AWRL6432: Shared Memory setting (SBL, Main)

Lina Kim

Part Number: AWRL6432
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hi team,

This is Lina covering Radar. Below is the customer's question.

The current development structure is structured using SBL.

They want to set the Shared Memory Config to 1 and subtract 128K from the HWA to set it on the MAIN side.

[ MAIN linker.com ]

MEMORY

{

M4F_VECS : ORIGIN = 0x00400000 , LENGTH = 0x00000140

M4F_VERINFO : ORIGIN = 0x00400140 , LENGTH = 0xC0

M4F_RAM12 : ORIGIN = 0x00400200 , LENGTH = (0x00058000 - 0x200) /* 32KB of RAM2 is being used by RBL */

M4F_RBL : ORIGIN = 0x00458000 , LENGTH = 0x8000 /* 32KB of RAM2 is being used by RBL */

M4F_RAM3 : ORIGIN = 0x00460000 , LENGTH = 0x00040000

HWASS_SHM_MEM : ORIGIN = 0x60000000, LENGTH = 0x00060000 /* 256KB in APPSS PD, 96KB in FECSS PD and 160KB in HWA PD */

}

[ SBL linker.cmd ]

MEMORY

{

M4F_VERINFO : ORIGIN = 0x00400140 , LENGTH = 0xC0

M4F_VECS : ORIGIN = 0x00480000 , LENGTH = 0x00000200

M4F_SHA_RAM : ORIGIN = 0x00480200 , LENGTH = 0x00040000 - 0x00000200

M4F_RAM : ORIGIN = 0x00400200 , LENGTH = 0x00010000

}

They want to set it as above and use it, but the M4F_VECS area on the SBL side overlaps with the M4F_RAM3 area on the MAIN side, causing a problem.

They'd like to move the M4F_VECS area of SBL to another place, is there any possible area?

(If possible, They want to move to the area after 0x400200, but if I set it that way, it won't boot.)

Regards,

Lina

6 months ago

0 Voona Deexith 6 months ago

TI__Expert 4190 points

Hi Lina,

Thanks for posting your question over E2E. Please allow us a day for our software expert to respond.

0 Johnny Chou 6 months ago in reply to Voona Deexith

Prodigy 150 points

We also encountered the same problem, when can we get the answer? Thank you!

0 Johnny Chou 6 months ago in reply to Johnny Chou

Prodigy 150 points

I have currently resolved this issue
The following is the modified part

---> makefile_ccs_bootimage_gen

BOOT_VECTOR_ADDRESS=0x400000
SH_MEM_CONFIG=0x03

--->example.syscfg

CONFIG_MPU_REGION1=>Region Size(bytes) : 1MB

--->linker.cmd

SECTIONS
{
    /* This has the M4F entry point and vector table, this MUST be at 0x0 */
    .vectors:{} palign(8) > M4F_VECS
    .bss:    {} palign(8) > M4F_RAM12     /* This is where uninitialized globals go */
    RUN_START(__BSS_START)
    RUN_END(__BSS_END)
    .text:   {} align(8) >> M4F_SHA_RAM     /* This is where code resides */
    .data:   {} align(8) >> M4F_RAM12 | M4F_RAM3     /* This is where initialized globals and static go */
    .rodata: {} align(8) >> M4F_RAM12 | M4F_RAM3     /* This is where const's go */
    .sysmem: {} palign(8) > M4F_RBL     /* This is where the malloc heap goes */
    .stack:  {} palign(8) > M4F_RBL     /* This is where the main() stack goes */
    .l3:     {} palign(8) > HWASS_SHM_MEM     /* This is where L3 data goes */
    /* This section has code that configures the APPSS/HWASS shared memory either to APPSS or HWASS based on SH_MEM_CONFIG parameter in meta header.
       Hence this code has to run from regular RAM */
    .jumptoApp: {} palign(8) > M4F_RAM3
    .jumptoAppdata: {} palign(8) > M4F_RAM3
}

MEMORY
{
    M4F_VECS : ORIGIN = 0x00400000 , LENGTH = 0x00000200
    M4F_RAM12  : ORIGIN = 0x00400200 , LENGTH = (0x00058000 - 0x200) /* 32KB of RAM2 is being used by RBL */
    M4F_RBL    : ORIGIN = 0x00458000 , LENGTH = 0x8000 /* 32KB of RAM2 is being used by RBL */
    M4F_RAM3  : ORIGIN = 0x00460000 , LENGTH = 0x00020000
    M4F_SHA_RAM  : ORIGIN = 0x00480200 , LENGTH = 0x00040000 - 0x00000200

    HWASS_SHM_MEM : ORIGIN = 0x60000000, LENGTH = 0x00080000 /* 256KB in APPSS PD, 96KB in FECSS PD and 160KB in HWA PD */
}

*** The key is to clean build ***

0 Kristien Everett 6 months ago

TI__Genius 12986 points

Hey Lina,

You should be able to move M4F_VECS to the same location as the application image itself - i..e, M4F_VECS : ORIGIN = 0x00400000 , LENGTH = 0x00000140 - since the vector table should match for both unless you are using a project with a different RTOS version from the SBL. Additionally, have you configured MPU_REGION1 as 1 MB in SysConfig?

Regards,

Kristien

+1 Kristien Everett 6 months ago in reply to Kristien Everett

TI__Genius 12986 points

Hey Lina,

While not exactly the same issue, reviewing the following E2E may also help out here: https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1475629/awrl6432-booting-fail-with-the-image-whose-text-section-is-in-shared-memory-starting-from-0x00480000

Regards,

Kristien

0 Lina Kim 6 months ago in reply to Kristien Everett

TI__Prodigy 570 points

Hello Kristien,

Thank you for your attention and kind response! He's my customer who asked that question.

Have a good day.

Regards,

Lina

0 Kristien Everett 6 months ago in reply to Lina Kim

TI__Genius 12986 points

Hey Lina,

Perfect, thanks for letting me know. I will close out this thread now.

Cheers,

Kristien

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AWRL6432: Shared Memory setting (SBL, Main)