diff options
Diffstat (limited to 'sys/arm64/arm64/pmap.c')
| -rw-r--r-- | sys/arm64/arm64/pmap.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/sys/arm64/arm64/pmap.c b/sys/arm64/arm64/pmap.c index f8a7fdd..2cf3c33 100644 --- a/sys/arm64/arm64/pmap.c +++ b/sys/arm64/arm64/pmap.c @@ -221,6 +221,8 @@ struct msgbuf *msgbufp = NULL; static struct rwlock_padalign pvh_global_lock; vm_paddr_t dmap_phys_base; /* The start of the dmap region */ +vm_paddr_t dmap_phys_max; /* The limit of the dmap region */ +vm_offset_t dmap_max_addr; /* The virtual address limit of the dmap */ /* This code assumes all L1 DMAP entries will be used */ CTASSERT((DMAP_MIN_ADDRESS & ~L0_OFFSET) == DMAP_MIN_ADDRESS); @@ -550,15 +552,15 @@ pmap_early_vtophys(vm_offset_t l1pt, vm_offset_t va) } static void -pmap_bootstrap_dmap(vm_offset_t kern_l1, vm_paddr_t kernstart) +pmap_bootstrap_dmap(vm_offset_t kern_l1, vm_paddr_t min_pa, vm_paddr_t max_pa) { vm_offset_t va; vm_paddr_t pa; u_int l1_slot; - pa = dmap_phys_base = kernstart & ~L1_OFFSET; + pa = dmap_phys_base = min_pa & ~L1_OFFSET; va = DMAP_MIN_ADDRESS; - for (; va < DMAP_MAX_ADDRESS; + for (; va < DMAP_MAX_ADDRESS && pa < max_pa; pa += L1_SIZE, va += L1_SIZE, l1_slot++) { l1_slot = ((va - DMAP_MIN_ADDRESS) >> L1_SHIFT); @@ -567,6 +569,10 @@ pmap_bootstrap_dmap(vm_offset_t kern_l1, vm_paddr_t kernstart) ATTR_IDX(CACHED_MEMORY) | L1_BLOCK); } + /* Set the upper limit of the DMAP region */ + dmap_phys_max = pa; + dmap_max_addr = va; + cpu_dcache_wb_range((vm_offset_t)pagetable_dmap, PAGE_SIZE * DMAP_TABLES); cpu_tlb_flushID(); @@ -651,7 +657,7 @@ pmap_bootstrap(vm_offset_t l0pt, vm_offset_t l1pt, vm_paddr_t kernstart, pt_entry_t *l2; vm_offset_t va, freemempos; vm_offset_t dpcpu, msgbufpv; - vm_paddr_t pa, min_pa; + vm_paddr_t pa, max_pa, min_pa; int i; kern_delta = KERNBASE - kernstart; @@ -671,7 +677,7 @@ pmap_bootstrap(vm_offset_t l0pt, vm_offset_t l1pt, vm_paddr_t kernstart, rw_init(&pvh_global_lock, "pmap pv global"); /* Assume the address we were loaded to is a valid physical address */ - min_pa = KERNBASE - kern_delta; + min_pa = max_pa = KERNBASE - kern_delta; /* * Find the minimum physical address. physmap is sorted, @@ -682,11 +688,12 @@ pmap_bootstrap(vm_offset_t l0pt, vm_offset_t l1pt, vm_paddr_t kernstart, continue; if (physmap[i] <= min_pa) min_pa = physmap[i]; - break; + if (physmap[i + 1] > max_pa) + max_pa = physmap[i + 1]; } /* Create a direct map region early so we can use it for pa -> va */ - pmap_bootstrap_dmap(l1pt, min_pa); + pmap_bootstrap_dmap(l1pt, min_pa, max_pa); va = KERNBASE; pa = KERNBASE - kern_delta; |
