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| author | Jan Kiszka <jan.kiszka@siemens.com> | 2015-04-21 07:18:28 +0200 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2015-05-13 09:24:13 -0700 |
| commit | 4ce4de1e6618340177eeb0914fc86054c6cc6dca (patch) | |
| tree | f2eb2fe3e9a4320236a21a6a361d27d80726f3ec | |
| parent | b0206e7d26ebb695421c7c093b13475bed92c54d (diff) | |
| download | blackbird-obmc-uboot-4ce4de1e6618340177eeb0914fc86054c6cc6dca.tar.gz blackbird-obmc-uboot-4ce4de1e6618340177eeb0914fc86054c6cc6dca.zip | |
ARM: Factor out reusable psci_cpu_entry
_sunxi_cpu_entry can be converted completely into a reusable
psci_cpu_entry. Tegra124 will use it as well.
As with psci_disable_smp, also the enabling is designed to be overloaded
in cased SMP is not controlled via ACTLR.
CC: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Tom Warren <twarren@nvidia.com>
| -rw-r--r-- | arch/arm/cpu/armv7/psci.S | 23 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/psci.S | 20 |
2 files changed, 25 insertions, 18 deletions
diff --git a/arch/arm/cpu/armv7/psci.S b/arch/arm/cpu/armv7/psci.S index cdcdccdc47..7d89b43983 100644 --- a/arch/arm/cpu/armv7/psci.S +++ b/arch/arm/cpu/armv7/psci.S @@ -165,6 +165,15 @@ ENTRY(psci_disable_smp) ENDPROC(psci_disable_smp) .weak psci_disable_smp +ENTRY(psci_enable_smp) + mrc p15, 0, r0, c1, c0, 1 @ ACTLR + orr r0, r0, #(1 << 6) @ Set SMP bit + mcr p15, 0, r0, c1, c0, 1 @ ACTLR + isb + bx lr +ENDPROC(psci_enable_smp) +.weak psci_enable_smp + ENTRY(psci_cpu_off_common) push {lr} @@ -184,4 +193,18 @@ ENTRY(psci_cpu_off_common) bx lr ENDPROC(psci_cpu_off_common) +ENTRY(psci_cpu_entry) + bl psci_enable_smp + + bl _nonsec_init + + adr r0, _psci_target_pc + ldr r0, [r0] + b _do_nonsec_entry +ENDPROC(psci_cpu_entry) + +.globl _psci_target_pc +_psci_target_pc: + .word 0 + .popsection diff --git a/arch/arm/cpu/armv7/sunxi/psci.S b/arch/arm/cpu/armv7/sunxi/psci.S index 05d047b2a5..90dcff172c 100644 --- a/arch/arm/cpu/armv7/sunxi/psci.S +++ b/arch/arm/cpu/armv7/sunxi/psci.S @@ -139,7 +139,7 @@ out: mcr p15, 0, r7, c1, c1, 0 @ r2 = target PC .globl psci_cpu_on psci_cpu_on: - adr r0, _target_pc + ldr r0, =_psci_target_pc str r2, [r0] dsb @@ -151,7 +151,7 @@ psci_cpu_on: mov r4, #1 lsl r4, r4, r1 - adr r6, _sunxi_cpu_entry + ldr r6, =psci_cpu_entry str r6, [r0, #0x1a4] @ PRIVATE_REG (boot vector) @ Assert reset on target CPU @@ -197,22 +197,6 @@ psci_cpu_on: mov r0, #ARM_PSCI_RET_SUCCESS @ Return PSCI_RET_SUCCESS mov pc, lr -_target_pc: - .word 0 - -_sunxi_cpu_entry: - @ Set SMP bit - mrc p15, 0, r0, c1, c0, 1 - orr r0, r0, #0x40 - mcr p15, 0, r0, c1, c0, 1 - isb - - bl _nonsec_init - - adr r0, _target_pc - ldr r0, [r0] - b _do_nonsec_entry - .globl psci_cpu_off psci_cpu_off: bl psci_cpu_off_common |
