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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 19:11:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-01 19:11:38 -0700
commit9cd11c0c47b8690b47e7573311ce5c483cb344ed (patch)
tree59f51c2bb3f73b21005105095d7321d35616ca9d /arch/arm/mach-spear13xx
parentb9541d94bcd2f23a069dbe84830fef1bbcd643f0 (diff)
parent1ec9c26ad0890003f2b8a4ab97164f66d5de3f6d (diff)
Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM soc multiplatform enablement from Olof Johansson: "This is a pretty significant branch. It's the introduction of the first multiplatform support on ARM, and with this (and the later branch) merged, it is now possible to build one kernel that contains support for highbank, vexpress, mvebu, socfpga, and picoxcell. More platforms will be convered over in the next few releases. Two critical last things had to be done for this to be practical and possible: * Today each platform has its own include directory under mach-<mach>/include/mach/*, and traditionally that is where a lot of driver/platform shared definitions have gone, such as platform data structures. They now need to move out to a common location instead, and this branch moves a large number of those out to include/linux/platform_data. * Each platform used to list the device trees to compile for its boards in mach-<mach>/Makefile.boot. Both of the above changes will mean that there are some merge conflicts to come (and some to resolve here). It's a one-time move and once it settles in, we should be good for quite a while. Sorry for the overhead." Fix conflicts as per Olof. * tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits) ARM: add v7 multi-platform defconfig ARM: msm: Move core.h contents into common.h ARM: highbank: call highbank_pm_init from .init_machine ARM: dtb: move all dtb targets to common Makefile ARM: spear: move platform_data definitions ARM: samsung: move platform_data definitions ARM: orion: move platform_data definitions ARM: vexpress: convert to multi-platform ARM: initial multiplatform support ARM: mvebu: move armada-370-xp.h in mach dir ARM: vexpress: remove dependency on mach/* headers ARM: picoxcell: remove dependency on mach/* headers ARM: move all dtb targets out of Makefile.boot ARM: picoxcell: move debug macros to include/debug ARM: socfpga: move debug macros to include/debug ARM: mvebu: move debug macros to include/debug ARM: vexpress: move debug macros to include/debug ARM: highbank: move debug macros to include/debug ARM: move debug macros to common location ARM: make mach/gpio.h headers optional ...
Diffstat (limited to 'arch/arm/mach-spear13xx')
-rw-r--r--arch/arm/mach-spear13xx/Makefile.boot3
-rw-r--r--arch/arm/mach-spear13xx/hotplug.c22
-rw-r--r--arch/arm/mach-spear13xx/include/mach/generic.h3
-rw-r--r--arch/arm/mach-spear13xx/include/mach/gpio.h19
-rw-r--r--arch/arm/mach-spear13xx/platsmp.c25
-rw-r--r--arch/arm/mach-spear13xx/spear1310.c1
-rw-r--r--arch/arm/mach-spear13xx/spear1340.c1
7 files changed, 23 insertions, 51 deletions
diff --git a/arch/arm/mach-spear13xx/Makefile.boot b/arch/arm/mach-spear13xx/Makefile.boot
index 403efd7e6d2..4674a4c221d 100644
--- a/arch/arm/mach-spear13xx/Makefile.boot
+++ b/arch/arm/mach-spear13xx/Makefile.boot
@@ -1,6 +1,3 @@
zreladdr-y += 0x00008000
params_phys-y := 0x00000100
initrd_phys-y := 0x00800000
-
-dtb-$(CONFIG_MACH_SPEAR1310) += spear1310-evb.dtb
-dtb-$(CONFIG_MACH_SPEAR1340) += spear1340-evb.dtb
diff --git a/arch/arm/mach-spear13xx/hotplug.c b/arch/arm/mach-spear13xx/hotplug.c
index 5c6867b46d0..a7d2dd11a4f 100644
--- a/arch/arm/mach-spear13xx/hotplug.c
+++ b/arch/arm/mach-spear13xx/hotplug.c
@@ -17,8 +17,6 @@
#include <asm/cp15.h>
#include <asm/smp_plat.h>
-extern volatile int pen_release;
-
static inline void cpu_enter_lowpower(void)
{
unsigned int v;
@@ -56,7 +54,7 @@ static inline void cpu_leave_lowpower(void)
: "cc");
}
-static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
+static inline void spear13xx_do_lowpower(unsigned int cpu, int *spurious)
{
for (;;) {
wfi();
@@ -79,17 +77,12 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
}
}
-int platform_cpu_kill(unsigned int cpu)
-{
- return 1;
-}
-
/*
* platform-specific code to shutdown a CPU
*
* Called with IRQs disabled
*/
-void __cpuinit platform_cpu_die(unsigned int cpu)
+void __ref spear13xx_cpu_die(unsigned int cpu)
{
int spurious = 0;
@@ -97,7 +90,7 @@ void __cpuinit platform_cpu_die(unsigned int cpu)
* we're ready for shutdown now, so do it
*/
cpu_enter_lowpower();
- platform_do_lowpower(cpu, &spurious);
+ spear13xx_do_lowpower(cpu, &spurious);
/*
* bring this CPU back into the world of cache
@@ -108,12 +101,3 @@ void __cpuinit platform_cpu_die(unsigned int cpu)
if (spurious)
pr_warn("CPU%u: %u spurious wakeup calls\n", cpu, spurious);
}
-
-int platform_cpu_disable(unsigned int cpu)
-{
- /*
- * we don't allow CPU 0 to be shutdown (it is still too special
- * e.g. clock tick interrupts)
- */
- return cpu == 0 ? -EPERM : 0;
-}
diff --git a/arch/arm/mach-spear13xx/include/mach/generic.h b/arch/arm/mach-spear13xx/include/mach/generic.h
index dac57fd0cdf..c33f4d9361b 100644
--- a/arch/arm/mach-spear13xx/include/mach/generic.h
+++ b/arch/arm/mach-spear13xx/include/mach/generic.h
@@ -33,6 +33,9 @@ void __init spear13xx_l2x0_init(void);
bool dw_dma_filter(struct dma_chan *chan, void *slave);
void spear_restart(char, const char *);
void spear13xx_secondary_startup(void);
+void __cpuinit spear13xx_cpu_die(unsigned int cpu);
+
+extern struct smp_operations spear13xx_smp_ops;
#ifdef CONFIG_MACH_SPEAR1310
void __init spear1310_clk_init(void);
diff --git a/arch/arm/mach-spear13xx/include/mach/gpio.h b/arch/arm/mach-spear13xx/include/mach/gpio.h
deleted file mode 100644
index 85f176311f6..00000000000
--- a/arch/arm/mach-spear13xx/include/mach/gpio.h
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * arch/arm/mach-spear13xx/include/mach/gpio.h
- *
- * GPIO macros for SPEAr13xx machine family
- *
- * Copyright (C) 2012 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __MACH_GPIO_H
-#define __MACH_GPIO_H
-
-#include <plat/gpio.h>
-
-#endif /* __MACH_GPIO_H */
diff --git a/arch/arm/mach-spear13xx/platsmp.c b/arch/arm/mach-spear13xx/platsmp.c
index f5d07f2663d..2eaa3fa7b43 100644
--- a/arch/arm/mach-spear13xx/platsmp.c
+++ b/arch/arm/mach-spear13xx/platsmp.c
@@ -19,18 +19,13 @@
#include <asm/hardware/gic.h>
#include <asm/smp_scu.h>
#include <mach/spear.h>
+#include <mach/generic.h>
-/*
- * control for which core is the next to come out of the secondary
- * boot "holding pen"
- */
-volatile int __cpuinitdata pen_release = -1;
static DEFINE_SPINLOCK(boot_lock);
static void __iomem *scu_base = IOMEM(VA_SCU_BASE);
-extern void spear13xx_secondary_startup(void);
-void __cpuinit platform_secondary_init(unsigned int cpu)
+static void __cpuinit spear13xx_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
@@ -53,7 +48,7 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
spin_unlock(&boot_lock);
}
-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+static int __cpuinit spear13xx_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
unsigned long timeout;
@@ -97,7 +92,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
* Initialise the CPU possible map early - this describes the CPUs
* which may be present or become present in the system.
*/
-void __init smp_init_cpus(void)
+static void __init spear13xx_smp_init_cpus(void)
{
unsigned int i, ncores = scu_get_core_count(scu_base);
@@ -113,7 +108,7 @@ void __init smp_init_cpus(void)
set_smp_cross_call(gic_raise_softirq);
}
-void __init platform_smp_prepare_cpus(unsigned int max_cpus)
+static void __init spear13xx_smp_prepare_cpus(unsigned int max_cpus)
{
scu_enable(scu_base);
@@ -125,3 +120,13 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
*/
__raw_writel(virt_to_phys(spear13xx_secondary_startup), SYS_LOCATION);
}
+
+struct smp_operations spear13xx_smp_ops __initdata = {
+ .smp_init_cpus = spear13xx_smp_init_cpus,
+ .smp_prepare_cpus = spear13xx_smp_prepare_cpus,
+ .smp_secondary_init = spear13xx_secondary_init,
+ .smp_boot_secondary = spear13xx_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_die = spear13xx_cpu_die,
+#endif
+};
diff --git a/arch/arm/mach-spear13xx/spear1310.c b/arch/arm/mach-spear13xx/spear1310.c
index 732d29bc733..9fbbfc5650a 100644
--- a/arch/arm/mach-spear13xx/spear1310.c
+++ b/arch/arm/mach-spear13xx/spear1310.c
@@ -78,6 +78,7 @@ static void __init spear1310_map_io(void)
}
DT_MACHINE_START(SPEAR1310_DT, "ST SPEAr1310 SoC with Flattened Device Tree")
+ .smp = smp_ops(spear13xx_smp_ops),
.map_io = spear1310_map_io,
.init_irq = spear13xx_dt_init_irq,
.handle_irq = gic_handle_irq,
diff --git a/arch/arm/mach-spear13xx/spear1340.c b/arch/arm/mach-spear13xx/spear1340.c
index 81e4ed76ad0..081014fb314 100644
--- a/arch/arm/mach-spear13xx/spear1340.c
+++ b/arch/arm/mach-spear13xx/spear1340.c
@@ -182,6 +182,7 @@ static const char * const spear1340_dt_board_compat[] = {
};
DT_MACHINE_START(SPEAR1340_DT, "ST SPEAr1340 SoC with Flattened Device Tree")
+ .smp = smp_ops(spear13xx_smp_ops),
.map_io = spear13xx_map_io,
.init_irq = spear13xx_dt_init_irq,
.handle_irq = gic_handle_irq,