Opened 15 years ago

Closed 15 years ago

Last modified 15 years ago

#41 closed helpdesk (fixed)

Binding error with cache coherence on sparcv8 ISS

Reported by: fabien.colas-bigey@… Owned by: developers
Priority: N/A Component: IP-Cores
Keywords: Cc:

Description

The platform is based on the topcell example : caba-ring-ccxcachev1_memcachev1-mipsel. Here are the main differences:

  • Sparcv8 instead of mipsel32
  • Different memory segments
  • No MMU define in the segmentation.h file
  • Different linker script for soft (in order to meet sparcv8 requirements)
  • Only 4 irqs instead of 5 (sparcv8 requirement)

The problem is that the platform compiles but there is a binding error when launching the system.

Error: (E109) complete binding failed: 2 binds exceeds maximum of 1 allowed: port 'proc3.vci_ini_rw_rspack' (sc_out)

I checked all connexions and it seems ok for me. If anyone could help, this would be great.

Many thanks, Fabien.

Attachments (2)

caba-ring-ccxcachev1_memcachev1-sparcv8.tgz​ (13.6 KB) - added by fabien.colas-bigey@… 15 years ago.
Complete platform : requires sparcv8 elf compiler
topcell.diff​ (2.9 KB) - added by Nicolas Pouillon 15 years ago.
Topcell fix

Download all attachments as: .zip

Change History (4)

Changed 15 years ago by fabien.colas-bigey@…

Attachment: caba-ring-ccxcachev1_memcachev1-sparcv8.tgz​ added

Complete platform : requires sparcv8 elf compiler

Changed 15 years ago by Nicolas Pouillon

Attachment: topcell.diff​ added

Topcell fix

comment:1 Changed 15 years ago by Nicolas Pouillon

Resolution: → fixed
Status: new → closed

There are only 4 IRQs on sparc, therefore, you must use IRQ lines 0 to 3 (not 0 to 4). In the attached topcell, you dereference caches's p_irq[4], which aliases what follows in memory (by chance, another port), and you get the error above.

Please see topcell.diff​ for a fix.

comment:2 Changed 15 years ago by Nicolas Pouillon

Priority: major → N/A
Type: defect → helpdesk
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