linux.git/arch/metag/kernel/setup.c, branch v3.11

metag/setup: Restrict scope for the capabilities variable

2013-06-13T11:55:29+00:00

Signed-off-by: Markos Chandras 
Signed-off-by: James Hogan

metag: of_platform_populate from arch generic code

2013-06-13T11:14:06+00:00

If no init_machine callback is provided, call of_platform_populate()
instead. This allows a board/SoC that only needs to call
of_platform_populate to omit the callback altogether.

Signed-off-by: James Hogan 
Cc: Grant Likely 
Cc: Rob Herring 
Cc: Arnd Bergmann 
Cc: devicetree-discuss@lists.ozlabs.org

metag: export _metag_da_present and cpu_2_hwthread_id

2013-03-27T14:37:52+00:00

Export the symbols _metag_da_present and cpu_2_hwthread_id to modules
(GPL only) to allow the imgdafs file system to be built as a module.

Signed-off-by: James Hogan

metag: copy devicetree to non-init memory

2013-03-02T20:11:17+00:00

Make a copy of the device tree blob in non-init memory. It is required
when using built-in device tree files that the platform code copies the
blob to non-init memory prior to calling unflatten_device_tree(),
otherwise the strings that the device tree refer to will get poisoned
and potentially reused, breaking later reading of the device tree
post-init (such as compatible matching in modules, debugfs, and the
procfs interface).

Signed-off-by: James Hogan 
Reviewed-by: Vineet Gupta

metag: move setup.c exports out of metag_ksyms.c

2013-03-02T20:11:15+00:00

It's less error prone to have function symbols exported immediately
after the function rather than in metag_ksyms.c. Move each EXPORT_SYMBOL
in metag_ksyms.c for symbols defined in setup.c into setup.c

Signed-off-by: James Hogan

metag: protect more non-MMU memory regions

2013-03-02T20:09:58+00:00

Rename setup_txprivext() to setup_priv() and add initialisation of some
more per-thread privilege protection registers:

 - TxPRIVSYSR: 0x04400000-0x047fffff
               0x05000000-0x07ffffff
               0x84000000-0x87ffffff
 - TxPIOREG:   0x02000000-0x02ffffff
               0x04800000-0x048fffff
 - TxSYREG:    0x04000000-0x04000fff (except write fetch system event)

Signed-off-by: James Hogan

metag: make TXPRIVEXT bits explicit

2013-03-02T20:09:58+00:00

Define PRIV_BITS using explicit constants from  rather
than with a hard coded value. This also adds a couple of missing
definitions for the TXPRIVEXT priv bits for protecting writes to TXTIMER
and the trace registers.

Signed-off-by: James Hogan

metag: kernel/setup.c: sort includes

2013-03-02T20:09:57+00:00

Sort includes in kernel/setup.c.

Signed-off-by: James Hogan

metag: Add JTAG Debug Adapter (DA) support

2013-03-02T20:09:56+00:00

Add basic JTAG Debug Adapter (DA) support so that drivers which
communicate with the DA can detect whether one is actually present
(otherwise the target will halt indefinitely).

This allows the metag_da TTY driver and imgdafs filesystem driver to be
built, updates defconfigs, and sets up the metag_da console early if
it's configured in.

Signed-off-by: James Hogan

metag: Boot

2013-03-02T20:09:17+00:00

Add boot code for metag. Due to the multi-threaded nature of Meta it is
not uncommon for an RTOS or bare metal application to be started on
other hardware threads by the bootloader. Since there is a single MMU
switch which affects all threads, the MMU is traditionally configured by
the bootloader prior to starting Linux. The bootloader passes a
structure to Linux which among other things contains information about
memory regions which have been mapped. Linux then assumes control of the
local heap memory region.

A kernel arguments string pointer or a flattened device tree pointer can
be provided in the third argument.

Signed-off-by: James Hogan