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Diffstat (limited to 'extras/mini-os/arch/ia64/mm.c')
| -rw-r--r-- | extras/mini-os/arch/ia64/mm.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/extras/mini-os/arch/ia64/mm.c b/extras/mini-os/arch/ia64/mm.c deleted file mode 100644 index 9040517fc2..0000000000 --- a/extras/mini-os/arch/ia64/mm.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - * Done by Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com> - * - * Description: Special ia64 memory management. - * Parts are taken from FreeBSD. - * - **************************************************************************** - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - - -#include <mini-os/os.h> -#include <mini-os/mm.h> - - -#define MAX_MEM_AREA 5 -paddr_t phys_avail[MAX_MEM_AREA * 2]; -int phys_avail_cnt; -uint64_t physmem; - -/* - * These variables are defined in the linker script minios_ia64.lds - * to get the size of the kernel. - */ -extern uint64_t _text[], _etext[], _end[], kstack[], phys_start[]; - -uint64_t kernstart, kernend, kernsize, kernpstart, kernpend; - -#ifdef HAVE_LIBC -uint8_t _heap[512 * 1024]; -unsigned long heap = (unsigned long)_heap, - brk = (unsigned long)_heap, - heap_mapped = (unsigned long)_heap + sizeof(_heap), - heap_end = (unsigned long)_heap + sizeof(_heap); -#endif - -/* Print the available memory chunks. */ -static void -print_phys_avail(void) -{ - int i; - - printk("Physical memory chunk(s):\n"); - for (i = 0; phys_avail[i + 1] != 0; i += 2) { - int size = phys_avail[i + 1] - phys_avail[i]; - printk("0x%08lx - 0x%08lx, %d bytes (%d pages)\n", - phys_avail[i], phys_avail[i + 1] - 1, - size, size / PAGE_SIZE); - } -} - -void -arch_init_mm(unsigned long* start_pfn_p, unsigned long* max_pfn_p) -{ - uint64_t ms, me; - int i, j; - uint64_t m, n; - - kernstart = trunc_page(_text); - kernend = roundup_page(_end); - - kernpstart = trunc_page(ia64_tpa(kernstart)); - kernpend = roundup_page(kernpstart + (kernend - kernstart)); - kernsize = kernpend - kernpstart; - - ms = roundup_page(machineFwG.mach_mem_start); - me = trunc_page(machineFwG.mach_mem_start+machineFwG.mach_mem_size); - memset((void*)phys_avail, 0, sizeof(phys_avail)); - /* 1. Check where the kernel lies in physical memory. */ - physmem = me - ms; - if ((ms <= kernpend) && (kernpstart <= me)) { - if (ms < kernpstart) { /* There is a part before the kernel. */ - PRINT_BV(" Found chunk before kernel: 0x%lx - 0x%lx\n", - ms, kernpstart); - phys_avail[phys_avail_cnt] = ms; - phys_avail[phys_avail_cnt+1] = kernpstart; - phys_avail_cnt += 2; - } - if (kernpend < me) { /* There is a part behind the kernel. */ - PRINT_BV(" Found chunk behind kernel: 0x%lx - 0x%lx\n", - kernpend, me); - phys_avail[phys_avail_cnt] = kernpend; - phys_avail[phys_avail_cnt+1] = me; - phys_avail_cnt += 2; - } - } else { /* One big chunk */ - PRINT_BV(" Found big chunk: 0x%lx - 0x%lx\n", ms, me); - phys_avail[phys_avail_cnt] = ms; - phys_avail[phys_avail_cnt + 1] = me; - phys_avail_cnt += 2; - } - phys_avail[phys_avail_cnt] = 0; - - print_phys_avail(); - /* - * In this first version I only look for the biggest mem area. - */ - for (i = j = m = n = 0; i < phys_avail_cnt; i += 2) { - n = page_to_pfn(phys_avail[i + 1]) - page_to_pfn(phys_avail[i]); - if (n > m) { - m = n; - j = i; - } - } - *start_pfn_p = page_to_pfn(phys_avail[j]); - *max_pfn_p = page_to_pfn(phys_avail[j +1 ]); -} - -/* Currently only a dummy function. */ -void -arch_init_demand_mapping_area(unsigned long max_pfn) -{ - max_pfn = max_pfn; -} - -unsigned long allocate_ondemand(unsigned long n, unsigned long alignment) -{ - return 0; -} - -/* Helper function used in gnttab.c. */ -void do_map_frames(unsigned long addr, - const unsigned long *f, unsigned long n, unsigned long stride, - unsigned long increment, domid_t id, int *err, unsigned long prot) -{ - /* TODO */ - ASSERT(0); -} - -void* -map_frames_ex(const unsigned long* frames, unsigned long n, unsigned long stride, - unsigned long increment, unsigned long alignment, domid_t id, - int *err, unsigned long prot) -{ - /* TODO: incomplete! */ - ASSERT(n == 1 || (stride == 0 && increment == 1)); - ASSERT(id == DOMID_SELF); - ASSERT(prot == 0); - return (void*) __va(frames[0] << PAGE_SHIFT); -} - -int unmap_frames(unsigned long virt_addr, unsigned long num_frames) -{ - /* TODO */ - ASSERT(0); -} - -unsigned long alloc_contig_pages(int order, unsigned int addr_bits) -{ - /* TODO */ - ASSERT(0); -} - -void arch_init_p2m(unsigned long max_pfn) -{ - printk("Warn: p2m map not implemented.\n"); -} |