT_NUM_PADS1(x)                 (((uint32_t)(((uint32_t)(x)) << FLEXSPI_LUT_NUM_PADS1_SHIFT)) & FLEXSPI_LUT_NUM_PADS1_MASK)
+#define FLEXSPI_LUT_OPCODE1_MASK                 (0xFC000000U)
+#define FLEXSPI_LUT_OPCODE1_SHIFT                (26U)
+/*! OPCODE1 - OPCODE1
+ */
+#define FLEXSPI_LUT_OPCODE1(x)                   (((uint32_t)(((uint32_t)(x)) << FLEXSPI_LUT_OPCODE1_SHIFT)) & FLEXSPI_LUT_OPCODE1_MASK)
+/*! @} */
+
+#define FLEXSPI_LUT_SEQ(cmd0, pad0, op0, cmd1, pad1, op1)                                                              \
+    (FLEXSPI_LUT_OPERAND0(op0) | FLEXSPI_LUT_NUM_PADS0(pad0) | FLEXSPI_LUT_OPCODE0(cmd0) | FLEXSPI_LUT_OPERAND1(op1) | \
+     FLEXSPI_LUT_NUM_PADS1(pad1) | FLEXSPI_LUT_OPCODE1(cmd1))
+
+//!@brief Definitions for FlexSPI Serial Clock Frequency
+typedef enum _FlexSpiSerialClockFreq
+{
+    kFlexSpiSerialClk_30MHz  = 1,
+    kFlexSpiSerialClk_50MHz  = 2,
+    kFlexSpiSerialClk_60MHz  = 3,
+    kFlexSpiSerialClk_75MHz  = 4,
+    kFlexSpiSerialClk_80MHz  = 5,
+    kFlexSpiSerialClk_100MHz = 6,
+    kFlexSpiSerialClk_120MHz = 7,
+    kFlexSpiSerialClk_133MHz = 8,
+    kFlexSpiSerialClk_166MHz = 9,
+} flexspi_serial_clk_freq_t;
+
+//!@brief FlexSPI clock configuration type
+enum
+{
+    kFlexSpiClk_SDR, //!< Clock configure for SDR mode
+    kFlexSpiClk_DDR, //!< Clock configurat for DDR mode
+};
+
+//!@brief FlexSPI Read Sample Clock Source definition
+typedef enum _FlashReadSampleClkSource
+{
+    kFlexSPIReadSampleClk_LoopbackInternally      = 0,
+    kFlexSPIReadSampleClk_LoopbackFromDqsPad      = 1,
+    kFlexSPIReadSampleClk_LoopbackFromSckPad      = 2,
+    kFlexSPIReadSampleClk_ExternalInputFromDqsPad = 3,
+} flexspi_read_sample_clk_t;
+
+//!@brief Misc feature bit definitions
+enum
+{
+    kFlexSpiMiscOffset_DiffClkEnable            = 0, //!< Bit for Differential clock enable
+    kFlexSpiMiscOffset_Ck2Enable                = 1, //!< Bit for CK2 enable
+    kFlexSpiMiscOffset_ParallelEnable           = 2, //!< Bit for Parallel mode enable
+    kFlexSpiMiscOffset_WordAddressableEnable    = 3, //!< Bit for Word Addressable enable
+    kFlexSpiMiscOffset_SafeConfigFreqEnable     = 4, //!< Bit for Safe Configuration Frequency enable
+    kFlexSpiMiscOffset_PadSettingOverrideEnable = 5, //!< Bit for Pad setting override enable
+    kFlexSpiMiscOffset_DdrModeEnable            = 6, //!< Bit for DDR clock confiuration indication.
+};
+
+//!@brief Flash Type Definition
+enum
+{
+    kFlexSpiDeviceType_SerialNOR    = 1,    //!< Flash devices are Serial NOR
+    kFlexSpiDeviceType_SerialNAND   = 2,    //!< Flash devices are Serial NAND
+    kFlexSpiDeviceType_SerialRAM    = 3,    //!< Flash devices are Serial RAM/HyperFLASH
+    kFlexSpiDeviceType_MCP_NOR_NAND = 0x12, //!< Flash device is MCP device, A1 is Serial NOR, A2 is Serial NAND
+    kFlexSpiDeviceType_MCP_NOR_RAM  = 0x13, //!< Flash deivce is MCP device, A1 is Serial NOR, A2 is Serial RAMs
+};
+
+//!@brief Flash Pad Definitions
+enum
+{
+    kSerialFlash_1Pad  = 1,
+    kSerialFlash_2Pads = 2,
+    kSerialFlash_4Pads = 4,
+    kSerialFlash_8Pads = 8,
+};
+
+//!@brief FlexSPI LUT Sequence structure
+typedef struct __attribute__((packed, scalar_storage_order("little-endian"))) _lut_sequence
+{
+    uint8_t seqNum; //!< Sequence Number, valid number: 1-16
+    uint8_t seqId;  //!< Sequence Index, valid number: 0-15
+    uint16_t reserved;
+} flexspi_lut_seq_t;
+
+//!@brief Flash Configuration Command Type
+enum
+{
+    kDeviceConfigCmdType_Generic,    //!< Generic command, for example: configure dummy cycles, drive strength, etc
+    kDeviceConfigCmdType_QuadEnable, //!< Quad Enable command
+    kDeviceConfigCmdType_Spi2Xpi,    //!< Switch from SPI to DPI/QPI/OPI mode
+    kDeviceConfigCmdType_Xpi2Spi,    //!< Switch from DPI/QPI/OPI to SPI mode
+    kDeviceConfigCmdType_Spi2NoCmd,  //!< Switch to 0-4-4/0-8-8 mode
+    kDeviceConfigCmdType_Reset,      //!< Reset device command
+};
+
+//!@brief FlexSPI Memory Configuration Block
+typedef struct __attribute__((packed, scalar_storage_order("little-endian"))) _FlexSPIConfig
+{
+    uint32_t tag;               //!< [0x000-0x003] Tag, fixed value 0x42464346UL
+    uint32_t version;           //!< [0x004-0x007] Version,[31:24] -'V', [23:16] - Major, [15:8] - Minor, [7:0] - bugfix
+    uint32_t reserved0;         //!< [0x008-0x00b] Reserved for future use
+    uint8_t readSampleClkSrc;   //!< [0x00c-0x00c] Read Sample Clock Source, valid value: 0/1/3
+    uint8_t csHoldTime;         //!< [0x00d-0x00d] CS hold time, default value: 3
+    uint8_t csSetupTime;        //!< [0x00e-0x00e] CS setup time, default value: 3
+    uint8_t columnAddressWidth; //!< [0x00f-0x00f] Column Address with, for HyperBus protocol, it is fixed to 3, For
+    //! Serial NAND, need to refer to datasheet
+    uint8_t deviceModeCfgEnable; //!< [0x010-0x010] Device Mode Configure enable flag, 1 - Enable, 0 - Disable
+    uint8_t deviceModeType; //!< [0x011-0x011] Specify the configuration command type:Quad Enable, DPI/QPI/OPI switch,
+    //! Generic configuration, etc.
+    uint16_t waitTimeCfgCommands; //!< [0x012-0x013] Wait time for all configuration commands, unit: 100us, Used for
+    //! DPI/QPI/OPI switch or reset command
+    flexspi_lut_seq_t deviceModeSeq; //!< [0x014-0x017] Device mode sequence info, [7:0] - LUT sequence id, [15:8] - LUt
+    //! sequence number, [31:16] Reserved
+    uint32_t deviceModeArg;    //!< [0x018-0x01b] Argument/Parameter for device configuration
+    uint8_t configCmdEnable;   //!< [0x01c-0x01c] Configure command Enable Flag, 1 - Enable, 0 - Disable
+    uint8_t configModeType[3]; //!< [0x01d-0x01f] Configure Mode Type, similar as deviceModeTpe
+    flexspi_lut_seq_t
+        configCmdSeqs[3]; //!< [0x020-0x02b] Sequence info for Device Configuration command, similar as deviceModeSeq
+    uint32_t reserved1;   //!< [0x02c-0x02f] Reserved for future use
+    uint32_t configCmdArgs[3];     //!< [0x030-0x03b] Arguments/Parameters for device Configuration commands
+    uint32_t reserved2;            //!< [0x03c-0x03f] Reserved for future use
+    uint32_t controllerMiscOption; //!< [0x040-0x043] Controller Misc Options, see Misc feature bit definitions for more
+    //! details
+    uint8_t deviceType;    //!< [0x044-0x044] Device Type:  See Flash Type Definition for more details
+    uint8_t sflashPadType; //!< [0x045-0x045] Serial Flash Pad Type: 1 - Single, 2 - Dual, 4 - Quad, 8 - Octal
+    uint8_t serialClkFreq; //!< [0x046-0x046] Serial Flash Frequencey, device specific definitions, See System Boot
+    //! Chapter for more details
+    uint8_t lutCustomSeqEnable; //!< [0x047-0x047] LUT customization Enable, it is required if the program/erase cannot
+    //! be done using 1 LUT sequence, currently, only applicable to HyperFLASH
+    uint32_t reserved3[2];           //!< [0x048-0x04f] Reserved for future use
+    uint32_t sflashA1Size;           //!< [0x050-0x053] Size of Flash connected to A1
+    uint32_t sflashA2Size;           //!< [0x054-0x057] Size of Flash connected to A2
+    uint32_t sflashB1Size;           //!< [0x058-0x05b] Size of Flash connected to B1
+    uint32_t sflashB2Size;           //!< [0x05c-0x05f] Size of Flash connected to B2
+    uint32_t csPadSettingOverride;   //!< [0x060-0x063] CS pad setting override value
+    uint32_t sclkPadSettingOverride; //!< [0x064-0x067] SCK pad setting override value
+    uint32_t dataPadSettingOverride; //!< [0x068-0x06b] data pad setting override value
+    uint32_t dqsPadSettingOverride;  //!< [0x06c-0x06f] DQS pad setting override value
+    uint32_t timeoutInMs;            //!< [0x070-0x073] Timeout threshold for read status command
+    uint32_t commandInterval;        //!< [0x074-0x077] CS deselect interval between two commands
+    uint16_t dataValidTime[2]; //!< [0x078-0x07b] CLK edge to data valid time for PORT A and PORT B, in terms of 0.1ns
+    uint16_t busyOffset;       //!< [0x07c-0x07d] Busy offset, valid value: 0-31
+    uint16_t busyBitPolarity;  //!< [0x07e-0x07f] Busy flag polarity, 0 - busy flag is 1 when flash device is busy, 1 -
+    //! busy flag is 0 when flash device is busy
+    uint32_t lookupTable[64];           //!< [0x080-0x17f] Lookup table holds Flash command sequences
+    flexspi_lut_seq_t lutCustomSeq[12]; //!< [0x180-0x1af] Customizable LUT Sequences
+    uint32_t reserved4[4];              //!< [0x1b0-0x1bf] Reserved for future use
+} flexspi_mem_config_t;
+
+/*  */
+#define NOR_CMD_INDEX_READ        CMD_INDEX_READ        //!< 0
+#define NOR_CMD_INDEX_READSTATUS  CMD_INDEX_READSTATUS  //!< 1
+#define NOR_CMD_INDEX_WRITEENABLE CMD_INDEX_WRITEENABLE //!< 2
+#define NOR_CMD_INDEX_ERASESECTOR 3                     //!< 3
+#define NOR_CMD_INDEX_PAGEPROGRAM CMD_INDEX_WRITE       //!< 4
+#define NOR_CMD_INDEX_CHIPERASE   5                     //!< 5
+#define NOR_CMD_INDEX_DUMMY       6                     //!< 6
+#define NOR_CMD_INDEX_ERASEBLOCK  7                     //!< 7
+
+#define NOR_CMD_LUT_SEQ_IDX_READ CMD_LUT_SEQ_IDX_READ //!< 0  READ LUT sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_READSTATUS \
+    CMD_LUT_SEQ_IDX_READSTATUS //!< 1  Read Status LUT sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_READSTATUS_XPI \
+    2 //!< 2  Read status DPI/QPI/OPI sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_WRITEENABLE \
+    CMD_LUT_SEQ_IDX_WRITEENABLE //!< 3  Write Enable sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_WRITEENABLE_XPI \
+    4 //!< 4  Write Enable DPI/QPI/OPI sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_ERASESECTOR 5 //!< 5  Erase Sector sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_ERASEBLOCK  8 //!< 8 Erase Block sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_PAGEPROGRAM \
+    CMD_LUT_SEQ_IDX_WRITE                //!< 9  Program sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_CHIPERASE 11 //!< 11 Chip Erase sequence in lookupTable id stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_READ_SFDP 13 //!< 13 Read SFDP sequence in lookupTable id stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_RESTORE_NOCMD \
+    14 //!< 14 Restore 0-4-4/0-8-8 mode sequence id in lookupTable stored in config block
+#define NOR_CMD_LUT_SEQ_IDX_EXIT_NOCMD \
+    15 //!< 15 Exit 0-4-4/0-8-8 mode sequence id in lookupTable stored in config blobk
+
+/*
+ *  Serial NOR configuration block
+ */
+typedef struct __attribute__((packed, scalar_storage_order("little-endian"))) _flexspi_nor_config 
+{
+    flexspi_mem_config_t memConfig; //!< Common memory configuration info via FlexSPI
+    uint32_t pageSize;              //!< Page size of Serial NOR
+    uint32_t sectorSize;            //!< Sector size of Serial NOR
+    uint8_t ipcmdSerialClkFreq;     //!< Clock frequency for IP command
+    uint8_t isUniformBlockSize;     //!< Sector/Block size is the same
+    uint8_t reserved0[2];           //!< Reserved for future use
+    uint8_t serialNorType;          //!< Serial NOR Flash type: 0/1/2/3
+    uint8_t needExitNoCmdMode;      //!< Need to exit NoCmd mode before other IP command
+    uint8_t halfClkForNonReadCmd;   //!< Half the Serial Clock for non-read command: true/false
+    uint8_t needRestoreNoCmdMode;   //!< Need to Restore NoCmd mode after IP commmand execution
+    uint32_t blockSize;             //!< Block size
+    uint32_t reserve2[11];          //!< Reserved for future use
+} flexspi_nor_config_t;
+
+#endif /* __FLEXSPI_NOR_CONFIG__ */

diff --git a/flash_confs.c b/flash_confs.c
new file mode 100644 (file)
index 0000000..d43af8e
--- /dev/null
+++ b/flash_confs.c
@@ -0,0 +1,30 @@
+#include "flash.h"
+#include "flash_confs.h"
+static const flash_configs configs[] = {
+       { .config = {
+               .memConfig = {
+                       .tag              = FLEXSPI_CFG_BLK_TAG,
+                       .version          = FLEXSPI_CFG_BLK_VERSION,
+                       .readSampleClkSrc = kFlexSPIReadSampleClk_LoopbackFromDqsPad,
+                       .csHoldTime       = 3u,
+                       .csSetupTime      = 3u,
+                       .sflashPadType    = kSerialFlash_4Pads,
+                       .serialClkFreq    = kFlexSpiSerialClk_100MHz,
+                       .sflashA1Size     = 8u * 1024u * 1024u,
+                       .lookupTable = {
+                               // Read LUTs
+                               FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0xEB, RADDR_SDR, FLEXSPI_4PAD, 0x18),
+                               FLEXSPI_LUT_SEQ(DUMMY_SDR, FLEXSPI_4PAD, 0x06, READ_SDR, FLEXSPI_4PAD, 0x04),
+                       },
+               },
+               .pageSize           = 256u,
+               .sectorSize         = 4u * 1024u,
+               .blockSize          = 64u * 1024u,
+               .isUniformBlockSize = false,
+       }, .name = "imxrt1060" },
+       {}
+};
+
+const flash_configs * get_flash_confs(){
+       return configs;
+}
\ No newline at end of file

diff --git a/flash_confs.h b/flash_confs.h
new file mode 100644 (file)
index 0000000..7baa18c
--- /dev/null
+++ b/flash_confs.h
@@ -0,0 +1,8 @@
+#ifndef __FLASH_CONFIGS__
+#define __FLASH_CONFIGS__
+       typedef struct _flash_configs {
+               flexspi_nor_config_t config;
+               char name[32];
+       } flash_configs;
+       const flash_configs * get_flash_confs();
+#endif /* __FLASH_CONFIGS__*/
\ No newline at end of file

diff --git a/main.c b/main.c
new file mode 100644 (file)
index 0000000..0e12c40
--- /dev/null
+++ b/main.c
@@ -0,0 +1,142 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include "flash.h"
+#include "flash_confs.h"
+
+size_t get_name_match(const flash_configs* , const char * name);
+void help(int code);
+void prepend(FILE * fno, size_t offset);
+int main(int argc, char *argv[]){
+
+       char name[32];
+       char fname[32];
+       int opt;
+       size_t index = 0;
+       size_t padding = 0x1000; // default offset for nor
+       size_t bin = 0;
+       FILE * fnum;
+       const flash_configs * configs = get_flash_confs();
+       const flexspi_nor_config_t * config;
+       while ((opt = getopt(argc, argv, "p:n:o:b:")) != -1)
+       {
+               errno = 0;
+               switch (opt)
+               {
+                       case 'p':
+                               padding = strtol(optarg, NULL, 0);
+                               if (errno) {
+                                       printf("Invalid value for -%c.\n", opt);
+                                               help(-3);
+                               }
+                               break;
+                       case 'n':
+                               strncpy(name,optarg,32);
+                               break;
+                       case 'o':
+                               strncpy(fname,optarg,32);
+                               break;
+                       case 'b':
+                               bin = strtol(optarg, NULL, 0);
+                               if (errno) {
+                                       printf("Invalid value for -%c.\n", opt);
+                                               help(-3);
+                               }
+                               break;
+                       case 'h':
+                               help(0);
+                               break;
+                       default:
+                               help(-3);
+                               break;
+               }
+       }
+
+       if(!strnlen(fname,32))
+               puts("Need an output file name.");
+       if(!strnlen(name,32))
+               puts("Need a flash config name.");
+       if(!strnlen(name,32) || !strnlen(fname,32))
+               help(-3);
+
+       index = get_name_match(configs,name);
+       if(index == -1){
+               printf("No match found for %s!\nExiting...\n",name);
+               exit(-2);
+       }
+       printf("Match found using %s flash config.\n",configs[index].name);
+
+       config = &configs[index].config;
+
+       fnum = fopen(fname,"wb+");
+       if(!fnum){
+               printf("Can't open %s for writing!\nExiting...\n",fname);
+               exit(-1);
+       }
+
+       fwrite(config,sizeof(flexspi_nor_config_t),1,fnum);
+       for(size_t i = sizeof(flexspi_nor_config_t); i < padding;i++)
+               fputc(0xff,fnum);
+       if(bin)
+               prepend(fnum,bin);
+       fclose(fnum);
+       puts("Done!");
+       return 0;
+}
+
+size_t get_name_match(const flash_configs* configs, const char * name){
+       size_t i = 0;
+       while(*configs[i].name){
+               if(strncmp(configs[i].name,name,32) == 0)
+                       return i;
+               i++;
+       }
+       return -1;
+}
+void prepend(FILE * fno, size_t offset){
+       FILE * SPL, * uboot;
+       char * buf;
+       size_t sz;
+       uboot = fopen("u-boot.img","r");
+       if(!uboot){
+               puts("Can't open u-boot.img for reading!\nExiting...");
+               fclose(fno);
+               exit(-1);
+       }
+       SPL = fopen("SPL","r");
+       if(!SPL){
+               puts("Can't open SPL for reading!\nExiting...");
+               fclose(uboot);
+               fclose(fno);
+               exit(-1);
+       }
+       fseek(SPL, 0, SEEK_END);
+       sz = ftell(SPL);
+       buf = malloc(sz);
+       rewind(SPL);
+       fread(buf,sz,1,SPL);
+       fwrite(buf,sz,1,fno);
+
+       for(size_t i = ftell(fno); i < offset;i++)
+               fputc(0xff,fno);
+
+       fseek(uboot, 0, SEEK_END);
+       sz = ftell(uboot);
+       buf = realloc(buf, sz);
+       rewind(uboot);
+       fread(buf,sz,1,uboot);
+       fwrite(buf,sz,1,fno);
+       free(buf);
+
+       fclose(SPL);
+       fclose(uboot);
+}
+
+void help(int code){
+       puts("help");
+       exit(code);
+}
\ No newline at end of file

diff --git a/mk.sh b/mk.sh
new file mode 100755 (executable)
index 0000000..b7f71bc
--- /dev/null
+++ b/mk.sh
@@ -0,0 +1 @@
+gcc *.c -o test
\ No newline at end of file