Use GS base regsiter to store reference to CPU private data.
Then we can easily refer to private CPU data using the GS segment.
Required for SMP support.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
fix missing reference to comm_region->tsc_khz and
fix 'defined but not used' warnings in arch/x86_64/intel64_rtc.c
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Hide --whole-archive behind Kconfig option for x86.
This option is not needed and breaks ELF modules build.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
on ACRN hypervisor obtaining frequency from CPUID seems to be broken,
so we have to specify this value from Kconfig.
If frequency autodetection is enabled but the returned data are
incorrect - crash early.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
when repeatedly enabling and disabling string-controlled configurations,
the generated toolchain configuration may be incorrect.
Signed-off-by: xuxin19 <xuxin19@xiaomi.com>
acpi_init() must be called early during boot, some system components may be
unavailable at this stage, so debug messages won't work
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
rsdp memory may be not mapped when provided from multiboot2 header.
For some reason the previous code worked on some machines.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
add simple ACPI parser for intel64.
For now RSDP signature can be found in BIOS legacy region or can be provided by multiboot2
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
check if interrupt is busy when IRQCHAIN is disabled
this allows user to catch configuration errors and fail early when the
already busy vector is reused
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
at default x86_64 supports SSE, SSE2, this commit adds support for
SSE3, SSSE3, SSE41, SSE42 and SSE4A
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
this partly revert 4123615621 which works OK for PCI serial and network cards
but breaks QEMU EDU due to usage of sem and usleep in IDLE thread context.
Another solution will be provided later.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
change optimization to -Os for CONFIG_DEBUG_FULLOPT to be compatible with other architectures
and add an option to select CONFIG_DEBUG_CUSTOMOPT
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
enable FPU and implement up_fpucmp to pass ostest
With aggressive optimization enabled (-O2/-O3), ostest FPU test will fail.
This is because the compiler will generate additional vector
instructions between subsequent up_fpucmp() calls (loop vectorization
somewhere in usleep() call), which will consequently overwrite
the expected FPU context (XMM registers).
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
__revoke_low_memory() is called in intel64_lowsetup()
fixes b4b96a6435 (PR #11758) in which the multiboot2 header was accessed
after revoking the low memory which caused page fault.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
BSS nulling can now be optimized by the compiler, so it is necessary
to enable SSE instructions early in __nxstart
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
The stack pointer must be aligned to 16 bytes, otherwise the system crash on the first unaligned data access with vector instruction.
The problem is only observable with optimization enabled, when vector instructions are generated.
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
this is a follow up to the change from 2335b69120 which missed
updating stack frame length for this memset
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
