void arch_remove_reservations(struct resource *avail)
{
/* Trim out BIOS areas (low 1MB and high 2MB) and E820 regions */
if (avail->flags & IORESOURCE_MEM) {
if (avail->start < BIOS_END)
avail->start = BIOS_END;
resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END);
remove_e820_regions(avail);
}
}
static void remove_e820_regions(struct resource *avail)
{
int i;
struct e820entry *entry;
for (i = 0; i < e820.nr_map; i++) {
entry = &e820.map[i];
resource_clip(avail, entry->addr,
entry->addr + entry->size - 1);
}
}
static void remove_e820_regions(struct resource *avail)
{
int i;
struct e820_entry *entry;
for (i = 0; i < e820_table->nr_entries; i++) {
entry = &e820_table->entries[i];
resource_clip(avail, entry->addr,
entry->addr + entry->size - 1);
}
}
void arch_remove_reservations(struct resource *avail)
{
/*
* Trim out BIOS area (high 2MB) and E820 regions. We do not remove
* the low 1MB unconditionally, as this area is needed for some ISA
* cards requiring a memory range, e.g. the i82365 PCMCIA controller.
*/
if (avail->flags & IORESOURCE_MEM) {
resource_clip(avail, BIOS_ROM_BASE, BIOS_ROM_END);
remove_e820_regions(avail);
}
}
