Forum Discussion
ContributorPFL - Flash queries
Regular ContributorThe start address for option bit will be generated and provided during PFL IP instantiation. Meanwhile for the page address of all the SOF in the POF, you can select Auto to let the Intel Quartus Prime software automatically set the start address for that page. Select Block to specify
the start and end addresses, or select Start to specify the start address only.
You may follow the link below for the guide to create the POF file for your design.
https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_pfl.pdf (Page 23)
- Knug
Hi,
Used <auto> mode and managed to generate the .pof file successfully.
Page_0 start address: 0x00020000 end address: 0x0043241B
Page_1 start address: 0x00440000 end address: 0x0085241B
Page_2 start address: 0x00860000 end address: 0x00C7241B
Option bits start address: 0x0000000 end address: 0x00000080 <- .pof version
Start addresses were generated automatically on a 128KB boundary (actually 2^17 = 131,072)
Thanks for this.
1) But the .map file generated stated that all addresses in the .map file are byte addresses. Does it mean each address location contains a byte of data ?
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2) However, still need someone to explain wrt Parallel Flash Loader Intel FPGA IP User Guide pg17 :
"Page Start Address, End Address, and Page-Valid Bit Stored as Option Bits" Fig12 diagram ? It states that it is using flash byte addressing mode
It states that Bits 0 to 12 for the page start address are set to zero and are not stored as option bits.
Is that for a 28bit address (27:0) : Address(12:0) are always set to '0'?
I am confused from the fig12 byte addressing mode shown. The Bit7....Bit1 at eg 0x002000 address does this correspond to the data and bit 0 of the start address of each page is 'Page-Valid' bit?
If Bit7....Bit0 corresponds to the data, what about address 0x002002 shows only 7 bits of data ie Bit7...Bit1 ?
or are those bits representing the address bits?
Very confusing..
3) Our system uses flash_addr(25:0) & flash_data(15:0). How will we address our PFL correctly ?
