plat/arm/board/common/aarch32/board_arm_helpers.S

   1 /*
   2  * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6 #include <asm_macros.S>
   7 #include <bl_common.h>
   8 #include <v2m_def.h>
   9
  10         .globl  plat_report_exception
  11
  12
  13         /* -------------------------------------------------------
  14          * void plat_report_exception(unsigned int type)
  15          * Function to report an unhandled exception
  16          * with platform-specific means.
  17          * On FVP platform, it updates the LEDs
  18          * to indicate where we are.
  19          * SYS_LED[0]   - 0x0
  20          * SYS_LED[2:1] - 0x0
  21          * SYS_LED[7:3] - Exception Mode.
  22          * Clobbers: r0-r1
  23          * -------------------------------------------------------
  24          */
  25 func plat_report_exception
  26         lsl     r0, r0, #V2M_SYS_LED_EC_SHIFT
  27         ldr     r1, =V2M_SYSREGS_BASE
  28         add     r1, r1, #V2M_SYS_LED
  29         str     r0, [r1]
  30         bx      lr
  31 endfunc plat_report_exception