Commit 47292771 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge branch 'WIP.x86/boot' into x86/boot, to pick up ready branch 



The E820 rework in WIP.x86/boot has gone through a couple of weeks
of exposure in -tip, merge it in a wider fashion.

Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents 5af21843 687d77a5

Documentation/x86/zero-page.txt

+3 −3
Original line number Diff line number Diff line
@@ -27,7 +27,7 @@ Offset Proto Name Meaning 
1C0/020	ALL	efi_info	EFI 32 information (struct efi_info)

1E0/004	ALL	alk_mem_k	Alternative mem check, in KB

1E4/004	ALL	scratch		Scratch field for the kernel setup code

1E8/001	ALL	e820_entries	Number of entries in e820_map (below)

1E8/001	ALL	e820_entries	Number of entries in e820_table (below)

1E9/001	ALL	eddbuf_entries	Number of entries in eddbuf (below)

1EA/001	ALL	edd_mbr_sig_buf_entries	Number of entries in edd_mbr_sig_buffer

				(below)
@@ -35,6 +35,6 @@ Offset Proto Name Meaning 
1EC/001	ALL     secure_boot	Secure boot is enabled in the firmware

1EF/001	ALL	sentinel	Used to detect broken bootloaders

290/040	ALL	edd_mbr_sig_buffer EDD MBR signatures

2D0/A00	ALL	e820_map	E820 memory map table

				(array of struct e820entry)

2D0/A00	ALL	e820_table	E820 memory map table

				(array of struct e820_entry)

D00/1EC	ALL	eddbuf		EDD data (array of struct edd_info)

arch/x86/boot/compressed/eboot.c

+23 −21
Original line number Diff line number Diff line
@@ -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);

arch/x86/boot/compressed/kaslr.c

+3 −3
Original line number Diff line number Diff line
@@ -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");

arch/x86/boot/header.S

+0 −1
Original line number Diff line number Diff line
@@ -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>

arch/x86/boot/memory.c

+3 −3
Original line number Diff line number Diff line
@@ -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;

}