1a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew/* 2a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved. 3a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * 4a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * Redistribution and use in source and binary forms, with or without 5a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * modification, are permitted provided that the following conditions are met: 6a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * 7a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * Redistributions of source code must retain the above copyright notice, this 8a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * list of conditions and the following disclaimer. 9a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * 10a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * Redistributions in binary form must reproduce the above copyright notice, 11a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * this list of conditions and the following disclaimer in the documentation 12a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * and/or other materials provided with the distribution. 13a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * 14a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * Neither the name of ARM nor the names of its contributors may be used 15a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * to endorse or promote products derived from this software without specific 16a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * prior written permission. 17a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * 18a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * POSSIBILITY OF SUCH DAMAGE. 29a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew */ 30a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew#include <arch.h> 31a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew#include <asm_macros.S> 32a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew#include <context.h> 335e910074245fa180cfbe70d3c8bceeff1eaa026eAndrew Thoelke#include <cpu_data.h> 34a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew#include <plat_macros.S> 35e4d133899083fcb4874a70c3f82c296a89455ecdSandrine Bailleux#include <platform_def.h> 36a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 37626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .globl report_unhandled_exception 38626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .globl report_unhandled_interrupt 39626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .globl el3_panic 40a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 419c22b32300320c40aa36f73f84a51cdc5218780eAndrew Thoelke#if CRASH_REPORTING 42626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew#define REG_SIZE 0x8 43626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 44a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew /* ------------------------------------------------------ 45a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * The below section deals with dumping the system state 46a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * when an unhandled exception is taken in EL3. 47a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * The layout and the names of the registers which will 48a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * be dumped during a unhandled exception is given below. 49a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew * ------------------------------------------------------ 50a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew */ 51626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew.section .rodata.crash_prints, "aS" 52626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewprint_spacer: 53626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .asciz " =\t\t0x" 54626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 55626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewgp_regs: 56626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .asciz "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",\ 57626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",\ 58626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "x16", "x17", "x18", "x19", "x20", "x21", "x22",\ 59626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "x23", "x24", "x25", "x26", "x27", "x28", "x29", "" 60626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewel3_sys_regs: 61626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .asciz "scr_el3", "sctlr_el3", "cptr_el3", "tcr_el3",\ 62626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "daif", "mair_el3", "spsr_el3", "elr_el3", "ttbr0_el3",\ 63626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "esr_el3", "far_el3", "" 64626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 65626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewnon_el3_sys_regs: 66626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .asciz "spsr_el1", "elr_el1", "spsr_abt", "spsr_und",\ 67626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "spsr_irq", "spsr_fiq", "sctlr_el1", "actlr_el1", "cpacr_el1",\ 68626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "csselr_el1", "sp_el1", "esr_el1", "ttbr0_el1", "ttbr1_el1",\ 69626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "mair_el1", "amair_el1", "tcr_el1", "tpidr_el1", "tpidr_el0",\ 70626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "tpidrro_el0", "dacr32_el2", "ifsr32_el2", "par_el1",\ 71626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "mpidr_el1", "afsr0_el1", "afsr1_el1", "contextidr_el1",\ 72626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "vbar_el1", "cntp_ctl_el0", "cntp_cval_el0", "cntv_ctl_el0",\ 73626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew "cntv_cval_el0", "cntkctl_el1", "fpexc32_el2", "sp_el0", "" 74626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 75626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewpanic_msg: 76626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .asciz "PANIC in EL3 at x30 = 0x" 77626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewexcpt_msg: 78626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .asciz "Unhandled Exception in EL3.\nx30 =\t\t0x" 79626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewintr_excpt_msg: 80626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .asciz "Unhandled Interrupt Exception in EL3.\nx30 =\t\t0x" 81626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 82626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* 83626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * Helper function to print newline to console. 84a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew */ 85626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc print_newline 86626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov x0, '\n' 87626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b plat_crash_console_putc 88626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 89626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* 90626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * Helper function to print from crash buf. 91626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * The print loop is controlled by the buf size and 92626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * ascii reg name list which is passed in x6. The 93626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * function returns the crash buf address in x0. 94626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * Clobbers : x0 - x7, sp 95626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew */ 96626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc size_controlled_print 97626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Save the lr */ 98626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov sp, x30 99626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* load the crash buf address */ 100626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x7, tpidr_el3 101626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewtest_size_list: 102626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Calculate x5 always as it will be clobbered by asm_print_hex */ 103626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x5, tpidr_el3 104626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew add x5, x5, #CPU_DATA_CRASH_BUF_SIZE 105626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Test whether we have reached end of crash buf */ 106626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew cmp x7, x5 107626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b.eq exit_size_print 108626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew ldrb w4, [x6] 109626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Test whether we are at end of list */ 110626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew cbz w4, exit_size_print 111626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov x4, x6 112626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* asm_print_str updates x4 to point to next entry in list */ 113626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl asm_print_str 114626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* update x6 with the updated list pointer */ 115626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov x6, x4 116626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew adr x4, print_spacer 117626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl asm_print_str 118626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew ldr x4, [x7], #REG_SIZE 119626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl asm_print_hex 120626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl print_newline 121626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b test_size_list 122626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewexit_size_print: 123626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov x30, sp 124626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew ret 125626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 126626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* 127626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * Helper function to store x8 - x15 registers to 128626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * the crash buf. The system registers values are 129626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * copied to x8 to x15 by the caller which are then 130626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * copied to the crash buf by this function. 131626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * x0 points to the crash buf. It then calls 132626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * size_controlled_print to print to console. 133626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * Clobbers : x0 - x7, sp 134626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew */ 135626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc str_in_crash_buf_print 136626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* restore the crash buf address in x0 */ 137626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x0, tpidr_el3 138626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x8, x9, [x0] 139626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x10, x11, [x0, #REG_SIZE * 2] 140626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x12, x13, [x0, #REG_SIZE * 4] 141626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x14, x15, [x0, #REG_SIZE * 6] 142626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b size_controlled_print 143a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 144626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* ------------------------------------------------------ 145626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * This macro calculates the offset to crash buf from 146626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * cpu_data and stores it in tpidr_el3. It also saves x0 147626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * and x1 in the crash buf by using sp as a temporary 148626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * register. 149626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * ------------------------------------------------------ 150626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew */ 151626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew .macro prepare_crash_buf_save_x0_x1 152626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* we can corrupt this reg to free up x0 */ 153626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov sp, x0 154626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* tpidr_el3 contains the address to cpu_data structure */ 155626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x0, tpidr_el3 156626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Calculate the Crash buffer offset in cpu_data */ 157626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew add x0, x0, #CPU_DATA_CRASH_BUF_OFFSET 158626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Store crash buffer address in tpidr_el3 */ 159626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew msr tpidr_el3, x0 160626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew str x1, [x0, #REG_SIZE] 161a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew mov x1, sp 162626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew str x1, [x0] 163a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew .endm 164a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 165626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* ----------------------------------------------------- 166626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * This function allows to report a crash (if crash 167626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * reporting is enabled) when an unhandled exception 168626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * occurs. It prints the CPU state via the crash console 169626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * making use of the crash buf. This function will 170626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * not return. 171626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * ----------------------------------------------------- 172626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew */ 173626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc report_unhandled_exception 174626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew prepare_crash_buf_save_x0_x1 175626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew adr x0, excpt_msg 176626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov sp, x0 177626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* This call will not return */ 178626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b do_crash_reporting 179a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 180a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 181626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* ----------------------------------------------------- 182626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * This function allows to report a crash (if crash 183626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * reporting is enabled) when an unhandled interrupt 184626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * occurs. It prints the CPU state via the crash console 185626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * making use of the crash buf. This function will 186626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * not return. 187626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * ----------------------------------------------------- 188626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew */ 189626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc report_unhandled_interrupt 190626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew prepare_crash_buf_save_x0_x1 191626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew adr x0, intr_excpt_msg 192626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov sp, x0 193626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* This call will not return */ 194626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b do_crash_reporting 195a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 196626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* ----------------------------------------------------- 197626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * This function allows to report a crash (if crash 198626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * reporting is enabled) when panic() is invoked from 199626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * C Runtime. It prints the CPU state via the crash 200626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * console making use of the crash buf. This function 201626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * will not return. 202626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * ----------------------------------------------------- 203626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew */ 204626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc el3_panic 205626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew msr spsel, #1 206626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew prepare_crash_buf_save_x0_x1 207626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew adr x0, panic_msg 208626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov sp, x0 209626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* This call will not return */ 210626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b do_crash_reporting 211626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 212626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* ------------------------------------------------------------ 213626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * The common crash reporting functionality. It requires x0 214626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * and x1 has already been stored in crash buf, sp points to 215626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * crash message and tpidr_el3 contains the crash buf address. 216626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * The function does the following: 217626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Retrieve the crash buffer from tpidr_el3 218626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Store x2 to x6 in the crash buffer 219626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Initialise the crash console. 220626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Print the crash message by using the address in sp. 221626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Print x30 value to the crash console. 222626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Print x0 - x7 from the crash buf to the crash console. 223626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Print x8 - x29 (in groups of 8 registers) using the 224626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * crash buf to the crash console. 225626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Print el3 sys regs (in groups of 8 registers) using the 226626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * crash buf to the crash console. 227626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * - Print non el3 sys regs (in groups of 8 registers) using 228626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * the crash buf to the crash console. 229626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew * ------------------------------------------------------------ 230626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew */ 231626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc do_crash_reporting 232626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Retrieve the crash buf from tpidr_el3 */ 233626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x0, tpidr_el3 234626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Store x2 - x6, x30 in the crash buffer */ 235626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x2, x3, [x0, #REG_SIZE * 2] 236626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x4, x5, [x0, #REG_SIZE * 4] 237626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x6, x30, [x0, #REG_SIZE * 6] 238626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Initialize the crash console */ 239626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl plat_crash_console_init 240626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Verify the console is initialized */ 241626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew cbz x0, crash_panic 242626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Print the crash message. sp points to the crash message */ 243626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mov x4, sp 244626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl asm_print_str 245626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* load the crash buf address */ 246626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x0, tpidr_el3 247626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* report x30 first from the crash buf */ 248626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew ldr x4, [x0, #REG_SIZE * 7] 249626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl asm_print_hex 250626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl print_newline 251626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Load the crash buf address */ 252626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x0, tpidr_el3 253626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Now mov x7 into crash buf */ 254626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew str x7, [x0, #REG_SIZE * 7] 255626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 256626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Report x0 - x29 values stored in crash buf*/ 257626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Store the ascii list pointer in x6 */ 258626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew adr x6, gp_regs 259626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Print x0 to x7 from the crash buf */ 260626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl size_controlled_print 261626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Store x8 - x15 in crash buf and print */ 262626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 263626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Load the crash buf address */ 264626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x0, tpidr_el3 265626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Store the rest of gp regs and print */ 266626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x16, x17, [x0] 267626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x18, x19, [x0, #REG_SIZE * 2] 268626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x20, x21, [x0, #REG_SIZE * 4] 269626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x22, x23, [x0, #REG_SIZE * 6] 270626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl size_controlled_print 271626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Load the crash buf address */ 272626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x0, tpidr_el3 273626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x24, x25, [x0] 274626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x26, x27, [x0, #REG_SIZE * 2] 275626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew stp x28, x29, [x0, #REG_SIZE * 4] 276626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl size_controlled_print 277626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 278626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Print the el3 sys registers */ 279626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew adr x6, el3_sys_regs 280626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x8, scr_el3 281626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x9, sctlr_el3 282626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x10, cptr_el3 283626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x11, tcr_el3 284626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x12, daif 285626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x13, mair_el3 286626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x14, spsr_el3 287626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x15, elr_el3 288626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 289626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x8, ttbr0_el3 290626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x9, esr_el3 291626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x10, far_el3 292626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 293626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 294626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Print the non el3 sys registers */ 295626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew adr x6, non_el3_sys_regs 296626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x8, spsr_el1 297626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x9, elr_el1 298626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x10, spsr_abt 299626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x11, spsr_und 300626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x12, spsr_irq 301626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x13, spsr_fiq 302626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x14, sctlr_el1 303626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x15, actlr_el1 304626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 305626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x8, cpacr_el1 306626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x9, csselr_el1 307a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew mrs x10, sp_el1 308a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew mrs x11, esr_el1 309a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew mrs x12, ttbr0_el1 310a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew mrs x13, ttbr1_el1 311a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew mrs x14, mair_el1 312a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew mrs x15, amair_el1 313626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 314626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x8, tcr_el1 315626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x9, tpidr_el1 316626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x10, tpidr_el0 317626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x11, tpidrro_el0 318626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x12, dacr32_el2 319626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x13, ifsr32_el2 320626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x14, par_el1 321626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x15, mpidr_el1 322626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 323626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x8, afsr0_el1 324626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x9, afsr1_el1 325626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x10, contextidr_el1 326626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x11, vbar_el1 327626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x12, cntp_ctl_el0 328626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x13, cntp_cval_el0 329626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x14, cntv_ctl_el0 330626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x15, cntv_cval_el0 331626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 332626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x8, cntkctl_el1 333626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x9, fpexc32_el2 334626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew mrs x10, sp_el0 335626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew bl str_in_crash_buf_print 336626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 337d3f70af6e09d669da9c7d7890b7af5a0cdc4b3a5Soby Mathew /* Get the cpu specific registers to report */ 338d3f70af6e09d669da9c7d7890b7af5a0cdc4b3a5Soby Mathew bl do_cpu_reg_dump 339d3f70af6e09d669da9c7d7890b7af5a0cdc4b3a5Soby Mathew bl str_in_crash_buf_print 3408c106902368c40e14c558a0ab91cc57defdc7e81Soby Mathew 341626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Print the gic registers */ 342626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew plat_print_gic_regs 343626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 3448c106902368c40e14c558a0ab91cc57defdc7e81Soby Mathew /* Print the interconnect registers */ 3458c106902368c40e14c558a0ab91cc57defdc7e81Soby Mathew plat_print_interconnect_regs 3468c106902368c40e14c558a0ab91cc57defdc7e81Soby Mathew 347626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew /* Done reporting */ 348626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b crash_panic 349626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew 350626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew#else /* CRASH_REPORTING */ 351626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc report_unhandled_exception 352626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewreport_unhandled_interrupt: 353626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b crash_panic 3549c22b32300320c40aa36f73f84a51cdc5218780eAndrew Thoelke#endif /* CRASH_REPORING */ 3559c22b32300320c40aa36f73f84a51cdc5218780eAndrew Thoelke 356a43d431b80541ea436b71f967c5749babf978c7aSoby Mathew 357626ed510f179c905a699f4663ee933c10892b4c3Soby Mathewfunc crash_panic 358626ed510f179c905a699f4663ee933c10892b4c3Soby Mathew b crash_panic 359