projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 4898de3d BS |
1 | /* |
| 2 | * Entry of the second core for CSR Marco dual-core SMP SoCs | |
| 3 | * | |
| 4 | * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company. | |
| 5 | * | |
| 6 | * Licensed under GPLv2 or later. | |
| 7 | */ | |
| 8 | ||
| 9 | #include <linux/linkage.h> | |
| 10 | #include <linux/init.h> | |
| 11 | ||
| 4898de3d BS |
12 | /* |
| 13 | * SIRFSOC specific entry point for secondary CPUs. This provides | |
| 14 | * a "holding pen" into which all secondary cores are held until we're | |
| 15 | * ready for them to initialise. | |
| 16 | */ | |
| 17 | ENTRY(sirfsoc_secondary_startup) | |
| 18 | bl v7_invalidate_l1 | |
| 19 | mrc p15, 0, r0, c0, c0, 5 | |
| 20 | and r0, r0, #15 | |
| 21 | adr r4, 1f | |
| 22 | ldmia r4, {r5, r6} | |
| 23 | sub r4, r4, r5 | |
| 24 | add r6, r6, r4 | |
| 25 | pen: ldr r7, [r6] | |
| 26 | cmp r7, r0 | |
| 27 | bne pen | |
| 28 | ||
| 29 | /* | |
| 30 | * we've been released from the holding pen: secondary_stack | |
| 31 | * should now contain the SVC stack for this core | |
| 32 | */ | |
| 33 | b secondary_startup | |
| 34 | ENDPROC(sirfsoc_secondary_startup) | |
| 35 | ||
| 36 | .align | |
| 37 | 1: .long . | |
| 38 | .long pen_release |