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arm64: use PC-relative reference for secondary_holding_pen_release 

Replace the confusing virtual/physical address arithmetic with a simple
PC-relative reference.

Tested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Ard Biesheuvel 2015-03-10 15:00:03 +01:00 committed by Will Deacon
parent a871d354f7
commit b1c98297fe
1 changed files with 1 additions and 8 deletions
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9
arch/arm64/kernel/head.S
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@ -564,10 +564,6 @@ ENTRY(__boot_cpu_mode)
.popsection
#ifdef CONFIG_SMP
.align 3
1: .quad .
.quad secondary_holding_pen_release
/*
* This provides a "holding pen" for platforms to hold all secondary
* cores are held until we're ready for them to initialise.
@ -579,10 +575,7 @@ ENTRY(secondary_holding_pen)
mrs x0, mpidr_el1
ldr x1, =MPIDR_HWID_BITMASK
and x0, x0, x1
adr x1, 1b
ldp x2, x3, [x1]
sub x1, x1, x2
add x3, x3, x1
adr_l x3, secondary_holding_pen_release
pen: ldr x4, [x3]
cmp x4, x0
b.eq secondary_startup