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RM48L952: Rm48: Difference Between Flash Initialization Driver in TI Bootloader and HalCoGen Generated Implementation

Tammy Noergaard
Genius 3665 points
Part Number: RM48L952
Other Parts Discussed in Thread: HALCOGEN

Hello,

We are using the Hercules RM48l952zwt. with 5.2.12 TI bootloader for the RM 48 and 4.3.00 HalCoGen.  Uploaded the TI Bootloader and HalCoGen Genereated Drivers below. What is the difference Between Flash Initialization Driver in TI Bootloader and HalCoGen Generated Implementation for the Flash initialization?  The reason is the HalCoGen generated code is very stable even if the AC fluctuates, but the TI bootloader version corrupts flash on initialization. What do we need to make identical in the TI bootloader like the HalCoGen code, to avaoid flash corruption on initialization?  Thank You.

7103.boot_sdcard.zip4762.HalCoGen (2).zip

  • 0
    TI__Guru**** 196776 points
    Hello Tammy,

    Both projects use the same settings for flash:
    1. Data read wait states: 3
    2. Address wait state: 1

    Since the bootloader was developed 6 years ago, it did not contain the workarounds for several errata.
  • 0 in reply to QJ Wang
    Genius 3665 points
    Hi QJ,

    Thank you. We are shipping and need the bootloader. Where can we start to carefully add the workarounds in the HalCoGen version to the TI Bootloader version? Is there a list, and I can methodically go down and add the changes to the list? We just need whatever in HalCoGen init code that protects the Flash for the Flash not to get corrupted on initialization when we are in the TI bootloader, if the AC fluctuates. Thank you again. Tammy
  • 0 in reply to QJ Wang
    Genius 3665 points

    Hi QJ, We reversed engineered and did a diff between the HalCoGen init code and the bootloader init code. Some of the differences included:

    1.In function _c_int00:

    1.1  _coreInitRegisters_(); #31 not initialized in halcogen version and #19 not initialized in bootloader version

    1.2  _coreInitStackPointer_(); ** different in both versions, #31 and memory alloc

    1.3 _coreEnableEventBusExport_(); missing in bootloader version

    1.4 _coreEnableFlashEcc_(); missing in bootloader version

    1.5  _errata_CORTEXR4_66_(); missing in bootloader version but there is no source code to copy, what library is it in?

    1.6 _errata_CORTEXR4_57_(); missing in bootloader version but there is no source code to copy, what library is it in?

    1.7 not in bootloader version. if ((esmREG->SR1[2]) != 0U)    {  for(;;)  { }/* Wait */

    2.In function systemInit, muxInit is missing from the bootloader version

    3. In function setupPll: systemREG1->PLLCTL1  set differently = 0x00000000U  | 0x20000000U   | ((0x1F)<< 24U)    | 0x00000000U   | ((6U - 1U)<< 16U)    | ((120U - 1U)<< 8U); / /** set to 150U in HalCoGen version

    4. In function setupFlash: flashWREG->FBFALLBACK is set differently. In bootloader version = 0x00000000    | (SYS_ACTIVE << 14U)    | (SYS_SLEEP << 12U)    | (SYS_SLEEP << 10U)   | (SYS_SLEEP << 8U)

    | (SYS_SLEEP<< 6U) | (SYS_SLEEP << 4U) | (SYS_ACTIVE<< 2U) | SYS_ACTIVE;                    

    in HalCoGen version = 0x00000000U   | (uint32)((uint32)SYS_ACTIVE << 14U) /* BANK 7 */   | (uint32)((uint32)SYS_ACTIVE << 2U)  /* BANK 1 */    | (uint32)((uint32)SYS_ACTIVE << 0U); /* BANK 0 */


    5. In function trimPLO: bootloader version set differently systemREG1->LPOMONCTL      = (1U << 24U)   | (16U << 8U)   | 8U; //halcogen version it is set to 16U


    6. In function mapClocks:

    6.1 systemREG1->CDDIS set differently in bootloader version = (FALSE << 4 ) /* AVCLK 1 OFF */  |(TRUE << 5 ) /* AVCLK 2 OFF */  |(FALSE << 8 ) /* VCLK3 OFF */   |(FALSE << 10) /* AVCLK 3 OFF */                     |(FALSE << 11); /* AVCLK 4 OFF */

    in HalCoGen version =  (uint32)((uint32)0U << 4U ) /* AVCLK 1 OFF */  | (uint32)((uint32)1U << 5U ) /* AVCLK 2 OFF */ | (uint32)((uint32)0U << 8U ) /* VCLK3 OFF */  | (uint32)((uint32)0U << 9U ) /* VCLK4 OFF */
     | (uint32)((uint32)0U << 10U) /* AVCLK 3 OFF */  | (uint32)((uint32)0U << 11U); /* AVCLK 4 OFF */

    6.2 setting systemREG1->PLLCTL2 and systemREG1->CLKCNTL missing in bootloader code but set in HalCoGen code

    6.3 systemREG2->VCLKACON1 set differently. in bootloader version = (1U << 24)  | 1 << 20U  | (SYS_VCLK << 16)  | (1U << 8)  | 1 << 4U

    in HalCoGen version =  (uint32)((uint32)(1U - 1U) << 24U)   | (uint32)((uint32)0U << 20U)  | (uint32)((uint32)SYS_VCLK << 16U)  | (uint32)((uint32)(4U - 1U) << 8U)  | (uint32)((uint32)0U << 4U)   | (uint32)((uint32)SYS_PLL2 << 0U);

    7. In bootloader version F021 API libs are different version (2.1.00, Cortex R4BE and LE libs)  then HalCoGen integrated version (only Cortex R4 LE V3D16)

    Can we safely change the bootloader code to make it the same as HalCoGen generated code? For the errata code we do not have, where can we get the the libs? Can we safely replace the F021 lib from the HalCoGen version to the bootloader version?  Thank You Again.

  • 0 in reply to Tammy Noergaard
    TI__Guru**** 196776 points
    Hello Tammy,

    We will update the bootloader. Please refer to this application note regarding the device initialization.
    www.ti.com/.../spna106d.pdf
  • 0 in reply to QJ Wang
    Genius 3665 points

    Hi QJ thank you. When will the new bootloader be available?  Take Care, Tammy

  • 0 in reply to Tammy Noergaard
    TI__Guru**** 196776 points
    Hi Tammy,

    I will release the new one in 3Q. Thanks