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| author | Anup Patel <anup.patel@wdc.com> | 2020-02-15 19:22:35 +0530 |
|---|---|---|
| committer | Chih-Min Chao <chihmin.chao@sifive.com> | 2020-02-19 18:52:50 -0800 |
| commit | fbddad3d49da510f34b0b874d097b8c87d47309b (patch) | |
| tree | c5412ae700a3185cc54bc50ac3a43e5d0880122a /spike_main | |
| parent | 08cf745aaab48d67fafc995663ec96757ff6b816 (diff) | |
| download | spike-fbddad3d49da510f34b0b874d097b8c87d47309b.zip spike-fbddad3d49da510f34b0b874d097b8c87d47309b.tar.gz spike-fbddad3d49da510f34b0b874d097b8c87d47309b.tar.bz2 | |
Add optional support for real-time clint
This patch adds optional support clint timer incrementing at
real-time rate. This can be enabled by passing command line
parameter "--real-time-clint".
This feature can be used for:
1. Checking whether any code addition to Spike is slowing down
simulation too much
2. Comparing run-time for software on Spike with other functional
simulators (such as QEMU)
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'spike_main')
| -rw-r--r-- | spike_main/spike.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/spike_main/spike.cc b/spike_main/spike.cc index f56337c..e652a33 100644 --- a/spike_main/spike.cc +++ b/spike_main/spike.cc @@ -54,6 +54,7 @@ static void help(int exit_code = 1) fprintf(stderr, " --dump-dts Print device tree string and exit\n"); fprintf(stderr, " --disable-dtb Don't write the device tree blob into memory\n"); fprintf(stderr, " --initrd=<path> Load kernel initrd into memory\n"); + fprintf(stderr, " --real-time-clint Increment clint time at real-time rate\n"); fprintf(stderr, " --dm-progsize=<words> Progsize for the debug module [default 2]\n"); fprintf(stderr, " --dm-sba=<bits> Debug bus master supports up to " "<bits> wide accesses [default 0]\n"); @@ -146,6 +147,7 @@ int main(int argc, char** argv) bool log = false; bool dump_dts = false; bool dtb_enabled = true; + bool real_time_clint = false; size_t nprocs = 1; size_t initrd_size; reg_t initrd_start = 0, initrd_end = 0; @@ -272,6 +274,7 @@ int main(int argc, char** argv) parser.option(0, "vector-mistrap", 0, [&](const char *s){g_vector_mistrap = true;}); parser.option(0, "disable-dtb", 0, [&](const char *s){dtb_enabled = false;}); parser.option(0, "initrd", 1, [&](const char* s){initrd = s;}); + parser.option(0, "real-time-clint", 0, [&](const char *s){real_time_clint = true;}); parser.option(0, "extlib", 1, [&](const char *s){ void *lib = dlopen(s, RTLD_NOW | RTLD_GLOBAL); if (lib == NULL) { @@ -321,7 +324,8 @@ int main(int argc, char** argv) } } - sim_t s(isa, priv, varch, nprocs, halted, initrd_start, initrd_end, start_pc, mems, plugin_devices, htif_args, + sim_t s(isa, priv, varch, nprocs, halted, real_time_clint, + initrd_start, initrd_end, start_pc, mems, plugin_devices, htif_args, std::move(hartids), dm_config); std::unique_ptr<remote_bitbang_t> remote_bitbang((remote_bitbang_t *) NULL); std::unique_ptr<jtag_dtm_t> jtag_dtm( |