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cpu/rocket: add quad-core (smp) variants

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- 4-core "full" (fpu-enabled) variants with double, quad mem. bus width
- 4-core "linux" (fpu-less) variant with single (64-bit) mem. bus width
This commit is contained in:
Gabriel Somlo 2021-09-22 16:51:19 -04:00
parent 901b19828c
commit 07e47d9357
1 changed files with 9 additions and 0 deletions
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9
litex/soc/cores/cpu/rocket/core.py
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@ -45,9 +45,12 @@ class Open(Signal): pass
CPU_VARIANTS = { CPU_VARIANTS = {
"standard": "freechips.rocketchip.system.LitexConfig", "standard": "freechips.rocketchip.system.LitexConfig",
"linux": "freechips.rocketchip.system.LitexLinuxConfig", "linux": "freechips.rocketchip.system.LitexLinuxConfig",
"linux4": "freechips.rocketchip.system.LitexLinux4Config",
"linuxd": "freechips.rocketchip.system.LitexLinuxDConfig", "linuxd": "freechips.rocketchip.system.LitexLinuxDConfig",
"linuxq": "freechips.rocketchip.system.LitexLinuxQConfig", "linuxq": "freechips.rocketchip.system.LitexLinuxQConfig",
"full": "freechips.rocketchip.system.LitexFullConfig", "full": "freechips.rocketchip.system.LitexFullConfig",
"full4d": "freechips.rocketchip.system.LitexFull4DConfig",
"full4q": "freechips.rocketchip.system.LitexFull4QConfig",
} }
# GCC Flags----------------------------------------------------------------------------------------- # GCC Flags-----------------------------------------------------------------------------------------
@ -55,9 +58,12 @@ CPU_VARIANTS = {
GCC_FLAGS = { GCC_FLAGS = {
"standard": "-march=rv64imac -mabi=lp64 ", "standard": "-march=rv64imac -mabi=lp64 ",
"linux": "-march=rv64imac -mabi=lp64 ", "linux": "-march=rv64imac -mabi=lp64 ",
"linux4": "-march=rv64imac -mabi=lp64 ",
"linuxd": "-march=rv64imac -mabi=lp64 ", "linuxd": "-march=rv64imac -mabi=lp64 ",
"linuxq": "-march=rv64imac -mabi=lp64 ", "linuxq": "-march=rv64imac -mabi=lp64 ",
"full": "-march=rv64imafdc -mabi=lp64 ", "full": "-march=rv64imafdc -mabi=lp64 ",
"full4d": "-march=rv64imafdc -mabi=lp64 ",
"full4q": "-march=rv64imafdc -mabi=lp64 ",
} }
# CPU Size Params ---------------------------------------------------------------------------------- # CPU Size Params ----------------------------------------------------------------------------------
@ -66,9 +72,12 @@ CPU_SIZE_PARAMS = {
# Variant : (mem_dw, mmio_dw, num_cores) # Variant : (mem_dw, mmio_dw, num_cores)
"standard": ( 64, 64, 1), "standard": ( 64, 64, 1),
"linux": ( 64, 64, 1), "linux": ( 64, 64, 1),
"linux4": ( 64, 64, 4),
"linuxd": ( 128, 64, 1), "linuxd": ( 128, 64, 1),
"linuxq": ( 256, 64, 1), "linuxq": ( 256, 64, 1),
"full": ( 64, 64, 1), "full": ( 64, 64, 1),
"full4d": ( 128, 64, 4),
"full4q": ( 256, 64, 4),
} }
# Rocket RV64 -------------------------------------------------------------------------------------- # Rocket RV64 --------------------------------------------------------------------------------------