| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * Entry of the second core for CSR Marco dual-core SMP SoCs |
| * |
| * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company. |
| */ |
| |
| #include <linux/linkage.h> |
| #include <linux/init.h> |
| |
| /* |
| * SIRFSOC specific entry point for secondary CPUs. This provides |
| * a "holding pen" into which all secondary cores are held until we're |
| * ready for them to initialise. |
| */ |
| ENTRY(sirfsoc_secondary_startup) |
| mrc p15, 0, r0, c0, c0, 5 |
| and r0, r0, #15 |
| adr r4, 1f |
| ldmia r4, {r5, r6} |
| sub r4, r4, r5 |
| add r6, r6, r4 |
| pen: ldr r7, [r6] |
| cmp r7, r0 |
| bne pen |
| |
| /* |
| * we've been released from the holding pen: secondary_stack |
| * should now contain the SVC stack for this core |
| */ |
| b secondary_startup |
| ENDPROC(sirfsoc_secondary_startup) |
| |
| .align |
| 1: .long . |
| .long prima2_pen_release |
