| Dan Handley | 9df4804 | 2015-03-19 18:58:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | #include <asm_macros.S> |
| 31 | #include <platform_def.h> |
| 32 | |
| Soby Mathew | fec4eb7 | 2015-07-01 16:16:20 +0100 | [diff] [blame] | 33 | .weak plat_arm_calc_core_pos |
| 34 | .weak plat_my_core_pos |
| Dan Handley | 9df4804 | 2015-03-19 18:58:55 +0000 | [diff] [blame] | 35 | .globl plat_crash_console_init |
| 36 | .globl plat_crash_console_putc |
| Sandrine Bailleux | aa94ffa | 2015-07-10 17:33:26 +0100 | [diff] [blame] | 37 | .globl platform_mem_init |
| Dan Handley | 9df4804 | 2015-03-19 18:58:55 +0000 | [diff] [blame] | 38 | |
| Soby Mathew | fec4eb7 | 2015-07-01 16:16:20 +0100 | [diff] [blame] | 39 | |
| 40 | /* ----------------------------------------------------- |
| 41 | * unsigned int plat_my_core_pos(void) |
| 42 | * This function uses the plat_arm_calc_core_pos() |
| 43 | * definition to get the index of the calling CPU. |
| 44 | * ----------------------------------------------------- |
| 45 | */ |
| 46 | func plat_my_core_pos |
| 47 | mrs x0, mpidr_el1 |
| 48 | b plat_arm_calc_core_pos |
| 49 | endfunc plat_my_core_pos |
| 50 | |
| 51 | /* ----------------------------------------------------- |
| 52 | * unsigned int plat_arm_calc_core_pos(uint64_t mpidr) |
| 53 | * Helper function to calculate the core position. |
| 54 | * With this function: CorePos = (ClusterId * 4) + |
| 55 | * CoreId |
| 56 | * ----------------------------------------------------- |
| 57 | */ |
| 58 | func plat_arm_calc_core_pos |
| 59 | and x1, x0, #MPIDR_CPU_MASK |
| 60 | and x0, x0, #MPIDR_CLUSTER_MASK |
| 61 | add x0, x1, x0, LSR #6 |
| 62 | ret |
| 63 | endfunc plat_arm_calc_core_pos |
| Dan Handley | 9df4804 | 2015-03-19 18:58:55 +0000 | [diff] [blame] | 64 | |
| 65 | /* --------------------------------------------- |
| 66 | * int plat_crash_console_init(void) |
| 67 | * Function to initialize the crash console |
| 68 | * without a C Runtime to print crash report. |
| 69 | * Clobber list : x0, x1, x2 |
| 70 | * --------------------------------------------- |
| 71 | */ |
| 72 | func plat_crash_console_init |
| 73 | mov_imm x0, PLAT_ARM_CRASH_UART_BASE |
| 74 | mov_imm x1, PLAT_ARM_CRASH_UART_CLK_IN_HZ |
| 75 | mov_imm x2, ARM_CONSOLE_BAUDRATE |
| 76 | b console_core_init |
| 77 | endfunc plat_crash_console_init |
| 78 | |
| 79 | /* --------------------------------------------- |
| 80 | * int plat_crash_console_putc(int c) |
| 81 | * Function to print a character on the crash |
| 82 | * console without a C Runtime. |
| 83 | * Clobber list : x1, x2 |
| 84 | * --------------------------------------------- |
| 85 | */ |
| 86 | func plat_crash_console_putc |
| 87 | mov_imm x1, PLAT_ARM_CRASH_UART_BASE |
| 88 | b console_core_putc |
| 89 | endfunc plat_crash_console_putc |
| Sandrine Bailleux | aa94ffa | 2015-07-10 17:33:26 +0100 | [diff] [blame] | 90 | |
| 91 | /* --------------------------------------------------------------------- |
| 92 | * We don't need to carry out any memory initialization on ARM |
| 93 | * platforms. The Secure RAM is accessible straight away. |
| 94 | * --------------------------------------------------------------------- |
| 95 | */ |
| 96 | func platform_mem_init |
| 97 | ret |
| 98 | endfunc platform_mem_init |