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author | Herbert Xu <herbert@gondor.apana.org.au> | 2015-06-19 22:07:07 +0800 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-06-19 22:07:07 +0800 |
commit | c0b59fafe31bf91f589736be304d739b13952fdd (patch) | |
tree | 0088a41c6b68132739294643be06734e3af67677 /arch/arm/mach-alpine/platsmp.c | |
parent | 28bceeaaf81140d69647acd0eb7dc9312f27844a (diff) | |
parent | bfa1ce5f38938cc9e6c7f2d1011f88eba2b9e2b2 (diff) | |
download | op-kernel-dev-c0b59fafe31bf91f589736be304d739b13952fdd.zip op-kernel-dev-c0b59fafe31bf91f589736be304d739b13952fdd.tar.gz |
Merge branch 'mvebu/drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Merge the mvebu/drivers branch of the arm-soc tree which contains
just a single patch bfa1ce5f38938cc9e6c7f2d1011f88eba2b9e2b2 ("bus:
mvebu-mbus: add mv_mbus_dram_info_nooverlap()") that happens to be
a prerequisite of the new marvell/cesa crypto driver.
Diffstat (limited to 'arch/arm/mach-alpine/platsmp.c')
-rw-r--r-- | arch/arm/mach-alpine/platsmp.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/mach-alpine/platsmp.c b/arch/arm/mach-alpine/platsmp.c new file mode 100644 index 0000000..f78429f --- /dev/null +++ b/arch/arm/mach-alpine/platsmp.c @@ -0,0 +1,49 @@ +/* + * SMP operations for Alpine platform. + * + * Copyright (C) 2015 Annapurna Labs Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/io.h> +#include <linux/of.h> + +#include <asm/smp_plat.h> + +#include "alpine_cpu_pm.h" + +static int alpine_boot_secondary(unsigned int cpu, struct task_struct *idle) +{ + phys_addr_t addr; + + addr = virt_to_phys(secondary_startup); + + if (addr > (phys_addr_t)(uint32_t)(-1)) { + pr_err("FAIL: resume address over 32bit (%pa)", &addr); + return -EINVAL; + } + + return alpine_cpu_wakeup(cpu_logical_map(cpu), (uint32_t)addr); +} + +static void __init alpine_smp_prepare_cpus(unsigned int max_cpus) +{ + alpine_cpu_pm_init(); +} + +static struct smp_operations alpine_smp_ops __initdata = { + .smp_prepare_cpus = alpine_smp_prepare_cpus, + .smp_boot_secondary = alpine_boot_secondary, +}; +CPU_METHOD_OF_DECLARE(alpine_smp, "al,alpine-smp", &alpine_smp_ops); |