diff options
Diffstat (limited to 'i386/i386at/biosmem.h')
| -rw-r--r-- | i386/i386at/biosmem.h | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/i386/i386at/biosmem.h b/i386/i386at/biosmem.h index 1db63f9f..f48cfc30 100644 --- a/i386/i386at/biosmem.h +++ b/i386/i386at/biosmem.h @@ -56,20 +56,21 @@ void biosmem_bootstrap(struct multiboot_raw_info *mbi); /* * Allocate contiguous physical pages during bootstrap. * - * This function is called before paging is enabled. It should only be used - * to allocate initial page table pages. Those pages are later loaded into - * the VM system (as reserved pages) which means they can be freed like other - * regular pages. Users should fix up the type of those pages once the VM - * system is initialized. + * This function is called before paging is enabled. The pages returned + * are guaranteed to be part of the direct physical mapping when paging + * is enabled. + * + * This function should only be used to allocate initial page table pages. + * Those pages are later loaded into the VM system (as reserved pages) + * which means they can be freed like other regular pages. Users should + * fix up the type of those pages once the VM system is initialized. */ unsigned long biosmem_bootalloc(unsigned int nr_pages); /* - * Return the amount of physical memory that can be directly mapped. - * - * This includes the size of both the DMA/DMA32 and DIRECTMAP segments. + * Return the limit of physical memory that can be directly mapped. */ -phys_addr_t biosmem_directmap_size(void); +phys_addr_t biosmem_directmap_end(void); /* * Set up physical memory based on the information obtained during bootstrap @@ -79,10 +80,9 @@ void biosmem_setup(void); /* * Free all usable memory. - * - * This includes ranges that weren't part of the bootstrap allocator initial - * heap, e.g. because they contained boot data. */ -void biosmem_free_usable(void); +#ifndef MACH_HYP +void biosmem_free_usable(struct multiboot_raw_info *mbi); +#endif /* MACH_HYP */ #endif /* _X86_BIOSMEM_H */ |