u-boot.git/arch/arm/lib, branch v2017.09

env: Rename getenv/_f() to env_get()

2017-08-16T12:30:24+00:00

We are now using an env_ prefix for environment functions. Rename these
two functions for consistency. Also add function comments in common.h.

Quite a few places use getenv() in a condition context, provoking a
warning from checkpatch. These are fixed up in this patch also.

Suggested-by: Wolfgang Denk 
Signed-off-by: Simon Glass

env: Rename setenv() to env_set()

2017-08-16T12:22:18+00:00

We are now using an env_ prefix for environment functions. Rename setenv()
for consistency. Also add function comments in common.h.

Suggested-by: Wolfgang Denk 
Signed-off-by: Simon Glass

armv8: TPL_STACK will always be defined, so test CONFIG_TPL_NEEDS_SEPARATE_STACK

2017-08-13T15:12:35+00:00

Now that TPL_STACK has been moved off the whitelist (ok, I'm lying:
the 'moving off the whitelist' part comes in once moveconfig
runs... which will be a few commits down the line) and added to
Kconfig, we need to test CONFIG_TPL_NEEDS_SEPARATE_STACK to see
whether the value from TPL_STACK should be used or whether we try to
inherit whatever SPL uses.

Signed-off-by: Philipp Tomsich 
Reviewed-by: Simon Glass

armv8: spl: Support separate stack for TPL

2017-08-13T15:12:21+00:00

To allow a TPL and SPL to run from different addresses/memories, we
need to split setup of the TPL and SPL stacks.  To do so, we introduce
CONFIG_TPL_STACK (not listed in Kconfig) which can be used to override
the initial stack pointer for TPL.

To provide backward compatibility for existing boards, this is added
as an optional configuration item and the normal search order (i.e.
SPL_STACK, then SYS_STACK) apply if not defined.

Signed-off-by: Philipp Tomsich 
Reviewed-by: Simon Glass 
Reviewed-by: Tom Rini

Revert "armv7m: Disable D-cache when booting nommu(ARMv7M) Linux kernel"

2017-06-30T01:18:48+00:00

The author of the commit discovered later on that this was already being
done in cleanup_before_linux() on arch/arm/cpu/armv7m/cpu.c.

This reverts commit 8f079cccb369995e46a2ab530d5d60b88c1e70bb.

Signed-off-by: Tom Rini

ARM: provide a valid exception stack address for startup code

2017-06-12T12:38:40+00:00

Create exception stack in IRAM if available to facilitate debugging of
pre-relocation code by catching exceptions rather than stopping dead.

Signed-off-by: Lothar Waßmann

arm: adjust PC displayed in exception handlers to point to the failing instruction

2017-06-12T12:38:39+00:00

Adjust the program counter register to point to the failing
instruction depending on the exeption type.
This makes it easier to localize the offending instruction leading to
a fatal exception.

Signed-off-by: Lothar Waßmann

ARM: remove bogus cp_delay() function

2017-06-12T12:38:39+00:00

The cp_delay() function was introduced because of a missing 'volatile'
attribute to the 'asm' statement in get_cr() which led to the 'mrc'
instruction in get_cr() being optimised out eventually.
This has been fixed in commit 53fd4b8c22bb ("arm: mmu: Add missing volatile for reading SCTLR register")
but the bogus cp_delay() function which was introduced as a workaround
for the malfunctioning get_cr() was never removed.

Signed-off-by: Lothar Waßmann

Merge git://git.denx.de/u-boot-dm

2017-06-10T22:01:22+00:00

armv7m: Disable D-cache when booting nommu(ARMv7M) Linux kernel

2017-06-10T00:34:54+00:00

Disable D-Cache is required when booting nommu Linux kernel.
(please see Linux kernel source "arch/arm/kernel/head-nommu.S")

U-Boot is enabled D-cache and I-Cache at startup.
However, it does not disable D-Cache before
booting nommu Linux kernel.
Therefore, I call dcache_disable()
when the CPU is ARMv7M to fix this problem.

Signed-off-by: Toshifumi NISHINAGA