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-rw-r--r--arch/x86/boot/boot.h2
-rw-r--r--arch/x86/boot/compressed/eboot.c44
-rw-r--r--arch/x86/boot/compressed/error.c1
-rw-r--r--arch/x86/boot/compressed/kaslr.c17
-rw-r--r--arch/x86/boot/cpucheck.c9
-rw-r--r--arch/x86/boot/cpuflags.c12
-rw-r--r--arch/x86/boot/header.S1
-rw-r--r--arch/x86/boot/memory.c6
8 files changed, 59 insertions, 33 deletions
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index 9b42b6d1e902..ef5a9cc66fb8 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -16,7 +16,7 @@
#ifndef BOOT_BOOT_H
#define BOOT_BOOT_H
-#define STACK_SIZE 512 /* Minimum number of bytes for stack */
+#define STACK_SIZE 1024 /* Minimum number of bytes for stack */
#ifndef __ASSEMBLY__
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 801c7a158e55..cbf4b87f55b9 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -9,7 +9,9 @@
#include <linux/efi.h>
#include <linux/pci.h>
+
#include <asm/efi.h>
+#include <asm/e820/types.h>
#include <asm/setup.h>
#include <asm/desc.h>
@@ -729,7 +731,7 @@ static void add_e820ext(struct boot_params *params,
unsigned long size;
e820ext->type = SETUP_E820_EXT;
- e820ext->len = nr_entries * sizeof(struct e820entry);
+ e820ext->len = nr_entries * sizeof(struct boot_e820_entry);
e820ext->next = 0;
data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
@@ -746,9 +748,9 @@ static void add_e820ext(struct boot_params *params,
static efi_status_t setup_e820(struct boot_params *params,
struct setup_data *e820ext, u32 e820ext_size)
{
- struct e820entry *e820_map = &params->e820_map[0];
+ struct boot_e820_entry *entry = params->e820_table;
struct efi_info *efi = &params->efi_info;
- struct e820entry *prev = NULL;
+ struct boot_e820_entry *prev = NULL;
u32 nr_entries;
u32 nr_desc;
int i;
@@ -773,15 +775,15 @@ static efi_status_t setup_e820(struct boot_params *params,
case EFI_MEMORY_MAPPED_IO:
case EFI_MEMORY_MAPPED_IO_PORT_SPACE:
case EFI_PAL_CODE:
- e820_type = E820_RESERVED;
+ e820_type = E820_TYPE_RESERVED;
break;
case EFI_UNUSABLE_MEMORY:
- e820_type = E820_UNUSABLE;
+ e820_type = E820_TYPE_UNUSABLE;
break;
case EFI_ACPI_RECLAIM_MEMORY:
- e820_type = E820_ACPI;
+ e820_type = E820_TYPE_ACPI;
break;
case EFI_LOADER_CODE:
@@ -789,15 +791,15 @@ static efi_status_t setup_e820(struct boot_params *params,
case EFI_BOOT_SERVICES_CODE:
case EFI_BOOT_SERVICES_DATA:
case EFI_CONVENTIONAL_MEMORY:
- e820_type = E820_RAM;
+ e820_type = E820_TYPE_RAM;
break;
case EFI_ACPI_MEMORY_NVS:
- e820_type = E820_NVS;
+ e820_type = E820_TYPE_NVS;
break;
case EFI_PERSISTENT_MEMORY:
- e820_type = E820_PMEM;
+ e820_type = E820_TYPE_PMEM;
break;
default:
@@ -811,26 +813,26 @@ static efi_status_t setup_e820(struct boot_params *params,
continue;
}
- if (nr_entries == ARRAY_SIZE(params->e820_map)) {
- u32 need = (nr_desc - i) * sizeof(struct e820entry) +
+ if (nr_entries == ARRAY_SIZE(params->e820_table)) {
+ u32 need = (nr_desc - i) * sizeof(struct e820_entry) +
sizeof(struct setup_data);
if (!e820ext || e820ext_size < need)
return EFI_BUFFER_TOO_SMALL;
/* boot_params map full, switch to e820 extended */
- e820_map = (struct e820entry *)e820ext->data;
+ entry = (struct boot_e820_entry *)e820ext->data;
}
- e820_map->addr = d->phys_addr;
- e820_map->size = d->num_pages << PAGE_SHIFT;
- e820_map->type = e820_type;
- prev = e820_map++;
+ entry->addr = d->phys_addr;
+ entry->size = d->num_pages << PAGE_SHIFT;
+ entry->type = e820_type;
+ prev = entry++;
nr_entries++;
}
- if (nr_entries > ARRAY_SIZE(params->e820_map)) {
- u32 nr_e820ext = nr_entries - ARRAY_SIZE(params->e820_map);
+ if (nr_entries > ARRAY_SIZE(params->e820_table)) {
+ u32 nr_e820ext = nr_entries - ARRAY_SIZE(params->e820_table);
add_e820ext(params, e820ext, nr_e820ext);
nr_entries -= nr_e820ext;
@@ -848,7 +850,7 @@ static efi_status_t alloc_e820ext(u32 nr_desc, struct setup_data **e820ext,
unsigned long size;
size = sizeof(struct setup_data) +
- sizeof(struct e820entry) * nr_desc;
+ sizeof(struct e820_entry) * nr_desc;
if (*e820ext) {
efi_call_early(free_pool, *e820ext);
@@ -884,9 +886,9 @@ static efi_status_t exit_boot_func(efi_system_table_t *sys_table_arg,
if (first) {
nr_desc = *map->buff_size / *map->desc_size;
- if (nr_desc > ARRAY_SIZE(p->boot_params->e820_map)) {
+ if (nr_desc > ARRAY_SIZE(p->boot_params->e820_table)) {
u32 nr_e820ext = nr_desc -
- ARRAY_SIZE(p->boot_params->e820_map);
+ ARRAY_SIZE(p->boot_params->e820_table);
status = alloc_e820ext(nr_e820ext, &p->e820ext,
&p->e820ext_size);
diff --git a/arch/x86/boot/compressed/error.c b/arch/x86/boot/compressed/error.c
index 6248740b68b5..31922023de49 100644
--- a/arch/x86/boot/compressed/error.c
+++ b/arch/x86/boot/compressed/error.c
@@ -4,6 +4,7 @@
* memcpy() and memmove() are defined for the compressed boot environment.
*/
#include "misc.h"
+#include "error.h"
void warn(char *m)
{
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index 8b7c9e75edcb..54c24f0a43d3 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -426,7 +426,7 @@ static unsigned long slots_fetch_random(void)
return 0;
}
-static void process_e820_entry(struct e820entry *entry,
+static void process_e820_entry(struct boot_e820_entry *entry,
unsigned long minimum,
unsigned long image_size)
{
@@ -435,7 +435,7 @@ static void process_e820_entry(struct e820entry *entry,
unsigned long start_orig;
/* Skip non-RAM entries. */
- if (entry->type != E820_RAM)
+ if (entry->type != E820_TYPE_RAM)
return;
/* On 32-bit, ignore entries entirely above our maximum. */
@@ -518,7 +518,7 @@ static unsigned long find_random_phys_addr(unsigned long minimum,
/* Verify potential e820 positions, appending to slots list. */
for (i = 0; i < boot_params->e820_entries; i++) {
- process_e820_entry(&boot_params->e820_map[i], minimum,
+ process_e820_entry(&boot_params->e820_table[i], minimum,
image_size);
if (slot_area_index == MAX_SLOT_AREA) {
debug_putstr("Aborted e820 scan (slot_areas full)!\n");
@@ -597,10 +597,17 @@ void choose_random_location(unsigned long input,
add_identity_map(random_addr, output_size);
*output = random_addr;
}
+
+ /*
+ * This loads the identity mapping page table.
+ * This should only be done if a new physical address
+ * is found for the kernel, otherwise we should keep
+ * the old page table to make it be like the "nokaslr"
+ * case.
+ */
+ finalize_identity_maps();
}
- /* This actually loads the identity pagetable on x86_64. */
- finalize_identity_maps();
/* Pick random virtual address starting from LOAD_PHYSICAL_ADDR. */
if (IS_ENABLED(CONFIG_X86_64))
diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c
index 4ad7d70e8739..8f0c4c9fc904 100644
--- a/arch/x86/boot/cpucheck.c
+++ b/arch/x86/boot/cpucheck.c
@@ -44,6 +44,15 @@ static const u32 req_flags[NCAPINTS] =
0, /* REQUIRED_MASK5 not implemented in this file */
REQUIRED_MASK6,
0, /* REQUIRED_MASK7 not implemented in this file */
+ 0, /* REQUIRED_MASK8 not implemented in this file */
+ 0, /* REQUIRED_MASK9 not implemented in this file */
+ 0, /* REQUIRED_MASK10 not implemented in this file */
+ 0, /* REQUIRED_MASK11 not implemented in this file */
+ 0, /* REQUIRED_MASK12 not implemented in this file */
+ 0, /* REQUIRED_MASK13 not implemented in this file */
+ 0, /* REQUIRED_MASK14 not implemented in this file */
+ 0, /* REQUIRED_MASK15 not implemented in this file */
+ REQUIRED_MASK16,
};
#define A32(a, b, c, d) (((d) << 24)+((c) << 16)+((b) << 8)+(a))
diff --git a/arch/x86/boot/cpuflags.c b/arch/x86/boot/cpuflags.c
index 6687ab953257..9e77c23c2422 100644
--- a/arch/x86/boot/cpuflags.c
+++ b/arch/x86/boot/cpuflags.c
@@ -70,16 +70,19 @@ int has_eflag(unsigned long mask)
# define EBX_REG "=b"
#endif
-static inline void cpuid(u32 id, u32 *a, u32 *b, u32 *c, u32 *d)
+static inline void cpuid_count(u32 id, u32 count,
+ u32 *a, u32 *b, u32 *c, u32 *d)
{
asm volatile(".ifnc %%ebx,%3 ; movl %%ebx,%3 ; .endif \n\t"
"cpuid \n\t"
".ifnc %%ebx,%3 ; xchgl %%ebx,%3 ; .endif \n\t"
: "=a" (*a), "=c" (*c), "=d" (*d), EBX_REG (*b)
- : "a" (id)
+ : "a" (id), "c" (count)
);
}
+#define cpuid(id, a, b, c, d) cpuid_count(id, 0, a, b, c, d)
+
void get_cpuflags(void)
{
u32 max_intel_level, max_amd_level;
@@ -108,6 +111,11 @@ void get_cpuflags(void)
cpu.model += ((tfms >> 16) & 0xf) << 4;
}
+ if (max_intel_level >= 0x00000007) {
+ cpuid_count(0x00000007, 0, &ignored, &ignored,
+ &cpu.flags[16], &ignored);
+ }
+
cpuid(0x80000000, &max_amd_level, &ignored, &ignored,
&ignored);
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index 3dd5be33aaa7..2ed8f0c25def 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -18,7 +18,6 @@
#include <asm/segment.h>
#include <generated/utsrelease.h>
#include <asm/boot.h>
-#include <asm/e820.h>
#include <asm/page_types.h>
#include <asm/setup.h>
#include <asm/bootparam.h>
diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
index db75d07c3645..d9c28c87e477 100644
--- a/arch/x86/boot/memory.c
+++ b/arch/x86/boot/memory.c
@@ -21,8 +21,8 @@ static int detect_memory_e820(void)
{
int count = 0;
struct biosregs ireg, oreg;
- struct e820entry *desc = boot_params.e820_map;
- static struct e820entry buf; /* static so it is zeroed */
+ struct boot_e820_entry *desc = boot_params.e820_table;
+ static struct boot_e820_entry buf; /* static so it is zeroed */
initregs(&ireg);
ireg.ax = 0xe820;
@@ -66,7 +66,7 @@ static int detect_memory_e820(void)
*desc++ = buf;
count++;
- } while (ireg.ebx && count < ARRAY_SIZE(boot_params.e820_map));
+ } while (ireg.ebx && count < ARRAY_SIZE(boot_params.e820_table));
return boot_params.e820_entries = count;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 12:08:23 +0000