* Skip non-WB memory and ignore empty memory ranges.
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
static DEFINE_SPINLOCK(efi_rt_lock);
static pgd_t efi_bak_pg_dir_pointer[2];
-static void efi_call_phys_prelog(void)
+static void efi_call_phys_prelog(void) __acquires(efi_rt_lock)
{
unsigned long cr4;
unsigned long temp;
load_gdt(cpu_gdt_descr);
}
-static void efi_call_phys_epilog(void)
+static void efi_call_phys_epilog(void) __releases(efi_rt_lock)
{
unsigned long cr4;
struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0);
return 0;
}
/*
- * This should only be used during kernel init and before runtime
- * services have been remapped, therefore, we'll need to call in physical
- * mode. Note, this call isn't used later, so mark it __init.
+ * This is used during kernel init before runtime
+ * services have been remapped and also during suspend, therefore,
+ * we'll need to call both in physical and virtual modes.
*/
-inline unsigned long __init efi_get_time(void)
+inline unsigned long efi_get_time(void)
{
efi_status_t status;
efi_time_t eft;
efi_time_cap_t cap;
- status = phys_efi_get_time(&eft, &cap);
+ if (efi.get_time) {
+ /* if we are in virtual mode use remapped function */
+ status = efi.get_time(&eft, &cap);
+ } else {
+ /* we are in physical mode */
+ status = phys_efi_get_time(&eft, &cap);
+ }
+
if (status != EFI_SUCCESS)
printk("Oops: efitime: can't read time status: 0x%lx\n",status);
}
}
+/*
+ * Wrap all the virtual calls in a way that forces the parameters on the stack.
+ */
+
+#define efi_call_virt(f, args...) \
+ ((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args)
+
+static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
+{
+ return efi_call_virt(get_time, tm, tc);
+}
+
+static efi_status_t virt_efi_set_time (efi_time_t *tm)
+{
+ return efi_call_virt(set_time, tm);
+}
+
+static efi_status_t virt_efi_get_wakeup_time (efi_bool_t *enabled,
+ efi_bool_t *pending,
+ efi_time_t *tm)
+{
+ return efi_call_virt(get_wakeup_time, enabled, pending, tm);
+}
+
+static efi_status_t virt_efi_set_wakeup_time (efi_bool_t enabled,
+ efi_time_t *tm)
+{
+ return efi_call_virt(set_wakeup_time, enabled, tm);
+}
+
+static efi_status_t virt_efi_get_variable (efi_char16_t *name,
+ efi_guid_t *vendor, u32 *attr,
+ unsigned long *data_size, void *data)
+{
+ return efi_call_virt(get_variable, name, vendor, attr, data_size, data);
+}
+
+static efi_status_t virt_efi_get_next_variable (unsigned long *name_size,
+ efi_char16_t *name,
+ efi_guid_t *vendor)
+{
+ return efi_call_virt(get_next_variable, name_size, name, vendor);
+}
+
+static efi_status_t virt_efi_set_variable (efi_char16_t *name,
+ efi_guid_t *vendor,
+ unsigned long attr,
+ unsigned long data_size, void *data)
+{
+ return efi_call_virt(set_variable, name, vendor, attr, data_size, data);
+}
+
+static efi_status_t virt_efi_get_next_high_mono_count (u32 *count)
+{
+ return efi_call_virt(get_next_high_mono_count, count);
+}
+
+static void virt_efi_reset_system (int reset_type, efi_status_t status,
+ unsigned long data_size,
+ efi_char16_t *data)
+{
+ efi_call_virt(reset_system, reset_type, status, data_size, data);
+}
+
/*
* This function will switch the EFI runtime services to virtual mode.
* Essentially, look through the EFI memmap and map every region that
check_range_for_systab(md);
}
- if (!efi.systab)
- BUG();
+ BUG_ON(!efi.systab);
status = phys_efi_set_virtual_address_map(
memmap.desc_size * memmap.nr_map,
* pointers in the runtime service table to the new virtual addresses.
*/
- efi.get_time = (efi_get_time_t *) efi.systab->runtime->get_time;
- efi.set_time = (efi_set_time_t *) efi.systab->runtime->set_time;
- efi.get_wakeup_time = (efi_get_wakeup_time_t *)
- efi.systab->runtime->get_wakeup_time;
- efi.set_wakeup_time = (efi_set_wakeup_time_t *)
- efi.systab->runtime->set_wakeup_time;
- efi.get_variable = (efi_get_variable_t *)
- efi.systab->runtime->get_variable;
- efi.get_next_variable = (efi_get_next_variable_t *)
- efi.systab->runtime->get_next_variable;
- efi.set_variable = (efi_set_variable_t *)
- efi.systab->runtime->set_variable;
- efi.get_next_high_mono_count = (efi_get_next_high_mono_count_t *)
- efi.systab->runtime->get_next_high_mono_count;
- efi.reset_system = (efi_reset_system_t *)
- efi.systab->runtime->reset_system;
+ efi.get_time = virt_efi_get_time;
+ efi.set_time = virt_efi_set_time;
+ efi.get_wakeup_time = virt_efi_get_wakeup_time;
+ efi.set_wakeup_time = virt_efi_set_wakeup_time;
+ efi.get_variable = virt_efi_get_variable;
+ efi.get_next_variable = virt_efi_get_next_variable;
+ efi.set_variable = virt_efi_set_variable;
+ efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
+ efi.reset_system = virt_efi_reset_system;
}
void __init
res->end = res->start + ((md->num_pages << EFI_PAGE_SHIFT) - 1);
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
if (request_resource(&iomem_resource, res) < 0)
- printk(KERN_ERR PFX "Failed to allocate res %s : 0x%lx-0x%lx\n",
- res->name, res->start, res->end);
+ printk(KERN_ERR PFX "Failed to allocate res %s : "
+ "0x%llx-0x%llx\n", res->name,
+ (unsigned long long)res->start,
+ (unsigned long long)res->end);
/*
* We don't know which region contains kernel data so we try
* it repeatedly and let the resource manager test it.
git://git.onelab.eu / linux-2.6.git / blobdiff