Forums - extend heap memory size

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extend heap memory size
Join Date: 28 Jun 20
Posts: 1
Posted: Thu, 2020-10-29 03:33

Hi ,

I use QCA4020 eval board with Hello World project to extend heap size.

My plan is that  I move "RAM_FOM_APPS_RO_MEMORY" 128K to "RAM_FOM_APPS_DATA_MEMORY" with no adding "RAM_FOM_APPS_DATA_MEMORY" size.

Therefore , I follow " QCA402x(CDB2x) Programmer's Guide 80-YA121-142 Rev.D 11/20, 2018 " , section 4.3.4 "Resize application memory" instruction :

1. modify DefaultTemplateLinkerScript.ld :


RAM_FOM_APPS_RO_MEMORY (Rx) : ORIGIN = 0x10046000, LENGTH = 0x3a000
RAM_FOM_APPS_DATA_MEMORY (W) : ORIGIN = 0x10080000, LENGTH = 0x10000


RAM_FOM_APPS_RO_MEMORY (Rx) : ORIGIN = 0x10046000, LENGTH = 0x1a000
RAM_FOM_APPS_DATA_MEMORY (W) : ORIGIN = 0x10060000, LENGTH = 0x10000   // I keep length to 0x10000

2.. modify DevCfg_master_devcfg_out.xml :


<!-- FOM Code and Data region = --> 0x00, 0x00, 0x00, 0x10,  0x00, 0x00, 0x10, 0x00, 0x02, 0xF1, 0x06, 0x00,


<!-- FOM Code and Data region = --> 0x00, 0x00, 0x00, 0x10,  0x00, 0x00, 0x10, 0x00, 0x02, 0xF9, 0x06, 0x00,


After modifying these change, i finish building the code.

However, qca4020 demo board couldn't run this image....

I have been troubled for some time of this problem

Could you help me to figure out what step i have wrong?

Thank you so much

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Join Date: 18 Jun 18
Location: San Jose
Posts: 297
Posted: Mon, 2020-11-09 14:27

2.. modify DevCfg_master_devcfg_out.xml  // This is used for default QCA402x EVK board

Kindly Modify DevCfg_master_devcfg_out_cdb.xml   // for CDB2x device

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