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Merge branch 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm
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Pull #1 ARM updates from Russell King:
 "This one covers stuff which Arnd is waiting for me to push, as this is
  shared between both our trees and probably other trees elsewhere.

  Essentially, this contains:
   - AMBA primecell device initializer updates - mostly shrinking the
     size of the device declarations in platform code to something more
     reasonable.
   - Getting rid of the NO_IRQ crap from AMBA primecell stuff.
   - Nicolas' idle cleanups.  This in combination with the restart
     cleanups from the last merge window results in a great many
     mach/system.h files being deleted."

Yay: ~80 files, ~2000 lines deleted.

* 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm: (60 commits)
  ARM: remove disable_fiq and arch_ret_to_user macros
  ARM: make entry-macro.S depend on !MULTI_IRQ_HANDLER
  ARM: rpc: make default fiq handler run-time installed
  ARM: make arch_ret_to_user macro optional
  ARM: amba: samsung: use common amba device initializers
  ARM: amba: spear: use common amba device initializers
  ARM: amba: nomadik: use common amba device initializers
  ARM: amba: u300: use common amba device initializers
  ARM: amba: lpc32xx: use common amba device initializers
  ARM: amba: netx: use common amba device initializers
  ARM: amba: bcmring: use common amba device initializers
  ARM: amba: ep93xx: use common amba device initializers
  ARM: amba: omap2: use common amba device initializers
  ARM: amba: integrator: use common amba device initializers
  ARM: amba: realview: get rid of private platform amba_device initializer
  ARM: amba: versatile: get rid of private platform amba_device initializer
  ARM: amba: vexpress: get rid of private platform amba_device initializer
  ARM: amba: provide common initializers for static amba devices
  ARM: amba: make use of -1 IRQs warn
  ARM: amba: u300: get rid of NO_IRQ initializers
  ...
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@torvalds
torvalds committed Mar 24, 2012
2 parents bab2d8c + 61b8008 commit 56c10bf
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Showing 202 changed files with 931 additions and 2,897 deletions.
6 changes: 6 additions & 0 deletions arch/arm/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -186,6 +186,9 @@ config GENERIC_ISA_DMA
config FIQ
bool

config NEED_RET_TO_USER
bool

config ARCH_MTD_XIP
bool

Expand Down Expand Up @@ -479,13 +482,15 @@ config ARCH_IOP13XX
select ARCH_SUPPORTS_MSI
select VMSPLIT_1G
select NEED_MACH_MEMORY_H
select NEED_RET_TO_USER
help
Support for Intel's IOP13XX (XScale) family of processors.

config ARCH_IOP32X
bool "IOP32x-based"
depends on MMU
select CPU_XSCALE
select NEED_RET_TO_USER
select PLAT_IOP
select PCI
select ARCH_REQUIRE_GPIOLIB
Expand All @@ -497,6 +502,7 @@ config ARCH_IOP33X
bool "IOP33x-based"
depends on MMU
select CPU_XSCALE
select NEED_RET_TO_USER
select PLAT_IOP
select PCI
select ARCH_REQUIRE_GPIOLIB
Expand Down
156 changes: 78 additions & 78 deletions arch/arm/Kconfig.debug
View file
Original file line number Diff line number Diff line change
Expand Up @@ -81,25 +81,6 @@ choice
prompt "Kernel low-level debugging port"
depends on DEBUG_LL

config DEBUG_LL_UART_NONE
bool "No low-level debugging UART"
help
Say Y here if your platform doesn't provide a UART option
below. This relies on your platform choosing the right UART
definition internally in order for low-level debugging to
work.

config DEBUG_ICEDCC
bool "Kernel low-level debugging via EmbeddedICE DCC channel"
help
Say Y here if you want the debug print routines to direct
their output to the EmbeddedICE macrocell's DCC channel using
co-processor 14. This is known to work on the ARM9 style ICE
channel and on the XScale with the PEEDI.

Note that the system will appear to hang during boot if there
is nothing connected to read from the DCC.

config AT91_DEBUG_LL_DBGU0
bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
depends on HAVE_AT91_DBGU0
Expand All @@ -108,20 +89,6 @@ choice
bool "Kernel low-level debugging on 9263, 9g45 and cap9"
depends on HAVE_AT91_DBGU1

config DEBUG_FOOTBRIDGE_COM1
bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
depends on FOOTBRIDGE
help
Say Y here if you want the debug print routines to direct
their output to the 8250 at PCI COM1.

config DEBUG_DC21285_PORT
bool "Kernel low-level debugging messages via footbridge serial port"
depends on FOOTBRIDGE
help
Say Y here if you want the debug print routines to direct
their output to the serial port in the DC21285 (Footbridge).

config DEBUG_CLPS711X_UART1
bool "Kernel low-level debugging messages via UART1"
depends on ARCH_CLPS711X
Expand All @@ -136,6 +103,20 @@ choice
Say Y here if you want the debug print routines to direct
their output to the second serial port on these devices.

config DEBUG_DC21285_PORT
bool "Kernel low-level debugging messages via footbridge serial port"
depends on FOOTBRIDGE
help
Say Y here if you want the debug print routines to direct
their output to the serial port in the DC21285 (Footbridge).

config DEBUG_FOOTBRIDGE_COM1
bool "Kernel low-level debugging messages via footbridge 8250 at PCI COM1"
depends on FOOTBRIDGE
help
Say Y here if you want the debug print routines to direct
their output to the 8250 at PCI COM1.

config DEBUG_HIGHBANK_UART
bool "Kernel low-level debugging messages via Highbank UART"
depends on ARCH_HIGHBANK
Expand Down Expand Up @@ -206,38 +187,42 @@ choice
Say Y here if you want kernel low-level debugging support
on i.MX6Q.

config DEBUG_S3C_UART0
depends on PLAT_SAMSUNG
bool "Use S3C UART 0 for low-level debug"
config DEBUG_MSM_UART1
bool "Kernel low-level debugging messages via MSM UART1"
depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
help
Say Y here if you want the debug print routines to direct
their output to UART 0. The port must have been initialised
by the boot-loader before use.

The uncompressor code port configuration is now handled
by CONFIG_S3C_LOWLEVEL_UART_PORT.
their output to the first serial port on MSM devices.

config DEBUG_S3C_UART1
depends on PLAT_SAMSUNG
bool "Use S3C UART 1 for low-level debug"
config DEBUG_MSM_UART2
bool "Kernel low-level debugging messages via MSM UART2"
depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
help
Say Y here if you want the debug print routines to direct
their output to UART 1. The port must have been initialised
by the boot-loader before use.
their output to the second serial port on MSM devices.

The uncompressor code port configuration is now handled
by CONFIG_S3C_LOWLEVEL_UART_PORT.
config DEBUG_MSM_UART3
bool "Kernel low-level debugging messages via MSM UART3"
depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
help
Say Y here if you want the debug print routines to direct
their output to the third serial port on MSM devices.

config DEBUG_S3C_UART2
depends on PLAT_SAMSUNG
bool "Use S3C UART 2 for low-level debug"
config DEBUG_MSM8660_UART
bool "Kernel low-level debugging messages via MSM 8660 UART"
depends on ARCH_MSM8X60
select MSM_HAS_DEBUG_UART_HS
help
Say Y here if you want the debug print routines to direct
their output to UART 2. The port must have been initialised
by the boot-loader before use.
their output to the serial port on MSM 8660 devices.

The uncompressor code port configuration is now handled
by CONFIG_S3C_LOWLEVEL_UART_PORT.
config DEBUG_MSM8960_UART
bool "Kernel low-level debugging messages via MSM 8960 UART"
depends on ARCH_MSM8960
select MSM_HAS_DEBUG_UART_HS
help
Say Y here if you want the debug print routines to direct
their output to the serial port on MSM 8960 devices.

config DEBUG_REALVIEW_STD_PORT
bool "RealView Default UART"
Expand All @@ -255,42 +240,57 @@ choice
their output to the standard serial port on the RealView
PB1176 platform.

config DEBUG_MSM_UART1
bool "Kernel low-level debugging messages via MSM UART1"
depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
config DEBUG_S3C_UART0
depends on PLAT_SAMSUNG
bool "Use S3C UART 0 for low-level debug"
help
Say Y here if you want the debug print routines to direct
their output to the first serial port on MSM devices.
their output to UART 0. The port must have been initialised
by the boot-loader before use.

config DEBUG_MSM_UART2
bool "Kernel low-level debugging messages via MSM UART2"
depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
The uncompressor code port configuration is now handled
by CONFIG_S3C_LOWLEVEL_UART_PORT.

config DEBUG_S3C_UART1
depends on PLAT_SAMSUNG
bool "Use S3C UART 1 for low-level debug"
help
Say Y here if you want the debug print routines to direct
their output to the second serial port on MSM devices.
their output to UART 1. The port must have been initialised
by the boot-loader before use.

config DEBUG_MSM_UART3
bool "Kernel low-level debugging messages via MSM UART3"
depends on ARCH_MSM7X00A || ARCH_MSM7X30 || ARCH_QSD8X50
The uncompressor code port configuration is now handled
by CONFIG_S3C_LOWLEVEL_UART_PORT.

config DEBUG_S3C_UART2
depends on PLAT_SAMSUNG
bool "Use S3C UART 2 for low-level debug"
help
Say Y here if you want the debug print routines to direct
their output to the third serial port on MSM devices.
their output to UART 2. The port must have been initialised
by the boot-loader before use.

config DEBUG_MSM8660_UART
bool "Kernel low-level debugging messages via MSM 8660 UART"
depends on ARCH_MSM8X60
select MSM_HAS_DEBUG_UART_HS
The uncompressor code port configuration is now handled
by CONFIG_S3C_LOWLEVEL_UART_PORT.

config DEBUG_LL_UART_NONE
bool "No low-level debugging UART"
help
Say Y here if you want the debug print routines to direct
their output to the serial port on MSM 8660 devices.
Say Y here if your platform doesn't provide a UART option
below. This relies on your platform choosing the right UART
definition internally in order for low-level debugging to
work.

config DEBUG_MSM8960_UART
bool "Kernel low-level debugging messages via MSM 8960 UART"
depends on ARCH_MSM8960
select MSM_HAS_DEBUG_UART_HS
config DEBUG_ICEDCC
bool "Kernel low-level debugging via EmbeddedICE DCC channel"
help
Say Y here if you want the debug print routines to direct
their output to the serial port on MSM 8960 devices.
their output to the EmbeddedICE macrocell's DCC channel using
co-processor 14. This is known to work on the ARM9 style ICE
channel and on the XScale with the PEEDI.

Note that the system will appear to hang during boot if there
is nothing connected to read from the DCC.

endchoice

Expand Down
8 changes: 0 additions & 8 deletions arch/arm/include/asm/hardware/entry-macro-iomd.S
View file
Original file line number Diff line number Diff line change
Expand Up @@ -11,14 +11,6 @@
/* IOC / IOMD based hardware */
#include <asm/hardware/iomd.h>

.macro disable_fiq
mov r12, #ioc_base_high
.if ioc_base_low
orr r12, r12, #ioc_base_low
.endif
strb r12, [r12, #0x38] @ Disable FIQ register
.endm

.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldrb \irqstat, [\base, #IOMD_IRQREQB] @ get high priority first
ldr \tmp, =irq_prio_h
Expand Down
1 change: 1 addition & 0 deletions arch/arm/include/asm/system.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,7 @@ extern void cpu_init(void);

void soft_restart(unsigned long);
extern void (*arm_pm_restart)(char str, const char *cmd);
extern void (*arm_pm_idle)(void);

#define UDBG_UNDEFINED (1 << 0)
#define UDBG_SYSCALL (1 << 1)
Expand Down
3 changes: 2 additions & 1 deletion arch/arm/kernel/entry-armv.S
View file
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,9 @@
#include <asm/glue-df.h>
#include <asm/glue-pf.h>
#include <asm/vfpmacros.h>
#ifndef CONFIG_MULTI_IRQ_HANDLER
#include <mach/entry-macro.S>
#endif
#include <asm/thread_notify.h>
#include <asm/unwind.h>
#include <asm/unistd.h>
Expand Down Expand Up @@ -1101,7 +1103,6 @@ __stubs_start:
* get out of that mode without clobbering one register.
*/
vector_fiq:
disable_fiq
subs pc, lr, #4

/*=============================================================================
Expand Down
8 changes: 7 additions & 1 deletion arch/arm/kernel/entry-common.S
View file
Original file line number Diff line number Diff line change
Expand Up @@ -10,9 +10,15 @@

#include <asm/unistd.h>
#include <asm/ftrace.h>
#include <mach/entry-macro.S>
#include <asm/unwind.h>

#ifdef CONFIG_NEED_RET_TO_USER
#include <mach/entry-macro.S>
#else
.macro arch_ret_to_user, tmp1, tmp2
.endm
#endif

#include "entry-header.S"


Expand Down
27 changes: 16 additions & 11 deletions arch/arm/kernel/process.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -61,8 +61,6 @@ extern void setup_mm_for_reboot(void);

static volatile int hlt_counter;

#include <mach/system.h>

void disable_hlt(void)
{
hlt_counter++;
Expand Down Expand Up @@ -181,13 +179,17 @@ void cpu_idle_wait(void)
EXPORT_SYMBOL_GPL(cpu_idle_wait);

/*
* This is our default idle handler. We need to disable
* interrupts here to ensure we don't miss a wakeup call.
* This is our default idle handler.
*/

void (*arm_pm_idle)(void);

static void default_idle(void)
{
if (!need_resched())
arch_idle();
if (arm_pm_idle)
arm_pm_idle();
else
cpu_do_idle();
local_irq_enable();
}

Expand Down Expand Up @@ -215,26 +217,29 @@ void cpu_idle(void)
cpu_die();
#endif

/*
* We need to disable interrupts here
* to ensure we don't miss a wakeup call.
*/
local_irq_disable();
#ifdef CONFIG_PL310_ERRATA_769419
wmb();
#endif
if (hlt_counter) {
local_irq_enable();
cpu_relax();
} else {
} else if (!need_resched()) {
stop_critical_timings();
if (cpuidle_idle_call())
pm_idle();
start_critical_timings();
/*
* This will eventually be removed - pm_idle
* functions should always return with IRQs
* enabled.
* pm_idle functions must always
* return with IRQs enabled.
*/
WARN_ON(irqs_disabled());
} else
local_irq_enable();
}
}
leds_event(led_idle_end);
rcu_idle_exit();
Expand Down
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