RISC-V: Do not rely on initrd_start/end computed during early dt parsing
Currently, initrd_start/end are computed during early_init_dt_scan
but used during arch_setup. We will get the following panic if initrd is used
and CONFIG_DEBUG_VIRTUAL is turned on.
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] kernel BUG at arch/riscv/mm/physaddr.c:33!
[ 0.000000] Kernel BUG [#1]
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.8.0-rc4-00015-ged0b226fed02 #886
[ 0.000000] epc: ffffffe0002058d2 ra : ffffffe0000053f0 sp : ffffffe001001f40
[ 0.000000] gp : ffffffe00106e250 tp : ffffffe001009d40 t0 : ffffffe00107ee28
[ 0.000000] t1 : 0000000000000000 t2 : ffffffe000a2e880 s0 : ffffffe001001f50
[ 0.000000] s1 : ffffffe0001383e8 a0 : ffffffe00c087e00 a1 : 0000000080200000
[ 0.000000] a2 : 00000000010bf000 a3 : ffffffe00106f3c8 a4 : ffffffe0010bf000
[ 0.000000] a5 : ffffffe000000000 a6 : 0000000000000006 a7 : 0000000000000001
[ 0.000000] s2 : ffffffe00106f068 s3 : ffffffe00106f070 s4 : 0000000080200000
[ 0.000000] s5 : 0000000082200000 s6 : 0000000000000000 s7 : 0000000000000000
[ 0.000000] s8 : 0000000080011010 s9 : 0000000080012700 s10: 0000000000000000
[ 0.000000] s11: 0000000000000000 t3 : 000000000001fe30 t4 : 000000000001fe30
[ 0.000000] t5 : 0000000000000000 t6 : ffffffe00107c471
[ 0.000000] status: 0000000000000100 badaddr: 0000000000000000 cause: 0000000000000003
[ 0.000000] random: get_random_bytes called from print_oops_end_marker+0x22/0x46 with crng_init=0
To avoid the error, initrd_start/end can be computed from phys_initrd_start/size
in setup itself. It also improves the initrd placement by aligning the start
and size with the page size.
Fixes: 76d2a0493a17 ("RISC-V: Init and Halt Code")
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
1 file changed
