On the real hardware, RTAS is called in real mode and therefore top 4 bits of the address passed in the call are ignored. So does the patch.
This converts h_rtas() to use existing rtas_ld() handlers. This fixed rtas_ld()/rtas_st() to ignore top 4 bits. Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> --- Changes: v3: * ldl_be_phys() replaced with rtas_ld() which is already there * rtas_ld()/rtas_st() fixed to chop top 4 bits v2: * masking from replaced with the use of cpu_ldl_data which can handle realmode case properly --- hw/ppc/spapr_hcall.c | 6 +++--- include/hw/ppc/spapr.h | 9 +++++++-- 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c index b3bc2ea..7f07409 100644 --- a/hw/ppc/spapr_hcall.c +++ b/hw/ppc/spapr_hcall.c @@ -523,9 +523,9 @@ static target_ulong h_rtas(PowerPCCPU *cpu, sPAPREnvironment *spapr, target_ulong opcode, target_ulong *args) { target_ulong rtas_r3 = args[0]; - uint32_t token = ldl_be_phys(rtas_r3); - uint32_t nargs = ldl_be_phys(rtas_r3 + 4); - uint32_t nret = ldl_be_phys(rtas_r3 + 8); + uint32_t token = rtas_ld(rtas_r3, 0); + uint32_t nargs = rtas_ld(rtas_r3, 1); + uint32_t nret = rtas_ld(rtas_r3, 2); return spapr_rtas_call(cpu, spapr, token, nargs, rtas_r3 + 12, nret, rtas_r3 + 12 + 4*nargs); diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 8c1d4a2..3731262 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -340,14 +340,19 @@ static inline int spapr_allocate_lsi(int hint) return spapr_allocate_irq(hint, true); } +static inline uint64_t ppc64_phys_to_real(uint64_t addr) +{ + return addr & ~0xF000000000000000ULL; +} + static inline uint32_t rtas_ld(target_ulong phys, int n) { - return ldl_be_phys(phys + 4*n); + return ldl_be_phys(ppc64_phys_to_real(phys + 4*n)); } static inline void rtas_st(target_ulong phys, int n, uint32_t val) { - stl_be_phys(phys + 4*n, val); + stl_be_phys(ppc64_phys_to_real(phys + 4*n), val); } typedef void (*spapr_rtas_fn)(PowerPCCPU *cpu, sPAPREnvironment *spapr, -- 1.8.4.rc4