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mem: Change memory defaults to be more representative

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Make the default memory type DDR3-1600 x64, and use the open-adaptive
page policy. This change is aiming to ensure that users by default are
using a realistic memory system.
This commit is contained in:
Andreas Hansson 2014-03-23 11:12:10 -04:00
parent bbbae677ed
commit 3dd1587afc
2 changed files with 3 additions and 3 deletions
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2
configs/common/Options.py
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@ -85,7 +85,7 @@ def addCommonOptions(parser):
parser.add_option("--list-mem-types", parser.add_option("--list-mem-types",
action="callback", callback=_listMemTypes, action="callback", callback=_listMemTypes,
help="List available memory types") help="List available memory types")
parser.add_option("--mem-type", type="choice", default="simple_mem", parser.add_option("--mem-type", type="choice", default="ddr3_1600_x64",
choices=MemConfig.mem_names(), choices=MemConfig.mem_names(),
help = "type of memory to use") help = "type of memory to use")
parser.add_option("--mem-channels", type="int", default=1, parser.add_option("--mem-channels", type="int", default=1,

4
src/mem/SimpleDRAM.py
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@ -72,7 +72,7 @@ class SimpleDRAM(AbstractMemory):
port = SlavePort("Slave port") port = SlavePort("Slave port")
# the basic configuration of the controller architecture # the basic configuration of the controller architecture
write_buffer_size = Param.Unsigned(32, "Number of write queue entries") write_buffer_size = Param.Unsigned(64, "Number of write queue entries")
read_buffer_size = Param.Unsigned(32, "Number of read queue entries") read_buffer_size = Param.Unsigned(32, "Number of read queue entries")
# threshold in percent for when to forcefully trigger writes and # threshold in percent for when to forcefully trigger writes and
@ -90,7 +90,7 @@ class SimpleDRAM(AbstractMemory):
# scheduler, address map and page policy # scheduler, address map and page policy
mem_sched_policy = Param.MemSched('frfcfs', "Memory scheduling policy") mem_sched_policy = Param.MemSched('frfcfs', "Memory scheduling policy")
addr_mapping = Param.AddrMap('RoRaBaChCo', "Address mapping policy") addr_mapping = Param.AddrMap('RoRaBaChCo', "Address mapping policy")
page_policy = Param.PageManage('open', "Page closure management policy") page_policy = Param.PageManage('open_adaptive', "Page management policy")
# enforce a limit on the number of accesses per row # enforce a limit on the number of accesses per row
max_accesses_per_row = Param.Unsigned(16, "Max accesses per row before " max_accesses_per_row = Param.Unsigned(16, "Max accesses per row before "