| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2014 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| #include <arch/asm.h> |
| |
| /* |
| * Call entry(arg) after reinitializing stack state. |
| * void secmon_trampoline(void *entry, void *arg); |
| */ |
| ENTRY(secmon_trampoline) |
| mov x22, x0 /* x22 = function pointer */ |
| mov x23, x1 /* x23 = argument */ |
| bl smp_processor_id /* x0 = cpu */ |
| mov x24, x0 |
| |
| /* Set the exception stack for this cpu. */ |
| bl cpu_get_exception_stack |
| msr SPSel, #1 |
| isb |
| mov sp, x0 |
| |
| /* Have stack pointer use SP_EL0. */ |
| msr SPSel, #0 |
| isb |
| |
| /* Set stack for this cpu. */ |
| mov x0, x24 /* x0 = cpu */ |
| bl cpu_get_stack |
| mov sp, x0 |
| |
| /* Call the function with specified argument. */ |
| mov x1, x22 |
| mov x0, x23 |
| br x1 |
| ENDPROC(secmon_trampoline) |