#include <asm/setup.h>
#include <asm/sections.h>
#include <asm/kdebug.h>
+#include <asm/trampoline.h>
struct e820map e820;
unsigned long end_pfn;
/*
- * end_pfn only includes RAM, while end_pfn_map includes all e820 entries.
- * The direct mapping extends to end_pfn_map, so that we can directly access
+ * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
+ * The direct mapping extends to max_pfn_mapped, so that we can directly access
* apertures, ACPI and other tables without having to play with fixmaps.
*/
-unsigned long end_pfn_map;
+unsigned long max_pfn_mapped;
/*
* Last pfn which the user wants to use.
};
static struct early_res early_res[MAX_EARLY_RES] __initdata = {
{ 0, PAGE_SIZE, "BIOS data page" }, /* BIOS data page */
-#ifdef CONFIG_SMP
- { SMP_TRAMPOLINE_BASE, SMP_TRAMPOLINE_BASE + 2*PAGE_SIZE, "SMP_TRAMPOLINE" },
+#ifdef CONFIG_X86_TRAMPOLINE
+ { TRAMPOLINE_BASE, TRAMPOLINE_BASE + 2 * PAGE_SIZE, "TRAMPOLINE" },
#endif
{}
};
}
/* Check for already reserved areas */
-static inline int bad_addr(unsigned long *addrp, unsigned long size)
+static inline int __init
+bad_addr(unsigned long *addrp, unsigned long size, unsigned long align)
{
int i;
unsigned long addr = *addrp, last;
for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) {
struct early_res *r = &early_res[i];
if (last >= r->start && addr < r->end) {
- *addrp = addr = r->end;
+ *addrp = addr = round_up(r->end, align);
changed = 1;
goto again;
}
return changed;
}
+/* Check for already reserved areas */
+static inline int __init
+bad_addr_size(unsigned long *addrp, unsigned long *sizep, unsigned long align)
+{
+ int i;
+ unsigned long addr = *addrp, last;
+ unsigned long size = *sizep;
+ int changed = 0;
+again:
+ last = addr + size;
+ for (i = 0; i < MAX_EARLY_RES && early_res[i].end; i++) {
+ struct early_res *r = &early_res[i];
+ if (last > r->start && addr < r->start) {
+ size = r->start - addr;
+ changed = 1;
+ goto again;
+ }
+ if (last > r->end && addr < r->end) {
+ addr = round_up(r->end, align);
+ size = last - addr;
+ changed = 1;
+ goto again;
+ }
+ if (last <= r->end && addr >= r->start) {
+ (*sizep)++;
+ return 0;
+ }
+ }
+ if (changed) {
+ *addrp = addr;
+ *sizep = size;
+ }
+ return changed;
+}
/*
* This function checks if any part of the range <start,end> is mapped
* with type.
* Find a free area with specified alignment in a specific range.
*/
unsigned long __init find_e820_area(unsigned long start, unsigned long end,
- unsigned size, unsigned long align)
+ unsigned long size, unsigned long align)
{
int i;
- unsigned long mask = ~(align - 1);
for (i = 0; i < e820.nr_map; i++) {
struct e820entry *ei = &e820.map[i];
- unsigned long addr = ei->addr, last;
+ unsigned long addr, last;
+ unsigned long ei_last;
if (ei->type != E820_RAM)
continue;
+ addr = round_up(ei->addr, align);
+ ei_last = ei->addr + ei->size;
if (addr < start)
- addr = start;
- if (addr > ei->addr + ei->size)
+ addr = round_up(start, align);
+ if (addr >= ei_last)
continue;
- while (bad_addr(&addr, size) && addr+size <= ei->addr+ei->size)
+ while (bad_addr(&addr, size, align) && addr+size <= ei_last)
;
- addr = (addr + align - 1) & mask;
last = addr + size;
- if (last > ei->addr + ei->size)
+ if (last > ei_last)
continue;
if (last > end)
continue;
return -1UL;
}
+/*
+ * Find next free range after *start
+ */
+unsigned long __init find_e820_area_size(unsigned long start,
+ unsigned long *sizep,
+ unsigned long align)
+{
+ int i;
+
+ for (i = 0; i < e820.nr_map; i++) {
+ struct e820entry *ei = &e820.map[i];
+ unsigned long addr, last;
+ unsigned long ei_last;
+
+ if (ei->type != E820_RAM)
+ continue;
+ addr = round_up(ei->addr, align);
+ ei_last = ei->addr + ei->size;
+ if (addr < start)
+ addr = round_up(start, align);
+ if (addr >= ei_last)
+ continue;
+ *sizep = ei_last - addr;
+ while (bad_addr_size(&addr, sizep, align) &&
+ addr + *sizep <= ei_last)
+ ;
+ last = addr + *sizep;
+ if (last > ei_last)
+ continue;
+ return addr;
+ }
+ return -1UL;
+
+}
/*
* Find the highest page frame number we have available
*/
end_pfn = find_max_pfn_with_active_regions();
- if (end_pfn > end_pfn_map)
- end_pfn_map = end_pfn;
- if (end_pfn_map > MAXMEM>>PAGE_SHIFT)
- end_pfn_map = MAXMEM>>PAGE_SHIFT;
+ if (end_pfn > max_pfn_mapped)
+ max_pfn_mapped = end_pfn;
+ if (max_pfn_mapped > MAXMEM>>PAGE_SHIFT)
+ max_pfn_mapped = MAXMEM>>PAGE_SHIFT;
if (end_pfn > end_user_pfn)
end_pfn = end_user_pfn;
- if (end_pfn > end_pfn_map)
- end_pfn = end_pfn_map;
+ if (end_pfn > max_pfn_mapped)
+ end_pfn = max_pfn_mapped;
- printk(KERN_INFO "end_pfn_map = %lu\n", end_pfn_map);
+ printk(KERN_INFO "max_pfn_mapped = %lu\n", max_pfn_mapped);
return end_pfn;
}
/*
* Mark e820 reserved areas as busy for the resource manager.
*/
-void __init e820_reserve_resources(struct resource *code_resource,
- struct resource *data_resource, struct resource *bss_resource)
+void __init e820_reserve_resources(void)
{
int i;
+ struct resource *res;
+
+ res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
for (i = 0; i < e820.nr_map; i++) {
- struct resource *res;
- res = alloc_bootmem_low(sizeof(struct resource));
switch (e820.map[i].type) {
case E820_RAM: res->name = "System RAM"; break;
case E820_ACPI: res->name = "ACPI Tables"; break;
res->start = e820.map[i].addr;
res->end = res->start + e820.map[i].size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
- request_resource(&iomem_resource, res);
- if (e820.map[i].type == E820_RAM) {
- /*
- * We don't know which RAM region contains kernel data,
- * so we try it repeatedly and let the resource manager
- * test it.
- */
- request_resource(res, code_resource);
- request_resource(res, data_resource);
- request_resource(res, bss_resource);
-#ifdef CONFIG_KEXEC
- if (crashk_res.start != crashk_res.end)
- request_resource(res, &crashk_res);
-#endif
- }
+ insert_resource(&iomem_resource, res);
+ res++;
}
}
if (*ei_startpfn >= *ei_endpfn)
return 0;
- /* Check if end_pfn_map should be updated */
- if (ei->type != E820_RAM && *ei_endpfn > end_pfn_map)
- end_pfn_map = *ei_endpfn;
+ /* Check if max_pfn_mapped should be updated */
+ if (ei->type != E820_RAM && *ei_endpfn > max_pfn_mapped)
+ max_pfn_mapped = *ei_endpfn;
/* Skip if map is outside the node */
if (ei->type != E820_RAM || *ei_endpfn <= start_pfn ||
return -1;
do {
- unsigned long start = biosmap->addr;
- unsigned long size = biosmap->size;
- unsigned long end = start + size;
- unsigned long type = biosmap->type;
+ u64 start = biosmap->addr;
+ u64 size = biosmap->size;
+ u64 end = start + size;
+ u32 type = biosmap->type;
/* Overflow in 64 bits? Ignore the memory map. */
if (start > end)
saved_max_pfn = e820_end_of_ram();
remove_all_active_ranges();
#endif
- end_pfn_map = 0;
+ max_pfn_mapped = 0;
e820.nr_map = 0;
userdef = 1;
return 0;
git.openpandora.org / pandora-kernel.git / blobdiff