mpc5748g bootloader

tony_huang — Fri, 02 Mar 2018 13:06:45 GMT

Hi,

The AN5319SW.zip describes the MPC5748G bootloader, and the main.c folder, I cann't get some poins：

.........................................

lowBlockSelect = 0x17C;

..........................................

returnCode = pSetLock(&ssdConfig, C55_BLOCK_LOW, 0xFFFFFE83);

To unlock low block in the flash, how can I get the vaule of 0xFFFFFE83? And the lowBlockSelect ?= 0x17C.

UINT8 EraseFlash(void)

{

UINT32 opResult = 0;

UINT32 lowBlockSelect;

UINT32 midBlockSelect;

UINT32 highBlockSelect;

N256K_BLOCK_SEL n256KBlockSelect;

OutStr("\r\nPlease wait...\r\n");

/* Select all blocks except blocks occupied by bootloader */

lowBlockSelect = 0x17C;

midBlockSelect = 0x3FE;

highBlockSelect = 0x0;

n256KBlockSelect.first256KBlockSelect = 0x003FFFFF;

n256KBlockSelect.second256KBlockSelect = 0x0;

returnCode = pFlashErase(&ssdConfig,

C55_ERASE_MAIN,

lowBlockSelect,

midBlockSelect,

highBlockSelect,

n256KBlockSelect);

UINT8 FlashInitAndUnlock(void)

{

/* Flash Init */

returnCode = pFlashInit(&ssdConfig);

if (C55_OK != returnCode)

{

return(FlashInitError);

}

/* Unlock all flash blocks except two 16KB blocks which are occupied by

bootloder:

(0x00F8C000--0x00F8FFFF and 0x00F90000--0x00F93FFF) */

/* unlock low blocks except 0x00F8C000--0x00F8FFFF */

returnCode = pSetLock(&ssdConfig, C55_BLOCK_LOW, 0xFFFFFE83);

if (C55_OK != returnCode)

{

return(FlashInitError);

}

/* unlock mid blocks except 0x00F90000--0x00F93FFF */

returnCode = pSetLock(&ssdConfig, C55_BLOCK_MID, 0xFFFFFC01);

if (C55_OK != returnCode)

{

return(FlashInitError);

}

/* unlock 256K blocks */

returnCode = pSetLock(&ssdConfig, C55_BLOCK_256K_FIRST, 0xFFC00000);

if (C55_OK != returnCode)

{

return(FlashInitError);

}

return(noErr);

}//FlashInitAndUnlock

Re: mpc5748g bootloader

lukaszadrapa — Thu, 22 Mar 2018 14:13:10 GMT

Hi,

from RM:

'1' disables access

'0' enables access

All low blocks above 0xF8_C000 (this one is used for bootloader) are enabled. HSM blocks (0x0062_...) are disabled.

Regards,

Lukas

Re: mpc5748g bootloader

ricky529762216 — Tue, 02 Jul 2019 01:32:53 GMT

Where can I download this document?

MPC5xxx中的主题 Re: mpc5748g bootloader

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