diff options
Diffstat (limited to 'i386/i386at/biosmem.c')
| -rw-r--r-- | i386/i386at/biosmem.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/i386/i386at/biosmem.c b/i386/i386at/biosmem.c index 880989fe..6d0a03ae 100644 --- a/i386/i386at/biosmem.c +++ b/i386/i386at/biosmem.c @@ -692,7 +692,9 @@ biosmem_bootstrap_common(void) biosmem_set_segment(VM_PAGE_SEG_DMA, phys_start, phys_end); phys_start = VM_PAGE_DMA_LIMIT; + #ifdef VM_PAGE_DMA32_LIMIT +#if VM_PAGE_DMA32_LIMIT < VM_PAGE_DIRECTMAP_LIMIT phys_end = VM_PAGE_DMA32_LIMIT; error = biosmem_map_find_avail(&phys_start, &phys_end); @@ -702,7 +704,9 @@ biosmem_bootstrap_common(void) biosmem_set_segment(VM_PAGE_SEG_DMA32, phys_start, phys_end); phys_start = VM_PAGE_DMA32_LIMIT; +#endif #endif /* VM_PAGE_DMA32_LIMIT */ + phys_end = VM_PAGE_DIRECTMAP_LIMIT; error = biosmem_map_find_avail(&phys_start, &phys_end); @@ -712,6 +716,21 @@ biosmem_bootstrap_common(void) biosmem_set_segment(VM_PAGE_SEG_DIRECTMAP, phys_start, phys_end); phys_start = VM_PAGE_DIRECTMAP_LIMIT; + +#ifdef VM_PAGE_DMA32_LIMIT +#if VM_PAGE_DMA32_LIMIT > VM_PAGE_DIRECTMAP_LIMIT + phys_end = VM_PAGE_DMA32_LIMIT; + error = biosmem_map_find_avail(&phys_start, &phys_end); + + if (error) + return; + + biosmem_set_segment(VM_PAGE_SEG_DMA32, phys_start, phys_end); + + phys_start = VM_PAGE_DMA32_LIMIT; +#endif +#endif /* VM_PAGE_DMA32_LIMIT */ + phys_end = VM_PAGE_HIGHMEM_LIMIT; error = biosmem_map_find_avail(&phys_start, &phys_end); |