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Message-Id: <1347461906-13527-4-git-send-email-arnd@arndb.de>
Date: Wed, 12 Sep 2012 16:58:16 +0200
From: Arnd Bergmann <arnd@...db.de>
To: Marc Zyngier <marc.zyngier@....com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Arnd Bergmann <arnd@...db.de>
Subject: [PATCH v9 03/13] ARM: SoC: convert OMAP4 to SoC descriptor
From: Marc Zyngier <marc.zyngier@....com>
Convert OMAP4 to use the SoC descriptor to provide its SMP
and CPU hotplug operations.
Tested on both Panda and IGEPv2 (MULTI_OMAP kernel)
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@...com>
Signed-off-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
arch/arm/mach-omap2/board-4430sdp.c | 1 +
arch/arm/mach-omap2/board-generic.c | 2 ++
arch/arm/mach-omap2/board-omap4panda.c | 1 +
arch/arm/mach-omap2/common.h | 5 +++++
arch/arm/mach-omap2/omap-hotplug.c | 16 +---------------
arch/arm/mach-omap2/omap-smp.c | 18 ++++++++++++++----
6 files changed, 24 insertions(+), 19 deletions(-)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index ad8a7d9..0e63d80 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -909,6 +909,7 @@ static void __init omap_4430sdp_init(void)
MACHINE_START(OMAP_4430SDP, "OMAP4430 4430SDP board")
/* Maintainer: Santosh Shilimkar - Texas Instruments Inc */
.atag_offset = 0x100,
+ .smp = smp_ops(omap4_smp_ops),
.reserve = omap_reserve,
.map_io = omap4_map_io,
.init_early = omap4430_init_early,
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 6f93a20..82dcf00 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -127,6 +127,7 @@ static const char *omap4_boards_compat[] __initdata = {
DT_MACHINE_START(OMAP4_DT, "Generic OMAP4 (Flattened Device Tree)")
.reserve = omap_reserve,
+ .smp = smp_ops(omap4_smp_ops),
.map_io = omap4_map_io,
.init_early = omap4430_init_early,
.init_irq = omap_gic_of_init,
@@ -147,6 +148,7 @@ static const char *omap5_boards_compat[] __initdata = {
DT_MACHINE_START(OMAP5_DT, "Generic OMAP5 (Flattened Device Tree)")
.reserve = omap_reserve,
+ .smp = smp_ops(omap4_smp_ops),
.map_io = omap5_map_io,
.init_early = omap5_init_early,
.init_irq = omap_gic_of_init,
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 70f6d1d..abbf239 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -518,6 +518,7 @@ static void __init omap4_panda_init(void)
MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
/* Maintainer: David Anders - Texas Instruments Inc */
.atag_offset = 0x100,
+ .smp = smp_ops(omap4_smp_ops),
.reserve = omap_reserve,
.map_io = omap4_map_io,
.init_early = omap4430_init_early,
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 1f65b18..2296106 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -278,6 +278,11 @@ extern void omap_secondary_startup(void);
extern u32 omap_modify_auxcoreboot0(u32 set_mask, u32 clear_mask);
extern void omap_auxcoreboot_addr(u32 cpu_addr);
extern u32 omap_read_auxcoreboot0(void);
+
+extern void omap4_cpu_die(unsigned int cpu);
+
+extern struct smp_operations omap4_smp_ops;
+
extern void omap5_secondary_startup(void);
#endif
diff --git a/arch/arm/mach-omap2/omap-hotplug.c b/arch/arm/mach-omap2/omap-hotplug.c
index 414083b..2de71a3 100644
--- a/arch/arm/mach-omap2/omap-hotplug.c
+++ b/arch/arm/mach-omap2/omap-hotplug.c
@@ -26,16 +26,11 @@
#include "powerdomain.h"
-int platform_cpu_kill(unsigned int cpu)
-{
- return 1;
-}
-
/*
* platform-specific code to shutdown a CPU
* Called with IRQs disabled
*/
-void __ref platform_cpu_die(unsigned int cpu)
+void __ref omap4_cpu_die(unsigned int cpu)
{
unsigned int boot_cpu = 0;
void __iomem *base = omap_get_wakeupgen_base();
@@ -75,12 +70,3 @@ void __ref platform_cpu_die(unsigned int cpu)
pr_debug("CPU%u: spurious wakeup call\n", cpu);
}
}
-
-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-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index 9a35adf..046fa0d 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -49,7 +49,7 @@ void __iomem *omap4_get_scu_base(void)
return scu_base;
}
-void __cpuinit platform_secondary_init(unsigned int cpu)
+static void __cpuinit omap4_secondary_init(unsigned int cpu)
{
/*
* Configure ACTRL and enable NS SMP bit access on CPU1 on HS device.
@@ -77,7 +77,7 @@ 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 omap4_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
static struct clockdomain *cpu1_clkdm;
static bool booted;
@@ -165,7 +165,7 @@ static void __init wakeup_secondary(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 omap4_smp_init_cpus(void)
{
unsigned int i = 0, ncores = 1, cpu_id;
@@ -196,7 +196,7 @@ 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 omap4_smp_prepare_cpus(unsigned int max_cpus)
{
/*
@@ -207,3 +207,13 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
scu_enable(scu_base);
wakeup_secondary();
}
+
+struct smp_operations omap4_smp_ops __initdata = {
+ .smp_init_cpus = omap4_smp_init_cpus,
+ .smp_prepare_cpus = omap4_smp_prepare_cpus,
+ .smp_secondary_init = omap4_secondary_init,
+ .smp_boot_secondary = omap4_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_die = omap4_cpu_die,
+#endif
+};
--
1.7.10
--
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