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Diffstat (limited to 'arch/arm/mach-versatile/headsmp.S')
| -rw-r--r-- | arch/arm/mach-versatile/headsmp.S | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/mach-versatile/headsmp.S b/arch/arm/mach-versatile/headsmp.S new file mode 100644 index 000000000000..99c32db412ae --- /dev/null +++ b/arch/arm/mach-versatile/headsmp.S @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2003 ARM Limited + * All Rights Reserved + */ +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/assembler.h> + +/* + * Realview/Versatile Express 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(versatile_secondary_startup) + ARM_BE8(setend be) + mrc p15, 0, r0, c0, c0, 5 + bic r0, #0xff000000 + 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 + + .align +1: .long . + .long versatile_cpu_release +ENDPROC(versatile_secondary_startup) |