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Diffstat (limited to 'arch/ia64/kernel/efi.c')
-rw-r--r--arch/ia64/kernel/efi.c123
1 files changed, 72 insertions, 51 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 728d7247a1a..741b99c1a0b 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -23,9 +23,11 @@
*/
#include <linux/module.h>
#include <linux/bootmem.h>
+#include <linux/crash_dump.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
+#include <linux/slab.h>
#include <linux/time.h>
#include <linux/efi.h>
#include <linux/kexec.h>
@@ -37,15 +39,22 @@
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/mca.h>
+#include <asm/setup.h>
+#include <asm/tlbflush.h>
#define EFI_DEBUG 0
+static __initdata unsigned long palo_phys;
+
+static __initdata efi_config_table_type_t arch_tables[] = {
+ {PROCESSOR_ABSTRACTION_LAYER_OVERWRITE_GUID, "PALO", &palo_phys},
+ {NULL_GUID, NULL, 0},
+};
+
extern efi_status_t efi_call_phys (void *, ...);
-struct efi efi;
-EXPORT_SYMBOL(efi);
static efi_runtime_services_t *runtime;
-static unsigned long mem_limit = ~0UL, max_addr = ~0UL, min_addr = 0UL;
+static u64 mem_limit = ~0UL, max_addr = ~0UL, min_addr = 0UL;
#define efi_call_virt(f, args...) (*(f))(args)
@@ -153,7 +162,7 @@ prefix##_get_next_variable (unsigned long *name_size, efi_char16_t *name, \
#define STUB_SET_VARIABLE(prefix, adjust_arg) \
static efi_status_t \
prefix##_set_variable (efi_char16_t *name, efi_guid_t *vendor, \
- unsigned long attr, unsigned long data_size, \
+ u32 attr, unsigned long data_size, \
void *data) \
{ \
struct ia64_fpreg fr[6]; \
@@ -355,7 +364,7 @@ efi_get_pal_addr (void)
if (++pal_code_count > 1) {
printk(KERN_ERR "Too many EFI Pal Code memory ranges, "
- "dropped @ %lx\n", md->phys_addr);
+ "dropped @ %llx\n", md->phys_addr);
continue;
}
/*
@@ -403,6 +412,41 @@ efi_get_pal_addr (void)
return NULL;
}
+
+static u8 __init palo_checksum(u8 *buffer, u32 length)
+{
+ u8 sum = 0;
+ u8 *end = buffer + length;
+
+ while (buffer < end)
+ sum = (u8) (sum + *(buffer++));
+
+ return sum;
+}
+
+/*
+ * Parse and handle PALO table which is published at:
+ * http://www.dig64.org/home/DIG64_PALO_R1_0.pdf
+ */
+static void __init handle_palo(unsigned long phys_addr)
+{
+ struct palo_table *palo = __va(phys_addr);
+ u8 checksum;
+
+ if (strncmp(palo->signature, PALO_SIG, sizeof(PALO_SIG) - 1)) {
+ printk(KERN_INFO "PALO signature incorrect.\n");
+ return;
+ }
+
+ checksum = palo_checksum((u8 *)palo, palo->length);
+ if (checksum) {
+ printk(KERN_INFO "PALO checksum incorrect.\n");
+ return;
+ }
+
+ setup_ptcg_sem(palo->max_tlb_purges, NPTCG_FROM_PALO);
+}
+
void
efi_map_pal_code (void)
{
@@ -420,6 +464,7 @@ efi_map_pal_code (void)
GRANULEROUNDDOWN((unsigned long) pal_vaddr),
pte_val(pfn_pte(__pa(pal_vaddr) >> PAGE_SHIFT, PAGE_KERNEL)),
IA64_GRANULE_SHIFT);
+ paravirt_dv_serialize_data();
ia64_set_psr(psr); /* restore psr */
}
@@ -427,12 +472,14 @@ void __init
efi_init (void)
{
void *efi_map_start, *efi_map_end;
- efi_config_table_t *config_tables;
efi_char16_t *c16;
u64 efi_desc_size;
char *cp, vendor[100] = "unknown";
int i;
+ set_bit(EFI_BOOT, &efi.flags);
+ set_bit(EFI_64BIT, &efi.flags);
+
/*
* It's too early to be able to use the standard kernel command line
* support...
@@ -452,10 +499,10 @@ efi_init (void)
}
}
if (min_addr != 0UL)
- printk(KERN_INFO "Ignoring memory below %luMB\n",
+ printk(KERN_INFO "Ignoring memory below %lluMB\n",
min_addr >> 20);
if (max_addr != ~0UL)
- printk(KERN_INFO "Ignoring memory above %luMB\n",
+ printk(KERN_INFO "Ignoring memory above %lluMB\n",
max_addr >> 20);
efi.systab = __va(ia64_boot_param->efi_systab);
@@ -473,8 +520,6 @@ efi_init (void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff);
- config_tables = __va(efi.systab->tables);
-
/* Show what we know for posterity */
c16 = __va(efi.systab->fw_vendor);
if (c16) {
@@ -487,37 +532,15 @@ efi_init (void)
efi.systab->hdr.revision >> 16,
efi.systab->hdr.revision & 0xffff, vendor);
- efi.mps = EFI_INVALID_TABLE_ADDR;
- efi.acpi = EFI_INVALID_TABLE_ADDR;
- efi.acpi20 = EFI_INVALID_TABLE_ADDR;
- efi.smbios = EFI_INVALID_TABLE_ADDR;
- efi.sal_systab = EFI_INVALID_TABLE_ADDR;
- efi.boot_info = EFI_INVALID_TABLE_ADDR;
- efi.hcdp = EFI_INVALID_TABLE_ADDR;
- efi.uga = EFI_INVALID_TABLE_ADDR;
-
- for (i = 0; i < (int) efi.systab->nr_tables; i++) {
- if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) {
- efi.mps = config_tables[i].table;
- printk(" MPS=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, ACPI_20_TABLE_GUID) == 0) {
- efi.acpi20 = config_tables[i].table;
- printk(" ACPI 2.0=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, ACPI_TABLE_GUID) == 0) {
- efi.acpi = config_tables[i].table;
- printk(" ACPI=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, SMBIOS_TABLE_GUID) == 0) {
- efi.smbios = config_tables[i].table;
- printk(" SMBIOS=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) == 0) {
- efi.sal_systab = config_tables[i].table;
- printk(" SALsystab=0x%lx", config_tables[i].table);
- } else if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
- efi.hcdp = config_tables[i].table;
- printk(" HCDP=0x%lx", config_tables[i].table);
- }
- }
- printk("\n");
+ set_bit(EFI_SYSTEM_TABLES, &efi.flags);
+
+ palo_phys = EFI_INVALID_TABLE_ADDR;
+
+ if (efi_config_init(arch_tables) != 0)
+ return;
+
+ if (palo_phys != EFI_INVALID_TABLE_ADDR)
+ handle_palo(palo_phys);
runtime = __va(efi.systab->runtime);
efi.get_time = phys_get_time;
@@ -639,6 +662,8 @@ efi_enter_virtual_mode (void)
return;
}
+ set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
+
/*
* Now that EFI is in virtual mode, we call the EFI functions more
* efficiently:
@@ -820,7 +845,7 @@ kern_mem_attribute (unsigned long phys_addr, unsigned long size)
EXPORT_SYMBOL(kern_mem_attribute);
int
-valid_phys_addr_range (unsigned long phys_addr, unsigned long size)
+valid_phys_addr_range (phys_addr_t phys_addr, unsigned long size)
{
u64 attr;
@@ -1019,7 +1044,7 @@ find_memmap_space (void)
* parts exist, and are WB.
*/
unsigned long
-efi_memmap_init(unsigned long *s, unsigned long *e)
+efi_memmap_init(u64 *s, u64 *e)
{
struct kern_memdesc *k, *prev = NULL;
u64 contig_low=0, contig_high=0;
@@ -1066,11 +1091,6 @@ efi_memmap_init(unsigned long *s, unsigned long *e)
if (!is_memory_available(md))
continue;
-#ifdef CONFIG_CRASH_DUMP
- /* saved_max_pfn should ignore max_addr= command line arg */
- if (saved_max_pfn < (efi_md_end(md) >> PAGE_SHIFT))
- saved_max_pfn = (efi_md_end(md) >> PAGE_SHIFT);
-#endif
/*
* Round ends inward to granule boundaries
* Give trimmings to uncached allocator
@@ -1186,9 +1206,10 @@ efi_initialize_iomem_resources(struct resource *code_resource,
if (md->attribute & EFI_MEMORY_WP) {
name = "System ROM";
flags |= IORESOURCE_READONLY;
- } else {
+ } else if (md->attribute == EFI_MEMORY_UC)
+ name = "Uncached RAM";
+ else
name = "System RAM";
- }
break;
case EFI_ACPI_MEMORY_NVS:
@@ -1288,7 +1309,7 @@ kdump_find_rsvd_region (unsigned long size, struct rsvd_region *r, int n)
}
#endif
-#ifdef CONFIG_PROC_VMCORE
+#ifdef CONFIG_CRASH_DUMP
/* locate the size find a the descriptor at a certain address */
unsigned long __init
vmcore_find_descriptor_size (unsigned long address)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 07:24:13 +0000