| /* |
| * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of ARM nor the names of its contributors may be used |
| * to endorse or promote products derived from this software without specific |
| * prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <context.h> |
| #include <plat_macros.S> |
| #include <platform_def.h> |
| |
| .globl get_crash_stack |
| .globl dump_state_and_die |
| .globl dump_intr_state_and_die |
| |
| /* ------------------------------------------------------ |
| * The below section deals with dumping the system state |
| * when an unhandled exception is taken in EL3. |
| * The layout and the names of the registers which will |
| * be dumped during a unhandled exception is given below. |
| * ------------------------------------------------------ |
| */ |
| .section .rodata.dump_reg_name, "aS" |
| caller_saved_regs: .asciz "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",\ |
| "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", "x16",\ |
| "x17", "x18", "" |
| |
| callee_saved_regs: .asciz "x19", "x20", "x21", "x22", "x23", "x24",\ |
| "x25", "x26", "x27", "x28", "x29", "x30", "" |
| |
| el3_sys_regs: .asciz "scr_el3", "sctlr_el3", "cptr_el3", "tcr_el3",\ |
| "daif", "mair_el3", "spsr_el3", "elr_el3", "ttbr0_el3", "esr_el3",\ |
| "sp_el3", "far_el3", "" |
| |
| non_el3_sys_0_regs: .asciz "spsr_el1", "elr_el1", "spsr_abt", "spsr_und",\ |
| "spsr_irq", "spsr_fiq", "sctlr_el1", "actlr_el1", "cpacr_el1",\ |
| "csselr_el1", "sp_el1", "esr_el1", "ttbr0_el1", "ttbr1_el1",\ |
| "mair_el1", "amair_el1", "tcr_el1", "tpidr_el1", "" |
| |
| non_el3_sys_1_regs: .asciz "tpidr_el0", "tpidrro_el0", "dacr32_el2",\ |
| "ifsr32_el2", "par_el1", "far_el1", "afsr0_el1", "afsr1_el1",\ |
| "contextidr_el1", "vbar_el1", "cntp_ctl_el0", "cntp_cval_el0",\ |
| "cntv_ctl_el0", "cntv_cval_el0", "cntkctl_el1", "fpexc32_el2",\ |
| "sp_el0", "" |
| |
| /* ----------------------------------------------------- |
| * Currently we are stack limited. Hence make sure that |
| * we dont try to dump more than 20 registers using the |
| * stack. |
| * ----------------------------------------------------- |
| */ |
| |
| #define REG_SIZE 0x8 |
| |
| /* The caller saved registers are X0 to X18 */ |
| #define CALLER_SAVED_REG_SIZE (20 * REG_SIZE) |
| /* The caller saved registers are X19 to X30 */ |
| #define CALLEE_SAVED_REG_SIZE (12 * REG_SIZE) |
| /* The EL3 sys regs*/ |
| #define EL3_SYS_REG_SIZE (12 * REG_SIZE) |
| /* The non EL3 sys regs set-0 */ |
| #define NON_EL3_SYS_0_REG_SIZE (18 * REG_SIZE) |
| /* The non EL3 sys regs set-1 */ |
| #define NON_EL3_SYS_1_REG_SIZE (18 * REG_SIZE) |
| |
| .macro print_caller_saved_regs |
| sub sp, sp, #CALLER_SAVED_REG_SIZE |
| stp x0, x1, [sp] |
| stp x2, x3, [sp, #(REG_SIZE * 2)] |
| stp x4, x5, [sp, #(REG_SIZE * 4)] |
| stp x6, x7, [sp, #(REG_SIZE * 6)] |
| stp x8, x9, [sp, #(REG_SIZE * 8)] |
| stp x10, x11, [sp, #(REG_SIZE * 10)] |
| stp x12, x13, [sp, #(REG_SIZE * 12)] |
| stp x14, x15, [sp, #(REG_SIZE * 14)] |
| stp x16, x17, [sp, #(REG_SIZE * 16)] |
| stp x18, xzr, [sp, #(REG_SIZE * 18)] |
| adr x0, caller_saved_regs |
| mov x1, sp |
| bl print_string_value |
| add sp, sp, #CALLER_SAVED_REG_SIZE |
| .endm |
| |
| .macro print_callee_saved_regs |
| sub sp, sp, CALLEE_SAVED_REG_SIZE |
| stp x19, x20, [sp] |
| stp x21, x22, [sp, #(REG_SIZE * 2)] |
| stp x23, x24, [sp, #(REG_SIZE * 4)] |
| stp x25, x26, [sp, #(REG_SIZE * 6)] |
| stp x27, x28, [sp, #(REG_SIZE * 8)] |
| stp x29, x30, [sp, #(REG_SIZE * 10)] |
| adr x0, callee_saved_regs |
| mov x1, sp |
| bl print_string_value |
| add sp, sp, #CALLEE_SAVED_REG_SIZE |
| .endm |
| |
| .macro print_el3_sys_regs |
| sub sp, sp, #EL3_SYS_REG_SIZE |
| mrs x9, scr_el3 |
| mrs x10, sctlr_el3 |
| mrs x11, cptr_el3 |
| mrs x12, tcr_el3 |
| mrs x13, daif |
| mrs x14, mair_el3 |
| mrs x15, spsr_el3 /*save the elr and spsr regs seperately*/ |
| mrs x16, elr_el3 |
| mrs x17, ttbr0_el3 |
| mrs x8, esr_el3 |
| mrs x7, far_el3 |
| |
| stp x9, x10, [sp] |
| stp x11, x12, [sp, #(REG_SIZE * 2)] |
| stp x13, x14, [sp, #(REG_SIZE * 4)] |
| stp x15, x16, [sp, #(REG_SIZE * 6)] |
| stp x17, x8, [sp, #(REG_SIZE * 8)] |
| stp x0, x7, [sp, #(REG_SIZE * 10)] /* sp_el3 is in x0 */ |
| |
| adr x0, el3_sys_regs |
| mov x1, sp |
| bl print_string_value |
| add sp, sp, #EL3_SYS_REG_SIZE |
| .endm |
| |
| .macro print_non_el3_sys_0_regs |
| sub sp, sp, #NON_EL3_SYS_0_REG_SIZE |
| mrs x9, spsr_el1 |
| mrs x10, elr_el1 |
| mrs x11, spsr_abt |
| mrs x12, spsr_und |
| mrs x13, spsr_irq |
| mrs x14, spsr_fiq |
| mrs x15, sctlr_el1 |
| mrs x16, actlr_el1 |
| mrs x17, cpacr_el1 |
| mrs x8, csselr_el1 |
| |
| stp x9, x10, [sp] |
| stp x11, x12, [sp, #(REG_SIZE * 2)] |
| stp x13, x14, [sp, #(REG_SIZE * 4)] |
| stp x15, x16, [sp, #(REG_SIZE * 6)] |
| stp x17, x8, [sp, #(REG_SIZE * 8)] |
| |
| mrs x10, sp_el1 |
| mrs x11, esr_el1 |
| mrs x12, ttbr0_el1 |
| mrs x13, ttbr1_el1 |
| mrs x14, mair_el1 |
| mrs x15, amair_el1 |
| mrs x16, tcr_el1 |
| mrs x17, tpidr_el1 |
| |
| stp x10, x11, [sp, #(REG_SIZE * 10)] |
| stp x12, x13, [sp, #(REG_SIZE * 12)] |
| stp x14, x15, [sp, #(REG_SIZE * 14)] |
| stp x16, x17, [sp, #(REG_SIZE * 16)] |
| |
| adr x0, non_el3_sys_0_regs |
| mov x1, sp |
| bl print_string_value |
| add sp, sp, #NON_EL3_SYS_0_REG_SIZE |
| .endm |
| |
| .macro print_non_el3_sys_1_regs |
| sub sp, sp, #NON_EL3_SYS_1_REG_SIZE |
| |
| mrs x9, tpidr_el0 |
| mrs x10, tpidrro_el0 |
| mrs x11, dacr32_el2 |
| mrs x12, ifsr32_el2 |
| mrs x13, par_el1 |
| mrs x14, far_el1 |
| mrs x15, afsr0_el1 |
| mrs x16, afsr1_el1 |
| mrs x17, contextidr_el1 |
| mrs x8, vbar_el1 |
| |
| stp x9, x10, [sp] |
| stp x11, x12, [sp, #(REG_SIZE * 2)] |
| stp x13, x14, [sp, #(REG_SIZE * 4)] |
| stp x15, x16, [sp, #(REG_SIZE * 6)] |
| stp x17, x8, [sp, #(REG_SIZE * 8)] |
| |
| mrs x10, cntp_ctl_el0 |
| mrs x11, cntp_cval_el0 |
| mrs x12, cntv_ctl_el0 |
| mrs x13, cntv_cval_el0 |
| mrs x14, cntkctl_el1 |
| mrs x15, fpexc32_el2 |
| mrs x8, sp_el0 |
| |
| stp x10, x11, [sp, #(REG_SIZE *10)] |
| stp x12, x13, [sp, #(REG_SIZE * 12)] |
| stp x14, x15, [sp, #(REG_SIZE * 14)] |
| stp x8, xzr, [sp, #(REG_SIZE * 16)] |
| |
| adr x0, non_el3_sys_1_regs |
| mov x1, sp |
| bl print_string_value |
| add sp, sp, #NON_EL3_SYS_1_REG_SIZE |
| .endm |
| |
| .macro init_crash_stack |
| msr cntfrq_el0, x0 /* we can corrupt this reg to free up x0 */ |
| mrs x0, tpidr_el3 |
| |
| /* Check if tpidr is initialized */ |
| cbz x0, infinite_loop |
| |
| ldr x0, [x0, #PTR_CACHE_CRASH_STACK_OFFSET] |
| /* store the x30 and sp to stack */ |
| str x30, [x0, #-(REG_SIZE)]! |
| mov x30, sp |
| str x30, [x0, #-(REG_SIZE)]! |
| mov sp, x0 |
| mrs x0, cntfrq_el0 |
| .endm |
| |
| /* --------------------------------------------------- |
| * The below function initializes the crash dump stack , |
| * and prints the system state. This function |
| * will not return. |
| * --------------------------------------------------- |
| */ |
| func dump_state_and_die |
| init_crash_stack |
| print_caller_saved_regs |
| b print_state |
| |
| func dump_intr_state_and_die |
| init_crash_stack |
| print_caller_saved_regs |
| plat_print_gic_regs /* fall through to print_state */ |
| |
| print_state: |
| /* copy the original x30 from stack */ |
| ldr x30, [sp, #REG_SIZE] |
| print_callee_saved_regs |
| /* copy the original SP_EL3 from stack to x0 and rewind stack */ |
| ldr x0, [sp], #(REG_SIZE * 2) |
| print_el3_sys_regs |
| print_non_el3_sys_0_regs |
| print_non_el3_sys_1_regs |
| b infinite_loop |
| |
| func infinite_loop |
| b infinite_loop |
| |
| |
| #define PCPU_CRASH_STACK_SIZE 0x140 |
| |
| /* ----------------------------------------------------- |
| * void get_crash_stack (uint64_t mpidr) : This |
| * function is used to allocate a small stack for |
| * reporting unhandled exceptions |
| * ----------------------------------------------------- |
| */ |
| func get_crash_stack |
| mov x10, x30 // lr |
| get_mp_stack pcpu_crash_stack, PCPU_CRASH_STACK_SIZE |
| ret x10 |
| |
| /* ----------------------------------------------------- |
| * Per-cpu crash stacks in normal memory. |
| * ----------------------------------------------------- |
| */ |
| declare_stack pcpu_crash_stack, tzfw_normal_stacks, \ |
| PCPU_CRASH_STACK_SIZE, PLATFORM_CORE_COUNT |