The Xtensa port was the only one remaining to be converted to the new
way of connecting interrupts in Zephyr. Some things are still
unconverted, mainly the exception table, and this will be performed
another time.
Of note: _irq_priority_set() isn't called on _ARCH_IRQ_CONNECT(), since
IRQs can't change priority on Xtensa: while the architecture has the
concept of interrupt priority levels, each line has a fixed level and
can't be changed.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
The first stage bootloader, part of the ESP32 ROM, already sets up
a stack that's sufficient to execute C programs. So, instead of
implementing __stack() in assembly, do it in C to simplify things
slightly.
This ESP32-specific initialization will perform the following:
- Disable the watchdog timer that's enabled by the bootloader
- Move exception handlers to IRAM
- Disable normal interrupts
- Disable the second CPU
- Zero out the BSS segment
Things that might be performed in the future include setting up the
CPU frequency, memory protection regions, and enabling the flash
cache.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
We had two assembly files to prepare for entry into C domain,
one intended for the simulator and one intended for real boards.
- Both files merged into a single crt1.S for either simulated or real
targets
- Extra logic to populate command line arguments from simulator removed,
we don't use it.
- BSS zeroing logic from crt1-boards.S used
- Reference to missing reset-unneeded.S removed
- exit() implementation moved to fatal.c, now invokes a kernel panic
if we are not running under the simulator
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
gcc only understands -mlongcalls form of this option, xcc understands
both. Use -mlongcalls for building with both xcc and gcc.
Change-Id: I93f65ccbc97429ae564f1986120b37ce205ee38c
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
These libraries are unlikely to be uesd by GCC port and thus should not be in
a generic make file. Moved to specific toolchain make file.
Change-Id: Ib585b87700e409d678f7a5cb60cff67b6022ab05
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>
Added arch sub folder, make files and Kconfig files for a set of standard SoCs.
Change-Id: I4ee9cba966860072e55c95795d87356b665e4d49
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>
Anas Nashif