有人写过bmm文件，用过data2mem工具吗

daxuelangren

bmm文件用于描述memory结构，data2mem读取bmm信息，可以直接修改bitstream，更新memory初始化内容。现在一个1kx48bit的rom有1kx36+1k16bit的rom组成，但是不知道怎么写这个设计的BMM文件。
我想这么来写的，但是貌似不对啊，data2mem的文档看了几遍了，还是搞不定啊。。。

ADDRESS_SPACE inst RAMB16 [0x00000000:0x000017FF]
   BUS_BLOCK
     top/rom1024/U0/xst_blk_mem_generator/gnativebmg.native_blk_mem_gen/valid.cstr/ramloop[1].ram.r/v6_init.ram/SP.SIMPLE_PRIM36.ram [47:16] PLACED=X2Y33;
     top/rom1024/U0/xst_blk_mem_generator/gnativebmg.native_blk_mem_gen/valid.cstr/ramloop[0].ram.r/v6_init.ram/SP.SIMPLE_PRIM18.ram [15:0] PLACED=X2Y64;
   END_BUS_BLOCK;
END_ADDRESS_SPACE;

solarwafer

在EDK中实用才行。

solarwafer

在EDK中实用才行。

daxuelangren

呃，我的就是一个单独的硬件设计，唉，那就没办法了。。。
看了那么多文档，感觉也是可以的解决的，有两种方法解决这个问题，不过到最后还总是差一点的感觉，纠结了很长时间了。。。



回复 3# solarwafer

daxuelangren

你有在设计中直接实例化primitive BRAM吗？ 比如RAMB18E1
我在data2mem文档里看到，如果自己用primitive BRAM构建RAM块，工具会自动生成BMM文件，这样我只要提供初始化数据，就可以用data2mem更新bit stream了。

我看到文档里面有个例子，可以在代码里初始化这个BRAM块，但是不能自动生成bmm文件，如果用INIT_FILE应该就可以了。
不过不知道INIT_FILE里面要求的文件格式，试着用mif，coe以及mem文件，都不好使。。。

RAMB18E1 #(
// Colision check: Values ("ALL", "WARNING_ONLY", "GENERATE_X_ONLY" or "NONE")
.SIM_COLLISION_CHECK("ALL"),
// DOA_REG, DOB_REG: Optional output register (0 or 1)
.DOA_REG(0),
.DOB_REG(0),
// INITP_00 to INITP_07: Initial contents of parity memory array
//.INITP_00(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INITP_01(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INITP_02(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INITP_03(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INITP_04(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INITP_05(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INITP_06(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INITP_07(256'h0000000000000000000000000000000000000000000000000000000000000000),
//INIT_00 to INIT_3F: Initial contents of data memory array
//.INIT_00(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_01(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_02(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_03(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_04(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_05(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_06(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_07(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_08(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_09(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_0A(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_0B(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_0C(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_0D(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_0E(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_0F(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_10(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_11(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_12(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_13(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_14(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_15(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_16(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_17(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_18(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_19(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_1A(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_1B(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_1C(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_1D(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_1E(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_1F(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_20(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_21(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_22(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_23(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_24(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_25(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_26(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_27(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_28(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_29(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_2A(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_2B(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_2C(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_2D(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_2E(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_2F(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_30(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_31(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_32(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_33(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_34(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_35(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_36(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_37(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_38(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_39(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_3A(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_3B(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_3C(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_3D(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_3E(256'h0000000000000000000000000000000000000000000000000000000000000000),
//.INIT_3F(256'h0000000000000000000000000000000000000000000000000000000000000000),
// INIT_A, INIT_B: Initial values on output ports
.INIT_A(18'h00000),
.INIT_B(18'h00000),
.INIT_FILE("file.mem"), // RAM init file
//.INIT_FILE("NONE"),
.RAM_MODE("TDP"), // "SDP" or "TDP"
.RDADDR_COLLISION_HWCONFIG("DELAYED_WRITE"), // "PERFORMANCE" or
// "DELAYED_WRITE"
// READ_WIDTH_A/B, WRITE_WIDTH_A/B: Read/write width per port
.READ_WIDTH_A(18), // 0,1,2,4,9,18,36
.READ_WIDTH_B(18), // 0,1,2,4,9,18
.WRITE_WIDTH_A(18), // 0,1,2,4,9,18
.WRITE_WIDTH_B(18), // 0,1,2,4,9,18,36
// RSTREG_PRIORITY_A, RSTREG_PRIORITY_B: Reset or enable priority ("RSTREG" or "REGCE")
.RSTREG_PRIORITY_A("RSTREG"),
.RSTREG_PRIORITY_B("RSTREG"),
// SRVAL_A, SRVAL_B: Set/reset value for output
.SRVAL_A(18'h00000),
.SRVAL_B(18'h00000),
// WriteMode: Value on output upon a write ("WRITE_FIRST", "READ_FIRST", or "NO_CHANGE")
.WRITE_MODE_A("WRITE_FIRST"),
.WRITE_MODE_B("WRITE_FIRST")
)
RAMB18E1_inst (
// Port A Data: 16-bit (each) output: Port A data
.DOADO(data_outA), // 16-bit output: A port data/LSB data output
.DOPADOP(DOPADOP), // 2-bit output: A port parity/LSB parity output
// Port B Data: 16-bit (each) output: Port B data
.DOBDO(data_outB), // 16-bit output: B port data/MSB data output
.DOPBDOP(DOPBDOP), // 2-bit output: B port parity/MSB parity output
// Port A Address/Control Signals: 14-bit (each) input: Port A address and control signals (read port
// when RAM_MODE="SDP")
.ADDRARDADDR(addrA), // 14-bit input: A port address/Read address input
.CLKARDCLK(clk), // 1-bit input: A port clock/Read clock input
.ENARDEN(ENARDEN), // 1-bit input: A port enable/Read enable input
.REGCEAREGCE(REGCEAREGCE), // 1-bit input: A port register enable/Register enable input
.RSTRAMARSTRAM(RSTRAMARSTRAM), // 1-bit input: A port set/reset input
.RSTREGARSTREG(RSTREGARSTREG), // 1-bit input: A port register set/reset input
.WEA(WEA), // 2-bit input: A port write enable input
// Port A Data: 16-bit (each) input: Port A data
.DIADI(data_inA), // 16-bit input: A port data/LSB data input
.DIPADIP(DIPADIP), // 2-bit input: A port parity/LSB parity input

// Port B Address/Control Signals: 14-bit (each) input: Port B address and control signals (write port
// when RAM_MODE="SDP")
.ADDRBWRADDR(addrB), // 14-bit input: B port address/Write address input
.CLKBWRCLK(clk), // 1-bit input: B port clock/Write clock input
.ENBWREN(ENBWREN), // 1-bit input: B port enable/Write enable input
.REGCEB(REGCEB), // 1-bit input: B port register enable input
.RSTRAMB(RSTRAMB), // 1-bit input: B port set/reset input
.RSTREGB(RSTREGB), // 1-bit input: B port register set/reset input
.WEBWE(WEBWE), // 4-bit input: B port write enable/Write enable input

// Port B Data: 16-bit (each) input: Port B data
.DIBDI(data_inB), // 16-bit input: B port data/MSB data input
.DIPBDIP(DIPBDIP) // 2-bit input: B port parity/MSB parity input
);

回复 2# solarwafer

solarwafer

我以前试过，应为不清楚coe文件与生成的memory 的Init_file 的对应关系，很难自己弄，你可以突破一下。

daxuelangren

我看文档上写的是用mem格式，你试过coe格式。。。
唉，知道的都试了个遍，总也不对，蛋都碎了。。。

回复 6# solarwafer

gordon_m

没错。有人写过(我写过)bmm独立使用data2mem，花了不少功夫，成功了。

提醒：
1) data2mem有dump .bit功能，通过这个功能可以把数据dump出来以判断自己弄的字节顺序。
2) 我是软件编译生成bin, 自己写个工具转换.bin成.mem, .coe, .mif 3种文件。.mem给data2mem用。.coe给coregen用，.mif Xilinx block ram仿真模型用。
3) .bmm反标功能必须要用，ISE反标之后，生成的是xx_bd.bmm。
4) Using Data2Mem in a Non-EDK design (data2mem_standalone.pdf)这篇pdf必须要看透。
5) FPGA editor必须用的到，把instance明确的找到，然后写到.bmm
5) 如果不知道字节数据对应顺序，调试方法 a) 生成block ram：coregen + .coe生成.ngc网表 b) 用.ngc生成.bit 同时反标生成xx_bd.bmm c) data2mem dump出来，看看字节序是否对。

其实比较复杂，一时半回说不清楚，祝你好运。

daxuelangren

多谢你的建议，试了一个简单的例子，确实可以，只是我有大量的ROM，需要批处理才行，通过FPGA editor读取instance name这一步没法批处理。。。

回复 8# gordon_m

greatwind

ROM多的话，实现之前用在UCF文件中直接做好约束就可以。