summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/boot/compressed/eboot.c16
-rw-r--r--arch/x86/boot/compressed/kaslr.c2
-rw-r--r--arch/x86/boot/memory.c4
-rw-r--r--arch/x86/include/asm/e820/types.h48
-rw-r--r--arch/x86/include/uapi/asm/bootparam.h18
-rw-r--r--arch/x86/include/uapi/asm/e820/types.h55
-rw-r--r--arch/x86/kernel/e820.c20
7 files changed, 83 insertions, 80 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 4cfba2f79dfd..a6099d7c39f6 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -900,7 +900,7 @@ static void add_e820ext(struct boot_params *params,
unsigned long size;
e820ext->type = SETUP_E820_EXT;
- e820ext->len = nr_entries * sizeof(struct e820_entry);
+ e820ext->len = nr_entries * sizeof(struct boot_e820_entry);
e820ext->next = 0;
data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
@@ -917,9 +917,9 @@ 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 e820_entry *e820_table = &params->e820_table[0];
+ struct boot_e820_entry *entry = params->e820_table;
struct efi_info *efi = &params->efi_info;
- struct e820_entry *prev = NULL;
+ struct boot_e820_entry *prev = NULL;
u32 nr_entries;
u32 nr_desc;
int i;
@@ -990,13 +990,13 @@ static efi_status_t setup_e820(struct boot_params *params,
return EFI_BUFFER_TOO_SMALL;
/* boot_params map full, switch to e820 extended */
- e820_table = (struct e820_entry *)e820ext->data;
+ entry = (struct boot_e820_entry *)e820ext->data;
}
- e820_table->addr = d->phys_addr;
- e820_table->size = d->num_pages << PAGE_SHIFT;
- e820_table->type = e820_type;
- prev = e820_table++;
+ entry->addr = d->phys_addr;
+ entry->size = d->num_pages << PAGE_SHIFT;
+ entry->type = e820_type;
+ prev = entry++;
nr_entries++;
}
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index e8155eab5474..6d9a546ec7ae 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 e820_entry *entry,
+static void process_e820_entry(struct boot_e820_entry *entry,
unsigned long minimum,
unsigned long image_size)
{
diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
index db62445b75aa..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 e820_entry *desc = boot_params.e820_table;
- static struct e820_entry 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;
diff --git a/arch/x86/include/asm/e820/types.h b/arch/x86/include/asm/e820/types.h
index cf6074f8d563..4adeed03a9a1 100644
--- a/arch/x86/include/asm/e820/types.h
+++ b/arch/x86/include/asm/e820/types.h
@@ -1,7 +1,53 @@
#ifndef _ASM_E820_TYPES_H
#define _ASM_E820_TYPES_H
-#include <uapi/asm/e820/types.h>
+#include <uapi/asm/bootparam.h>
+
+/*
+ * These are the E820 types known to the kernel:
+ */
+enum e820_type {
+ E820_TYPE_RAM = 1,
+ E820_TYPE_RESERVED = 2,
+ E820_TYPE_ACPI = 3,
+ E820_TYPE_NVS = 4,
+ E820_TYPE_UNUSABLE = 5,
+ E820_TYPE_PMEM = 7,
+
+ /*
+ * This is a non-standardized way to represent ADR or
+ * NVDIMM regions that persist over a reboot.
+ *
+ * The kernel will ignore their special capabilities
+ * unless the CONFIG_X86_PMEM_LEGACY=y option is set.
+ *
+ * ( Note that older platforms also used 6 for the same
+ * type of memory, but newer versions switched to 12 as
+ * 6 was assigned differently. Some time they will learn... )
+ */
+ E820_TYPE_PRAM = 12,
+
+ /*
+ * Reserved RAM used by the kernel itself if
+ * CONFIG_INTEL_TXT=y is enabled, memory of this type
+ * will be included in the S3 integrity calculation
+ * and so should not include any memory that the BIOS
+ * might alter over the S3 transition:
+ */
+ E820_TYPE_RESERVED_KERN = 128,
+};
+
+/*
+ * A single E820 map entry, describing a memory range of [addr...addr+size-1],
+ * of 'type' memory type:
+ *
+ * (We pack it because there can be thousands of them on large systems.)
+ */
+struct e820_entry {
+ u64 addr;
+ u64 size;
+ enum e820_type type;
+} __attribute__((packed));
/*
* The legacy E820 BIOS limits us to 128 (E820_MAX_ENTRIES_ZEROPAGE) nodes
diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h
index 7f04c45aa429..2a5fd6bb0601 100644
--- a/arch/x86/include/uapi/asm/bootparam.h
+++ b/arch/x86/include/uapi/asm/bootparam.h
@@ -34,7 +34,6 @@
#include <linux/screen_info.h>
#include <linux/apm_bios.h>
#include <linux/edd.h>
-#include <uapi/asm/e820/types.h>
#include <asm/ist.h>
#include <video/edid.h>
@@ -111,6 +110,21 @@ struct efi_info {
__u32 efi_memmap_hi;
};
+/*
+ * This is the maximum number of entries in struct boot_params::e820_table
+ * (the zeropage), which is part of the x86 boot protocol ABI:
+ */
+#define E820_MAX_ENTRIES_ZEROPAGE 128
+
+/*
+ * The E820 memory region entry of the boot protocol ABI:
+ */
+struct boot_e820_entry {
+ __u64 addr;
+ __u64 size;
+ __u32 type;
+} __attribute__((packed));
+
/* The so-called "zeropage" */
struct boot_params {
struct screen_info screen_info; /* 0x000 */
@@ -152,7 +166,7 @@ struct boot_params {
struct setup_header hdr; /* setup header */ /* 0x1f1 */
__u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
__u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
- struct e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]; /* 0x2d0 */
+ struct boot_e820_entry e820_table[E820_MAX_ENTRIES_ZEROPAGE]; /* 0x2d0 */
__u8 _pad8[48]; /* 0xcd0 */
struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
__u8 _pad9[276]; /* 0xeec */
diff --git a/arch/x86/include/uapi/asm/e820/types.h b/arch/x86/include/uapi/asm/e820/types.h
deleted file mode 100644
index 3ac962f724f5..000000000000
--- a/arch/x86/include/uapi/asm/e820/types.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef _UAPI_ASM_E820_TYPES_H
-#define _UAPI_ASM_E820_TYPES_H
-
-/*
- * This is the maximum number of entries in struct boot_params::e820_table (the zeropage),
- * which is part of the x86 boot protocol ABI:
- */
-#define E820_MAX_ENTRIES_ZEROPAGE 128
-
-#ifndef __ASSEMBLY__
-
-enum e820_type {
- E820_TYPE_RAM = 1,
- E820_TYPE_RESERVED = 2,
- E820_TYPE_ACPI = 3,
- E820_TYPE_NVS = 4,
- E820_TYPE_UNUSABLE = 5,
- E820_TYPE_PMEM = 7,
-
- /*
- * This is a non-standardized way to represent ADR or
- * NVDIMM regions that persist over a reboot.
- *
- * The kernel will ignore their special capabilities
- * unless the CONFIG_X86_PMEM_LEGACY=y option is set.
- *
- * ( Note that older platforms also used 6 for the same
- * type of memory, but newer versions switched to 12 as
- * 6 was assigned differently. Some time they will learn... )
- */
- E820_TYPE_PRAM = 12,
-
- /*
- * Reserved RAM used by the kernel itself if
- * CONFIG_INTEL_TXT=y is enabled, memory of this type
- * will be included in the S3 integrity calculation
- * and so should not include any memory that the BIOS
- * might alter over the S3 transition:
- */
- E820_TYPE_RESERVED_KERN = 128,
-};
-
-/*
- * A single E820 map entry, describing a memory range of [addr...addr+size-1],
- * of 'type' memory type:
- */
-struct e820_entry {
- __u64 addr;
- __u64 size;
- enum e820_type type;
-} __attribute__((packed));
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* _UAPI_ASM_E820_TYPES_H */
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 20834a81854e..2da2f7238a72 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -366,9 +366,9 @@ int __init e820__update_table(struct e820_table *table)
return __e820__update_table(table->entries, ARRAY_SIZE(table->entries), &table->nr_entries);
}
-static int __init __append_e820_table(struct e820_entry *entries, u32 nr_entries)
+static int __init __append_e820_table(struct boot_e820_entry *entries, u32 nr_entries)
{
- struct e820_entry *entry = entries;
+ struct boot_e820_entry *entry = entries;
while (nr_entries) {
u64 start = entry->addr;
@@ -397,7 +397,7 @@ static int __init __append_e820_table(struct e820_entry *entries, u32 nr_entries
* will have given us a memory map that we can use to properly
* set up memory. If we aren't, we'll fake a memory map.
*/
-static int __init append_e820_table(struct e820_entry *entries, u32 nr_entries)
+static int __init append_e820_table(struct boot_e820_entry *entries, u32 nr_entries)
{
/* Only one memory region (or negative)? Ignore it */
if (nr_entries < 2)
@@ -668,12 +668,12 @@ __init void e820__reallocate_tables(void)
void __init e820__memory_setup_extended(u64 phys_addr, u32 data_len)
{
int entries;
- struct e820_entry *extmap;
+ struct boot_e820_entry *extmap;
struct setup_data *sdata;
sdata = early_memremap(phys_addr, data_len);
entries = sdata->len / sizeof(*extmap);
- extmap = (struct e820_entry *)(sdata->data);
+ extmap = (struct boot_e820_entry *)(sdata->data);
__append_e820_table(extmap, entries);
e820__update_table(e820_table);
@@ -1140,7 +1140,6 @@ void __init e820__reserve_resources_late(void)
char *__init e820__memory_setup_default(void)
{
char *who = "BIOS-e820";
- u32 new_nr;
/*
* Try to copy the BIOS-supplied E820-map.
@@ -1148,10 +1147,6 @@ char *__init e820__memory_setup_default(void)
* Otherwise fake a memory map; one section from 0k->640k,
* the next section from 1mb->appropriate_mem_k
*/
- new_nr = boot_params.e820_entries;
- __e820__update_table(boot_params.e820_table, ARRAY_SIZE(boot_params.e820_table), &new_nr);
- boot_params.e820_entries = new_nr;
-
if (append_e820_table(boot_params.e820_table, boot_params.e820_entries) < 0) {
u64 mem_size;
@@ -1169,6 +1164,9 @@ char *__init e820__memory_setup_default(void)
e820__range_add(HIGH_MEMORY, mem_size << 10, E820_TYPE_RAM);
}
+ /* We just appended a lot of ranges, sanitize the table: */
+ e820__update_table(e820_table);
+
return who;
}
@@ -1182,7 +1180,7 @@ void __init e820__memory_setup(void)
char *who;
/* This is a firmware interface ABI - make sure we don't break it: */
- BUILD_BUG_ON(sizeof(struct e820_entry) != 20);
+ BUILD_BUG_ON(sizeof(struct boot_e820_entry) != 20);
who = x86_init.resources.memory_setup();
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-06 14:53:05 +0300