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dm8168的ezskd的能否取得源码

Siment Lin
Prodigy 220 points


dm8168的从ti官网下载ezsdk，里面很多模块是没有源码的，比如Media Controller firmwares。

 能否通过签订NDA等方式，进一步取得源码？

  • 0
    TI__Guru**** 155073 points

    你好，

    对于EZSDK，Media Controller firmwares不提供源码支持。

  • 0 回复 Chris Meng
    Prodigy 220 points

    我主要是想改内存用。因为发现M3的解码内存可能不够，总是返回错误说资源不足。

      wiki里面讲了修改内存的方法，http://processors.wiki.ti.com/index.php/EZSDK_Memory_Map#Linux_applications_for_OMX

      我按照说明，成功的扩大了一些内存，如MC_HDVICP2_INT_HEAP_CACHED、IPC_SR_MC_HDVICP2_HDVPSS，但是有一些内存我修改不成功，主要是标记为reserved的和dsp的。

       我想问，是否wiki中内存图，红色的也就是Memory Reserved for Media Controller Executables的是否不能改，是不是一定要有Media Controller firmwares的源码，才能修改？

       下面是wiki中复制过来的内存图，但是没有颜色了。原图可以在wiki原网址上看。

    MEMORY MAP TABLE (DEFAULT 1GB SYSTEM)
    CategoryMemory Segment NameLengthStart AddressUsage
    Linux Memory LINUX_MEM_1 364 MB 0x80000000 First memory segment given to Linux Memory Manager in Kernel
    CMEM (C6Accel) CMEM 20 MB 0x96C00000 Contiguous memory segment used by C6accel
    Slave Local Heap (DSP) DSP_ALG_HEAP 20 MB 0x98000000 Used for allocating memory for DSP algorithms
    Shared Region IPC_SR_HOST_DSP 1 MB 0x99400000 Shared Region between Host and DSP
    Slave Executable (DSP) DSP_DATA 12 MB 0x99500000 DSP Executable data (bss, const etc.)
    DSP_CODE 0 MB 0x9A100000 DSP Executable text (may not be used by all DSP applications.
    Shared Region IPC_SR_MC_HDVICP2_HDVPSS (IPC_SR_VIDEO_M3_VPSS_M3) 1 MB 0x9A100000 Internal Shared Region between Media Controllers MC-HDVICP2 and MC-HDVPSS
    Slave Local Heap (MC_HDVPSS) MC_HDVPSS_INT_HEAP_CACHED (VPSS_M3_INT_HEAP_CACHED) 27 MB 0x9A200000 MC-HDVPSS local heap in the cached region, used for allocating internal buffers
    Slave Local Heap (MC_HDVICP2) MC_HDVICP2_INT_HEAP_CACHED (VIDEO_M3_INT_HEAP_CACHED) 32 MB 0x9BD00000 MC-HDVICP2 local heap in the cached region, used for codec memory allocation
    Reserved - MC-HDVICP2 Firmware --- 7 MB 0x9DD00000 Media Controller HDVICP2 Executable Code and data
    UIA/Logger SM buffer LOGGER_SM 2 MB 0x9E400000 UIA/Logger buffer
    Reserved - MC-HDVPSS Firmware --- 17 MB 0x9E600000 Media Controller HDVPSS Executable Code and data
    Shared Region IPC_SR_COMMON 2 MB 0x9F700000 Default Shared Region between Host, DSP, MC-HDVICP2 and MC-HDVPSS
    Unused Hole Unused 3 MB 0x9F900000 Unused memory, this can not be assigned to Linux, as linux needs to start at 4MB boundary
    Linux Memory LINUX_MEM_2 320 MB 0x9FC00000 Second memory segment given to Linux Memory Manager in Kernel
    Shared Region IPC_SR_FRAME_BUFFERS 188 MB 0xB3D00000 Shared Region between Host and MC-HDVICP2 and MC-HDVPSS, used to allocate all video buffers
    Reserved - MC-HDVPSS Firmware MC_HDVPSS_NOTIFY_MEM (HDVPSS_NOTIFY_MEM) 2 MB 0xBF900000 Used for IPC between Host and MC-HDVPSS. This is in non-cached memory region.
    MC_HDVPSS_V4L2_FBDEF_MEM (HDVPSS_V4L2_FBDEF_MEM) 2 MB 0xBFB00000 Used by V4L2 and Fbdev drivers. This is in non-cached memory region.
    MC_HDVPSS_DESC (HDVPSS_DESC) 2 MB 0xBFD00000 Used by HDVPSS driver data structures. This is in non-cached memory region.
    Reserved for Memory Configuration MEMCFG_SPACE 1 MB 0xBFF00000 Reserved. Used by firmware loader.
    Color Code
    Linux Memory
    Memory used for regions that can be adjusted without rebuilding Media Controller executable.
    Memory Reserved for Media Controller Executables
  • 0 回复 Chris Meng
    Prodigy 220 points

    另外，对于omx的dsp，文档中提供的内存修改方法为：

    DSP for OMX

    1. It uses the same memory segment definition file $(EZSDK_INSTALL_DIR)/component-sources/omx_05_02_00_09/packages/ti/omx/build/MemSegmentDefinition.xs.
    2. DSP build also uses Shared Region information from file $(EZSDK_INSTALL_DIR)/component-sources/omx_05_02_00_09/packages/ti/omx/memcfg/memtbl_cfg.h through below defines, Ensure that these information matches the mem cfg defined in mm_host_util. This dependency will be removed in the patch release .
      1. MEMCFG_SRBASE1
      2. MEMCFG_SRSIZE1
      3. MEMCFG_SRBASE2
      4. MEMCFG_SRSIZE2
    3. Rebuild DSP side OMX library & application.
    我想问一下，Rebuild DSP side OMX library & application，这里指的是什么？因为我用的是omx中的h264解码模块，这个模块库里面好像没有提供dsp端的源码，因为 我的$(EZSDK_INSTALL_DIR)\component-sources\omx_05_02_00_48\src\ti\omx\comp\vfdc文件夹内只有一个头文件，没有源码。这样的话，还能成功修改内存分布吗？比如，我想加大Slave Executable (DSP)，加大DSP_ALG_HEAP，可以吗？
    如果可以修改的话，如何改呢？修改MemSegmentDefinition.xs和memtbl_cfg.h完成后，执行components_dsp ，make dsp-devkit , make omx可以成功修改吗？