2 * SMP support for R-Mobile / SH-Mobile
4 * Copyright (C) 2010 Magnus Damm
5 * Copyright (C) 2010 Takashi Yoshii
7 * Based on vexpress, Copyright (c) 2003 ARM Limited, All Rights Reserved
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 #include <linux/init.h>
14 #include <linux/linkage.h>
15 #include <linux/threads.h>
16 #include <asm/memory.h>
19 ENTRY(shmobile_invalidate_start)
22 ENDPROC(shmobile_invalidate_start)
26 * Reset vector for secondary CPUs.
27 * This will be mapped at address 0 by SBAR register.
28 * We need _long_ jump to the physical address.
32 ENTRY(shmobile_boot_vector)
37 ENDPROC(shmobile_boot_vector)
40 .globl shmobile_boot_fn
43 .globl shmobile_boot_arg
46 .globl shmobile_boot_size
48 .long . - shmobile_boot_vector
51 * Per-CPU SMP boot function/argument selection code based on MPIDR
54 ENTRY(shmobile_smp_boot)
55 @ r0 = MPIDR_HWID_BITMASK
56 mrc p15, 0, r1, c0, c0, 5 @ r1 = MPIDR
57 and r0, r1, r0 @ r0 = cpu_logical_map() value
58 mov r1, #0 @ r1 = CPU index
59 adr r5, 1f @ array of per-cpu mpidr values
60 adr r6, 2f @ array of per-cpu functions
61 adr r7, 3f @ array of per-cpu arguments
63 shmobile_smp_boot_find_mpidr:
64 ldr r8, [r5, r1, lsl #2]
66 bne shmobile_smp_boot_next
68 ldr r9, [r6, r1, lsl #2]
70 bne shmobile_smp_boot_found
72 shmobile_smp_boot_next:
75 blo shmobile_smp_boot_find_mpidr
79 shmobile_smp_boot_found:
80 ldr r0, [r7, r1, lsl #2]
82 ENDPROC(shmobile_smp_boot)
84 ENTRY(shmobile_smp_sleep)
87 ENDPROC(shmobile_smp_sleep)
89 .globl shmobile_smp_mpidr
92 .globl shmobile_smp_fn
95 .globl shmobile_smp_arg