Author: nwhitehorn Date: Sat Mar 3 02:06:48 2018 New Revision: 330306 URL: https://svnweb.freebsd.org/changeset/base/330306
Log: Honor physical memory regions marked unavailable in the FDT, when present. The most notable of these is the FDT itself, which it is a bad idea to overwrite. Modified: head/sys/powerpc/ps3/platform_ps3.c Modified: head/sys/powerpc/ps3/platform_ps3.c ============================================================================== --- head/sys/powerpc/ps3/platform_ps3.c Sat Mar 3 02:04:40 2018 (r330305) +++ head/sys/powerpc/ps3/platform_ps3.c Sat Mar 3 02:06:48 2018 (r330306) @@ -141,37 +141,38 @@ void ps3_mem_regions(platform_t plat, struct mem_region *phys, int *physsz, struct mem_region *avail_regions, int *availsz) { - uint64_t lpar_id, junk, ppe_id; + uint64_t lpar_id, junk; + int i; - /* Get real mode memory region */ - avail_regions[0].mr_start = 0; - lv1_get_logical_partition_id(&lpar_id); - lv1_get_logical_ppe_id(&ppe_id); - lv1_get_repository_node_value(lpar_id, - lv1_repository_string("bi") >> 32, lv1_repository_string("pu"), - ppe_id, lv1_repository_string("rm_size"), - &avail_regions[0].mr_size, &junk); + /* Prefer device tree information if available */ + if (OF_finddevice("/") != -1) { + ofw_mem_regions(phys, physsz, avail_regions, availsz); + } else { + /* Real mode memory region is first segment */ + phys[0].mr_start = 0; + phys[0].mr_size = ps3_real_maxaddr(plat); + *physsz = *availsz = 1; + avail_regions[0] = phys[0]; + } /* Now get extended memory region */ + lv1_get_logical_partition_id(&lpar_id); lv1_get_repository_node_value(lpar_id, lv1_repository_string("bi") >> 32, lv1_repository_string("rgntotal"), 0, 0, - &avail_regions[1].mr_size, &junk); + &phys[*physsz].mr_size, &junk); + for (i = 0; i < *physsz; i++) + phys[*physsz].mr_size -= phys[i].mr_size; /* Convert to maximum amount we can allocate in 16 MB pages */ - avail_regions[1].mr_size -= avail_regions[0].mr_size; - avail_regions[1].mr_size -= avail_regions[1].mr_size % (16*1024*1024); + phys[*physsz].mr_size -= phys[*physsz].mr_size % (16*1024*1024); /* Allocate extended memory region */ - lv1_allocate_memory(avail_regions[1].mr_size, 24 /* 16 MB pages */, - 0, 0x04 /* any address */, &avail_regions[1].mr_start, &junk); - - *availsz = 2; - - if (phys != NULL) { - memcpy(phys, avail_regions, sizeof(*phys)*2); - *physsz = 2; - } + lv1_allocate_memory(phys[*physsz].mr_size, 24 /* 16 MB pages */, + 0, 0x04 /* any address */, &phys[*physsz].mr_start, &junk); + avail_regions[*availsz] = phys[*physsz]; + (*physsz)++; + (*availsz)++; } static u_long @@ -260,12 +261,22 @@ ps3_reset(platform_t plat) static vm_offset_t ps3_real_maxaddr(platform_t plat) { - struct mem_region *phys, *avail; - int nphys, navail; + uint64_t lpar_id, junk, ppe_id; + static uint64_t rm_maxaddr = 0; - mem_regions(&phys, &nphys, &avail, &navail); + if (rm_maxaddr == 0) { + /* Get real mode memory region */ + lv1_get_logical_partition_id(&lpar_id); + lv1_get_logical_ppe_id(&ppe_id); - return (phys[0].mr_start + phys[0].mr_size); + lv1_get_repository_node_value(lpar_id, + lv1_repository_string("bi") >> 32, + lv1_repository_string("pu"), + ppe_id, lv1_repository_string("rm_size"), + &rm_maxaddr, &junk); + } + + return (rm_maxaddr); } static void _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"