linux-toradex.git/arch/arm64/include/asm/io.h, branch v3.10.5 Linux kernel for Apalis and Colibri modules arm64: Define readq and writeq for driver module using 2013-04-19T12:57:46+00:00 Chen Gang gang.chen@asianux.com 2013-04-19T11:24:37+00:00 12f883989cf91afa8509c547feebbc3acbc04497 when compiling with allmodconfig, CONFIG_64BIT=y the file drivers/base/regmap/regmap-mmio.c will use readq and writeq so we need implement these functions. Signed-off-by: Chen Gang <gang.chen@asianux.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> 
when compiling with allmodconfig, CONFIG_64BIT=y the file
drivers/base/regmap/regmap-mmio.c will use readq and writeq so we need
implement these functions.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arm64: Add simple earlyprintk support 2013-01-22T17:51:01+00:00 Catalin Marinas catalin.marinas@arm.com 2012-10-23T13:55:08+00:00 2475ff9d2c6ea3bbfed55c4635426c371f9ad327 This patch adds support for "earlyprintk=" parameter on the kernel command line. The format is: earlyprintk=<name>[,<addr>][,<options>] where <name> is the name of the (UART) device, e.g. "pl011", <addr> is the I/O address. The <options> aren't currently used. The mapping of the earlyprintk device is done very early during kernel boot and there are restrictions on which functions it can call. A special early_io_map() function is added which creates the mapping from the pre-defined EARLY_IOBASE to the device I/O address passed via the kernel parameter. The pgd entry corresponding to EARLY_IOBASE is pre-populated in head.S during kernel boot. Only PL011 is currently supported and it is assumed that the interface is already initialised by the boot loader before the kernel is started. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> 
This patch adds support for "earlyprintk=" parameter on the kernel
command line. The format is:

  earlyprintk=<name>[,<addr>][,<options>]

where <name> is the name of the (UART) device, e.g. "pl011", <addr> is
the I/O address. The <options> aren't currently used.

The mapping of the earlyprintk device is done very early during kernel
boot and there are restrictions on which functions it can call. A
special early_io_map() function is added which creates the mapping from
the pre-defined EARLY_IOBASE to the device I/O address passed via the
kernel parameter. The pgd entry corresponding to EARLY_IOBASE is
pre-populated in head.S during kernel boot.

Only PL011 is currently supported and it is assumed that the interface
is already initialised by the boot loader before the kernel is started.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
arm64: Distinguish between user and kernel XN bits 2012-11-16T15:50:25+00:00 Catalin Marinas catalin.marinas@arm.com 2012-11-15T17:21:16+00:00 8e620b0476696e9428442d3551f3dad47df0e28f On AArch64, the meaning of the XN bit has changed to UXN (user). The PXN (privileged) bit must be set to prevent kernel execution. Without the PXN bit set, the CPU may speculatively access device memory. This patch ensures that all the mappings that the kernel must not execute from (including user mappings) have the PXN bit set. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> 
On AArch64, the meaning of the XN bit has changed to UXN (user). The PXN
(privileged) bit must be set to prevent kernel execution. Without the
PXN bit set, the CPU may speculatively access device memory. This patch
ensures that all the mappings that the kernel must not execute from
(including user mappings) have the PXN bit set.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arm64: Move PCI_IOBASE closer to MODULES_VADDR 2012-10-23T14:30:51+00:00 Catalin Marinas catalin.marinas@arm.com 2012-10-23T13:51:16+00:00 e3978cded41dc7b364e74037f56d6bc558c11fd7 This is to reuse the same pmd table that is sparsely populated with the modules space. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> 
This is to reuse the same pmd table that is sparsely populated with
the modules space.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arm64: Use pgprot_t as the last argument when invoking __ioremap() 2012-10-23T14:30:47+00:00 Catalin Marinas catalin.marinas@arm.com 2012-10-23T13:24:21+00:00 489f781a5936f4b90cd5c9838e0102933f6eb2b5 Even if it works with since the types have the same size, the correct type of the last __ioremap() argument is pgprot_t rather than pteval_t. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> 
Even if it works with since the types have the same size, the correct
type of the last __ioremap() argument is pgprot_t rather than pteval_t.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arm64: Device specific operations 2012-09-17T12:42:04+00:00 Catalin Marinas catalin.marinas@arm.com 2012-03-05T11:49:29+00:00 fc47897d2c65bc94b6868a5c914afbd33216e26f This patch adds several definitions for device communication, including I/O accessors and ioremap(). The __raw_* accessors are implemented as inline asm to avoid compiler generation of post-indexed accesses (less efficient to emulate in a virtualised environment). Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> 
This patch adds several definitions for device communication, including
I/O accessors and ioremap(). The __raw_* accessors are implemented as
inline asm to avoid compiler generation of post-indexed accesses (less
efficient to emulate in a virtualised environment).

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>