| /* |
| * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <platform_def.h> |
| |
| .globl plat_secondary_cold_boot_setup |
| .globl plat_report_exception |
| .globl platform_is_primary_cpu |
| .globl plat_crash_console_init |
| .globl plat_crash_console_putc |
| .globl platform_mem_init |
| |
| |
| .macro crash_ram_log |
| /* |
| * Check teearg->atf_log_buf_size. |
| * Exit if atf_log_buf_size equals 0 |
| */ |
| adr x2, ptr_atf_crash_flag |
| ldr x2, [x2] |
| /* exit if ptr_atf_crash_flag equals NULL */ |
| cbz x2, exit_putc |
| |
| /* |
| * set atf crash magic number |
| */ |
| 1: |
| adr x2, ptr_atf_crash_flag |
| ldr x2, [x2] |
| mov_imm x1, 0xdead1abf |
| /* p_atf_log_ctrl->atf_crash_flag = 0xdead1abf */ |
| str w1, [x2] |
| /* can't use w3 return addr, w4, start of buffer addr */ |
| ldr w2, [x2] |
| cmp w2, w1 |
| b.ne 1b |
| |
| /* |
| * get cpu id |
| */ |
| mrs x1, mpidr_el1 |
| /* refer to platform_get_core_pos */ |
| and x2, x1, #MPIDR_CPU_MASK |
| and x1, x1, #MPIDR_CLUSTER_MASK |
| /* x1 = cpu id (cpu id = aff0 + aff1*4 ) */ |
| add x1, x2, x1, LSR #6 |
| |
| adr x2, ptr_atf_except_write_pos_per_cpu |
| ldr x2, [x2] |
| /* |
| * plus (cpu_id * 8)--> |
| * &p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id] |
| * x2 = &p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id]; |
| */ |
| add x2, x2, x1, LSL # 3 |
| /* log write */ |
| /* w1 = p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id] */ |
| ldr x1, [x2] |
| /* *x1 = w0--> |
| * *(p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id]) = c) |
| */ |
| strb w0, [x1] |
| /* w1++ */ |
| add x1, x1, #1 |
| /* p_atf_log_ctrl->atf_except_write_pos_per_cpu[cpu_id] = w1 */ |
| str x1, [x2] |
| exit_putc: |
| .endm |
| |
| /* ----------------------------------------------------- |
| * void plat_secondary_cold_boot_setup (void); |
| * |
| * This function performs any platform specific actions |
| * needed for a secondary cpu after a cold reset e.g |
| * mark the cpu's presence, mechanism to place it in a |
| * holding pen etc. |
| * ----------------------------------------------------- |
| */ |
| func plat_secondary_cold_boot_setup |
| /* Do not do cold boot for secondary CPU */ |
| cb_panic: |
| b cb_panic |
| endfunc plat_secondary_cold_boot_setup |
| |
| func platform_is_primary_cpu |
| and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) |
| cmp x0, #PLAT_PRIMARY_CPU |
| cset x0, eq |
| ret |
| endfunc platform_is_primary_cpu |
| |
| /* --------------------------------------------- |
| * int plat_crash_console_init(void) |
| * Function to initialize the crash console |
| * without a C Runtime to print crash report. |
| * Clobber list : x0, x1, x2 |
| * --------------------------------------------- |
| */ |
| func plat_crash_console_init |
| mov_imm x0, UART0_BASE |
| mov_imm x1, UART_CLOCK |
| mov_imm x2, UART_BAUDRATE |
| b console_init |
| ret |
| endfunc plat_crash_console_init |
| |
| /* --------------------------------------------- |
| * int plat_crash_console_putc(void) |
| * Function to print a character on the crash |
| * console without a C Runtime. |
| * Clobber list : x1, x2 |
| * --------------------------------------------- |
| */ |
| func plat_crash_console_putc |
| mov_imm x1, UART0_BASE |
| b console_core_putc |
| ret |
| endfunc plat_crash_console_putc |
| |
| /* -------------------------------------------------------- |
| * void platform_mem_init (void); |
| * |
| * Any memory init, relocation to be done before the |
| * platform boots. Called very early in the boot process. |
| * -------------------------------------------------------- |
| */ |
| func platform_mem_init |
| ret |
| endfunc platform_mem_init |
| |
