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| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2014-04-14 15:53:58 +0200 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2014-05-08 18:07:37 +0200 |
| commit | 05ad690608098b469d6052c700d96c35e697a955 (patch) | |
| tree | bf9cccb0090608a1f75cff887183983c65cb5735 /arch | |
| parent | Merge branch 'mvebu/soc-pmsu' into mvebu/soc (diff) | |
| download | linux-05ad690608098b469d6052c700d96c35e697a955.tar.xz linux-05ad690608098b469d6052c700d96c35e697a955.zip | |
ARM: mvebu: move Armada XP specific SMP initialization to platsmp.c
The pmsu.c driver contained an armada_xp_boot_cpu() function that sets
the boot address of a secondary CPUs and deasserts the reset. However,
the Armada 375 needs a slightly different logic, so it makes more
sense to move this code into the Armada XP specific platsmp.c.
In order to achieve this, the mvebu_pmsu_set_cpu_boot_addr() function
is exported. It will be needed for both the Armada XP and Armada 38x
SMP implementations.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397483648-26611-2-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mvebu/common.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/platsmp.c | 10 | ||||
| -rw-r--r-- | arch/arm/mach-mvebu/pmsu.c | 26 |
3 files changed, 11 insertions, 26 deletions
diff --git a/arch/arm/mach-mvebu/common.h b/arch/arm/mach-mvebu/common.h index cfb129b144c0..2b88eb00de89 100644 --- a/arch/arm/mach-mvebu/common.h +++ b/arch/arm/mach-mvebu/common.h @@ -19,6 +19,7 @@ void mvebu_restart(enum reboot_mode mode, const char *cmd); int mvebu_cpu_reset_deassert(int cpu); +void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr); void armada_xp_cpu_die(unsigned int cpu); diff --git a/arch/arm/mach-mvebu/platsmp.c b/arch/arm/mach-mvebu/platsmp.c index a6da03f5b24e..e98075f7175a 100644 --- a/arch/arm/mach-mvebu/platsmp.c +++ b/arch/arm/mach-mvebu/platsmp.c @@ -77,9 +77,17 @@ static void armada_xp_secondary_init(unsigned int cpu) static int armada_xp_boot_secondary(unsigned int cpu, struct task_struct *idle) { + int ret, hw_cpu; + pr_info("Booting CPU %d\n", cpu); - armada_xp_boot_cpu(cpu, armada_xp_secondary_startup); + hw_cpu = cpu_logical_map(cpu); + mvebu_pmsu_set_cpu_boot_addr(hw_cpu, armada_xp_secondary_startup); + ret = mvebu_cpu_reset_deassert(hw_cpu); + if (ret) { + pr_warn("unable to boot CPU: %d\n", ret); + return ret; + } return 0; } diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c index 8361281f9180..a1508deecd26 100644 --- a/arch/arm/mach-mvebu/pmsu.c +++ b/arch/arm/mach-mvebu/pmsu.c @@ -41,36 +41,12 @@ static struct of_device_id of_pmsu_table[] = { { /* end of list */ }, }; -static void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr) +void mvebu_pmsu_set_cpu_boot_addr(int hw_cpu, void *boot_addr) { writel(virt_to_phys(boot_addr), pmsu_mp_base + PMSU_BOOT_ADDR_REDIRECT_OFFSET(hw_cpu)); } -#ifdef CONFIG_SMP -int armada_xp_boot_cpu(unsigned int cpu_id, void *boot_addr) -{ - int hw_cpu, ret; - - if (!pmsu_mp_base) { - pr_warn("Can't boot CPU. PMSU is uninitialized\n"); - return -ENODEV; - } - - hw_cpu = cpu_logical_map(cpu_id); - - mvebu_pmsu_set_cpu_boot_addr(hw_cpu, boot_addr); - - ret = mvebu_cpu_reset_deassert(hw_cpu); - if (ret) { - pr_warn("unable to boot CPU: %d\n", ret); - return ret; - } - - return 0; -} -#endif - static int __init armada_370_xp_pmsu_init(void) { struct device_node *np; |