Since commit de39dc7162 ("arm: armv7-a: Compile and tune for armv7-a
instead of armv5") is used -march=armv7-a option for Omap3 platforms.
With directive ".arch_extension sec" it is possible for -march=armv7-a to
directly use ARM SMC instruction.
So enable ".arch_extension sec" in Omap3 lowlevel_init.S and replace hand
assembled ".word 0xe1600071" by "SMC #1".
Since commit 51d0638650 ("arm: omap-common: add secure smc entry") same
pattern is already used in arch/arm/cpu/armv7/omap-common/lowlevel_init.S.
Signed-off-by: Pali Rohár <pali@kernel.org>
This converts the following to Kconfig:
CONFIG_SKIP_LOWLEVEL_INIT
CONFIG_SKIP_LOWLEVEL_INIT_ONLY
In order to do this, we need to introduce SPL and TPL variants of these
options so that we can clearly disable these options only in SPL in some
cases, and both instances in other cases.
Signed-off-by: Tom Rini <trini@konsulko.com>
Function lowlevel_init() is called only from cpu_init_crit() and this
function is wrapped into #if .. #endif section. So compile also
lowlevel_init() function under same #if condition.
Function cpy_clk_code() uses lowlevel_init symbol to get address where
go_to_speed code ends. As this symbol is not available anymore when
compiling with CONFIG_SKIP_LOWLEVEL_INIT, defines a new label
go_to_speed_end at the place where go_to_speed code ends.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
arch/arm/Makefile references armv5 for backwards compatibility with
older compilers. This patch removes those references to armv5,
since by now newer compilers are required which should have armv7
support enabled.
The Makefile also also has a list of options for mtune, but the
entry for CONFIG_CPU_V7A is empty, so this patch tunes the
CPU_V7A architecture to generic-armv7-a.
The following size changed apply to omap3_logic using GCC.
Stock
text data bss dec hex filename
50910 429 67580 118919 1d087 spl/u-boot-spl
540713 22700 327072 890485 d9675 u-boot
Without Armv5
text data bss dec hex filename
50916 429 67580 118925 1d08d spl/u-boot-spl
540719 22700 327064 890483 d9673 u-boot
mtune=generic-armv7-a
text data bss dec hex filename
50932 429 67580 118941 1d09d spl/u-boot-spl
540519 22700 327080 890299 d95bb u-boot
Signed-off-by: Adam Ford <aford173@gmail.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
This moves what was in arch/arm/cpu/armv7/omap-common in to
arch/arm/mach-omap2 and moves
arch/arm/cpu/armv7/{am33xx,omap3,omap4,omap5} in to arch/arm/mach-omap2
as subdirectories. All refernces to the former locations are updated to
the current locations. For the logic to decide what our outputs are,
consolidate the tests into a single config.mk rather than including 4.
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-11-21 14:07:29 -05:00
Renamed from arch/arm/cpu/armv7/omap3/lowlevel_init.S (Browse further)
