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Update ESRT to fix rhbz#1207742

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This should correctly map the memory tables when we iterate them.

Signed-off-by: Peter Jones <pjones@redhat.com>
This commit is contained in:
Peter Jones 2015-03-31 16:51:30 -04:00
parent 8a2fdf2bb5
commit 5fd2f45801
1 changed files with 40 additions and 23 deletions
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63
efi-Add-esrt-support.patch
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@ -1,3 +1,4 @@
From 47a69c76881e80f353676a3fde1d668adf894eb3 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Tue, 18 Nov 2014 10:18:22 -0500
Subject: [PATCH] efi: Add esrt support.
@ -28,16 +29,16 @@ Signed-off-by: Peter Jones <pjones@redhat.com>
Documentation/ABI/testing/sysfs-firmware-efi-esrt | 81 ++++
arch/x86/platform/efi/efi.c | 2 +
drivers/firmware/efi/Makefile | 2 +-
drivers/firmware/efi/efi.c | 66 ++-
drivers/firmware/efi/efi.c | 82 +++-
drivers/firmware/efi/esrt.c | 464 ++++++++++++++++++++++
include/linux/efi.h | 8 +
6 files changed, 621 insertions(+), 2 deletions(-)
6 files changed, 637 insertions(+), 2 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-firmware-efi-esrt
create mode 100644 drivers/firmware/efi/esrt.c
diff --git a/Documentation/ABI/testing/sysfs-firmware-efi-esrt b/Documentation/ABI/testing/sysfs-firmware-efi-esrt
new file mode 100644
index 000000000000..6e431d1a4e79
index 0000000..6e431d1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-firmware-efi-esrt
@@ -0,0 +1,81 @@
@ -123,7 +124,7 @@ index 000000000000..6e431d1a4e79
+ 6 - Battery power event
+
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index dbc8627a5cdf..b4c9fbbc9270 100644
index dbc8627..b4c9fbb 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -492,6 +492,8 @@ void __init efi_init(void)
@ -136,7 +137,7 @@ index dbc8627a5cdf..b4c9fbbc9270 100644
void __init efi_late_init(void)
diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile
index d8be608a9f3b..26eabbc55341 100644
index d8be608..26eabbc 100644
--- a/drivers/firmware/efi/Makefile
+++ b/drivers/firmware/efi/Makefile
@@ -1,7 +1,7 @@
@ -149,7 +150,7 @@ index d8be608a9f3b..26eabbc55341 100644
obj-$(CONFIG_EFI_VARS_PSTORE) += efi-pstore.o
obj-$(CONFIG_UEFI_CPER) += cper.o
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 3061bb8629dc..e54ea20dfb42 100644
index 3061bb8..48b4c35 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -39,6 +39,7 @@ struct efi __read_mostly efi = {
@ -169,7 +170,7 @@ index 3061bb8629dc..e54ea20dfb42 100644
static struct kobject *efivars_kobj;
/*
@@ -232,6 +233,68 @@ err_put:
@@ -232,6 +233,84 @@ err_put:
subsys_initcall(efisubsys_init);
@ -204,23 +205,39 @@ index 3061bb8629dc..e54ea20dfb42 100644
+
+ e = map->phys_map + map->nr_map * map->desc_size;
+ for (p = map->phys_map; p < e; p += map->desc_size) {
+ efi_memory_desc_t *md;
+ u64 size;
+ u64 end;
+
+ /*
+ * If a driver calls this after efi_free_boot_services,
+ * ->map will be NULL.
+ * ->map will be NULL, and the target may also not be mapped.
+ * So just always get our own virtual map on the CPU.
+ *
+ */
+ efi_memory_desc_t *md = phys_to_virt((phys_addr_t)p);
+ u64 size = md->num_pages << EFI_PAGE_SHIFT;
+ u64 end = md->phys_addr + size;
+ md = early_memremap((phys_addr_t)p, sizeof (*md));
+ if (!md) {
+ pr_err_once("early_memremap(%p, %zu) failed.\n",
+ p, sizeof (*md));
+ return -ENOMEM;
+ }
+
+ if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
+ md->type != EFI_BOOT_SERVICES_DATA &&
+ md->type != EFI_RUNTIME_SERVICES_DATA)
+ md->type != EFI_RUNTIME_SERVICES_DATA) {
+ early_memunmap(md, sizeof (*md));
+ continue;
+ }
+
+ size = md->num_pages << EFI_PAGE_SHIFT;
+ end = md->phys_addr + size;
+ if (phys_addr >= md->phys_addr && phys_addr < end) {
+ memcpy(out_md, md, sizeof(*out_md));
+ early_memunmap(md, sizeof (*md));
+ return 0;
+ }
+
+ early_memunmap(md, sizeof (*md));
+ }
+ pr_err_once("requested map not found.\n");
+ return -ENOENT;
@ -238,7 +255,7 @@ index 3061bb8629dc..e54ea20dfb42 100644
/*
* We can't ioremap data in EFI boot services RAM, because we've already mapped
@@ -274,6 +337,7 @@ static __initdata efi_config_table_type_t common_tables[] = {
@@ -274,6 +353,7 @@ static __initdata efi_config_table_type_t common_tables[] = {
{SMBIOS_TABLE_GUID, "SMBIOS", &efi.smbios},
{SMBIOS3_TABLE_GUID, "SMBIOS 3.0", &efi.smbios3},
{UGA_IO_PROTOCOL_GUID, "UGA", &efi.uga},
@ -248,7 +265,7 @@ index 3061bb8629dc..e54ea20dfb42 100644
diff --git a/drivers/firmware/efi/esrt.c b/drivers/firmware/efi/esrt.c
new file mode 100644
index 000000000000..20c0cbdb1c60
index 0000000..20c0cbd
--- /dev/null
+++ b/drivers/firmware/efi/esrt.c
@@ -0,0 +1,464 @@
@ -717,20 +734,20 @@ index 000000000000..20c0cbdb1c60
+MODULE_DESCRIPTION("EFI System Resource Table support");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 470e8dfcb517..ed0d0c09d45c 100644
index cf7e431..bb12adf 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -589,6 +589,9 @@ void efi_native_runtime_setup(void);
#define DEVICE_TREE_GUID \
EFI_GUID( 0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
@@ -583,6 +583,9 @@ void efi_native_runtime_setup(void);
#define EFI_FILE_INFO_ID \
EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
+#define EFI_SYSTEM_RESOURCE_TABLE_GUID \
+ EFI_GUID( 0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 )
+
#define EFI_CERT_SHA256_GUID \
EFI_GUID( 0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28 )
#define EFI_FILE_SYSTEM_GUID \
EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
@@ -849,6 +852,7 @@ extern struct efi {
@@ -823,6 +826,7 @@ extern struct efi {
unsigned long fw_vendor; /* fw_vendor */
unsigned long runtime; /* runtime table */
unsigned long config_table; /* config tables */
@ -738,7 +755,7 @@ index 470e8dfcb517..ed0d0c09d45c 100644
efi_get_time_t *get_time;
efi_set_time_t *set_time;
efi_get_wakeup_time_t *get_wakeup_time;
@@ -901,6 +905,7 @@ static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned lon
@@ -875,6 +879,7 @@ static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned lon
#endif
extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
extern int efi_config_init(efi_config_table_type_t *arch_tables);
@ -746,7 +763,7 @@ index 470e8dfcb517..ed0d0c09d45c 100644
extern int efi_config_parse_tables(void *config_tables, int count, int sz,
efi_config_table_type_t *arch_tables);
extern u64 efi_get_iobase (void);
@@ -908,12 +913,15 @@ extern u32 efi_mem_type (unsigned long phys_addr);
@@ -882,12 +887,15 @@ extern u32 efi_mem_type (unsigned long phys_addr);
extern u64 efi_mem_attributes (unsigned long phys_addr);
extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
extern int __init efi_uart_console_only (void);