efi: Add definition of EFI_MEMORY_CPU_CRYPTO and ability to report it

Incorporate the definition of EFI_MEMORY_CPU_CRYPTO from the UEFI
specification v2.8, and wire it into our memory map dumping routine
as well.

To make a bit of space in the output buffer, which is provided by
the various callers, shorten the descriptive names of the memory
types.

Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 3aa07c3..ebb59e5 100644 (file)
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -714,7 +714,7 @@ void __init efi_systab_report_header(const efi_table_hdr_t *systab_hdr,
                vendor);
 }
 
-static __initdata char memory_type_name[][20] = {
+static __initdata char memory_type_name[][13] = {
        "Reserved",
        "Loader Code",
        "Loader Data",
@@ -722,14 +722,14 @@ static __initdata char memory_type_name[][20] = {
        "Boot Data",
        "Runtime Code",
        "Runtime Data",
-       "Conventional Memory",
-       "Unusable Memory",
-       "ACPI Reclaim Memory",
-       "ACPI Memory NVS",
-       "Memory Mapped I/O",
-       "MMIO Port Space",
+       "Conventional",
+       "Unusable",
+       "ACPI Reclaim",
+       "ACPI Mem NVS",
+       "MMIO",
+       "MMIO Port",
        "PAL Code",
-       "Persistent Memory",
+       "Persistent",
 };
 
 char * __init efi_md_typeattr_format(char *buf, size_t size,
@@ -756,26 +756,27 @@ 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_NV | EFI_MEMORY_SP |
+                    EFI_MEMORY_NV | EFI_MEMORY_SP | EFI_MEMORY_CPU_CRYPTO |
                     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|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]",
-                        attr & EFI_MEMORY_RUNTIME ? "RUN" : "",
-                        attr & EFI_MEMORY_MORE_RELIABLE ? "MR" : "",
-                        attr & EFI_MEMORY_SP      ? "SP"  : "",
-                        attr & EFI_MEMORY_NV      ? "NV"  : "",
-                        attr & EFI_MEMORY_XP      ? "XP"  : "",
-                        attr & EFI_MEMORY_RP      ? "RP"  : "",
-                        attr & EFI_MEMORY_WP      ? "WP"  : "",
-                        attr & EFI_MEMORY_RO      ? "RO"  : "",
-                        attr & EFI_MEMORY_UCE     ? "UCE" : "",
-                        attr & EFI_MEMORY_WB      ? "WB"  : "",
-                        attr & EFI_MEMORY_WT      ? "WT"  : "",
-                        attr & EFI_MEMORY_WC      ? "WC"  : "",
-                        attr & EFI_MEMORY_UC      ? "UC"  : "");
+                        "|%3s|%2s|%2s|%2s|%2s|%2s|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]",
+                        attr & EFI_MEMORY_RUNTIME              ? "RUN" : "",
+                        attr & EFI_MEMORY_MORE_RELIABLE        ? "MR"  : "",
+                        attr & EFI_MEMORY_CPU_CRYPTO           ? "CC"  : "",
+                        attr & EFI_MEMORY_SP                   ? "SP"  : "",
+                        attr & EFI_MEMORY_NV                   ? "NV"  : "",
+                        attr & EFI_MEMORY_XP                   ? "XP"  : "",
+                        attr & EFI_MEMORY_RP                   ? "RP"  : "",
+                        attr & EFI_MEMORY_WP                   ? "WP"  : "",
+                        attr & EFI_MEMORY_RO                   ? "RO"  : "",
+                        attr & EFI_MEMORY_UCE                  ? "UCE" : "",
+                        attr & EFI_MEMORY_WB                   ? "WB"  : "",
+                        attr & EFI_MEMORY_WT                   ? "WT"  : "",
+                        attr & EFI_MEMORY_WC                   ? "WC"  : "",
+                        attr & EFI_MEMORY_UC                   ? "UC"  : "");
        return buf;
 }
 

diff --git a/include/linux/efi.h b/include/linux/efi.h
index 73db1ae..f216c02 100644 (file)
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -122,6 +122,7 @@ typedef     struct {
                                ((u64)0x0000000000010000ULL)    /* higher reliability */
 #define EFI_MEMORY_RO          ((u64)0x0000000000020000ULL)    /* read-only */
 #define EFI_MEMORY_SP          ((u64)0x0000000000040000ULL)    /* soft reserved */
+#define EFI_MEMORY_CPU_CRYPTO  ((u64)0x0000000000080000ULL)    /* supports encryption */
 #define EFI_MEMORY_RUNTIME     ((u64)0x8000000000000000ULL)    /* range requires runtime mapping */
 #define EFI_MEMORY_DESCRIPTOR_VERSION  1