diff options
Diffstat (limited to 'qemu/roms/openbios/arch/sparc64/ofmem_sparc64.c')
| -rw-r--r-- | qemu/roms/openbios/arch/sparc64/ofmem_sparc64.c | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/qemu/roms/openbios/arch/sparc64/ofmem_sparc64.c b/qemu/roms/openbios/arch/sparc64/ofmem_sparc64.c deleted file mode 100644 index bdfaf5636..000000000 --- a/qemu/roms/openbios/arch/sparc64/ofmem_sparc64.c +++ /dev/null @@ -1,381 +0,0 @@ -/* - * <ofmem_sparc64.c> - * - * OF Memory manager - * - * Copyright (C) 1999-2004 Samuel Rydh (samuel@ibrium.se) - * Copyright (C) 2004 Stefan Reinauer - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation - * - */ - -#include "config.h" -#include "libopenbios/bindings.h" -#include "libc/string.h" -#include "arch/sparc64/ofmem_sparc64.h" -#include "spitfire.h" - -#define OF_MALLOC_BASE ((char*)OFMEM + ALIGN_SIZE(sizeof(ofmem_t), 8)) - -#define MEMSIZE (128 * 1024) -static union { - char memory[MEMSIZE]; - ofmem_t ofmem; -} s_ofmem_data; - -#define OFMEM (&s_ofmem_data.ofmem) -#define TOP_OF_RAM (s_ofmem_data.memory + MEMSIZE) - -static retain_t s_retained; -translation_t **g_ofmem_translations = &s_ofmem_data.ofmem.trans; - -ucell *va2ttedata = 0; -extern uint64_t qemu_mem_size; - -static inline size_t ALIGN_SIZE(size_t x, size_t a) -{ - return (x + a - 1) & ~(a-1); -} - -static ucell get_heap_top( void ) -{ - return (ucell)TOP_OF_RAM; -} - -ofmem_t* ofmem_arch_get_private(void) -{ - return OFMEM; -} - -void* ofmem_arch_get_malloc_base(void) -{ - return OF_MALLOC_BASE; -} - -ucell ofmem_arch_get_heap_top(void) -{ - return get_heap_top(); -} - -ucell ofmem_arch_get_virt_top(void) -{ - return (ucell)TOP_OF_RAM; -} - -ucell ofmem_arch_get_iomem_base(void) -{ - /* Currently unused */ - return 0; -} - -ucell ofmem_arch_get_iomem_top(void) -{ - /* Currently unused */ - return 0; -} - -retain_t *ofmem_arch_get_retained(void) -{ - return (&s_retained); -} - -int ofmem_arch_get_translation_entry_size(void) -{ - /* Return size of a single MMU package translation property entry in cells */ - return 3; -} - -void ofmem_arch_create_translation_entry(ucell *transentry, translation_t *t) -{ - /* Generate translation property entry for SPARC. While there is no - formal documentation for this, both Linux kernel and OpenSolaris sources - expect a translation property entry to have the following layout: - - virtual address - length - mode (valid TTE for start of translation region) - */ - - transentry[0] = t->virt; - transentry[1] = t->size; - transentry[2] = t->phys | t->mode | SPITFIRE_TTE_VALID; -} - -/* Return the size of a memory available entry given the phandle in cells */ -int ofmem_arch_get_available_entry_size(phandle_t ph) -{ - if (ph == s_phandle_memory) { - return 1 + ofmem_arch_get_physaddr_cellsize(); - } else { - return 1 + 1; - } -} - -/* Generate memory available property entry for Sparc64 */ -void ofmem_arch_create_available_entry(phandle_t ph, ucell *availentry, phys_addr_t start, ucell size) -{ - int i = 0; - - if (ph == s_phandle_memory) { - i += ofmem_arch_encode_physaddr(availentry, start); - } else { - availentry[i++] = start; - } - - availentry[i] = size; -} - -/* Unmap a set of pages */ -void ofmem_arch_unmap_pages(ucell virt, ucell size) -{ - ucell va; - - /* align address to 8k */ - virt &= ~PAGE_MASK_8K; - - /* align size to 8k */ - size = (size + PAGE_MASK_8K) & ~PAGE_MASK_8K; - - for (va = virt; va < virt + size; va += PAGE_SIZE_8K) { - itlb_demap(va); - dtlb_demap(va); - } -} - -/* Map a set of pages */ -void ofmem_arch_map_pages(phys_addr_t phys, ucell virt, ucell size, ucell mode) -{ - unsigned long tte_data, currsize; - - /* Install locked tlb entries now */ - if (mode & SPITFIRE_TTE_LOCKED) { - - /* aligned to 8k page */ - size = (size + PAGE_MASK_8K) & ~PAGE_MASK_8K; - - while (size > 0) { - currsize = size; - if (currsize >= PAGE_SIZE_4M && - (virt & PAGE_MASK_4M) == 0 && - (phys & PAGE_MASK_4M) == 0) { - currsize = PAGE_SIZE_4M; - tte_data = 6ULL << 60; - } else if (currsize >= PAGE_SIZE_512K && - (virt & PAGE_MASK_512K) == 0 && - (phys & PAGE_MASK_512K) == 0) { - currsize = PAGE_SIZE_512K; - tte_data = 4ULL << 60; - } else if (currsize >= PAGE_SIZE_64K && - (virt & PAGE_MASK_64K) == 0 && - (phys & PAGE_MASK_64K) == 0) { - currsize = PAGE_SIZE_64K; - tte_data = 2ULL << 60; - } else { - currsize = PAGE_SIZE_8K; - tte_data = 0; - } - - tte_data |= phys | mode | SPITFIRE_TTE_VALID; - - itlb_load2(virt, tte_data); - dtlb_load2(virt, tte_data); - - size -= currsize; - phys += currsize; - virt += currsize; - } - } -} - -/************************************************************************/ -/* misc */ -/************************************************************************/ - -int ofmem_arch_get_physaddr_cellsize(void) -{ - return 1; -} - -int ofmem_arch_encode_physaddr(ucell *p, phys_addr_t value) -{ - p[0] = value; - return 1; -} - -ucell ofmem_arch_default_translation_mode( phys_addr_t phys ) -{ - /* Writable, cacheable */ - /* Privileged and not locked */ - return SPITFIRE_TTE_CP | SPITFIRE_TTE_CV | SPITFIRE_TTE_WRITABLE | SPITFIRE_TTE_PRIVILEGED; -} - -ucell ofmem_arch_io_translation_mode( phys_addr_t phys ) -{ - /* Writable, privileged and not locked */ - return SPITFIRE_TTE_CV | SPITFIRE_TTE_WRITABLE | SPITFIRE_TTE_PRIVILEGED; -} - -/* Architecture-specific OFMEM helpers */ -unsigned long -find_tte(unsigned long va) -{ - translation_t *t = *g_ofmem_translations; - unsigned long tte_data; - - /* Search the ofmem linked list for this virtual address */ - while (t != NULL) { - /* Find the correct range */ - if (va >= t->virt && va < (t->virt + t->size)) { - - /* valid tte, 8k size */ - tte_data = SPITFIRE_TTE_VALID; - - /* mix in phys address mode */ - tte_data |= t->mode; - - /* mix in page physical address = t->phys + offset */ - tte_data |= t->phys + (va - t->virt); - - /* return tte_data */ - return tte_data; - } - t = t->next; - } - - /* Couldn't find tte */ - return -1; -} - -/* ITLB handlers */ -void -itlb_load2(unsigned long vaddr, unsigned long tte_data) -{ - asm("stxa %0, [%1] %2\n" - "stxa %3, [%%g0] %4\n" - : : "r" (vaddr), "r" (48), "i" (ASI_IMMU), - "r" (tte_data), "i" (ASI_ITLB_DATA_IN)); -} - -void -itlb_load3(unsigned long vaddr, unsigned long tte_data, - unsigned long tte_index) -{ - asm("stxa %0, [%1] %2\n" - "stxa %3, [%4] %5\n" - : : "r" (vaddr), "r" (48), "i" (ASI_IMMU), - "r" (tte_data), "r" (tte_index << 3), "i" (ASI_ITLB_DATA_ACCESS)); -} - -unsigned long -itlb_faultva(void) -{ - unsigned long faultva; - - asm("ldxa [%1] %2, %0\n" - : "=r" (faultva) - : "r" (48), "i" (ASI_IMMU)); - - return faultva; -} - -void -itlb_demap(unsigned long vaddr) -{ - asm("stxa %0, [%0] %1\n" - : : "r" (vaddr), "i" (ASI_IMMU_DEMAP)); -} - -/* DTLB handlers */ -void -dtlb_load2(unsigned long vaddr, unsigned long tte_data) -{ - asm("stxa %0, [%1] %2\n" - "stxa %3, [%%g0] %4\n" - : : "r" (vaddr), "r" (48), "i" (ASI_DMMU), - "r" (tte_data), "i" (ASI_DTLB_DATA_IN)); -} - -void -dtlb_load3(unsigned long vaddr, unsigned long tte_data, - unsigned long tte_index) -{ - asm("stxa %0, [%1] %2\n" - "stxa %3, [%4] %5\n" - : : "r" (vaddr), "r" (48), "i" (ASI_DMMU), - "r" (tte_data), "r" (tte_index << 3), "i" (ASI_DTLB_DATA_ACCESS)); -} - -unsigned long -dtlb_faultva(void) -{ - unsigned long faultva; - - asm("ldxa [%1] %2, %0\n" - : "=r" (faultva) - : "r" (48), "i" (ASI_DMMU)); - - return faultva; -} - -void -dtlb_demap(unsigned long vaddr) -{ - asm("stxa %0, [%0] %1\n" - : : "r" (vaddr), "i" (ASI_DMMU_DEMAP)); -} - -/************************************************************************/ -/* init / cleanup */ -/************************************************************************/ - -static int remap_page_range( phys_addr_t phys, ucell virt, ucell size, ucell mode ) -{ - ofmem_claim_phys(phys, size, 0); - ofmem_claim_virt(virt, size, 0); - ofmem_map_page_range(phys, virt, size, mode); - if (!(mode & SPITFIRE_TTE_LOCKED)) { - OFMEM_TRACE("remap_page_range clearing translation " FMT_ucellx - " -> " FMT_ucellx " " FMT_ucellx " mode " FMT_ucellx "\n", - virt, phys, size, mode ); - ofmem_arch_unmap_pages(virt, size); - } - return 0; -} - -#define RETAIN_MAGIC 0x1100220033004400 - -void ofmem_init( void ) -{ - retain_t *retained = ofmem_arch_get_retained(); - int i; - - memset(&s_ofmem_data, 0, sizeof(s_ofmem_data)); - s_ofmem_data.ofmem.ramsize = qemu_mem_size; - - /* inherit translations set up by entry.S */ - ofmem_walk_boot_map(remap_page_range); - - /* Map the memory */ - ofmem_map_page_range(PAGE_SIZE, PAGE_SIZE, 0x800000, 0x36); - - if (!(retained->magic == RETAIN_MAGIC)) { - OFMEM_TRACE("ofmem_init: no retained magic found, creating\n"); - retained->magic = RETAIN_MAGIC; - retained->numentries = 0; - } else { - OFMEM_TRACE("ofmem_init: retained magic found, total %lld mappings\n", retained->numentries); - - /* Mark physical addresses as used so they are not reallocated */ - for (i = 0; i < retained->numentries; i++) { - ofmem_claim_phys(retained->retain_phys_range[i].start, - retained->retain_phys_range[i].size, 0); - } - - /* Reset retained area for next reset */ - retained->magic = RETAIN_MAGIC; - retained->numentries = 0; - } -} |