diff options
Diffstat (limited to 'hw/misc/mips_itu.c')
| -rw-r--r-- | hw/misc/mips_itu.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/hw/misc/mips_itu.c b/hw/misc/mips_itu.c index 4801958..ee1addc 100644 --- a/hw/misc/mips_itu.c +++ b/hw/misc/mips_itu.c @@ -84,7 +84,7 @@ static uint64_t itc_tag_read(void *opaque, hwaddr addr, unsigned size) return tag->ITCAddressMap[index]; } -static void itc_reconfigure(MIPSITUState *tag) +void itc_reconfigure(MIPSITUState *tag) { uint64_t *am = &tag->ITCAddressMap[0]; MemoryRegion *mr = &tag->storage_io; @@ -92,6 +92,12 @@ static void itc_reconfigure(MIPSITUState *tag) uint64_t size = (1 * KiB) + (am[1] & ITC_AM1_ADDR_MASK_MASK); bool is_enabled = (am[0] & ITC_AM0_EN_MASK) != 0; + if (tag->saar_present) { + address = ((*(uint64_t *) tag->saar) & 0xFFFFFFFFE000ULL) << 4; + size = 1 << ((*(uint64_t *) tag->saar >> 1) & 0x1f); + is_enabled = *(uint64_t *) tag->saar & 1; + } + memory_region_transaction_begin(); if (!(size & (size - 1))) { memory_region_set_size(mr, size); @@ -150,7 +156,12 @@ static inline ITCView get_itc_view(hwaddr addr) static inline int get_cell_stride_shift(const MIPSITUState *s) { /* Minimum interval (for EntryGain = 0) is 128 B */ - return 7 + (s->ITCAddressMap[1] & ITC_AM1_ENTRY_GRAIN_MASK); + if (s->saar_present) { + return 7 + ((s->icr0 >> ITC_ICR0_BLK_GRAIN) & + ITC_ICR0_BLK_GRAIN_MASK); + } else { + return 7 + (s->ITCAddressMap[1] & ITC_AM1_ENTRY_GRAIN_MASK); + } } static inline ITCStorageCell *get_cell(MIPSITUState *s, @@ -499,10 +510,15 @@ static void mips_itu_reset(DeviceState *dev) { MIPSITUState *s = MIPS_ITU(dev); - s->ITCAddressMap[0] = 0; - s->ITCAddressMap[1] = - ((ITC_STORAGE_ADDRSPACE_SZ - 1) & ITC_AM1_ADDR_MASK_MASK) | - (get_num_cells(s) << ITC_AM1_NUMENTRIES_OFS); + if (s->saar_present) { + *(uint64_t *) s->saar = 0x11 << 1; + s->icr0 = get_num_cells(s) << ITC_ICR0_CELL_NUM; + } else { + s->ITCAddressMap[0] = 0; + s->ITCAddressMap[1] = + ((ITC_STORAGE_ADDRSPACE_SZ - 1) & ITC_AM1_ADDR_MASK_MASK) | + (get_num_cells(s) << ITC_AM1_NUMENTRIES_OFS); + } itc_reconfigure(s); itc_reset_cells(s); @@ -513,6 +529,7 @@ static Property mips_itu_properties[] = { ITC_FIFO_NUM_MAX), DEFINE_PROP_INT32("num-semaphores", MIPSITUState, num_semaphores, ITC_SEMAPH_NUM_MAX), + DEFINE_PROP_BOOL("saar-present", MIPSITUState, saar_present, false), DEFINE_PROP_END_OF_LIST(), }; |