tree a7f75f357dd00172eb4b0d55be252eaa81eb0888
parent 16690bc2890ce93c1f40056e949ab98a4f4fba17
author kunpai <kunpai@ucdavis.edu> 1662756616 -0700
committer Kunal Pai <kunpai@ucdavis.edu> 1663857880 +0000

stdlib: Added RiscvMatched prebuilt board

Modeled after the HiFive Unmatched.

For the cache, we inherited from AbstractClassicCacheHierarchy and
AbstractTwoLevelCacheHierarchy to make a PrivateL1PrivateL2 hierarchy
with the same associativity and sizes as the board. However, the L2
Size is kept as a parameter that can be set by the user.

The core is in-order, therefore we inherited from RISC-V MinorCPU and
used the same pipeline parameters as the ARM HPI CPU, except the
decodeToExecuteForwardDelay, which was increased to 2 to avoid a
PMC access fault.

For the processor, we initialized the core with an ID so that we can
return 4 cores in FS mode, which is the same as the real system,
and 1 in SE mode.

For the memory, we just have a single channel DDR4_2400 with a size of
16 GB and starting at 0x80000000.

For the board, we declared a Boolean variable as a parameter to assign
whether it is in FS mode or not. We inherited from KernelDiskWorkload
and SEBinaryWorkload and initialized the components of the board
according to the Boolean. The other parameters are the clock frequency
and the L2 cache size.

Jira Issue: https://gem5.atlassian.net/browse/GEM5-1257

Change-Id: Ic2c066bb3a41dc2f42566ce971f9a665542f9771
Co-authored-by: Jasjeet Rangi <jasrangi@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/63411
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>