linux-toradex.git/arch/sparc/kernel/setup_32.c, branch v4.4.26

sparc32: fix sparse warnings in setup_32.c

2014-04-29T05:12:25+00:00

Fix following warnings:
setup_32.c:106:15: warning: symbol 'cmdline_memory_size' was not declared. Should it be static?
setup_32.c:270:16: warning: symbol 'fake_swapper_regs' was not declared. Should it be static?
setup_32.c:368:55: warning: Using plain integer as NULL pointer

Add missing declaration of cmdline_memory_size and remove the local one in init_32.c
fake_swapper_regs was only used locally - so defined static.
When replacing 0 with NULL also add a few spaces around operators

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: kernel: using strlcpy() instead of strcpy()

2013-06-19T09:10:29+00:00

'boot_command_line' and 'full_boot_str' has a fix length, 'cmdline_p' and
'boot_command' maybe larger than them. So use strlcpy() instead of strcpy()
to avoid memory overflow.

Signed-off-by: Zhao Hongjiang 
Signed-off-by: David S. Miller

sparc32: centralize all mmu context handling in srmmu.c

2012-07-26T23:46:16+00:00

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc32: add support for run-time patching of leon/sun single instructions

2012-05-28T06:52:43+00:00

This will be used to handle that MMUREGS has different ASI for SUN and LEON.
This is the infrastructure only - users will come later.

Signed-off-by: Sam Ravnborg 
Cc: Daniel Hellstrom 
Cc: Konrad Eisele

sparc32: introduce sparc32_start_kernel called from head_32.S

2012-05-28T06:52:42+00:00

This gives us a C hook before we call start_kernel()

Signed-off-by: Sam Ravnborg

sparc32: use flushi when run-time patching in per_cpu_patch

2012-05-20T20:33:36+00:00

Davis S. Miller wrote:
"
The way we do that now is overkill.  We only needed to use the MMU
cache ops when we had sun4c around because sun4c lacked support for
the "flush" instruction.

But all sun4m and later chips have it so we can use it
unconditionally.

So in the per_cpu_patch() code, get rid of the cache ops invocation,
and instead execute a "flush %reg" after each of the instruction patch
assignments, where %reg is set to the address of the instruction that
was stored into.

Perhaps take the flushi() definition from asm/cacheflush_64.h and
place it into asm/cacheflush.h, then you can simply use that.
"

Implemented as per suggestion.
Moved run-time patching before we call paging_init(),
so helper methods in paging_init() may utilise run-time patching too.

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc32: fix cpuid_patch run-time patching

2012-05-20T20:33:35+00:00

We hang forever when trying to do run-time patching of instructions
identified by the cpuid_patch section

Signed-off-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc32: Kill boot_cpu_id4

2012-05-20T04:40:50+00:00

It is written, but never actually read.

Signed-off-by: David S. Miller

sparc32: Implement hard_smp_processor_id() via instruction patching.

2012-05-14T20:31:38+00:00

This is the last non-trivial user of btfixup.

Like sparc64, use a special patch section to resolve the various
implementations of how to read the current CPU's ID when we don't
have current_thread_info()->cpu necessarily available.

Signed-off-by: David S. Miller 
Tested-by: Sam Ravnborg

sparc32: Remove sun4 and sun4c from enum sparc_cpu.

2012-05-12T07:23:23+00:00

All the remaining references are trivially removed since we've
just eliminated the final reference to sparc_cpu_model from
assembler code in commit b7d96ce189564e661909fbf8df39d7358149885b
("sparc32: Remove sparc_cpu_model read from floppy interrupt handler.")

Signed-off-by: David S. Miller