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author | Tim Newsome <tim@sifive.com> | 2018-02-27 12:30:46 -0800 |
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committer | Tim Newsome <tim@sifive.com> | 2018-02-27 12:30:46 -0800 |
commit | aa8cbb1ccd3856fd5e0437b0e24cfd7a3b794b8e (patch) | |
tree | 5ce67dd1233646c36bd8b5c0189618f4be1d767c /spike_main | |
parent | 0329b0741a698f102d64be4f0538427978bacb83 (diff) | |
download | riscv-isa-sim-aa8cbb1ccd3856fd5e0437b0e24cfd7a3b794b8e.zip riscv-isa-sim-aa8cbb1ccd3856fd5e0437b0e24cfd7a3b794b8e.tar.gz riscv-isa-sim-aa8cbb1ccd3856fd5e0437b0e24cfd7a3b794b8e.tar.bz2 |
Add debug module authentication.
Off by default, enabled with --debug-auth.
The protocol is very simple (definitely not secure) to allow debuggers
to test their authentication feature. To authenticate a debugger must:
1. Read authdata
2. Write to authdata the value that it just read, plus 1
Diffstat (limited to 'spike_main')
-rw-r--r-- | spike_main/spike.cc | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/spike_main/spike.cc b/spike_main/spike.cc index f77d488..eb57baf 100644 --- a/spike_main/spike.cc +++ b/spike_main/spike.cc @@ -36,9 +36,10 @@ static void help() fprintf(stderr, " --extlib=<name> Shared library to load\n"); fprintf(stderr, " --rbb-port=<port> Listen on <port> for remote bitbang connection\n"); fprintf(stderr, " --dump-dts Print device tree string and exit\n"); - fprintf(stderr, " --progsize=<words> progsize for the debug module [default 2]\n"); - fprintf(stderr, " --debug-sba=<bits> debug bus master supports up to " + fprintf(stderr, " --progsize=<words> Progsize for the debug module [default 2]\n"); + fprintf(stderr, " --debug-sba=<bits> Debug bus master supports up to " "<bits> wide accesses [default 0]\n"); + fprintf(stderr, " --debug-auth Debug module requires debugger to authenticate\n"); exit(1); } @@ -92,6 +93,7 @@ int main(int argc, char** argv) bool use_rbb = false; unsigned progsize = 2; unsigned max_bus_master_bits = 0; + bool require_authentication = false; std::vector<int> hartids; auto const hartids_parser = [&](const char *s) { @@ -135,6 +137,8 @@ int main(int argc, char** argv) parser.option(0, "progsize", 1, [&](const char* s){progsize = atoi(s);}); parser.option(0, "debug-sba", 1, [&](const char* s){max_bus_master_bits = atoi(s);}); + parser.option(0, "debug-auth", 0, + [&](const char* s){require_authentication = true;}); auto argv1 = parser.parse(argv); std::vector<std::string> htif_args(argv1, (const char*const*)argv + argc); @@ -142,7 +146,7 @@ int main(int argc, char** argv) mems = make_mems("2048"); sim_t s(isa, nprocs, halted, start_pc, mems, htif_args, std::move(hartids), - progsize, max_bus_master_bits); + progsize, max_bus_master_bits, require_authentication); std::unique_ptr<remote_bitbang_t> remote_bitbang((remote_bitbang_t *) NULL); std::unique_ptr<jtag_dtm_t> jtag_dtm(new jtag_dtm_t(&s.debug_module)); if (use_rbb) { |