u-boot.git/arch/arm/lib, branch v2012.07

ARM: lib: Remove CONFIG_ARCH_CPU_INIT dependency

2012-07-20T12:24:08+00:00

Create a weak-aliased arch_cpu_init, so that we can get rid of CONFIG_ARCH_CPU_INIT
and always call arch_cpu_init.

This way we do not need to define CONFIG_ARCH_CPU_INIT in every board file, since
arch_cpu_init() is supposed to handle common CPU level code.

Signed-off-by: Fabio Estevam 
Acked-by: Marek Vasut 
Acked-by: Stefano Babic

ARM: cache: Move the cp15 CR register read before flushing the cache.

2012-07-07T12:07:44+00:00

The following is the cleanup sequence in arch/arm/cpu/armv7/cpu.c

int cleanup_before_linux(void)
{
 ...
 ...
 dcache_disable();
 v7_outer_cache_disable();
 invalidate_dcache_all();
}

 1) invalidate_dcache_all call expects that all the caches has been
 flushed, invalidated and there are no dirty entries prior to its
 execution.  In the above sequence dcache_disable() flushes, invalidates
 the caches and turns off the  mmu. But after it cleanups the cache
 and before the mmu is disabled  there is a cp_delay() function which
 has STR instruction. On certain cores like the cortex-a15, cache hit
 and a write can happen to a cache line even when the dcache is
 disabled. So the above mentioned STR instruction creates a dirty entry
 after cleaning. The mmu gets disabled after this.

 2) invalidate_dcache_all invalidates the cache lines. Again on
 cores like cortex-a15, invalidate instruction flushes the dirty
 line as well. So some times the dirty line from sequence 1
 can corrupt the memory resulting in a crash.

 Fixing this by moving the get_cr() and cp_delay() calls before
 cleaning up the cache, thus avoiding the dirty entry.

Signed-off-by: R Sricharan

ARM: introduce arch_early_init_r()

2012-07-07T12:07:44+00:00

Introduce arch_early_init_r() function, which can be useful for doing
early initialization after relocation has happened.

Signed-off-by: Fabio Estevam

arm: Don't use printf() in SPL builds

2012-07-07T12:07:43+00:00

raise() likes to call printf() if it is available, but in SPL builds it
either is not available, or adds a large chunk to the resulting image
size.

So don't call it even if it is available.

This change reduces SPL size from 10KB to 6.3KB on hawkboard, for
example, using generic relocation.

Signed-off-by: Simon Glass 
Acked-by: Stefan Roese

net: move bootfile init into eth_initialize

2012-05-15T22:32:33+00:00

All arches init this the same way, so move the logic into the core
net code to avoid duplicating it everywhere else.

Signed-off-by: Mike Frysinger 
Reviewed-by: Joe Hershberger

net: punt bd->bi_ip_addr

2012-05-15T22:32:05+00:00

This field gets read in one place (by "bdinfo"), and we can replace
that with getenv("ipaddr").  After all, the bi_ip_addr field is kept
up-to-date implicitly with the value of the ipaddr env var.

Signed-off-by: Mike Frysinger 
Reviewed-by: Joe Hershberger

arm: restore fdt_fixup_ethernet call to do_bootm_linux

2012-04-23T20:11:18+00:00

Commit 0a672d4 "arm: Add Prep subcommand support to bootm" re-organized
do_bootm_linux for ARM. During the re-organization, the call to
fdt_fixup_ethernet() was removed. I assume this was useful, so add it
back.

Signed-off-by: Stephen Warren 
Acked-by: Tom Rini

arm: fix bootm with device tree

2012-04-23T20:10:41+00:00

Commit 0a672d4 "arm: Add Prep subcommand support to bootm" re-organized
do_bootm_linux() for ARM. During the re-organization, the code to pass
the device tree to the kernel was removed. Add it back. This restores
the ability to boot a kernel using device tree.

Signed-off-by: Stephen Warren 
Acked-by: Tom Rini 
Acked-by: Allen Martin 
Tested-by: Allen Martin

BOOT: Add "bootz" command to boot Linux zImage on ARM

2012-03-30T20:58:55+00:00

This command boots Linux zImage from where the zImage is loaded to. Passing
initrd and fdt is supported.

Tested on i.MX28 based DENX M28EVK
Tested on PXA270 based Voipac PXA270.

NOTE: This currently only supports ARM, but other architectures can be easily
added by defining bootz_setup().

Signed-off-by: Marek Vasut 
Cc: Tom Warren 
Cc: albert.u.boot@aribaud.net
Cc: afleming@gmail.com,
Cc: Simon Glass ,
Cc: Stephen Warren 
Cc: Nicolas Pitre 
Cc: Wolfgang Denk 
Cc: Detlev Zundel

arm: Check for valid FDT after console is up

2012-03-29T06:12:49+00:00

When using CONFIG_OF_CONTROL, add a check that we have a valid FDT
and panic() if not. This must be done after the console is ready.

Signed-off-by: Simon Glass 
Signed-off-by: Tom Warren