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AR# 60466

2014.1 Zynq-7000 SoC AP - NAND programming requires the board to be in JTAG mode

Description

NAND programming requires the board to be in JTAG mode.

Solution

To work around this issue, set the boot mode to JTAG boot.

If booting in JTAG mode is not possible (for example if a custom board does not have boot mode jumpers), the FSBL used for NAND programming can be modified.

Instead of reading the bootmode from the MIO:
BootModeRegister = Xil_In32(BOOT_MODE_REG);
BootModeRegister &= BOOT_MODES_MASK;
The code can "fake" the boot mode hard-coding JTAG:
BootModeRegister = JTAG_MODE;
This can be modified in the FSBL main.c file, for the FSBL used to program the NAND only (NOT the FSBL that goes into the boot image).
 
Note: This is not a Silicon issue, but a tool limitation.

AR# 60466
Date Created 04/30/2014
Last Updated 05/07/2014
Status Active
Type General Article
Devices
  • Zynq-7000
Tools
  • Vivado Design Suite - 2014.1