AM6411: Bootloader parse image fails

Paolo Mattachini

Part Number: AM6411
Other Parts Discussed in Thread: UNIFLASH

Tool/software:

Hello,

I am modifying the uniflash and bootloader applications to support my custom board which mounts a quad-spi flash (S25HS512TFAMHI01).

I managed to successfully flash the bootloader at 0x00 and the application at 0x80000, but when the bootloader starts after reset the system hangs on this function call:

status = Bootloader_parseMultiCoreAppImage(bootHandle, &bootImageInfo);

By single-stepping through the code I found out that the code hangs and end up in

HwiP_data_abort_handler

when executing the following statements in file bootloader.c line 384:

if ((*x509_cert_ptr == seq_oid[0]) && 
            (*(x509_cert_ptr + 2) == seq_oid[2]) &&
            (*(x509_cert_ptr - 2) == 0x30))

The same application instead runs smoothly if I load it using for example uart bootloader so I exclude it is a certificate problem.

Some notes:

I am using mcu_plus_sdk_am64x_09_01_00_41
I used sbl_ospi application as a starting point.
I need to reset the flash before calling
```
status = Board_driversOpen();
```
otherwise the system reads wrong manufacturer id and device id.

Looking forward to hearing from you

Paolo

over 1 year ago

+1 Prashant Shivhare over 1 year ago

TI__Guru 69061 points

Hi Paolo,

This is a known issue. You may apply the following workaround until it is fixed in the next release.

diff --git a/examples/drivers/boot/sbl_ospi/am64x-evm/r5fss0-0_nortos/main.c b/examples/drivers/boot/sbl_ospi/am64x-evm/r5fss0-0_nortos/main.c
index 7a52d3c4..92514b55 100644
--- a/examples/drivers/boot/sbl_ospi/am64x-evm/r5fss0-0_nortos/main.c
+++ b/examples/drivers/boot/sbl_ospi/am64x-evm/r5fss0-0_nortos/main.c
@@ -107,6 +107,10 @@ int main(void)
     System_init();
     Bootloader_profileAddProfilePoint("System_init");
 
+    /* Workaround to keep the DAC enabled */
+    OSPI_Attrs* attrs = (OSPI_Attrs*)gOspiConfig[CONFIG_OSPI0].attrs;
+    attrs->dacEnable = TRUE;
+
     Drivers_open();
     Bootloader_profileAddProfilePoint("Drivers_open");

For more information on the issue, you may refer the following explanation

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1332543/mcu-plus-sdk-am243x-ospi-multi-partition-bootloader-example-not-working/5079592#5079592

Regards,

Prashant

0 Paolo Mattachini over 1 year ago in reply to Prashant Shivhare

Intellectual 290 points

Yes, that was it!
Thank you very much!

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AM6411: Bootloader parse image fails