[PATCH v4 03/10] ARM: SoC: convert VExpress/RealView to SoC descriptor
Marc Zyngier
marc.zyngier at arm.com
Mon Oct 3 13:35:49 EDT 2011
Convert both Realview and VExpress to use the SoC descriptor to
provide their SMP and CPU hotplug operation.
Cc: Arnd Bergmann <arnd at arndb.de>
Cc: Nicolas Pitre <nico at fluxnic.net>
Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
---
arch/arm/mach-realview/core.c | 7 +++++++
arch/arm/mach-realview/core.h | 9 +++++++++
arch/arm/mach-realview/hotplug.c | 6 +++---
arch/arm/mach-realview/platsmp.c | 24 ++++++++++++++++++++----
arch/arm/mach-realview/realview_eb.c | 1 +
arch/arm/mach-realview/realview_pb1176.c | 1 +
arch/arm/mach-realview/realview_pb11mp.c | 1 +
arch/arm/mach-realview/realview_pba8.c | 1 +
arch/arm/mach-realview/realview_pbx.c | 1 +
arch/arm/mach-vexpress/core.h | 10 ++++++++++
arch/arm/mach-vexpress/hotplug.c | 6 +++---
arch/arm/mach-vexpress/platsmp.c | 24 ++++++++++++++++++++----
arch/arm/mach-vexpress/v2m.c | 9 +++++++++
arch/arm/plat-versatile/include/plat/platsmp.h | 14 ++++++++++++++
arch/arm/plat-versatile/platsmp.c | 4 ++--
15 files changed, 102 insertions(+), 16 deletions(-)
create mode 100644 arch/arm/plat-versatile/include/plat/platsmp.h
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index d5ed5d4..e84e6b2 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -33,6 +33,7 @@
#include <linux/clkdev.h>
#include <linux/mtd/physmap.h>
+#include <asm/soc.h>
#include <asm/system.h>
#include <mach/hardware.h>
#include <asm/irq.h>
@@ -533,3 +534,9 @@ void realview_fixup(struct tag *tags, char **from, struct meminfo *meminfo)
meminfo->nr_banks = 1;
#endif
}
+
+struct arm_soc_desc realview_soc_desc __initdata = {
+ .name = "ARM RealView Platform",
+ soc_smp_init_ops(realview_soc_smp_init_ops)
+ soc_smp_ops(realview_soc_smp_ops)
+};
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 47259c8..a262e4e 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -27,6 +27,7 @@
#include <asm/setup.h>
#include <asm/leds.h>
+#include <asm/soc.h>
#define AMBA_DEVICE(name,busid,base,plat) \
static struct amba_device name##_device = { \
@@ -67,4 +68,12 @@ extern void realview_fixup(struct tag *tags, char **from,
struct meminfo *meminfo);
extern void (*realview_reset)(char);
+extern struct arm_soc_desc realview_soc_desc;
+extern struct arm_soc_smp_init_ops realview_soc_smp_init_ops;
+extern struct arm_soc_smp_ops realview_soc_smp_ops;
+
+extern int realview_cpu_kill(unsigned int cpu);
+extern void realview_cpu_die(unsigned int cpu);
+extern int realview_cpu_disable(unsigned int cpu);
+
#endif
diff --git a/arch/arm/mach-realview/hotplug.c b/arch/arm/mach-realview/hotplug.c
index ac1aed2..c8adf5c 100644
--- a/arch/arm/mach-realview/hotplug.c
+++ b/arch/arm/mach-realview/hotplug.c
@@ -87,7 +87,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
}
}
-int platform_cpu_kill(unsigned int cpu)
+int realview_cpu_kill(unsigned int cpu)
{
return 1;
}
@@ -97,7 +97,7 @@ int platform_cpu_kill(unsigned int cpu)
*
* Called with IRQs disabled
*/
-void platform_cpu_die(unsigned int cpu)
+void realview_cpu_die(unsigned int cpu)
{
int spurious = 0;
@@ -117,7 +117,7 @@ void platform_cpu_die(unsigned int cpu)
pr_warn("CPU%u: %u spurious wakeup calls\n", cpu, spurious);
}
-int platform_cpu_disable(unsigned int cpu)
+int realview_cpu_disable(unsigned int cpu)
{
/*
* we don't allow CPU 0 to be shutdown (it is still too special
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index 4ae943b..92be3eb 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -18,14 +18,15 @@
#include <asm/mach-types.h>
#include <asm/smp_scu.h>
#include <asm/unified.h>
+#include <asm/soc.h>
#include <mach/board-eb.h>
#include <mach/board-pb11mp.h>
#include <mach/board-pbx.h>
-#include "core.h"
+#include <plat/platsmp.h>
-extern void versatile_secondary_startup(void);
+#include "core.h"
static void __iomem *scu_base_addr(void)
{
@@ -44,7 +45,7 @@ static void __iomem *scu_base_addr(void)
* 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 realview_smp_init_cpus(void)
{
void __iomem *scu_base = scu_base_addr();
unsigned int i, ncores;
@@ -66,7 +67,7 @@ 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 realview_smp_prepare_cpus(unsigned int max_cpus)
{
scu_enable(scu_base_addr());
@@ -80,3 +81,18 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
__raw_writel(BSYM(virt_to_phys(versatile_secondary_startup)),
__io_address(REALVIEW_SYS_FLAGSSET));
}
+
+struct arm_soc_smp_init_ops realview_soc_smp_init_ops __initdata = {
+ .smp_init_cpus = realview_smp_init_cpus,
+ .smp_prepare_cpus = realview_smp_prepare_cpus,
+};
+
+struct arm_soc_smp_ops realview_soc_smp_ops __initdata = {
+ .smp_secondary_init = versatile_secondary_init,
+ .smp_boot_secondary = versatile_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_kill = realview_cpu_kill,
+ .cpu_die = realview_cpu_die,
+ .cpu_disable = realview_cpu_disable,
+#endif
+};
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index 026c66a..427e44e 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -464,6 +464,7 @@ static void __init realview_eb_init(void)
MACHINE_START(REALVIEW_EB, "ARM-RealView EB")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
+ .soc = &realview_soc_desc,
.fixup = realview_fixup,
.map_io = realview_eb_map_io,
.init_early = realview_init_early,
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index 7ead14f..99ea1c0 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -358,6 +358,7 @@ static void __init realview_pb1176_init(void)
MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
+ .soc = &realview_soc_desc,
.fixup = realview_pb1176_fixup,
.map_io = realview_pb1176_map_io,
.init_early = realview_init_early,
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 671ad6d..6cb8318 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -361,6 +361,7 @@ static void __init realview_pb11mp_init(void)
MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
+ .soc = &realview_soc_desc,
.fixup = realview_fixup,
.map_io = realview_pb11mp_map_io,
.init_early = realview_init_early,
diff --git a/arch/arm/mach-realview/realview_pba8.c b/arch/arm/mach-realview/realview_pba8.c
index cbf22df..3db72c5 100644
--- a/arch/arm/mach-realview/realview_pba8.c
+++ b/arch/arm/mach-realview/realview_pba8.c
@@ -311,6 +311,7 @@ static void __init realview_pba8_init(void)
MACHINE_START(REALVIEW_PBA8, "ARM-RealView PB-A8")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
+ .soc = &realview_soc_desc,
.fixup = realview_fixup,
.map_io = realview_pba8_map_io,
.init_early = realview_init_early,
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index 63c4114..bea4212 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -394,6 +394,7 @@ static void __init realview_pbx_init(void)
MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
+ .soc = &realview_soc_desc,
.fixup = realview_pbx_fixup,
.map_io = realview_pbx_map_io,
.init_early = realview_init_early,
diff --git a/arch/arm/mach-vexpress/core.h b/arch/arm/mach-vexpress/core.h
index f439715..bd9065a 100644
--- a/arch/arm/mach-vexpress/core.h
+++ b/arch/arm/mach-vexpress/core.h
@@ -17,3 +17,13 @@ struct amba_device name##_device = { \
.irq = IRQ_##base, \
/* .dma = DMA_##base,*/ \
}
+
+struct arm_soc_smp_init_ops;
+struct arm_soc_smp_ops;
+
+extern struct arm_soc_smp_init_ops vexpress_soc_smp_init_ops;
+extern struct arm_soc_smp_ops vexpress_soc_smp_ops;
+
+extern int vexpress_cpu_kill(unsigned int cpu);
+extern void vexpress_cpu_die(unsigned int cpu);
+extern int vexpress_cpu_disable(unsigned int cpu);
diff --git a/arch/arm/mach-vexpress/hotplug.c b/arch/arm/mach-vexpress/hotplug.c
index 813ee08..08e5e42 100644
--- a/arch/arm/mach-vexpress/hotplug.c
+++ b/arch/arm/mach-vexpress/hotplug.c
@@ -83,7 +83,7 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
}
}
-int platform_cpu_kill(unsigned int cpu)
+int vexpress_cpu_kill(unsigned int cpu)
{
return 1;
}
@@ -93,7 +93,7 @@ int platform_cpu_kill(unsigned int cpu)
*
* Called with IRQs disabled
*/
-void platform_cpu_die(unsigned int cpu)
+void vexpress_cpu_die(unsigned int cpu)
{
int spurious = 0;
@@ -113,7 +113,7 @@ void platform_cpu_die(unsigned int cpu)
pr_warn("CPU%u: %u spurious wakeup calls\n", cpu, spurious);
}
-int platform_cpu_disable(unsigned int cpu)
+int vexpress_cpu_disable(unsigned int cpu)
{
/*
* we don't allow CPU 0 to be shutdown (it is still too special
diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
index 2b5f7ac..523d226 100644
--- a/arch/arm/mach-vexpress/platsmp.c
+++ b/arch/arm/mach-vexpress/platsmp.c
@@ -13,25 +13,26 @@
#include <linux/smp.h>
#include <linux/io.h>
+#include <asm/soc.h>
#include <asm/unified.h>
#include <mach/motherboard.h>
#define V2M_PA_CS7 0x10000000
-#include "core.h"
+#include <plat/platsmp.h>
-extern void versatile_secondary_startup(void);
+#include "core.h"
/*
* 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 vexpress_smp_init_cpus(void)
{
ct_desc->init_cpu_map();
}
-void __init platform_smp_prepare_cpus(unsigned int max_cpus)
+static void __init vexpress_smp_prepare_cpus(unsigned int max_cpus)
{
/*
* Initialise the present map, which describes the set of CPUs
@@ -49,3 +50,18 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
writel(BSYM(virt_to_phys(versatile_secondary_startup)),
MMIO_P2V(V2M_SYS_FLAGSSET));
}
+
+struct arm_soc_smp_init_ops vexpress_soc_smp_init_ops __initdata = {
+ .smp_init_cpus = vexpress_smp_init_cpus,
+ .smp_prepare_cpus = vexpress_smp_prepare_cpus,
+};
+
+struct arm_soc_smp_ops vexpress_soc_smp_ops __initdata = {
+ .smp_secondary_init = versatile_secondary_init,
+ .smp_boot_secondary = versatile_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_kill = vexpress_cpu_kill,
+ .cpu_die = vexpress_cpu_die,
+ .cpu_disable = vexpress_cpu_disable,
+#endif
+};
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 1fafc32..47bca2a 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -16,6 +16,7 @@
#include <linux/mtd/physmap.h>
#include <asm/mach-types.h>
+#include <asm/soc.h>
#include <asm/sizes.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -28,6 +29,7 @@
#include <mach/motherboard.h>
#include <plat/sched_clock.h>
+#include <plat/platsmp.h>
#include "core.h"
@@ -442,8 +444,15 @@ static void __init v2m_init(void)
ct_desc->init_tile();
}
+static struct arm_soc_desc vexpress_soc_desc __initdata = {
+ .name = "ARM VE Platform",
+ soc_smp_init_ops(vexpress_soc_smp_init_ops)
+ soc_smp_ops(vexpress_soc_smp_ops)
+};
+
MACHINE_START(VEXPRESS, "ARM-Versatile Express")
.atag_offset = 0x100,
+ .soc = &vexpress_soc_desc,
.map_io = v2m_map_io,
.init_early = v2m_init_early,
.init_irq = v2m_init_irq,
diff --git a/arch/arm/plat-versatile/include/plat/platsmp.h b/arch/arm/plat-versatile/include/plat/platsmp.h
new file mode 100644
index 0000000..50fb830
--- /dev/null
+++ b/arch/arm/plat-versatile/include/plat/platsmp.h
@@ -0,0 +1,14 @@
+/*
+ * linux/arch/arm/plat-versatile/include/plat/platsmp.h
+ *
+ * Copyright (C) 2011 ARM Ltd.
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+extern void versatile_secondary_startup(void);
+extern void versatile_secondary_init(unsigned int cpu);
+extern int versatile_boot_secondary(unsigned int cpu, struct task_struct *idle);
diff --git a/arch/arm/plat-versatile/platsmp.c b/arch/arm/plat-versatile/platsmp.c
index 92f18d3..d403022 100644
--- a/arch/arm/plat-versatile/platsmp.c
+++ b/arch/arm/plat-versatile/platsmp.c
@@ -39,7 +39,7 @@ static void __cpuinit write_pen_release(int val)
static DEFINE_SPINLOCK(boot_lock);
-void __cpuinit platform_secondary_init(unsigned int cpu)
+void __cpuinit versatile_secondary_init(unsigned int cpu)
{
/*
* if any interrupts are already enabled for the primary
@@ -61,7 +61,7 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
spin_unlock(&boot_lock);
}
-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+int __cpuinit versatile_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
unsigned long timeout;
--
1.7.0.4
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