riscv/rocket-chip
1
0
Fork 0
Code Releases Activity

Only use LSBs for HTIF control regs

Browse Source 
For now, at least...
This commit is contained in:
Andrew Waterman 2013-11-25 04:34:16 -08:00
parent 056bb156ca
commit acc0d2b06c
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
uncore/src/main/scala/htif.scala
View File

@ -196,6 +196,7 @@ class HTIF(w: Int, pcr_RESET: Int, nSCR: Int)(implicit conf: TileLinkConfigurati
io.mem.release.meta.valid := Bool(false) io.mem.release.meta.valid := Bool(false)
io.mem.release.data.valid := Bool(false) io.mem.release.data.valid := Bool(false)
val pcr_reset = UInt(pcr_RESET)(pcr_addr.getWidth-1,0)
val pcrReadData = Reg(Bits(width = io.cpu(0).pcr_rep.bits.getWidth)) val pcrReadData = Reg(Bits(width = io.cpu(0).pcr_rep.bits.getWidth))
for (i <- 0 until nTiles) { for (i <- 0 until nTiles) {
val my_reset = Reg(init=Bool(true)) val my_reset = Reg(init=Bool(true))
@ -203,7 +204,7 @@ class HTIF(w: Int, pcr_RESET: Int, nSCR: Int)(implicit conf: TileLinkConfigurati
val cpu = io.cpu(i) val cpu = io.cpu(i)
val me = pcr_coreid === UInt(i) val me = pcr_coreid === UInt(i)
cpu.pcr_req.valid := state === state_pcr_req && me && pcr_addr != UInt(pcr_RESET) cpu.pcr_req.valid := state === state_pcr_req && me && pcr_addr != pcr_reset
cpu.pcr_req.bits.rw := cmd === cmd_writecr cpu.pcr_req.bits.rw := cmd === cmd_writecr
cpu.pcr_req.bits.addr := pcr_addr cpu.pcr_req.bits.addr := pcr_addr
cpu.pcr_req.bits.data := pcr_wdata cpu.pcr_req.bits.data := pcr_wdata
@ -223,7 +224,7 @@ class HTIF(w: Int, pcr_RESET: Int, nSCR: Int)(implicit conf: TileLinkConfigurati
when (cpu.pcr_req.valid && cpu.pcr_req.ready) { when (cpu.pcr_req.valid && cpu.pcr_req.ready) {
state := state_pcr_resp state := state_pcr_resp
} }
when (state === state_pcr_req && me && pcr_addr === UInt(pcr_RESET)) { when (state === state_pcr_req && me && pcr_addr === pcr_reset) {
when (cmd === cmd_writecr) { when (cmd === cmd_writecr) {
my_reset := pcr_wdata(0) my_reset := pcr_wdata(0)
} }