u-boot.git/arch/arm/lib, branch v2015.04

Merge branch 'master' of git://git.denx.de/u-boot-tegra

2015-04-03T13:14:38Z

Conflicts: board/armltd/vexpress64/vexpress64.c Signed-off-by: Tom Rini

armv8: semihosting: delete external interface

2015-03-28T16:07:46Z

Now that loading files using semihosting can be done using a command in standard scripts, and we have rewritten the boardfile and added it to the Vexpress64, let's delete the external interface to the semihosting file retrieveal and rely solely on these commands, and staticize them inside that file so the whole business is self-contained. Signed-off-by: Linus Walleij

armv8: semihosting: add a command to load semihosted images

2015-03-28T16:07:45Z

Instead of sprinkling custom code and calls over the Vexpress64 boardfile, create a command that loads images using semihosting just like we would load from flash memory of over the network, using a special command: smhload

This will make it possible to remove some custom calls and code and make the boot easier. Signed-off-by: Linus Walleij

armv8: semihosting: do not inline trap call

2015-03-28T16:07:45Z

The semihosting trap call does not like being inlined, probably because that will mean register reordering screwing up the return value in r0, so tag this function "noinline". Signed-off-by: Linus Walleij

ARMv8: enable pre-allocation malloc

2015-03-27T15:28:58Z

Allocate memory space for pre-allocation malloc and zero global data. This code is partly from crt0.S. Signed-off-by: David Feng

Merge branch 'master' of git://git.denx.de/u-boot-tegra

2015-03-10T23:09:18Z

Conflicts: README Signed-off-by: Tom Rini

ARM: PSCI: Rework the DT handler slightly

2015-03-09T15:13:29Z

The way the PSCI DT update happens currently means we pull in everywhere, including on ARMv8 and that in turn brings in for some non-PSCI related things that header needs to deal with. To fix this, we rework the hook slightly. A good portion of arch/arm/cpu/armv7/virt-dt.c is common looking and I hope that when PSCI is needed on ARMv8 we can re-use this by and large. So rename the current hook to psci_update_dt(), move the prototype to and add an #ifdef that will make re-use later easier. Reported-by: York Sun Cc: Marc Zyngier Cc: York Sun Cc: Ian Campbell Cc: Hans de Goede Cc: Albert ARIBAUD Signed-off-by: Tom Rini Acked-by: York Sun

arm: relocation: clear .bss section with arch memset if defined

2015-03-09T15:13:28Z

For ARM architecture, enable the CONFIG_USE_ARCH_MEMSET/MEMCPY, will highly increase the memset/memcpy performance. This is able thanks to the ARM multiple register instructions. Unfortunatelly the relocation is done without the cache enabled, so it takes some time, but zeroing the BSS memory takes much more longer, especially for the configs with big static buffers. A quick test confirms, that the boot time improvement after using the arch memcpy for relocation has no significant meaning. The same test confirms that enable the memset for zeroing BSS, reduces the boot time. So this patch enables the arch memset for zeroing the BSS after the relocation process. For ARM boards, this can be enabled in board configs by defining: 'CONFIG_USE_ARCH_MEMSET'. This was tested on Trats2. A quick test with trace. Boot time from start to main_loop() entry: - ~1384ms - before this change - ~888ms - after this change Signed-off-by: Przemyslaw Marczak Reviewed-by: Simon Glass Cc: Albert Aribaud Cc: Tom Rini

arm: spl: Allow board_init_r() to run with a larger stack

2015-03-04T19:55:04Z

At present SPL uses a single stack, either CONFIG_SPL_STACK or CONFIG_SYS_INIT_SP_ADDR. Since some SPL features (such as MMC and environment) require a lot of stack, some boards set CONFIG_SPL_STACK to point into SDRAM. They then set up SDRAM very early, before board_init_f(), so that the larger stack can be used. This is an abuse of lowlevel_init(). That function should only be used for essential start-up code which cannot be delayed. An example of a valid use is when only part of the SPL code is visible/executable, and the SoC must be set up so that board_init_f() can be reached. It should not be used for SDRAM init, console init, etc. Add a CONFIG_SPL_STACK_R option, which allows the stack to be moved to a new address before board_init_r() is called in SPL. The expected SPL flow (for CONFIG_SPL_FRAMEWORK) is documented in the README. Signed-off-by: Simon Glass For version 1: Acked-by: Albert ARIBAUD Reviewed-by: Stefan Roese Tested-by: Bo Shen Acked-by: Bo Shen Acked-by: Heiko Schocher Tested-by: Heiko Schocher Signed-off-by: Tom Rini

arm: spl: Avoid setting up a duplicate global data structure

2015-03-04T19:55:04Z

This is already set up in crt0.S. We don't need a new structure and don't really want one in the 'data' section of the image, since it will be empty and crt0.S's changes will be ignored. As an interim measure, remove it only if CONFIG_DM is not defined. This allows us to press ahead with driver model in SPL and allow the stragglers to catch up. Signed-off-by: Simon Glass