Error Message: Can not generate mask for the LMB peripherals
"::hw_lmb_bram_if_cntlr_v2_10_b::update_syslevel_mask" line 88
C_MASK (IPNAME:lmb_bram_if_cntlr, INSTANCE:ilmb_cntlr) - Can not generate
mask for the LMB peripherals! An address decode mask is assigned to all LMB
peripherals connected to the MicroBlaze processor. The address decode mask is
based on a set of decode bits that distinguish the LMB address space from the
OPB/PLB address space. The error message indicates that a set of decode bits
can not be found to generate a mask. Please modify the address map of the
slaves connected to OPB/PLB to use a common address bit.
ERROR:EDK:1585 - IPNAME:lmb_bram_if_cntlr INSTANCE:ilmb_cntlr -
E:\Xilinx\11.1\EDK\hw\XilinxProcessorIPLib\pcores\lmb_bram_if_cntlr_v2_10_b\d
ata\lmb_bram_if_cntlr_v2_1_0.mpd line 77 - error computing override value for
C_MASK using tcl
ERROR:EDK:3193 - issued from TCL procedure
"::hw_lmb_bram_if_cntlr_v2_10_b::update_syslevel_mask" line 88
C_MASK (IPNAME:lmb_bram_if_cntlr, INSTANCE:dlmb_cntlr) - Can not generate
mask for the LMB peripherals! An address decode mask is assigned to all LMB
peripherals connected to the MicroBlaze processor. The address decode mask is
based on a set of decode bits that distinguish the LMB address space from the
OPB/PLB address space. The error message indicates that a set of decode bits
can not be found to generate a mask. Please modify the address map of the
slaves connected to OPB/PLB to use a common address bit.
ERROR:EDK:1585 - IPNAME:lmb_bram_if_cntlr INSTANCE:dlmb_cntlr -
E:\Xilinx\11.1\EDK\hw\XilinxProcessorIPLib\pcores\lmb_bram_if_cntlr_v2_10_b\d
ata\lmb_bram_if_cntlr_v2_1_0.mpd line 77 - error computing override value for
C_MASK using tcl I understand its complaining about the mask values, but I'm not exactly sure why. Here is the address map it shows:Address Map for Processor microblaze_0
(0000000000-0x00003fff) dlmb_cntlr dlmb
(0000000000-0x00003fff) ilmb_cntlr ilmb
(0x81800000-0x8180ffff) xps_intc_0 mb_plb
(0x81c00000-0x81c0ffff) xps_ll_temac_0 mb_plb
(0x83400000-0x8340ffff) Generic_SPI mb_plb
(0x83c00000-0x83c0ffff) xps_timer_0 mb_plb
(0x84000000-0x8400ffff) RS232 mb_plb
(0x84400000-0x8440ffff) mdm_0 mb_plb
(0x8c000000-0x8fffffff) mpmc_0 mb_plb
(0xfffff000-0xffffffff) xps_gpio_0 mb_plb Any thoughts? I was unable to find another instance of this error message.
Replay
Version 11.3 I actually figured it out, its rather odd that the generate addresses button doesn't do this automatically. It appears that the mask was set to trigger use of the cache on a single bit. 0x00800000. I had enough devices added where automatic address generation was using the most significant bit meaning that bit was falling within other address spaces. I changed it to 0xFFFFC000. (Basically telling it to match addresses if all address signals above 16KB are zero). I don't know if that is the proper way to do it, but it accepted it. Now I'm fighting with some stuff regarding an FSL bus I added that apparently isn't quite properly setup, so I haven't found out yet if the processor likes that address mask. But the tools appear to like it.