u-boot.git/arch/mips/cpu, branch v2020.10

mips: Add CONFIG_MIPS_MACH_EARLY_INIT for very early mach init code

2020-07-18T12:23:25+00:00

This patch adds the optional call to mips_mach_early_init() to start.S
at a very early stage. Its disabled per default. It can be used for
very early machine / platform specific init code.  Its called very
early and at this stage the PC is allowed to differ from the linking
address (CONFIG_TEXT_BASE) as no absolute jump has been performed until
this call.

It will be used by thje Octeon platform.

Signed-off-by: Stefan Roese 
Reviewed-by: Daniel Schwierzeck

mips: sync asm/mipsregs.h with Linux 5.7

2020-07-18T12:23:25+00:00

Sync asm/mipsregs.h with Linux 5.7. Also replace the custom
symbols EBASE_CPUNUM and EBASE_WG with the according symbols
from Linux.

Signed-off-by: Daniel Schwierzeck 
Reviewed-by: Stefan Roese 
Tested-by: Stefan Roese

mips: add config options for generic cache setup code

2020-07-18T12:23:25+00:00

Add an own Kconfig symbol for the initial disabling of caches
invoked from generic start code.

Also add an own Kconfig symbols for the initialization of caches
invoked from generic start code.

Until now both code paths could only be disabled with
CONFIG_SKIP_LOWLEVEL_INIT. But this is not flexible enough for
RAM boot scenarios like EJTAG or SPL payload or for machines
which don't require cache initialization or which want to
provide their own cache implementation.

Signed-off-by: Daniel Schwierzeck 
Reviewed-by: Stefan Roese 
Tested-by: Stefan Roese

mips: refactor disabling of caches

2020-07-18T12:23:25+00:00

Logically this code belongs to cache_init.S.

If a complex SoC needs to replace the generic cache init,
mips_cache_disable() can now be called from custom start.S files.

Signed-off-by: Daniel Schwierzeck 
Reviewed-by: Stefan Roese 
Tested-by: Stefan Roese

mips: start.S: remove dead code

2020-07-18T12:23:25+00:00

Since commit 703ec9ddf965 ("MIPS: Stop building position independent code")
the relocation code was completely reworked and removed from start.S.
Remove some left-overs of the old code.

Signed-off-by: Daniel Schwierzeck 
Reviewed-by: Stefan Roese 
Tested-by: Stefan Roese

mips: time: Only compile the weak get_tbclk() when needed

2020-07-18T12:23:24+00:00

This patch opts-out the compilation of get_tbclk() if
CONFIG_SYS_MIPS_TIMER_FREQ is not defined. This is used on the Octeon
platform, where the weak get_tbclk() function is overwritten by its
platform specific one.

Signed-off-by: Stefan Roese

command: Remove the cmd_tbl_t typedef

2020-05-18T22:36:55+00:00

We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.

Signed-off-by: Simon Glass

common: Drop init.h from common header

2020-05-18T21:33:33+00:00

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass

mips: add a option to support not reserving malloc space on initial stack

2020-04-27T18:29:33+00:00

The initial stack on some platforms is too small to hold a large malloc
space. This patch adds a option to allow these platforms not reserving the
malloc space on initial stack. These platforms should set the malloc base
after DRAM is usable.

Reviewed-by: Stefan Roese 
Signed-off-by: Weijie Gao

mips: add an option to support initialize SRAM for initial stack

2020-04-27T18:29:33+00:00

Currently CONFIG_MIPS_INIT_STACK_IN_SRAM assumes the memory space for the
initial stack can be used directly. However on some platform the SRAM needs
initialization, e.g. lock cache.

This patch adds an option to allow a new function mips_sram_init() being
called before setup_stack_gd.

Reviewed-by: Daniel Schwierzeck 
Reviewed-by: Stefan Roese 
Signed-off-by: Weijie Gao