Issue of MPC5748G C55 Flash Driver

[tajo]

Hi everyone,

   I am using  DEVKIT-MPC5748G to develop bootloader. But I got some problem while using c55 flash driver.

   The problem is that using pFlashErase() to erase 256KBlock will get stuck in IVOR1_Handler after I unlock the all the 256KBlock except the 22th 256KBlock  by using :

  pSetLock(&ssdConfig, C55_BLOCK_256K_FIRST, 0xFFE00000);

Erase by:

/* Select all blocks except blocks occupied by bootloader */
lowBlockSelect = 0x0000017C; //0b 0001 0111 1100  0x00620000-0x00620000(HSM Code) 0x00F8C000U(Bootloader) 0x00404000(BAF)
midBlockSelect = 0x000003FE; //0b 0011 1111 1110 0x00F90000U(Booyloader)
highBlockSelect = 0x00000000; //0b 0000 0000 0000 0x00F80000U 0x00F84000U (HSM Data)
n256KBlockSelect.first256KBlockSelect = 0x001FFFFF;//0x003FFFFF; // 0x003FFFFF; //0b 0011 1111 1111 1111 1111 1111
n256KBlockSelect.second256KBlockSelect = 0x00000000;

returnCode = pFlashErase(&ssdConfig,
C55_ERASE_MAIN,
lowBlockSelect,
midBlockSelect,
highBlockSelect,
n256KBlockSelect);

Is there sth err ?

Please help me about this issue.

Best regard.

[tajo]

   And when I did not erase any 256KBlock, it is Okay:

pFlashErase(&ssdConfig,
C55_ERASE_MAIN,
lowBlockSelect,
midBlockSelect,
highBlockSelect,
0x00000000);

   I have checked the memory, the last 256KBlock is from 0x01540000 to 0x0157FFFF. When I am debugging, it's occupied, so I just cannot erase this block. Is this right? But I can erase left 21 256KBlock.

   My linker_flash.ld setting is:

MEMORY
{ 
flash_rchw : org = 0x00f8c000, len = 0x4 
cpu0_reset_vec : org = 0x00f8c000+0x10, len = 0x4
cpu1_reset_vec : org = 0x00f8c000+0x14, len = 0x4
cpu2_reset_vec : org = 0x00f8c000+0x04, len = 0x4

/*m_text : org = FLASH_BASE_ADDR, len = FLASH_SIZE*/
/*m_data : org = SRAM_BASE_ADDR, len = SRAM_SIZE*/
m_text : org = 0x01540000, len = 256k
m_data : org = SRAM_BASE_ADDR, len = SRAM_SIZE
}

[lukaszadrapa]

Hi,

I can't see any issues on my side, I successfully erased also the last 256kb blocks. Can you share some simple project to reproduce the problem?

Regards,

Lukas

[tajo]

Hi Lukas，

   I have just import a new S32DS prject from example.There is some original content(do not erase any 256Kblock):

blockSelect.lowBlockSelect = 0x4U;
blockSelect.midBlockSelect = 0x0U;
blockSelect.highBlockSelect = 0x0U;
blockSelect.first256KBlockSelect = 0x0U;
blockSelect.second256KBlockSelect = 0x0U;

 Because flash.ld is :

m_text : org = 0x01540000, len = 256k
m_data : org = SRAM_BASE_ADDR, len = SRAM_SIZE

   So I change it to erase all 256kb blocks except the last, from 0x01540000 to 0x0157FFFF(refer to MPC5748G_features.h) :

blockSelect.lowBlockSelect = 0x4U;
blockSelect.midBlockSelect = 0x0U;
blockSelect.highBlockSelect = 0x0U;
blockSelect.first256KBlockSelect = 0x001FFFFF;//0x0U;
blockSelect.second256KBlockSelect = 0x0U;

   Sorry I cannot find out where to upload files, so I will mention that the example project name, its:

flash_program_erase_mpc5748g

   Can U help me importing & testing it?

Regards,

Tajo.

[tajo]

   I try to debug with the example, for that I want to find out when the problem will happen while which blosck being erased. There was someting strange.

    When I am erasing the 20th 256kb block(while j == 19),  the last block (from 0x01540000 to 0x0157FFFF) will be erased?Emmmmmm...

[lukaszadrapa]

Hi,

attached is my testing project. I just imported the drivers and simply copied important code from the demo code. Then I add unlocking of 256kb blocks and I erased last two blocks. To see the difference, I programmed some data to those blocks via debugger. I can see no problem here.

Regards,

Lukas

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