Error While configuring Berkeley boot loader

[sramichetty20019]

Hello Everyone,

I am trying to run linux kernel on rocketchip , i believe this is possible using the Berkeley boot loader so once i build the rocketchip i get an executable, which i can be used something like this ..
command: ./emulatorDefaulrocketconfig bbl

The reason to do this is my binaries have syscalls which cannot be used along with proxy kernel

For this purpose, I am trying to configure the Berkeley bootloader
I generated the vmlinux kernel binary
then I ran the following steps in riscv-pk directory
mkdir build
cd build
./configure --prefix=$RISCV --host=riscv64-unknown-elf --with-payload=linux-4.6.2/vmlinux
make

I encountered the following error :
riscv64-unknown-elf-gcc -MMD -MP -Wall -Werror -D__NO_INLINE__ -mcmodel=medany -O2 -std=gnu99 -Wno-unused -Wno-attributes -fno-delete-null-pointer-checks -DBBL_PAYLOAD="linux-4.6.2/vmlinux" -I. -I./bbl -c ./bbl/configstring.c
riscv64-unknown-elf-gcc -MMD -MP -Wall -Werror -D__NO_INLINE__ -mcmodel=medany -O2 -std=gnu99 -Wno-unused -Wno-attributes -fno-delete-null-pointer-checks -DBBL_PAYLOAD="linux-4.6.2/vmlinux" -I. -I./bbl -c ./bbl/kernel_elf.c
riscv64-unknown-elf-gcc -MMD -MP -Wall -Werror -D__NO_INLINE__ -mcmodel=medany -O2 -std=gnu99 -Wno-unused -Wno-attributes -fno-delete-null-pointer-checks -DBBL_PAYLOAD="linux-4.6.2/vmlinux" -I. -I./bbl -c ./bbl/logo.c
riscv64-unknown-elf-gcc -MMD -MP -Wall -Werror -D__NO_INLINE__ -mcmodel=medany -O2 -std=gnu99 -Wno-unused -Wno-attributes -fno-delete-null-pointer-checks -DBBL_PAYLOAD="linux-4.6.2/vmlinux" -I. -I./bbl -c ./bbl/mtrap.c
./bbl/mtrap.c: Assembler messages:
./bbl/mtrap.c:130: Error: unrecognized opcode fence.i', extension zifencei' required
make: *** [Makefile:300: mtrap.o] Error 1

If I execute the above steps in other way I get the following error :

Steps:
mkdir build
cd build
sudo ../configure --host=riscv64-unknown-linux-gnu --with payload=/home/srinija/linux/vmlinux --prefix=/opt/riscv/
sudo make -j 24
Error :
gcc: error: unrecognized argument in option ‘-mcmodel=medany’
gcc: note: valid arguments to ‘-mcmodel=’ are: 32 kernel large medium small
make: *** [Makefile:336: file.o] Error 1
make: *** Waiting for unfinished jobs....
make: *** [Makefile:336: syscall.o] Error 1
gcc: error: unrecognized argument in option ‘-mcmodel=medany’
gcc: note: valid arguments to ‘-mcmodel=’ are: 32 kernel large medium small
gcc: error: unrecognized argument in option ‘-mcmodel=medany’
gcc: note: valid arguments to ‘-mcmodel=’ are: 32 kernel large medium small
make: *** [Makefile:336: handlers.o] Error 1
gcc: error: unrecognized argument in option ‘-mcmodel=medany’
gcc: note: valid arguments to ‘-mcmodel=’ are: 32 kernel large medium small
gcc: error: unrecognized argument in option ‘-mcmodel=medany’
gcc: note: valid arguments to ‘-mcmodel=’ are: 32 kernel large medium small
make: *** [Makefile:336: frontend.o] Error 1
make: *** [Makefile:336: console.o] Error 1
make: *** [Makefile:336: usermem.o] Error 1
make: *** [Makefile:336: elf.o] Error 1
gcc: error: unrecognized argument in option ‘-mcmodel=medany’
gcc: note: valid arguments to ‘-mcmodel=’ are: 32 kernel large medium small
make: *** [Makefile:336: mmap.o] Error 1
make: *** [Makefile:336: entry.o] Error 1

Can anyone please tell me how to solve the above errors, I also configured riscv-tool-chain properly, I have both newlib and glibc toolchain flavors installed

Regards
Srinija

[Lester-1]

I also encountered this problem, did you find a solution?

[sramichetty20019]

I couldn't fix it, however, I posted the same question on Chipyard Community this was the response I received. I hope it's useful for you ...

"BBL is no longer maintained or supported. Please use OpenSBI.

A flow demonstrating how to boot Linux with OpenSBI is included in Firemarshal, which is part of Chipyard. "