u-boot.git/arch/nios2/cpu, branch v2016.03

nios2: set up the debug UART early

2016-02-06T07:14:25+00:00

Set up the debug UART early if enabled, so that it is ready to use.

Signed-off-by: Thomas Chou 
Acked-by: Chin Liang See

Fix board init code to respect the C runtime environment

2016-01-14T02:05:17+00:00

board_init_f_mem() alters the C runtime environment's
stack it is actually already using. This is not a valid
behaviour within a C runtime environment.

Split board_init_f_mem into C functions which do not alter
their own stack and always behave properly with respect to
their C runtime environment.

Signed-off-by: Albert ARIBAUD 
Acked-by: Thomas Chou

nios2: display altera sysid at startup

2015-12-19T01:51:19+00:00

Display altera sysid at startup, which was once removed during
the move.

Signed-off-by: Thomas Chou 
Acked-by: Marek Vasut

nios2: fix cached mode in clearing the BSS

2015-11-06T01:14:12+00:00

As the generic board runs in cached mode, it should not use
"stwio" which bypass the cache.

Signed-off-by: Thomas Chou 
Reviewed-by: Chin Liang See

nios2: remove CONFIG_SYS_INIT_SP macro

2015-11-06T01:14:12+00:00

Remove CONFIG_SYS_INIT_SP macro, as the initial stack is set to
below the u-boot code.

Signed-off-by: Thomas Chou 
Reviewed-by: Marek Vasut 
Reviewed-by: Chin Liang See

nios2: change virt_to_phys to use physaddr_mask in global data

2015-11-06T01:14:11+00:00

As virt_to_phys() is used a lot in DMA transfer, change it
to use physaddr_mask in global data. This will save an "if"
statement and get a little faster.

Signed-off-by: Thomas Chou 
Acked-by: Marek Vasut

nios2: fix map_physmem to do real cache mapping

2015-11-06T01:14:11+00:00

Fix the map_physmem() to do real cache mapping.

Signed-off-by: Thomas Chou 
Acked-by: Marek Vasut

nios2: convert copy_exception_trampoline to use dm cpu data

2015-10-22T23:58:58+00:00

Convert copy_exception_trampoline() to use dm cpu data.

Signed-off-by: Thomas Chou

nios2: convert cache flush to use dm cpu data

2015-10-22T23:58:20+00:00

Convert cache flush to use dm cpu data.

The original cache flush functions are written in assembly
and use CONFIG_SYS_{I,D}CACHE_SIZE... macros. It is difficult
to convert to use cache configuration in dm cpu data which is
extracted from device tree.

The cacheflush.c of Linux nios2 arch uses cpuinfo structure,
which is very close to our dm cpu data. So we copy and modify
it to arch/nios2/lib/cache.c to replace the old cache.S.

Signed-off-by: Thomas Chou

nios2: set default cache configuration in start.S

2015-10-22T23:37:20+00:00

Set default icache and dcache configuration for start.S.

We want to remove the CONFIG_SYS_{I,D}CACHE_SIZE...
configuration macros. As we are just barely starting from
reset, there is no luxury of device tree.

We will set some maximum cache configuration so that it will
work for most configurations. This is used only in this
start.S. The speed penalty is only once here.

After start up, during board initialization, cpu information
will be extracted from device tree. Then cache flush operations
will have correct cache configurations.

Signed-off-by: Thomas Chou 
Acked-by: Marek Vasut