Increase BRAM in spartan6

Reference :

http://www.xilinx.com/support/answers/52063.htm

http://www.xilinx.com/support/answers/16536.htm

http://forums.xilinx.com/xlnx/attachments/xlnx/EDK/33007/1/%C2%B5Blaze%20Project-Migration%20from%20ISE%2012%20to%20ISE%2014%20Forum.pdf

在移植cf r/w的程式到spartan6的時後發現spartan 的bram只能到64kb. 但是要寫cf卡至少需要128kb,後來google了一下發現有別的路徑可以繞一下

在XPS中把bram調成128k會出現下列的錯誤訊息表示spartan6只用調到64k

在右邊加入一個block ram,兩個bram control,可能因為版本的關係所以我的名稱跟reference不一樣

把接線接上

然後把address填入,注意兩個bram address需要連續

接著generate netlist

在SDK中加入xilfatfs library後generate linked script 會出現如預期的bram不夠訊息

打開lscript.ld 把原本的

microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl : ORIGIN = 0x00000050, LENGTH = 0x0000FFB0

bram_cntlr_0_bram_cntlr_1 : ORIGIN = 0x00010000, LENGTH = 0x00010000

改成

microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl : ORIGIN = 0x00000050, LENGTH = 0x0001FFB0

_STACK_SIZE = DEFINED(_STACK_SIZE) ? _STACK_SIZE : 0x1D4C0; _HEAP_SIZE = DEFINED(_HEAP_SIZE) ? _HEAP_SIZE : 0x1D4C0; /* Define Memories in the system */ MEMORY { microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl : ORIGIN = 0x00000050, LENGTH = 0x0001FFB0 //bram_cntlr_0_bram_cntlr_1 : ORIGIN = 0x00010000, LENGTH = 0x00010000 ddr3_sdram_S_AXI_BASEADDR : ORIGIN = 0xA4000000, LENGTH = 0x04000000 } /* Specify the default entry point to the program */ ENTRY(_start) /* Define the sections, and where they are mapped in memory */ SECTIONS { .vectors.reset 0x00000000 : { *(.vectors.reset) } .vectors.sw_exception 0x00000008 : { *(.vectors.sw_exception) } .vectors.interrupt 0x00000010 : { *(.vectors.interrupt) } .vectors.hw_exception 0x00000020 : { *(.vectors.hw_exception) } .text : { *(.text) *(.text.*) *(.gnu.linkonce.t.*) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .init : { KEEP (*(.init)) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .fini : { KEEP (*(.fini)) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .ctors : { __CTOR_LIST__ = .; ___CTORS_LIST___ = .; KEEP (*crtbegin.o(.ctors)) KEEP (*(EXCLUDE_FILE(*crtend.o) .ctors)) KEEP (*(SORT(.ctors.*))) KEEP (*(.ctors)) __CTOR_END__ = .; ___CTORS_END___ = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .dtors : { __DTOR_LIST__ = .; ___DTORS_LIST___ = .; KEEP (*crtbegin.o(.dtors)) KEEP (*(EXCLUDE_FILE(*crtend.o) .dtors)) KEEP (*(SORT(.dtors.*))) KEEP (*(.dtors)) PROVIDE(__DTOR_END__ = .); PROVIDE(___DTORS_END___ = .); } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .rodata : { __rodata_start = .; *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) __rodata_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .sdata2 : { . = ALIGN(8); __sdata2_start = .; *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*) . = ALIGN(8); __sdata2_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .sbss2 : { __sbss2_start = .; *(.sbss2) *(.sbss2.*) *(.gnu.linkonce.sb2.*) __sbss2_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .data : { . = ALIGN(4); __data_start = .; *(.data) *(.data.*) *(.gnu.linkonce.d.*) __data_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .got : { *(.got) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .got1 : { *(.got1) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .got2 : { *(.got2) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .eh_frame : { *(.eh_frame) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .jcr : { *(.jcr) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .gcc_except_table : { *(.gcc_except_table) } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .sdata : { . = ALIGN(8); __sdata_start = .; *(.sdata) *(.sdata.*) *(.gnu.linkonce.s.*) __sdata_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .sbss (NOLOAD) : { . = ALIGN(4); __sbss_start = .; *(.sbss) *(.sbss.*) *(.gnu.linkonce.sb.*) . = ALIGN(8); __sbss_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .tdata : { __tdata_start = .; *(.tdata) *(.tdata.*) *(.gnu.linkonce.td.*) __tdata_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .tbss : { __tbss_start = .; *(.tbss) *(.tbss.*) *(.gnu.linkonce.tb.*) __tbss_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl .bss (NOLOAD) : { . = ALIGN(4); __bss_start = .; *(.bss) *(.bss.*) *(.gnu.linkonce.b.*) *(COMMON) . = ALIGN(4); __bss_end = .; } > microblaze_0_i_bram_ctrl_microblaze_0_d_bram_ctrl _SDA_BASE_ = __sdata_start + ((__sbss_end - __sdata_start) / 2 ); _SDA2_BASE_ = __sdata2_start + ((__sbss2_end - __sdata2_start) / 2 ); /* Generate Stack and Heap definitions */ .heap (NOLOAD) : { . = ALIGN(8); _heap = .; _heap_start = .; . += _HEAP_SIZE; _heap_end = .; } > ddr3_sdram_S_AXI_BASEADDR .stack (NOLOAD) : { _stack_end = .; . += _STACK_SIZE; . = ALIGN(8); _stack = .; __stack = _stack; } > ddr3_sdram_S_AXI_BASEADDR _end = .; }

SAVE以後自動產生一個新的elf檔,空間不足的error dispearrrrrrr !

如果之後ISE generate new bit產生

NgdBuild:989 - Failed to process BMM information edkBmmFile.bmm

這個error,則清掉ise與xps的file在重新產生

我在ml605上模擬這個環境

結果在SDK上program FPGA的時候出現下列錯誤

表示bmm file也需要被更改

在ISE上把edkBmmFile_bd.bmm 打開,把原本的兩個RAM合併成一個,並把ADDRESS範圍加大

ADDRESS_MAP microblaze_0 MICROBLAZE-LE 100 /////////////////////////////////////////////////////////////////////////////// // // Processor 'microblaze_0' address space 'microblaze_0_bram_block_combined' 0x00000000:0x0000FFFF (64 KBytes). // /////////////////////////////////////////////////////////////////////////////// ADDRESS_SPACE microblaze_0_bram_block_combined RAMB32 [0x00000000:0x0001FFFF] BUS_BLOCK u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_0 RAMB32 [31:30] [0:16383] INPUT = microblaze_0_bram_block_combined_0.mem PLACED = X6Y19; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_1 RAMB32 [29:28] [0:16383] INPUT = microblaze_0_bram_block_combined_1.mem PLACED = X7Y17; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_2 RAMB32 [27:26] [0:16383] INPUT = microblaze_0_bram_block_combined_2.mem PLACED = X3Y15; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_3 RAMB32 [25:24] [0:16383] INPUT = microblaze_0_bram_block_combined_3.mem PLACED = X6Y14; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_4 RAMB32 [23:22] [0:16383] INPUT = microblaze_0_bram_block_combined_4.mem PLACED = X4Y15; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_5 RAMB32 [21:20] [0:16383] INPUT = microblaze_0_bram_block_combined_5.mem PLACED = X3Y16; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_6 RAMB32 [19:18] [0:16383] INPUT = microblaze_0_bram_block_combined_6.mem PLACED = X4Y12; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_7 RAMB32 [17:16] [0:16383] INPUT = microblaze_0_bram_block_combined_7.mem PLACED = X4Y16; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_8 RAMB32 [15:14] [0:16383] INPUT = microblaze_0_bram_block_combined_8.mem PLACED = X4Y23; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_9 RAMB32 [13:12] [0:16383] INPUT = microblaze_0_bram_block_combined_9.mem PLACED = X6Y20; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_10 RAMB32 [11:10] [0:16383] INPUT = microblaze_0_bram_block_combined_10.mem PLACED = X6Y16; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_11 RAMB32 [9:8] [0:16383] INPUT = microblaze_0_bram_block_combined_11.mem PLACED = X4Y10; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_12 RAMB32 [7:6] [0:16383] INPUT = microblaze_0_bram_block_combined_12.mem PLACED = X4Y21; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_13 RAMB32 [5:4] [0:16383] INPUT = microblaze_0_bram_block_combined_13.mem PLACED = X4Y22; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_14 RAMB32 [3:2] [0:16383] INPUT = microblaze_0_bram_block_combined_14.mem PLACED = X3Y17; u_microblaze/microblaze_0_bram_block/microblaze_0_bram_block/ramb36e1_15 RAMB32 [1:0] [0:16383] INPUT = microblaze_0_bram_block_combined_15.mem PLACED = X5Y12; END_BUS_BLOCK; BUS_BLOCK u_microblaze/bram_block_0/bram_block_0/ramb36e1_0 RAMB32 [31:30] [0:16383] INPUT = bram_block_0_combined_0.mem PLACED = X5Y17; u_microblaze/bram_block_0/bram_block_0/ramb36e1_1 RAMB32 [29:28] [0:16383] INPUT = bram_block_0_combined_1.mem PLACED = X4Y20; u_microblaze/bram_block_0/bram_block_0/ramb36e1_2 RAMB32 [27:26] [0:16383] INPUT = bram_block_0_combined_2.mem PLACED = X4Y14; u_microblaze/bram_block_0/bram_block_0/ramb36e1_3 RAMB32 [25:24] [0:16383] INPUT = bram_block_0_combined_3.mem PLACED = X5Y14; u_microblaze/bram_block_0/bram_block_0/ramb36e1_4 RAMB32 [23:22] [0:16383] INPUT = bram_block_0_combined_4.mem PLACED = X5Y15; u_microblaze/bram_block_0/bram_block_0/ramb36e1_5 RAMB32 [21:20] [0:16383] INPUT = bram_block_0_combined_5.mem PLACED = X4Y17; u_microblaze/bram_block_0/bram_block_0/ramb36e1_6 RAMB32 [19:18] [0:16383] INPUT = bram_block_0_combined_6.mem PLACED = X4Y13; u_microblaze/bram_block_0/bram_block_0/ramb36e1_7 RAMB32 [17:16] [0:16383] INPUT = bram_block_0_combined_7.mem PLACED = X5Y16; u_microblaze/bram_block_0/bram_block_0/ramb36e1_8 RAMB32 [15:14] [0:16383] INPUT = bram_block_0_combined_8.mem PLACED = X4Y24; u_microblaze/bram_block_0/bram_block_0/ramb36e1_9 RAMB32 [13:12] [0:16383] INPUT = bram_block_0_combined_9.mem PLACED = X5Y20; u_microblaze/bram_block_0/bram_block_0/ramb36e1_10 RAMB32 [11:10] [0:16383] INPUT = bram_block_0_combined_10.mem PLACED = X6Y15; u_microblaze/bram_block_0/bram_block_0/ramb36e1_11 RAMB32 [9:8] [0:16383] INPUT = bram_block_0_combined_11.mem PLACED = X4Y11; u_microblaze/bram_block_0/bram_block_0/ramb36e1_12 RAMB32 [7:6] [0:16383] INPUT = bram_block_0_combined_12.mem PLACED = X5Y21; u_microblaze/bram_block_0/bram_block_0/ramb36e1_13 RAMB32 [5:4] [0:16383] INPUT = bram_block_0_combined_13.mem PLACED = X5Y22; u_microblaze/bram_block_0/bram_block_0/ramb36e1_14 RAMB32 [3:2] [0:16383] INPUT = bram_block_0_combined_14.mem PLACED = X3Y18; u_microblaze/bram_block_0/bram_block_0/ramb36e1_15 RAMB32 [1:0] [0:16383] INPUT = bram_block_0_combined_15.mem PLACED = X5Y13; END_BUS_BLOCK; END_ADDRESS_SPACE; END_ADDRESS_MAP;

這邊要注意的是如果重新產生BIT file,bmm又會被改寫成原本未合併的,最好複製一份更名,在SDK上就用更名過的

在xilinx的QA上說產生download.bit file要在tcl下使用standalone data2mem,但是我在SDK上用Programm FPGA也可以用