[PATCH 1/9] ARM: EXYNOS: remove secondary startup initialization from smp_prepare_cpus

Bartlomiej Zolnierkiewicz
2018-11-15T15:12:20Z

From: Pankaj Dubey <pankaj.dubey@samsung.com>

We are taking care of setting secondary cpu boot address in
exynos_boot_secondary just before sending ipi to secondary CPUs,
so we can safely remove this setting from smp_prepare_cpus.

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
arch/arm/mach-exynos/platsmp.c | 26 --------------------------
1 file changed, 26 deletions(-)

diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 6a1e682..c39ffd2 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -397,38 +397,12 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)

static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
{
- int i;
-
exynos_sysram_init();

exynos_set_delayed_reset_assertion(true);

if (read_cpuid_part() == ARM_CPU_PART_CORTEX_A9)
exynos_scu_enable();
-
- /*
- * Write the address of secondary startup into the
- * system-wide flags register. The boot monitor waits
- * until it receives a soft interrupt, and then the
- * secondary CPU branches to this address.
- *
- * Try using firmware operation first and fall back to
- * boot register if it fails.
- */
- for (i = 1; i < max_cpus; ++i) {
- unsigned long boot_addr;
- u32 mpidr;
- u32 core_id;
- int ret;
-
- mpidr = cpu_logical_map(i);
- core_id = MPIDR_AFFINITY_LEVEL(mpidr, 0);
- boot_addr = __pa_symbol(exynos4_secondary_startup);
-
- ret = exynos_set_boot_addr(core_id, boot_addr);
- if (ret)
- break;
- }
}

#ifdef CONFIG_HOTPLUG_CPU
--
1.9.1