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-rw-r--r--Documentation/arm/uefi.txt2
-rw-r--r--Documentation/kernel-parameters.txt15
-rw-r--r--arch/arm64/kernel/efi.c19
-rw-r--r--arch/x86/boot/compressed/eboot.c28
-rw-r--r--arch/x86/include/asm/efi.h1
-rw-r--r--arch/x86/kernel/setup.c4
-rw-r--r--arch/x86/platform/efi/efi.c6
-rw-r--r--drivers/firmware/efi/Kconfig22
-rw-r--r--drivers/firmware/efi/Makefile1
-rw-r--r--drivers/firmware/efi/efi-pstore.c1
-rw-r--r--drivers/firmware/efi/efi.c62
-rw-r--r--drivers/firmware/efi/esrt.c19
-rw-r--r--drivers/firmware/efi/fake_mem.c238
-rw-r--r--drivers/video/fbdev/efifb.c24
-rw-r--r--include/linux/efi.h22
-rw-r--r--include/uapi/linux/screen_info.h5
16 files changed, 402 insertions, 67 deletions
diff --git a/Documentation/arm/uefi.txt b/Documentation/arm/uefi.txt
index d60030a1b909..7b3fdfe0f7ba 100644
--- a/Documentation/arm/uefi.txt
+++ b/Documentation/arm/uefi.txt
@@ -60,5 +60,3 @@ linux,uefi-mmap-desc-ver | 32-bit | Version of the mmap descriptor format.
--------------------------------------------------------------------------------
linux,uefi-stub-kern-ver | string | Copy of linux_banner from build.
--------------------------------------------------------------------------------
-
-For verbose debug messages, specify 'uefi_debug' on the kernel command line.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 22a4b687ea5b..50fc09b623f6 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1094,6 +1094,21 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
you are really sure that your UEFI does sane gc and
fulfills the spec otherwise your board may brick.
+ efi_fake_mem= nn[KMG]@ss[KMG]:aa[,nn[KMG]@ss[KMG]:aa,..] [EFI; X86]
+ Add arbitrary attribute to specific memory range by
+ updating original EFI memory map.
+ Region of memory which aa attribute is added to is
+ from ss to ss+nn.
+ If efi_fake_mem=2G@4G:0x10000,2G@0x10a0000000:0x10000
+ is specified, EFI_MEMORY_MORE_RELIABLE(0x10000)
+ attribute is added to range 0x100000000-0x180000000 and
+ 0x10a0000000-0x1120000000.
+
+ Using this parameter you can do debugging of EFI memmap
+ related feature. For example, you can do debugging of
+ Address Range Mirroring feature even if your box
+ doesn't support it.
+
eisa_irq_edge= [PARISC,HW]
See header of drivers/parisc/eisa.c.
diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index 13671a9cf016..4b7df346e388 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -51,15 +51,6 @@ static struct mm_struct efi_mm = {
INIT_MM_CONTEXT(efi_mm)
};
-static int uefi_debug __initdata;
-static int __init uefi_debug_setup(char *str)
-{
- uefi_debug = 1;
-
- return 0;
-}
-early_param("uefi_debug", uefi_debug_setup);
-
static int __init is_normal_ram(efi_memory_desc_t *md)
{
if (md->attribute & EFI_MEMORY_WB)
@@ -171,14 +162,14 @@ static __init void reserve_regions(void)
efi_memory_desc_t *md;
u64 paddr, npages, size;
- if (uefi_debug)
+ if (efi_enabled(EFI_DBG))
pr_info("Processing EFI memory map:\n");
for_each_efi_memory_desc(&memmap, md) {
paddr = md->phys_addr;
npages = md->num_pages;
- if (uefi_debug) {
+ if (efi_enabled(EFI_DBG)) {
char buf[64];
pr_info(" 0x%012llx-0x%012llx %s",
@@ -194,11 +185,11 @@ static __init void reserve_regions(void)
if (is_reserve_region(md)) {
memblock_reserve(paddr, size);
- if (uefi_debug)
+ if (efi_enabled(EFI_DBG))
pr_cont("*");
}
- if (uefi_debug)
+ if (efi_enabled(EFI_DBG))
pr_cont("\n");
}
@@ -210,7 +201,7 @@ void __init efi_init(void)
struct efi_fdt_params params;
/* Grab UEFI information placed in FDT by stub */
- if (!efi_get_fdt_params(&params, uefi_debug))
+ if (!efi_get_fdt_params(&params))
return;
efi_system_table = params.system_table;
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index db51c1f27446..583d539a4197 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -624,7 +624,7 @@ setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line,
static efi_status_t
__gop_query32(struct efi_graphics_output_protocol_32 *gop32,
struct efi_graphics_output_mode_info **info,
- unsigned long *size, u32 *fb_base)
+ unsigned long *size, u64 *fb_base)
{
struct efi_graphics_output_protocol_mode_32 *mode;
efi_status_t status;
@@ -650,7 +650,8 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
unsigned long nr_gops;
u16 width, height;
u32 pixels_per_scan_line;
- u32 fb_base;
+ u32 ext_lfb_base;
+ u64 fb_base;
struct efi_pixel_bitmask pixel_info;
int pixel_format;
efi_status_t status;
@@ -667,7 +668,7 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
bool conout_found = false;
void *dummy = NULL;
u32 h = handles[i];
- u32 current_fb_base;
+ u64 current_fb_base;
status = efi_call_early(handle_protocol, h,
proto, (void **)&gop32);
@@ -715,6 +716,13 @@ setup_gop32(struct screen_info *si, efi_guid_t *proto,
si->lfb_width = width;
si->lfb_height = height;
si->lfb_base = fb_base;
+
+ ext_lfb_base = (u64)(unsigned long)fb_base >> 32;
+ if (ext_lfb_base) {
+ si->capabilities |= VIDEO_CAPABILITY_64BIT_BASE;
+ si->ext_lfb_base = ext_lfb_base;
+ }
+
si->pages = 1;
setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format);
@@ -729,7 +737,7 @@ out:
static efi_status_t
__gop_query64(struct efi_graphics_output_protocol_64 *gop64,
struct efi_graphics_output_mode_info **info,
- unsigned long *size, u32 *fb_base)
+ unsigned long *size, u64 *fb_base)
{
struct efi_graphics_output_protocol_mode_64 *mode;
efi_status_t status;
@@ -755,7 +763,8 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
unsigned long nr_gops;
u16 width, height;
u32 pixels_per_scan_line;
- u32 fb_base;
+ u32 ext_lfb_base;
+ u64 fb_base;
struct efi_pixel_bitmask pixel_info;
int pixel_format;
efi_status_t status;
@@ -772,7 +781,7 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
bool conout_found = false;
void *dummy = NULL;
u64 h = handles[i];
- u32 current_fb_base;
+ u64 current_fb_base;
status = efi_call_early(handle_protocol, h,
proto, (void **)&gop64);
@@ -820,6 +829,13 @@ setup_gop64(struct screen_info *si, efi_guid_t *proto,
si->lfb_width = width;
si->lfb_height = height;
si->lfb_base = fb_base;
+
+ ext_lfb_base = (u64)(unsigned long)fb_base >> 32;
+ if (ext_lfb_base) {
+ si->capabilities |= VIDEO_CAPABILITY_64BIT_BASE;
+ si->ext_lfb_base = ext_lfb_base;
+ }
+
si->pages = 1;
setup_pixel_info(si, pixels_per_scan_line, pixel_info, pixel_format);
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index ae68be92f755..0010c78c4998 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -105,6 +105,7 @@ extern void __init efi_set_executable(efi_memory_desc_t *md, bool executable);
extern int __init efi_memblock_x86_reserve_range(void);
extern pgd_t * __init efi_call_phys_prolog(void);
extern void __init efi_call_phys_epilog(pgd_t *save_pgd);
+extern void __init efi_print_memmap(void);
extern void __init efi_unmap_memmap(void);
extern void __init efi_memory_uc(u64 addr, unsigned long size);
extern void __init efi_map_region(efi_memory_desc_t *md);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index fdb7f2a2d328..30b4c446b68e 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1079,8 +1079,10 @@ void __init setup_arch(char **cmdline_p)
memblock_set_current_limit(ISA_END_ADDRESS);
memblock_x86_fill();
- if (efi_enabled(EFI_BOOT))
+ if (efi_enabled(EFI_BOOT)) {
+ efi_fake_memmap();
efi_find_mirror();
+ }
/*
* The EFI specification says that boot service code won't be called
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index f55f2234a2e0..3e1d09e885c0 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -222,7 +222,7 @@ int __init efi_memblock_x86_reserve_range(void)
return 0;
}
-static void __init print_efi_memmap(void)
+void __init efi_print_memmap(void)
{
#ifdef EFI_DEBUG
efi_memory_desc_t *md;
@@ -524,7 +524,7 @@ void __init efi_init(void)
return;
if (efi_enabled(EFI_DBG))
- print_efi_memmap();
+ efi_print_memmap();
efi_esrt_init();
}
@@ -1026,8 +1026,6 @@ static int __init arch_parse_efi_cmdline(char *str)
if (parse_option_str(str, "old_map"))
set_bit(EFI_OLD_MEMMAP, &efi.flags);
- if (parse_option_str(str, "debug"))
- set_bit(EFI_DBG, &efi.flags);
return 0;
}
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 84533e02fbf8..e1670d533f97 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -52,6 +52,28 @@ config EFI_RUNTIME_MAP
See also Documentation/ABI/testing/sysfs-firmware-efi-runtime-map.
+config EFI_FAKE_MEMMAP
+ bool "Enable EFI fake memory map"
+ depends on EFI && X86
+ default n
+ help
+ Saying Y here will enable "efi_fake_mem" boot option.
+ By specifying this parameter, you can add arbitrary attribute
+ to specific memory range by updating original (firmware provided)
+ EFI memmap.
+ This is useful for debugging of EFI memmap related feature.
+ e.g. Address Range Mirroring feature.
+
+config EFI_MAX_FAKE_MEM
+ int "maximum allowable number of ranges in efi_fake_mem boot option"
+ depends on EFI_FAKE_MEMMAP
+ range 1 128
+ default 8
+ help
+ Maximum allowable number of ranges in efi_fake_mem boot option.
+ Ranges can be set up to this value using comma-separated list.
+ The default value is 8.
+
config EFI_PARAMS_FROM_FDT
bool
help
diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile
index 6fd3da938717..c24f00569acb 100644
--- a/drivers/firmware/efi/Makefile
+++ b/drivers/firmware/efi/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_UEFI_CPER) += cper.o
obj-$(CONFIG_EFI_RUNTIME_MAP) += runtime-map.o
obj-$(CONFIG_EFI_RUNTIME_WRAPPERS) += runtime-wrappers.o
obj-$(CONFIG_EFI_STUB) += libstub/
+obj-$(CONFIG_EFI_FAKE_MEMMAP) += fake_mem.o
diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index e992abc5ef26..c8d794c58479 100644
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -400,3 +400,4 @@ module_exit(efivars_pstore_exit);
MODULE_DESCRIPTION("EFI variable backend for pstore");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:efivars");
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 16c4928e36af..31fc864eb037 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -26,20 +26,21 @@
#include <linux/platform_device.h>
struct efi __read_mostly efi = {
- .mps = EFI_INVALID_TABLE_ADDR,
- .acpi = EFI_INVALID_TABLE_ADDR,
- .acpi20 = EFI_INVALID_TABLE_ADDR,
- .smbios = EFI_INVALID_TABLE_ADDR,
- .smbios3 = EFI_INVALID_TABLE_ADDR,
- .sal_systab = EFI_INVALID_TABLE_ADDR,
- .boot_info = EFI_INVALID_TABLE_ADDR,
- .hcdp = EFI_INVALID_TABLE_ADDR,
- .uga = EFI_INVALID_TABLE_ADDR,
- .uv_systab = EFI_INVALID_TABLE_ADDR,
- .fw_vendor = EFI_INVALID_TABLE_ADDR,
- .runtime = EFI_INVALID_TABLE_ADDR,
- .config_table = EFI_INVALID_TABLE_ADDR,
- .esrt = EFI_INVALID_TABLE_ADDR,
+ .mps = EFI_INVALID_TABLE_ADDR,
+ .acpi = EFI_INVALID_TABLE_ADDR,
+ .acpi20 = EFI_INVALID_TABLE_ADDR,
+ .smbios = EFI_INVALID_TABLE_ADDR,
+ .smbios3 = EFI_INVALID_TABLE_ADDR,
+ .sal_systab = EFI_INVALID_TABLE_ADDR,
+ .boot_info = EFI_INVALID_TABLE_ADDR,
+ .hcdp = EFI_INVALID_TABLE_ADDR,
+ .uga = EFI_INVALID_TABLE_ADDR,
+ .uv_systab = EFI_INVALID_TABLE_ADDR,
+ .fw_vendor = EFI_INVALID_TABLE_ADDR,
+ .runtime = EFI_INVALID_TABLE_ADDR,
+ .config_table = EFI_INVALID_TABLE_ADDR,
+ .esrt = EFI_INVALID_TABLE_ADDR,
+ .properties_table = EFI_INVALID_TABLE_ADDR,
};
EXPORT_SYMBOL(efi);
@@ -63,6 +64,9 @@ static int __init parse_efi_cmdline(char *str)
return -EINVAL;
}
+ if (parse_option_str(str, "debug"))
+ set_bit(EFI_DBG, &efi.flags);
+
if (parse_option_str(str, "noruntime"))
disable_runtime = true;
@@ -362,6 +366,7 @@ static __initdata efi_config_table_type_t common_tables[] = {
{SMBIOS3_TABLE_GUID, "SMBIOS 3.0", &efi.smbios3},
{UGA_IO_PROTOCOL_GUID, "UGA", &efi.uga},
{EFI_SYSTEM_RESOURCE_TABLE_GUID, "ESRT", &efi.esrt},
+ {EFI_PROPERTIES_TABLE_GUID, "PROP", &efi.properties_table},
{NULL_GUID, NULL, NULL},
};
@@ -421,6 +426,24 @@ int __init efi_config_parse_tables(void *config_tables, int count, int sz,
}
pr_cont("\n");
set_bit(EFI_CONFIG_TABLES, &efi.flags);
+
+ /* Parse the EFI Properties table if it exists */
+ if (efi.properties_table != EFI_INVALID_TABLE_ADDR) {
+ efi_properties_table_t *tbl;
+
+ tbl = early_memremap(efi.properties_table, sizeof(*tbl));
+ if (tbl == NULL) {
+ pr_err("Could not map Properties table!\n");
+ return -ENOMEM;
+ }
+
+ if (tbl->memory_protection_attribute &
+ EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA)
+ set_bit(EFI_NX_PE_DATA, &efi.flags);
+
+ early_memunmap(tbl, sizeof(*tbl));
+ }
+
return 0;
}
@@ -489,7 +512,6 @@ static __initdata struct {
};
struct param_info {
- int verbose;
int found;
void *params;
};
@@ -520,21 +542,20 @@ static int __init fdt_find_uefi_params(unsigned long node, const char *uname,
else
*(u64 *)dest = val;
- if (info->verbose)
+ if (efi_enabled(EFI_DBG))
pr_info(" %s: 0x%0*llx\n", dt_params[i].name,
dt_params[i].size * 2, val);
}
return 1;
}
-int __init efi_get_fdt_params(struct efi_fdt_params *params, int verbose)
+int __init efi_get_fdt_params(struct efi_fdt_params *params)
{
struct param_info info;
int ret;
pr_info("Getting EFI parameters from FDT:\n");
- info.verbose = verbose;
info.found = 0;
info.params = params;
@@ -590,12 +611,13 @@ char * __init efi_md_typeattr_format(char *buf, size_t size,
if (attr & ~(EFI_MEMORY_UC | EFI_MEMORY_WC | EFI_MEMORY_WT |
EFI_MEMORY_WB | EFI_MEMORY_UCE | EFI_MEMORY_RO |
EFI_MEMORY_WP | EFI_MEMORY_RP | EFI_MEMORY_XP |
- EFI_MEMORY_RUNTIME))
+ EFI_MEMORY_RUNTIME | EFI_MEMORY_MORE_RELIABLE))
snprintf(pos, size, "|attr=0x%016llx]",
(unsigned long long)attr);
else
- snprintf(pos, size, "|%3s|%2s|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]",
+ snprintf(pos, size, "|%3s|%2s|%2s|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]",
attr & EFI_MEMORY_RUNTIME ? "RUN" : "",
+ attr & EFI_MEMORY_MORE_RELIABLE ? "MR" : "",
attr & EFI_MEMORY_XP ? "XP" : "",
attr & EFI_MEMORY_RP ? "RP" : "",
attr & EFI_MEMORY_WP ? "WP" : "",
diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
index a5b95d61ae71..22c5285f7705 100644
--- a/drivers/firmware/efi/esrt.c
+++ b/drivers/firmware/efi/esrt.c
@@ -20,7 +20,6 @@
#include <linux/kobject.h>
#include <linux/list.h>
#include <linux/memblock.h>
-#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
@@ -450,22 +449,10 @@ err:
esrt = NULL;
return error;
}
+device_initcall(esrt_sysfs_init);
-static void __exit esrt_sysfs_exit(void)
-{
- pr_debug("esrt-sysfs: unloading.\n");
- cleanup_entry_list();
- kset_unregister(esrt_kset);
- sysfs_remove_group(esrt_kobj, &esrt_attr_group);
- kfree(esrt);
- esrt = NULL;
- kobject_del(esrt_kobj);
- kobject_put(esrt_kobj);
-}
-
-module_init(esrt_sysfs_init);
-module_exit(esrt_sysfs_exit);
-
+/*
MODULE_AUTHOR("Peter Jones <pjones@redhat.com>");
MODULE_DESCRIPTION("EFI System Resource Table support");
MODULE_LICENSE("GPL");
+*/
diff --git a/drivers/firmware/efi/fake_mem.c b/drivers/firmware/efi/fake_mem.c
new file mode 100644
index 000000000000..32bcb14df2c8
--- /dev/null
+++ b/drivers/firmware/efi/fake_mem.c
@@ -0,0 +1,238 @@
+/*
+ * fake_mem.c
+ *
+ * Copyright (C) 2015 FUJITSU LIMITED
+ * Author: Taku Izumi <izumi.taku@jp.fujitsu.com>
+ *
+ * This code introduces new boot option named "efi_fake_mem"
+ * By specifying this parameter, you can add arbitrary attribute to
+ * specific memory range by updating original (firmware provided) EFI
+ * memmap.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#include <linux/kernel.h>
+#include <linux/efi.h>
+#include <linux/init.h>
+#include <linux/memblock.h>
+#include <linux/types.h>
+#include <linux/sort.h>
+#include <asm/efi.h>
+
+#define EFI_MAX_FAKEMEM CONFIG_EFI_MAX_FAKE_MEM
+
+struct fake_mem {
+ struct range range;
+ u64 attribute;
+};
+static struct fake_mem fake_mems[EFI_MAX_FAKEMEM];
+static int nr_fake_mem;
+
+static int __init cmp_fake_mem(const void *x1, const void *x2)
+{
+ const struct fake_mem *m1 = x1;
+ const struct fake_mem *m2 = x2;
+
+ if (m1->range.start < m2->range.start)
+ return -1;
+ if (m1->range.start > m2->range.start)
+ return 1;
+ return 0;
+}
+
+void __init efi_fake_memmap(void)
+{
+ u64 start, end, m_start, m_end, m_attr;
+ int new_nr_map = memmap.nr_map;
+ efi_memory_desc_t *md;
+ u64 new_memmap_phy;
+ void *new_memmap;
+ void *old, *new;
+ int i;
+
+ if (!nr_fake_mem || !efi_enabled(EFI_MEMMAP))
+ return;
+
+ /* count up the number of EFI memory descriptor */
+ for (old = memmap.map; old < memmap.map_end; old += memmap.desc_size) {
+ md = old;
+ start = md->phys_addr;
+ end = start + (md->num_pages << EFI_PAGE_SHIFT) - 1;
+
+ for (i = 0; i < nr_fake_mem; i++) {
+ /* modifying range */
+ m_start = fake_mems[i].range.start;
+ m_end = fake_mems[i].range.end;
+
+ if (m_start <= start) {
+ /* split into 2 parts */
+ if (start < m_end && m_end < end)
+ new_nr_map++;
+ }
+ if (start < m_start && m_start < end) {
+ /* split into 3 parts */
+ if (m_end < end)
+ new_nr_map += 2;
+ /* split into 2 parts */
+ if (end <= m_end)
+ new_nr_map++;
+ }
+ }
+ }
+
+ /* allocate memory for new EFI memmap */
+ new_memmap_phy = memblock_alloc(memmap.desc_size * new_nr_map,
+ PAGE_SIZE);
+ if (!new_memmap_phy)
+ return;
+
+ /* create new EFI memmap */
+ new_memmap = early_memremap(new_memmap_phy,
+ memmap.desc_size * new_nr_map);
+ if (!new_memmap) {
+ memblock_free(new_memmap_phy, memmap.desc_size * new_nr_map);
+ return;
+ }
+
+ for (old = memmap.map, new = new_memmap;
+ old < memmap.map_end;
+ old += memmap.desc_size, new += memmap.desc_size) {
+
+ /* copy original EFI memory descriptor */
+ memcpy(new, old, memmap.desc_size);
+ md = new;
+ start = md->phys_addr;
+ end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1;
+
+ for (i = 0; i < nr_fake_mem; i++) {
+ /* modifying range */
+ m_start = fake_mems[i].range.start;
+ m_end = fake_mems[i].range.end;
+ m_attr = fake_mems[i].attribute;
+
+ if (m_start <= start && end <= m_end)
+ md->attribute |= m_attr;
+
+ if (m_start <= start &&
+ (start < m_end && m_end < end)) {
+ /* first part */
+ md->attribute |= m_attr;
+ md->num_pages = (m_end - md->phys_addr + 1) >>
+ EFI_PAGE_SHIFT;
+ /* latter part */
+ new += memmap.desc_size;
+ memcpy(new, old, memmap.desc_size);
+ md = new;
+ md->phys_addr = m_end + 1;
+ md->num_pages = (end - md->phys_addr + 1) >>
+ EFI_PAGE_SHIFT;
+ }
+
+ if ((start < m_start && m_start < end) && m_end < end) {
+ /* first part */
+ md->num_pages = (m_start - md->phys_addr) >>
+ EFI_PAGE_SHIFT;
+ /* middle part */
+ new += memmap.desc_size;
+ memcpy(new, old, memmap.desc_size);
+ md = new;
+ md->attribute |= m_attr;
+ md->phys_addr = m_start;
+ md->num_pages = (m_end - m_start + 1) >>
+ EFI_PAGE_SHIFT;
+ /* last part */
+ new += memmap.desc_size;
+ memcpy(new, old, memmap.desc_size);
+ md = new;
+ md->phys_addr = m_end + 1;
+ md->num_pages = (end - m_end) >>
+ EFI_PAGE_SHIFT;
+ }
+
+ if ((start < m_start && m_start < end) &&
+ (end <= m_end)) {
+ /* first part */
+ md->num_pages = (m_start - md->phys_addr) >>
+ EFI_PAGE_SHIFT;
+ /* latter part */
+ new += memmap.desc_size;
+ memcpy(new, old, memmap.desc_size);
+ md = new;
+ md->phys_addr = m_start;
+ md->num_pages = (end - md->phys_addr + 1) >>
+ EFI_PAGE_SHIFT;
+ md->attribute |= m_attr;
+ }
+ }
+ }
+
+ /* swap into new EFI memmap */
+ efi_unmap_memmap();
+ memmap.map = new_memmap;
+ memmap.phys_map = (void *)new_memmap_phy;
+ memmap.nr_map = new_nr_map;
+ memmap.map_end = memmap.map + memmap.nr_map * memmap.desc_size;
+ set_bit(EFI_MEMMAP, &efi.flags);
+
+ /* print new EFI memmap */
+ efi_print_memmap();
+}
+
+static int __init setup_fake_mem(char *p)
+{
+ u64 start = 0, mem_size = 0, attribute = 0;
+ int i;
+
+ if (!p)
+ return -EINVAL;
+
+ while (*p != '\0') {
+ mem_size = memparse(p, &p);
+ if (*p == '@')
+ start = memparse(p+1, &p);
+ else
+ break;
+
+ if (*p == ':')
+ attribute = simple_strtoull(p+1, &p, 0);
+ else
+ break;
+
+ if (nr_fake_mem >= EFI_MAX_FAKEMEM)
+ break;
+
+ fake_mems[nr_fake_mem].range.start = start;
+ fake_mems[nr_fake_mem].range.end = start + mem_size - 1;
+ fake_mems[nr_fake_mem].attribute = attribute;
+ nr_fake_mem++;
+
+ if (*p == ',')
+ p++;
+ }
+
+ sort(fake_mems, nr_fake_mem, sizeof(struct fake_mem),
+ cmp_fake_mem, NULL);
+
+ for (i = 0; i < nr_fake_mem; i++)
+ pr_info("efi_fake_mem: add attr=0x%016llx to [mem 0x%016llx-0x%016llx]",
+ fake_mems[i].attribute, fake_mems[i].range.start,
+ fake_mems[i].range.end);
+
+ return *p == '\0' ? 0 : -EINVAL;
+}
+
+early_param("efi_fake_mem", setup_fake_mem);
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 4bfff349b1fb..95d293b7445a 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -114,6 +114,20 @@ static int efifb_setup(char *options)
return 0;
}
+static inline bool fb_base_is_valid(void)
+{
+ if (screen_info.lfb_base)
+ return true;
+
+ if (!(screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE))
+ return false;
+
+ if (screen_info.ext_lfb_base)
+ return true;
+
+ return false;
+}
+
static int efifb_probe(struct platform_device *dev)
{
struct fb_info *info;
@@ -141,7 +155,7 @@ static int efifb_probe(struct platform_device *dev)
screen_info.lfb_depth = 32;
if (!screen_info.pages)
screen_info.pages = 1;
- if (!screen_info.lfb_base) {
+ if (!fb_base_is_valid()) {
printk(KERN_DEBUG "efifb: invalid framebuffer address\n");
return -ENODEV;
}
@@ -160,6 +174,14 @@ static int efifb_probe(struct platform_device *dev)
}
efifb_fix.smem_start = screen_info.lfb_base;
+
+ if (screen_info.capabilities & VIDEO_CAPABILITY_64BIT_BASE) {
+ u64 ext_lfb_base;
+
+ ext_lfb_base = (u64)(unsigned long)screen_info.ext_lfb_base << 32;
+ efifb_fix.smem_start |= ext_lfb_base;
+ }
+
efifb_defined.bits_per_pixel = screen_info.lfb_depth;
efifb_defined.xres = screen_info.lfb_width;
efifb_defined.yres = screen_info.lfb_height;
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 26ca9e2fd30e..4d01c1033fce 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -596,6 +596,9 @@ void efi_native_runtime_setup(void);
#define DEVICE_TREE_GUID \
EFI_GUID( 0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
+#define EFI_PROPERTIES_TABLE_GUID \
+ EFI_GUID( 0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5 )
+
typedef struct {
efi_guid_t guid;
u64 table;
@@ -809,6 +812,15 @@ typedef struct _efi_file_io_interface {
#define EFI_FILE_MODE_WRITE 0x0000000000000002
#define EFI_FILE_MODE_CREATE 0x8000000000000000
+typedef struct {
+ u32 version;
+ u32 length;
+ u64 memory_protection_attribute;
+} efi_properties_table_t;
+
+#define EFI_PROPERTIES_TABLE_VERSION 0x00010000
+#define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
+
#define EFI_INVALID_TABLE_ADDR (~0UL)
/*
@@ -831,6 +843,7 @@ extern struct efi {
unsigned long runtime; /* runtime table */
unsigned long config_table; /* config tables */
unsigned long esrt; /* ESRT table */
+ unsigned long properties_table; /* properties table */
efi_get_time_t *get_time;
efi_set_time_t *set_time;
efi_get_wakeup_time_t *get_wakeup_time;
@@ -902,13 +915,19 @@ extern void efi_initialize_iomem_resources(struct resource *code_resource,
struct resource *data_resource, struct resource *bss_resource);
extern void efi_get_time(struct timespec *now);
extern void efi_reserve_boot_services(void);
-extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose);
+extern int efi_get_fdt_params(struct efi_fdt_params *params);
extern struct efi_memory_map memmap;
extern struct kobject *efi_kobj;
extern int efi_reboot_quirk_mode;
extern bool efi_poweroff_required(void);
+#ifdef CONFIG_EFI_FAKE_MEMMAP
+extern void __init efi_fake_memmap(void);
+#else
+static inline void efi_fake_memmap(void) { }
+#endif
+
/* Iterate through an efi_memory_map */
#define for_each_efi_memory_desc(m, md) \
for ((md) = (m)->map; \
@@ -960,6 +979,7 @@ extern int __init efi_setup_pcdp_console(char *);
#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
#define EFI_ARCH_1 7 /* First arch-specific bit */
#define EFI_DBG 8 /* Print additional debug info at runtime */
+#define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
#ifdef CONFIG_EFI
/*
diff --git a/include/uapi/linux/screen_info.h b/include/uapi/linux/screen_info.h
index 7530e7447620..8b8d39dfb67f 100644
--- a/include/uapi/linux/screen_info.h
+++ b/include/uapi/linux/screen_info.h
@@ -43,7 +43,8 @@ struct screen_info {
__u16 pages; /* 0x32 */
__u16 vesa_attributes; /* 0x34 */
__u32 capabilities; /* 0x36 */
- __u8 _reserved[6]; /* 0x3a */
+ __u32 ext_lfb_base; /* 0x3a */
+ __u8 _reserved[2]; /* 0x3e */
} __attribute__((packed));
#define VIDEO_TYPE_MDA 0x10 /* Monochrome Text Display */
@@ -69,6 +70,6 @@ struct screen_info {
#define VIDEO_FLAGS_NOCURSOR (1 << 0) /* The video mode has no cursor set */
#define VIDEO_CAPABILITY_SKIP_QUIRKS (1 << 0)
-
+#define VIDEO_CAPABILITY_64BIT_BASE (1 << 1) /* Frame buffer base is 64-bit */
#endif /* _UAPI_SCREEN_INFO_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-13 15:57:46 +0000