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Date: Thu, 24 Jan 2013 16:36:23 +0530
From: Vineet Gupta <Vineet.Gupta1@...opsys.com>
To: <linux-arch@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <arnd@...db.de>, Vineet Gupta <Vineet.Gupta1@...opsys.com>
Subject: [PATCH v3 63/71] ARC: [Review] Multi-platform image #3: switch to board callback
-platform API is retired and instead callbacks are used
Signed-off-by: Vineet Gupta <vgupta@...opsys.com>
Cc: Arnd Bergmann <arnd@...db.de>
Acked-by: Arnd Bergmann <arnd@...db.de>
---
arch/arc/include/asm/irq.h | 1 -
arch/arc/include/asm/smp.h | 5 ---
arch/arc/kernel/irq.c | 2 -
arch/arc/kernel/setup.c | 5 ---
arch/arc/kernel/smp.c | 1 -
arch/arc/plat-arcfpga/include/plat/irq.h | 2 +
arch/arc/plat-arcfpga/include/plat/smp.h | 2 +
arch/arc/plat-arcfpga/irq.c | 2 +-
arch/arc/plat-arcfpga/platform.c | 50 +++++++++++++++++++++++++-----
arch/arc/plat-arcfpga/smp.c | 4 +--
10 files changed, 48 insertions(+), 26 deletions(-)
diff --git a/arch/arc/include/asm/irq.h b/arch/arc/include/asm/irq.h
index c91b2e4..f1b318d 100644
--- a/arch/arc/include/asm/irq.h
+++ b/arch/arc/include/asm/irq.h
@@ -17,7 +17,6 @@
#include <asm-generic/irq.h>
extern void __init arc_init_IRQ(void);
-extern void __init plat_init_IRQ(void);
extern int __init get_hw_config_num_irq(void);
void __cpuinit arc_local_timer_setup(unsigned int cpu);
diff --git a/arch/arc/include/asm/smp.h b/arch/arc/include/asm/smp.h
index f91f194..0cff3a5 100644
--- a/arch/arc/include/asm/smp.h
+++ b/arch/arc/include/asm/smp.h
@@ -46,10 +46,6 @@ extern int smp_ipi_irq_setup(int cpu, int irq);
* arc_platform_smp_cpuinfo:
* returns a string containing info for /proc/cpuinfo
*
- * arc_platform_smp_init_cpu:
- * Called from start_kernel_secondary to do any CPU local setup
- * such as starting a timer, setting up IPI etc
- *
* arc_platform_smp_wait_to_boot:
* Called from early bootup code for non-Master CPUs to "park" them
*
@@ -64,7 +60,6 @@ extern int smp_ipi_irq_setup(int cpu, int irq);
* Takes @cpu which got IPI at @irq to do any IPI clearing
*/
extern const char *arc_platform_smp_cpuinfo(void);
-extern void arc_platform_smp_init_cpu(void);
extern void arc_platform_smp_wait_to_boot(int cpu);
extern void arc_platform_smp_wakeup_cpu(int cpu, unsigned long pc);
extern void arc_platform_ipi_send(const struct cpumask *callmap);
diff --git a/arch/arc/kernel/irq.c b/arch/arc/kernel/irq.c
index 1198168..551c10d 100644
--- a/arch/arc/kernel/irq.c
+++ b/arch/arc/kernel/irq.c
@@ -124,7 +124,6 @@ void __init init_onchip_IRQ(void)
void __init init_IRQ(void)
{
init_onchip_IRQ();
- plat_init_IRQ();
/* Any external intc can be setup here */
if (machine_desc->init_irq)
@@ -132,7 +131,6 @@ void __init init_IRQ(void)
#ifdef CONFIG_SMP
/* Master CPU can initialize it's side of IPI */
- arc_platform_smp_init_cpu();
if (machine_desc->init_smp)
machine_desc->init_smp(smp_processor_id());
#endif
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 20273b8..e591c6a 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -319,10 +319,6 @@ void __init setup_processor(void)
arc_chk_fpu();
}
-void __init __attribute__((weak)) arc_platform_early_init(void)
-{
-}
-
void __init setup_arch(char **cmdline_p)
{
#ifdef CONFIG_CMDLINE_UBOOT
@@ -347,7 +343,6 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
/* Platform/board specific: e.g. early console registration */
- arc_platform_early_init();
if (machine_desc->init_early)
machine_desc->init_early();
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index ea15f07..8ee010f 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -127,7 +127,6 @@ void __cpuinit start_kernel_secondary(void)
pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu);
- arc_platform_smp_init_cpu();
if (machine_desc->init_smp)
machine_desc->init_smp(smp_processor_id());
diff --git a/arch/arc/plat-arcfpga/include/plat/irq.h b/arch/arc/plat-arcfpga/include/plat/irq.h
index 255b90e..6515df2 100644
--- a/arch/arc/plat-arcfpga/include/plat/irq.h
+++ b/arch/arc/plat-arcfpga/include/plat/irq.h
@@ -32,4 +32,6 @@
#define IDU_INTERRUPT_0 16
#endif
+extern void __init plat_fpga_init_IRQ(void);
+
#endif
diff --git a/arch/arc/plat-arcfpga/include/plat/smp.h b/arch/arc/plat-arcfpga/include/plat/smp.h
index 8c5e46c..27822ac 100644
--- a/arch/arc/plat-arcfpga/include/plat/smp.h
+++ b/arch/arc/plat-arcfpga/include/plat/smp.h
@@ -110,6 +110,8 @@ struct idu_irq_status {
extern void idu_irq_set_tgtcpu(uint8_t irq, uint32_t mask);
extern void idu_irq_set_mode(uint8_t irq, uint8_t dest_mode, uint8_t trig_mode);
+extern void iss_model_init_smp(unsigned int cpu);
+
#endif /* CONFIG_SMP */
#endif
diff --git a/arch/arc/plat-arcfpga/irq.c b/arch/arc/plat-arcfpga/irq.c
index 590edd1..0ea43c2 100644
--- a/arch/arc/plat-arcfpga/irq.c
+++ b/arch/arc/plat-arcfpga/irq.c
@@ -11,7 +11,7 @@
#include <linux/interrupt.h>
#include <asm/irq.h>
-void __init plat_init_IRQ(void)
+void __init plat_fpga_init_IRQ(void)
{
/*
* SMP Hack because UART IRQ hardwired to cpu0 (boot-cpu) but if the
diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c
index b7f63e3..ac85d69 100644
--- a/arch/arc/plat-arcfpga/platform.c
+++ b/arch/arc/plat-arcfpga/platform.c
@@ -18,7 +18,9 @@
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/clk.h>
+#include <asm/mach_desc.h>
#include <plat/memmap.h>
+#include <plat/smp.h>
/*-----------------------BVCI Latency Unit -----------------------------*/
@@ -153,10 +155,7 @@ static void arc_fpga_serial_init(void)
#endif
}
-/*
- * Early Platform Initialization called from setup_arch()
- */
-void __init arc_platform_early_init(void)
+static void __init plat_fpga_early_init(void)
{
pr_info("[plat-arcfpga]: registering early dev resources\n");
@@ -172,7 +171,7 @@ static struct of_dev_auxdata plat_auxdata_lookup[] __initdata = {
{}
};
-int __init fpga_plat_init(void)
+static void __init plat_fpga_populate_dev(void)
{
pr_info("[plat-arcfpga]: registering device resources\n");
@@ -182,7 +181,42 @@ int __init fpga_plat_init(void)
*/
of_platform_populate(NULL, of_default_bus_match_table,
plat_auxdata_lookup, NULL);
-
- return 0;
}
-arch_initcall(fpga_plat_init);
+
+/*----------------------- Machine Descriptions ------------------------------
+ *
+ * Machine description is simply a set of platform/board specific callbacks
+ * This is not directly related to DeviceTree based dynamic device creation,
+ * however as part of early device tree scan, we also select the right
+ * callback set, by matching the DT compatible name.
+ */
+
+static const char *aa4_compat[] __initdata = {
+ "snps,arc-angel4",
+ NULL,
+};
+
+MACHINE_START(ANGEL4, "angel4")
+ .dt_compat = aa4_compat,
+ .init_early = plat_fpga_early_init,
+ .init_machine = plat_fpga_populate_dev,
+ .init_irq = plat_fpga_init_IRQ,
+#ifdef CONFIG_SMP
+ .init_smp = iss_model_init_smp,
+#endif
+MACHINE_END
+
+static const char *ml509_compat[] __initdata = {
+ "snps,arc-ml509",
+ NULL,
+};
+
+MACHINE_START(ML509, "ml509")
+ .dt_compat = ml509_compat,
+ .init_early = plat_fpga_early_init,
+ .init_machine = plat_fpga_populate_dev,
+ .init_irq = plat_fpga_init_IRQ,
+#ifdef CONFIG_SMP
+ .init_smp = iss_model_init_smp,
+#endif
+MACHINE_END
diff --git a/arch/arc/plat-arcfpga/smp.c b/arch/arc/plat-arcfpga/smp.c
index a95fcdb..fec1879 100644
--- a/arch/arc/plat-arcfpga/smp.c
+++ b/arch/arc/plat-arcfpga/smp.c
@@ -63,10 +63,8 @@ void arc_platform_smp_wakeup_cpu(int cpu, unsigned long pc)
* -Master : init_IRQ()
* -Other(s) : start_kernel_secondary()
*/
-void arc_platform_smp_init_cpu(void)
+void iss_model_init_smp(unsigned int cpu)
{
- int cpu = smp_processor_id();
-
/* Check if CPU is configured for more than 16 interrupts */
if (NR_IRQS <= 16 || get_hw_config_num_irq() <= 16)
panic("[arcfpga] IRQ system can't support IDU IPI\n");
--
1.7.4.1
--
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