diff options
author | Anup Patel <anup.patel@wdc.com> | 2020-06-22 08:38:44 +0530 |
---|---|---|
committer | Anup Patel <anup@brainfault.org> | 2020-07-09 23:04:23 +0530 |
commit | 2cb19ac699b51d38fba57f4acb1ce02f06e7548f (patch) | |
tree | 5fef42799cb4cc024905ca5d0d08f79bfb3b4117 | |
parent | 564ed97f618321b8499a3e8837c36f622ee8a893 (diff) | |
download | spike-2cb19ac699b51d38fba57f4acb1ce02f06e7548f.zip spike-2cb19ac699b51d38fba57f4acb1ce02f06e7548f.tar.gz spike-2cb19ac699b51d38fba57f4acb1ce02f06e7548f.tar.bz2 |
Add bootargs command-line option to Spike
We add bootargs command-line option to Spike which allows us to
provide custom kernel parameters to Linux and Xvisor.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
-rw-r--r-- | riscv/dts.cc | 17 | ||||
-rw-r--r-- | riscv/dts.h | 1 | ||||
-rw-r--r-- | riscv/sim.cc | 7 | ||||
-rw-r--r-- | riscv/sim.h | 3 | ||||
-rw-r--r-- | spike_main/spike.cc | 5 |
5 files changed, 25 insertions, 8 deletions
diff --git a/riscv/dts.cc b/riscv/dts.cc index 6a38ba0..56b76e6 100644 --- a/riscv/dts.cc +++ b/riscv/dts.cc @@ -11,6 +11,7 @@ std::string make_dts(size_t insns_per_rtc_tick, size_t cpu_hz, reg_t initrd_start, reg_t initrd_end, + const char* bootargs, std::vector<processor_t*> procs, std::vector<std::pair<reg_t, mem_t*>> mems) { @@ -25,12 +26,22 @@ std::string make_dts(size_t insns_per_rtc_tick, size_t cpu_hz, " model = \"ucbbar,spike-bare\";\n" " chosen {\n"; if (initrd_start < initrd_end) { - s << " bootargs = \"root=/dev/ram console=hvc0 earlycon=sbi\";\n" - " linux,initrd-start = <" << (size_t)initrd_start << ">;\n" + s << " linux,initrd-start = <" << (size_t)initrd_start << ">;\n" " linux,initrd-end = <" << (size_t)initrd_end << ">;\n"; + if (!bootargs) + bootargs = "root=/dev/ram console=hvc0 earlycon=sbi"; } else { - s << " bootargs = \"console=hvc0 earlycon=sbi\";\n"; + if (!bootargs) + bootargs = "console=hvc0 earlycon=sbi"; } + s << " bootargs = \""; + for (size_t i = 0; i < strlen(bootargs); i++) { + if (bootargs[i] == '"') + s << '\\' << bootargs[i]; + else + s << bootargs[i]; + } + s << "\";\n"; s << " };\n" " cpus {\n" " #address-cells = <1>;\n" diff --git a/riscv/dts.h b/riscv/dts.h index 1c3f701..1f01e0f 100644 --- a/riscv/dts.h +++ b/riscv/dts.h @@ -8,6 +8,7 @@ std::string make_dts(size_t insns_per_rtc_tick, size_t cpu_hz, reg_t initrd_start, reg_t initrd_end, + const char* bootargs, std::vector<processor_t*> procs, std::vector<std::pair<reg_t, mem_t*>> mems); diff --git a/riscv/sim.cc b/riscv/sim.cc index b25d79e..2aced1b 100644 --- a/riscv/sim.cc +++ b/riscv/sim.cc @@ -28,7 +28,7 @@ static void handle_signal(int sig) sim_t::sim_t(const char* isa, const char* priv, const char* varch, size_t nprocs, bool halted, bool real_time_clint, - reg_t initrd_start, reg_t initrd_end, + reg_t initrd_start, reg_t initrd_end, const char* bootargs, reg_t start_pc, std::vector<std::pair<reg_t, mem_t*>> mems, std::vector<std::pair<reg_t, abstract_device_t*>> plugin_devices, const std::vector<std::string>& args, @@ -42,6 +42,7 @@ sim_t::sim_t(const char* isa, const char* priv, const char* varch, procs(std::max(nprocs, size_t(1))), initrd_start(initrd_start), initrd_end(initrd_end), + bootargs(bootargs), start_pc(start_pc), dtb_file(dtb_file ? dtb_file : ""), dtb_enabled(dtb_enabled), @@ -230,7 +231,7 @@ void sim_t::make_dtb() dtb = strstream.str(); } else { - dts = make_dts(INSNS_PER_RTC_TICK, CPU_HZ, initrd_start, initrd_end, procs, mems); + dts = make_dts(INSNS_PER_RTC_TICK, CPU_HZ, initrd_start, initrd_end, bootargs, procs, mems); dtb = dts_compile(dts); } } @@ -271,7 +272,7 @@ void sim_t::set_rom() dtb = strstream.str(); } else { - dts = make_dts(INSNS_PER_RTC_TICK, CPU_HZ, initrd_start, initrd_end, procs, mems); + dts = make_dts(INSNS_PER_RTC_TICK, CPU_HZ, initrd_start, initrd_end, bootargs, procs, mems); dtb = dts_compile(dts); } diff --git a/riscv/sim.h b/riscv/sim.h index 7cf83d6..c6e5582 100644 --- a/riscv/sim.h +++ b/riscv/sim.h @@ -25,7 +25,7 @@ class sim_t : public htif_t, public simif_t public: sim_t(const char* isa, const char* priv, const char* varch, size_t _nprocs, bool halted, bool real_time_clint, - reg_t initrd_start, reg_t initrd_end, + reg_t initrd_start, reg_t initrd_end, const char* bootargs, reg_t start_pc, std::vector<std::pair<reg_t, mem_t*>> mems, std::vector<std::pair<reg_t, abstract_device_t*>> plugin_devices, const std::vector<std::string>& args, const std::vector<int> hartids, @@ -64,6 +64,7 @@ private: std::vector<processor_t*> procs; reg_t initrd_start; reg_t initrd_end; + const char* bootargs; reg_t start_pc; std::string dts; std::string dtb; diff --git a/spike_main/spike.cc b/spike_main/spike.cc index d4e572c..1f5b771 100644 --- a/spike_main/spike.cc +++ b/spike_main/spike.cc @@ -51,6 +51,7 @@ 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, " --bootargs=<args> Provide custom bootargs for kernel [default: console=hvc0 earlycon=sbi]\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 " @@ -191,6 +192,7 @@ int main(int argc, char** argv) size_t nprocs = 1; size_t initrd_size; reg_t initrd_start = 0, initrd_end = 0; + const char* bootargs = NULL; reg_t start_pc = reg_t(-1); std::vector<std::pair<reg_t, mem_t*>> mems; std::vector<std::pair<reg_t, abstract_device_t*>> plugin_devices; @@ -301,6 +303,7 @@ int main(int argc, char** argv) parser.option(0, "disable-dtb", 0, [&](const char *s){dtb_enabled = false;}); parser.option(0, "dtb", 1, [&](const char *s){dtb_file = s;}); parser.option(0, "initrd", 1, [&](const char* s){initrd = s;}); + parser.option(0, "bootargs", 1, [&](const char* s){bootargs = 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); @@ -351,7 +354,7 @@ int main(int argc, char** argv) } sim_t s(isa, priv, varch, nprocs, halted, real_time_clint, - initrd_start, initrd_end, start_pc, mems, plugin_devices, htif_args, + initrd_start, initrd_end, bootargs, start_pc, mems, plugin_devices, htif_args, std::move(hartids), dm_config, log_path, dtb_enabled, dtb_file); std::unique_ptr<remote_bitbang_t> remote_bitbang((remote_bitbang_t *) NULL); std::unique_ptr<jtag_dtm_t> jtag_dtm( |