diff options
| -rw-r--r-- | sys/conf/options.riscv | 1 | ||||
| -rw-r--r-- | sys/riscv/riscv/locore.S | 11 |
2 files changed, 12 insertions, 0 deletions
diff --git a/sys/conf/options.riscv b/sys/conf/options.riscv index c263bd8..0404654 100644 --- a/sys/conf/options.riscv +++ b/sys/conf/options.riscv @@ -2,3 +2,4 @@ RISCV opt_global.h VFP opt_global.h +DDR_CLEAR_SIZE opt_global.h diff --git a/sys/riscv/riscv/locore.S b/sys/riscv/riscv/locore.S index ef81686..1c2063a 100644 --- a/sys/riscv/riscv/locore.S +++ b/sys/riscv/riscv/locore.S @@ -126,6 +126,17 @@ _start: csrr a0, mhartid bnez a0, mpentry +#if defined(DDR_CLEAR_SIZE) + /* Clear DDR memory */ + la t0, _end + li t1, DDR_CLEAR_SIZE +1: + sd zero, 0(t0) + addi t0, t0, 8 + bltu t0, t1, 1b + /* End */ +#endif + /* Build event queue for current core */ build_ring |
