I am referring to MPC5644a reference manual, chapter 12.4.6 to perform erase operation on a flash block in high-address space.
Note 1: I have no problem to erase flash blocks L0 and M0 in flash bank B, but for some reason nothing happens when trying to erase block H0 in bank B. HLR.B.HBE is 1 after unlock and MCR.B.PEG is 1 after attempt to erase, but the data is still there.
Note 2: I also have no problem to write to block H0 in bank B. It is just erase in high-address space that doesn't work.
This is the code:
#define FLASH_B (*( volatile struct FLASH_tag *) 0xC3F8C000)
#define FLASH_ADDR 0x00100000
...
volatile struct FLASH_tag *pFlash;
pFlash = &FLASH_B;
//0 - unlock
pFlash->HLR.R = 0xB2B22222; //password
pFlash->HLR.B.HBLOCK = 0x0; //unlock all blocks in high address space
//1
pFlash->MCR.B.ERS = 1;
//2
pFlash->HSR.B.HBSEL = 0x1;//High-address space block H0 (Flash B)
//3
*(unsigned int *)FLASH_ADDR = 0xFFFFFFFF;
//4
pFlash->MCR.B.EHV = 1;
//5
while ((pFlash->MCR.B.DONE == 0));
//6
char peg = pFlash->MCR.B.PEG;
//7
pFlash->MCR.B.EHV = 0;
//8
//no more blocks
//9
pFlash->MCR.B.ERS = 0;
