TMS570LS3137: FO21,Fapi_Erase Sector of bank0 failed

Hello, 

We are developing the bootloader using TMS570LS3137 and found that in the bootloader:

Fapi_issueAsyncCommandWithAddress (Fapi_EraseSector, flash_sector [sectornum]. Start);

this function can erase bank1 sector, However, it is not possible to erase a sector in bank0, for example, when erasing sector10 in bank0, the system will make an error in erasing the sector.

1. The erasing function is as follows:

const SECTORS flash_sector[NUMBEROFSECTORS]=
{
  (void *)0x00000000, 0x08000, 0,  0, 0xfff87000,
  (void *)0x00008000, 0x08000, 0,  1, 0xfff87000,
  (void *)0x00010000, 0x08000, 0,  2, 0xfff87000,
  (void *)0x00018000, 0x08000, 0,  3, 0xfff87000,
  (void *)0x00020000, 0x20000, 0,  4, 0xfff87000,
  (void *)0x00040000, 0x20000, 0,  5, 0xfff87000,
  (void *)0x00060000, 0x20000, 0,  6, 0xfff87000,
  (void *)0x00080000, 0x20000, 0,  7, 0xfff87000,
  (void *)0x000A0000, 0x20000, 0,  8, 0xfff87000,
  (void *)0x000C0000, 0x20000, 0,  9, 0xfff87000,
  (void *)0x000E0000, 0x20000, 0, 10, 0xfff87000,
  (void *)0x00100000, 0x20000, 0, 11, 0xfff87000,
  (void *)0x00120000, 0x20000, 0, 12, 0xfff87000,
  (void *)0x00140000, 0x20000, 0, 13, 0xfff87000,
  (void *)0x00160000, 0x20000, 0, 14, 0xfff87000,
  (void *)0x00180000, 0x20000, 1,  0, 0xfff87000,
  (void *)0x001A0000, 0x20000, 1,  1, 0xfff87000,
  (void *)0x001C0000, 0x20000, 1,  2, 0xfff87000,
  (void *)0x001E0000, 0x20000, 1,  3, 0xfff87000,
  (void *)0x00200000, 0x20000, 1,  4, 0xfff87000,
  (void *)0x00220000, 0x20000, 1,  5, 0xfff87000,
  (void *)0x00240000, 0x20000, 1,  6, 0xfff87000,
  (void *)0x00260000, 0x20000, 1,  7, 0xfff87000,
  (void *)0x00280000, 0x20000, 1,  8, 0xfff87000,
  (void *)0x002A0000, 0x20000, 1,  9, 0xfff87000,
  (void *)0x002C0000, 0x20000, 1, 10, 0xfff87000,
  (void *)0x002E0000, 0x20000, 1, 11, 0xfff87000

};


uint8_t drvFapi_BlockEraseSector(uint8_t sectornum)
{
    uint8_t RetValue=0;

    Fapi_initializeFlashBanks((uint32_t)SYS_CLK_FREQ); /* used for API Rev2.01 */

    Fapi_setActiveFlashBank((Fapi_FlashBankType)(flash_sector[sectornum].bankNumber));
    Fapi_enableMainBankSectors(0xFFFF);                 /* used for API 2.01*/
    while( FAPI_CHECK_FSM_READY_BUSY != Fapi_Status_FsmReady );

    Fapi_issueAsyncCommandWithAddress(Fapi_EraseSector, flash_sector[sectornum].start);
    while( FAPI_CHECK_FSM_READY_BUSY == Fapi_Status_FsmBusy );
    while(FAPI_GET_FSM_STATUS != Fapi_Status_Success);

    if(Flash_Erase_Check((uint32_t)flash_sector[sectornum].start, flash_sector[sectornum].length))
    {
        RetValue |= 0x82;/*flash中的值不为0xFFFFFFFF,擦除失败*/
    }
    else
    {
        ;
    }

    return RetValue;
}

2. Link configuration is as follows:

MEMORY
{
    VECTORS         (X)          : origin=0x00000000 length=0x00000100
    FLASH_API   (RX)          : origin=0x00010000 length=0x00010000
    FLASH0                 (RX)         : origin=0x00020000 length=0x00040000

    STACKS          (RW)         : origin=0x08000000 length=0x00009000
    RAM_F201API (RW)         : origin=0x08009000 length=0x00003000
    RAM             (RW)         : origin=0x0800C000 length=0x00033F00
    USERDEFINE        (RW)         : origin=0x0803FF00 length=0x00000100        //GET_COREREG_ADDR用户自定义使用的内存段
}

 SECTIONS
{
    .intvecs : {} > VECTORS

   flashAPI :
   {
     Fapi_UserDefinedFunctions.obj (.text)
     bl_flash.obj (.text)
     --library= ..\lib\F021_API_CortexR4_BE.lib (.text)
   } load = FLASH_API, run = RAM_F201API, LOAD_START(api_load), RUN_START(api_run), SIZE(api_size)

    .text    : {} > FLASH0
    .const   : {} > FLASH0
    .cinit   : {} > FLASH0
    .pinit   : {} > FLASH0
    .bss     : {} > RAM
    .data    : {} > RAM
    .sysmem  : {} > RAM
}

3. The function _copyAPI2RAM_() is also called in void _c_int00(void)。

4. When erasing bank0 sector, the following error message is displayed