[PATCH v6 04/15] ARM: SoC: convert OMAP4 to SoC descriptor
Marc Zyngier
marc.zyngier at arm.com
Tue Feb 7 19:30:48 EST 2012
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 at ti.com>
Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
---
arch/arm/mach-omap2/board-4430sdp.c | 1 +
arch/arm/mach-omap2/board-omap4panda.c | 1 +
arch/arm/mach-omap2/common.h | 13 +++++++++++++
arch/arm/mach-omap2/omap-hotplug.c | 6 +++---
arch/arm/mach-omap2/omap-smp.c | 24 ++++++++++++++++++++----
arch/arm/mach-omap2/omap4-common.c | 7 +++++++
6 files changed, 45 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 39fba9d..21834d1 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -914,6 +914,7 @@ static void __init omap_4430sdp_init(void)
MACHINE_START(OMAP_4430SDP, "OMAP4430 4430SDP board")
/* Maintainer: Santosh Shilimkar - Texas Instruments Inc */
.atag_offset = 0x100,
+ .soc = &omap4_soc_desc,
.reserve = omap_reserve,
.map_io = omap4_map_io,
.init_early = omap4430_init_early,
diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c
index 30ad40d..f84cc0b 100644
--- a/arch/arm/mach-omap2/board-omap4panda.c
+++ b/arch/arm/mach-omap2/board-omap4panda.c
@@ -500,6 +500,7 @@ static void __init omap4_panda_init(void)
MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
/* Maintainer: David Anders - Texas Instruments Inc */
.atag_offset = 0x100,
+ .soc = &omap4_soc_desc,
.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 febffde..961b79a 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -194,8 +194,21 @@ 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 int omap4_cpu_kill(unsigned int cpu);
+extern void omap4_cpu_die(unsigned int cpu);
+extern int omap4_cpu_disable(unsigned int cpu);
+
+struct arm_soc_smp_init_ops;
+struct arm_soc_smp_ops;
+
+extern struct arm_soc_smp_init_ops omap4_soc_smp_init_ops;
+extern struct arm_soc_smp_ops omap4_soc_smp_ops;
#endif
+struct arm_soc_desc;
+extern struct arm_soc_desc omap4_soc_desc;
+
#if defined(CONFIG_SMP) && defined(CONFIG_PM)
extern int omap4_mpuss_init(void);
extern int omap4_enter_lowpower(unsigned int cpu, unsigned int power_state);
diff --git a/arch/arm/mach-omap2/omap-hotplug.c b/arch/arm/mach-omap2/omap-hotplug.c
index adbe4d8..e794f4b 100644
--- a/arch/arm/mach-omap2/omap-hotplug.c
+++ b/arch/arm/mach-omap2/omap-hotplug.c
@@ -24,7 +24,7 @@
#include "powerdomain.h"
-int platform_cpu_kill(unsigned int cpu)
+int omap4_cpu_kill(unsigned int cpu)
{
return 1;
}
@@ -33,7 +33,7 @@ int platform_cpu_kill(unsigned int cpu)
* platform-specific code to shutdown a CPU
* Called with IRQs disabled
*/
-void platform_cpu_die(unsigned int cpu)
+void omap4_cpu_die(unsigned int cpu)
{
unsigned int this_cpu;
@@ -62,7 +62,7 @@ void platform_cpu_die(unsigned int cpu)
}
}
-int platform_cpu_disable(unsigned int cpu)
+int omap4_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-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index c1bf3ef..4d39fd0 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -23,6 +23,7 @@
#include <asm/cacheflush.h>
#include <asm/hardware/gic.h>
#include <asm/smp_scu.h>
+#include <asm/soc.h>
#include <mach/hardware.h>
#include <mach/omap-secure.h>
@@ -40,7 +41,7 @@ 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.
@@ -68,7 +69,7 @@ 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;
@@ -144,7 +145,7 @@ 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, ncores;
@@ -170,7 +171,7 @@ 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)
{
/*
@@ -180,3 +181,18 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
scu_enable(scu_base);
wakeup_secondary();
}
+
+struct arm_soc_smp_init_ops omap4_soc_smp_init_ops __initdata = {
+ .smp_init_cpus = omap4_smp_init_cpus,
+ .smp_prepare_cpus = omap4_smp_prepare_cpus,
+};
+
+struct arm_soc_smp_ops omap4_soc_smp_ops __initdata = {
+ .smp_secondary_init = omap4_secondary_init,
+ .smp_boot_secondary = omap4_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_kill = omap4_cpu_kill,
+ .cpu_die = omap4_cpu_die,
+ .cpu_disable = omap4_cpu_disable,
+#endif
+};
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index 40a8fbc..0742ddf 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -17,6 +17,7 @@
#include <linux/platform_device.h>
#include <linux/memblock.h>
+#include <asm/soc.h>
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/mach/map.h>
@@ -198,3 +199,9 @@ static int __init omap4_sar_ram_init(void)
return 0;
}
early_initcall(omap4_sar_ram_init);
+
+struct arm_soc_desc omap4_soc_desc __initdata = {
+ .name = "TI OMAP4",
+ soc_smp_init_ops(omap4_soc_smp_init_ops)
+ soc_smp_ops(omap4_soc_smp_ops)
+};
--
1.7.3.4
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