diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/spapr.c | 3 | ||||
| -rw-r--r-- | hw/spapr.h | 1 | ||||
| -rw-r--r-- | hw/spapr_hcall.c | 22 |
3 files changed, 21 insertions, 5 deletions
diff --git a/hw/spapr.c b/hw/spapr.c index 9eefef9015..00aed62272 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -336,7 +336,8 @@ static void ppc_spapr_init(ram_addr_t ram_size, } /* allocate RAM */ - ram_offset = qemu_ram_alloc(NULL, "ppc_spapr.ram", ram_size); + spapr->ram_limit = ram_size; + ram_offset = qemu_ram_alloc(NULL, "ppc_spapr.ram", spapr->ram_limit); cpu_register_physical_memory(0, ram_size, ram_offset); /* allocate hash page table. For now we always make this 16mb, diff --git a/hw/spapr.h b/hw/spapr.h index 009c459a14..3d21b7a1cc 100644 --- a/hw/spapr.h +++ b/hw/spapr.h @@ -10,6 +10,7 @@ typedef struct sPAPREnvironment { struct VIOsPAPRBus *vio_bus; struct icp_state *icp; + target_phys_addr_t ram_limit; void *htab; long htab_size; target_phys_addr_t fdt_addr, rtas_addr; diff --git a/hw/spapr_hcall.c b/hw/spapr_hcall.c index f7ead04a96..70f853cb1b 100644 --- a/hw/spapr_hcall.c +++ b/hw/spapr_hcall.c @@ -99,6 +99,8 @@ static target_ulong h_enter(CPUState *env, sPAPREnvironment *spapr, target_ulong pte_index = args[1]; target_ulong pteh = args[2]; target_ulong ptel = args[3]; + target_ulong page_shift = 12; + target_ulong raddr; target_ulong i; uint8_t *hpte; @@ -111,6 +113,7 @@ static target_ulong h_enter(CPUState *env, sPAPREnvironment *spapr, #endif if ((ptel & 0xff000) == 0) { /* 16M page */ + page_shift = 24; /* lowest AVA bit must be 0 for 16M pages */ if (pteh & 0x80) { return H_PARAMETER; @@ -120,12 +123,23 @@ static target_ulong h_enter(CPUState *env, sPAPREnvironment *spapr, } } - /* FIXME: bounds check the pa? */ + raddr = (ptel & HPTE_R_RPN) & ~((1ULL << page_shift) - 1); - /* Check WIMG */ - if ((ptel & HPTE_R_WIMG) != HPTE_R_M) { - return H_PARAMETER; + if (raddr < spapr->ram_limit) { + /* Regular RAM - should have WIMG=0010 */ + if ((ptel & HPTE_R_WIMG) != HPTE_R_M) { + return H_PARAMETER; + } + } else { + /* Looks like an IO address */ + /* FIXME: What WIMG combinations could be sensible for IO? + * For now we allow WIMG=010x, but are there others? */ + /* FIXME: Should we check against registered IO addresses? */ + if ((ptel & (HPTE_R_W | HPTE_R_I | HPTE_R_M)) != HPTE_R_I) { + return H_PARAMETER; + } } + pteh &= ~0x60ULL; if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) { |