add more SPORT to ucDemo for SC589 has run out of memory on L2 memory.

Question

Hi, 
 We using Sigmastudio 4.5 , Sigmastudio 4.5 for sharc and crosscore 2.9.4 on a sharc ADSP SC589. 
 When we add more sports to the ucDemo for SC589, we run out of memory on L2 memory. 
 We need 7 sports. 
 We had already try to change the following line in the .ld file. /* ARM Core 0 L2 RAM, uncached */ /* MEM_L2_UNCACHED : ORIGIN = 0x20084000, LENGTH = 28K */ MEM_L2_UNCACHED : ORIGIN = 0x20084000, LENGTH = 76K /* max 77Kb */ 
 /* ARM Core 0 L2 RAM, cached */ /* MEM_L2_CACHED : ORIGIN = 0x2008B000, LENGTH = 84K */ MEM_L2_CACHED : ORIGIN = 0x20097000, LENGTH = 32K /* max 35Kb */ 
 After these changes we had the following overflow message. 
 ..... `.ss_text' will not fit in region `MEM_L2_CACHED' region `MEM_L2_CACHED' overflowed by 32684 bytes What we need to change so that everything fits in the L2 memory. 
 Regards

Sakthivel P · Accepted Answer

Hi, You may need to adjust the L2 memory region in ARM and SHARC as well if your application cant fit in already allocated L2 cached and un-cached memory. Please tryout the below steps, 1. In ARM project "system - Linker - ss4s.ld" file adjust the un-chaned memory 
 MEM_L2_UNCACHED : ORIGIN = 0x20084000, LENGTH = 76K 
 2. Adjust the cached memory origin based on memory adjusted for " MEM_L2_UNCACHED " i.e.) 76K 
 MEM_L2_CACHED : ORIGIN = 0x20097000, LENGTH = 32K 3. If L2 cached not sufficient then adjust the required memory in MEM_L2_CORE2 MEM_L2_CACHED : ORIGIN = 0x20097000, LENGTH = 64K MEM_L2_CORE2 (r) : ORIGIN = 0x200A7000, LENGTH = 32K 4. The "MMUConfig.c" in ARM project "system - MMU" should be adjusted for above L2 Memory adjustments as below, 
 { 0x20084000u, 0x20096FFFu, ADI_MMU_RW_UNCACHED }, /* 76KB ARM uncached L2 */ #if defined(__ADSPSC582__) { 0x20088000u, 0x200A3FFFu, ADI_MMU_WB_CACHED }, /* 112KB ARM cached L2 */ { 0x200A4000u, 0x200BFFFFu, ADI_MMU_RW_UNCACHED }, /* 104KB SHARC0, & 8KB boot code working area */ #else { 0x20097000u, 0x200A6FFFu, ADI_MMU_WB_CACHED }, /* 64KB ARM cached L2 */ { 0x200A7000u, 0x200BFFFFu, ADI_MMU_RW_UNCACHED }, /* 88KB SHARC1, SHARC0, & 8KB boot code working area */ #endif 
 5. The "app.ldf" in SHARC core projects "system - startup_ldf" should be adjusted, Since the SHARC L2 memory origin modified as below, 
 mem_L2B5B6_bw { TYPE(BW RAM) START(0x200a7000) END(0x200affff) WIDTH(8) } Please let us know if you are facing any issue or further clarifications. Thanks.

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add more SPORT to ucDemo for SC589 has run out of memory on L2 memory.

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