Memory Map Layout

Introduction

This section explains the default DDR memory layout for AM62AX.

DDR

Below picture shows the memory layout details of DDR.

0x80000000 +--------------------------------------+
           |      TF-A                            |
0x80200000 +--------------------------------------+
           |            Used by Linux             |
0x80400000 +--------------------------------------+
           |          Temporarily used by         |
           |       SBL for authentication of      |
           |       images. Will be used by Linux  |
           |       after Linux is booted          |
0x80590000 +--------------------------------------+
           |            Used by Linux             |
0x99800000 +--------------------------------------+
           |       IPC VRING Used for IPC         |
           |        between Linux and C7x         |
0x99900000 +--------------------------------------+
           |    IPC Resource table Used for IPC   |
           |        between Linux and C7x         |
0x99900400 +--------------------------------------+
           |     IPC trace buffer used for IPC    |
           |        between Linux and C7x         |
0x99A00000 +--------------------------------------+
           |           C7x Boot section           |
0x99A00400 +--------------------------------------+
           |                Unused                |
0x99C00000 +--------------------------------------+
           |              C7x Vectors             |
0x99C04000 +--------------------------------------+
           |                Unused                |
0x99C10000 +--------------------------------------+
           |           Code/Data for C7x          |
0x9B800000 +--------------------------------------+
           |         IPC VRING Used for IPC       |
           |       between Linux and MCU R5F      |
0x9B900000 +--------------------------------------+
           |    IPC Resource table Used for IPC   |
           |       between Linux and MCU R5F      |
0x9B900400 +--------------------------------------+
           |     IPC trace buffer used for IPC    |
           |       between Linux and MCU R5F      |
0x9BA00000 +--------------------------------------+
           |           Code/Data for MCU R5F      |
0x9C800000 +--------------------------------------+
           |         IPC VRING Used for IPC       |
           |       between Linux and WKUP R5F     |
0x9C900000 +--------------------------------------+
           |    IPC Resource table Used for IPC   |
           |       between Linux and WKUP R5F     |
0x9C900400 +--------------------------------------+
           |     IPC trace buffer used for IPC    |
           |       between Linux and WKUP R5F     |
0x9CA00000 +--------------------------------------+
           |        Code/Data for WKUP R5F        |
0x9E700000 +--------------------------------------+
           |       TIFS LPM context save memory   |
0x9E780000 +--------------------------------------+
           |           TF-A during R5 SPL         |
           |  (TF_A is relocated to 0x80000000    |
           |             after R5F SPL)           |
0x9E800000 +--------------------------------------+
           |                OPTEE                 |
0xA0000000 +--------------------------------------+
           |         IPC VRING Used for IPC       |
           |     between MCU R5F, C7x, WKUP R5F   |
0xA1000000 +--------------------------------------+
           |           Remore core logging        |
0xA1040000 +--------------------------------------+
           |         TI OpenVX shared memory      |
0xA2000000 +--------------------------------------+
           |       Remote core file operations    |
0xA2400000 +--------------------------------------+
           |     TI OpenVX shared memory for      |
           |            Run-time logging          |
0xA3000000 +--------------------------------------+
           |            Shared buffers            |
0xAE000000 +--------------------------------------+
           |         Local Heap for MCU R5F       |
0xAF000000 +--------------------------------------+
           |         Local Heap for WKUP R5F      |
0xB0000000 +--------------------------------------+
           |  Non-cacheable local Heap for C7x    |
0xB1000000 +--------------------------------------+
           | Non-cacheable scratch memory for C7x |
0xB2000000 +--------------------------------------+
           |         Local Heap for C7x           |
0xB9000000 +--------------------------------------+
           |         Local scratch for C7x        |
0xC0000000 +--------------------------------------+
           |              Used by Linux           |
           +--------------------------------------+