[kvm-unit-tests v2 09/10] powerpc: Support powernv machine with QEMU TCG

[Thomas Huth]

On 20/03/2023 08.03, Nicholas Piggin wrote:
> This is a basic first pass at powernv support using OPAL (skiboot)
> firmware.
> 
> The ACCEL is a bit clunky, now defaulting to tcg for powernv machine.
> It also does not yet run in the run_tests.sh batch process, more work
> is needed to exclude certain tests (e.g., rtas) and adjust parameters
> (e.g., increase memory size) to allow powernv to work. For now it
> can run single test cases.
> 
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
> ---
>   lib/powerpc/asm/ppc_asm.h   |  5 +++
>   lib/powerpc/asm/processor.h | 14 ++++++++
>   lib/powerpc/hcall.c         |  4 +--
>   lib/powerpc/io.c            | 33 ++++++++++++++++--
>   lib/powerpc/io.h            |  6 ++++
>   lib/powerpc/processor.c     | 10 ++++++
>   lib/powerpc/setup.c         | 10 ++++--
>   lib/ppc64/asm/opal.h        | 11 ++++++
>   lib/ppc64/opal-calls.S      | 46 +++++++++++++++++++++++++
>   lib/ppc64/opal.c            | 67 +++++++++++++++++++++++++++++++++++++
>   powerpc/Makefile.ppc64      |  2 ++
>   powerpc/cstart64.S          |  7 ++++
>   powerpc/run                 | 30 ++++++++++++++---
>   13 files changed, 234 insertions(+), 11 deletions(-)
>   create mode 100644 lib/ppc64/asm/opal.h
>   create mode 100644 lib/ppc64/opal-calls.S
>   create mode 100644 lib/ppc64/opal.c
> 
> diff --git a/lib/powerpc/asm/ppc_asm.h b/lib/powerpc/asm/ppc_asm.h
> index 6299ff5..5eec9d3 100644
> --- a/lib/powerpc/asm/ppc_asm.h
> +++ b/lib/powerpc/asm/ppc_asm.h
> @@ -36,7 +36,12 @@
>   #endif /* __BYTE_ORDER__ */
>   
>   /* Machine State Register definitions: */
> +#define MSR_LE_BIT	0
>   #define MSR_EE_BIT	15			/* External Interrupts Enable */
> +#define MSR_HV_BIT	60			/* Hypervisor mode */
>   #define MSR_SF_BIT	63			/* 64-bit mode */
>   
> +#define SPR_HSRR0	0x13A
> +#define SPR_HSRR1	0x13B
> +
>   #endif /* _ASMPOWERPC_PPC_ASM_H */
> diff --git a/lib/powerpc/asm/processor.h b/lib/powerpc/asm/processor.h
> index ebfeff2..8084787 100644
> --- a/lib/powerpc/asm/processor.h
> +++ b/lib/powerpc/asm/processor.h
> @@ -3,12 +3,26 @@
>   
>   #include <libcflat.h>
>   #include <asm/ptrace.h>
> +#include <asm/ppc_asm.h>
>   
>   #ifndef __ASSEMBLY__
>   void handle_exception(int trap, void (*func)(struct pt_regs *, void *), void *);
>   void do_handle_exception(struct pt_regs *regs);
>   #endif /* __ASSEMBLY__ */
>   
> +/*
> + * If this returns true on PowerNV / OPAL machines which run in hypervisor
> + * mode. False on pseries / PAPR machines that run in guest mode.

s/If this/This/

  Thomas