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Print newline after hex address in aarch64 el3_panic function 

Make the aarch64's el3_panic() function print a newline character after
PC address, otherwise the output can get mangled in one line with output
from other firmware. Here is an example of how the output of el3_panic()
got mangled with Linux' console output:

    ERROR:   Unhandled External Abort received on 0x80000001 at EL3!
    ERROR:    exception reason=1 syndrome=0x92000210
    PANIC at PC : 0x0000000004027400[13438.473133] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
    [13438.479255] rcu:     1-...0: (4 ticks this GP) idle=35e/1/0x4000000000000000 softirq=146459/146459 fqs=2625

The aarch32 version of this function already does this.

Signed-off-by: Pali Rohár <pali@kernel.org>
Change-Id: I9f0d032c6cd1e2be7a1837f9c8e8244d30633993
This commit is contained in:
Pali Rohár 2021-02-16 18:05:57 +01:00
parent 6630681458
commit 805f22babd
1 changed files with 3 additions and 0 deletions
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3
common/aarch64/debug.S
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@ -208,6 +208,9 @@ el3_panic:
sub x4, x4, #4
bl asm_print_hex
/* Print new line */
bl asm_print_newline
bl plat_crash_console_flush
_panic_handler: