minor tweaks for eos18 tapeout (SRAM r/w port ordering, etc)
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@ -603,7 +603,10 @@ class Control(implicit conf: RocketConfiguration) extends Component
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class Scoreboard
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{
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val r = Reg(resetVal = Bits(0))
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// val r = Reg(resetVal = Bits(0))
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// RIMAS: explicitly set width to 32, otherwise Chisel would set it to 1024
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// and cause a ton of warnings during synthesis
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val r = Reg(resetVal = Bits(0,32))
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var next = r
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var ens = Bool(false)
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def apply(addr: UFix) = r(addr)
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@ -183,7 +183,8 @@ class ICache(implicit c: ICacheConfig, lnconf: LogicalNetworkConfiguration) exte
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val tag = c.code.encode(s2_tag)
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tag_array.write(s2_idx, Fill(c.assoc, tag), wmask)
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}
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/*.else*/when (s0_valid) { // uncomment ".else" to infer 6T SRAM
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// /*.else*/when (s0_valid) { // uncomment ".else" to infer 6T SRAM
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.elsewhen (s0_valid) {
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tag_rdata := tag_array(s0_pgoff(c.untagbits-1,c.offbits))
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}
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@ -227,7 +228,8 @@ class ICache(implicit c: ICacheConfig, lnconf: LogicalNetworkConfiguration) exte
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val d = io.mem.grant.bits.payload.data
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data_array(Cat(s2_idx,rf_cnt)) := c.code.encode(d)
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}
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/*.else*/when (s0_valid) { // uncomment ".else" to infer 6T SRAM
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// /*.else*/when (s0_valid) { // uncomment ".else" to infer 6T SRAM
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.elsewhen (s0_valid) {
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s1_dout := data_array(s0_pgoff(c.untagbits-1,c.offbits-rf_cnt.getWidth))
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}
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// if s1_tag_match is critical, replace with partial tag check
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@ -577,15 +577,15 @@ class MetaDataArray(implicit conf: DCacheConfig) extends Component {
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val tags = Mem(conf.sets, seqRead = true) { UFix(width = metabits*conf.ways) }
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val tag = Reg{UFix()}
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when (io.read.valid) {
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tag := tags(io.read.bits.addr(conf.untagbits-1,conf.offbits))
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}
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when (rst || io.write.valid) {
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val addr = Mux(rst, rst_cnt, io.write.bits.idx)
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val data = Cat(Mux(rst, conf.co.newStateOnFlush, io.write.bits.data.state), io.write.bits.data.tag)
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val mask = Mux(rst, Fix(-1), io.write.bits.way_en)
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tags.write(addr, Fill(conf.ways, data), FillInterleaved(metabits, mask))
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}
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when (io.read.valid) {
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tag := tags(io.read.bits.addr(conf.untagbits-1,conf.offbits))
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}
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for (w <- 0 until conf.ways) {
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val m = tag(metabits*(w+1)-1, metabits*w)
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