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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Robert Elliott <elliott@hpe.com>
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Date: Thu, 3 Dec 2015 11:38:36 -0600
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Subject: [PATCH] Translate UEFI persistent memory type
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Define
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* GRUB_EFI_PERSISTENT_MEMORY (UEFI memory map type 14) per UEFI 2.5
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* GRUB_MEMORY_PERSISTENT (E820 type 7) per ACPI 3.0
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* GRUB_MEMORY_PERSISTENT_LEGACY (E820 unofficial type 12) per ACPI 3.0
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and translate GRUB_EFI_PERSISTENT_MEMORY to GRUB_MEMORY_PERSISTENT in
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grub_efi_mmap_iterate().
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Includes
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* adding the E820 names to lsmmap
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* handling the E820 types in make_efi_memtype()
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Suggested-by: Vladimir 'φ-coder/phcoder' Serbinenko <phcoder@gmail.com>
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Suggested-by: Andrei Borzenkov <arvidjaar@gmail.com>
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(cherry picked from commit 76ce1de740f202985ffd7b2e980cf34c75a2dac3)
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Resolves: rhbz#1288608
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---
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grub-core/commands/lsmmap.c | 2 ++
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grub-core/mmap/efi/mmap.c | 12 ++++++++++++
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include/grub/efi/api.h | 1 +
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include/grub/memory.h | 2 ++
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4 files changed, 17 insertions(+)
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diff --git a/grub-core/commands/lsmmap.c b/grub-core/commands/lsmmap.c
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index 4b504fd28f8..816ee47d1ed 100644
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--- a/grub-core/commands/lsmmap.c
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+++ b/grub-core/commands/lsmmap.c
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@@ -37,6 +37,8 @@ static const char *names[] =
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is required to save accross hibernations. */
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[GRUB_MEMORY_NVS] = N_("ACPI non-volatile storage RAM"),
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[GRUB_MEMORY_BADRAM] = N_("faulty RAM (BadRAM)"),
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+ [GRUB_MEMORY_PERSISTENT] = N_("persistent RAM"),
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+ [GRUB_MEMORY_PERSISTENT_LEGACY] = N_("persistent RAM (legacy)"),
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[GRUB_MEMORY_COREBOOT_TABLES] = N_("RAM holding coreboot tables"),
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[GRUB_MEMORY_CODE] = N_("RAM holding firmware code")
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};
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diff --git a/grub-core/mmap/efi/mmap.c b/grub-core/mmap/efi/mmap.c
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index 900a4d6598c..bd495a18481 100644
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--- a/grub-core/mmap/efi/mmap.c
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+++ b/grub-core/mmap/efi/mmap.c
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@@ -118,6 +118,11 @@ grub_efi_mmap_iterate (grub_memory_hook_t hook, void *hook_data,
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GRUB_MEMORY_NVS, hook_data);
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break;
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+ case GRUB_EFI_PERSISTENT_MEMORY:
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+ hook (desc->physical_start, desc->num_pages * 4096,
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+ GRUB_MEMORY_PERSISTENT, hook_data);
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+ break;
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+
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default:
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grub_printf ("Unknown memory type %d, considering reserved\n",
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desc->type);
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@@ -147,6 +152,13 @@ make_efi_memtype (int type)
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/* No way to remove a chunk of memory from EFI mmap.
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So mark it as unusable. */
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case GRUB_MEMORY_HOLE:
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+ /*
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+ * AllocatePages() does not support GRUB_EFI_PERSISTENT_MEMORY,
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+ * so no translation for GRUB_MEMORY_PERSISTENT or
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+ * GRUB_MEMORY_PERSISTENT_LEGACY.
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+ */
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+ case GRUB_MEMORY_PERSISTENT:
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+ case GRUB_MEMORY_PERSISTENT_LEGACY:
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case GRUB_MEMORY_RESERVED:
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return GRUB_EFI_UNUSABLE_MEMORY;
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diff --git a/include/grub/efi/api.h b/include/grub/efi/api.h
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index 029ee92f5d0..551d93e50a3 100644
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--- a/include/grub/efi/api.h
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+++ b/include/grub/efi/api.h
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@@ -431,6 +431,7 @@ enum grub_efi_memory_type
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GRUB_EFI_MEMORY_MAPPED_IO,
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GRUB_EFI_MEMORY_MAPPED_IO_PORT_SPACE,
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GRUB_EFI_PAL_CODE,
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+ GRUB_EFI_PERSISTENT_MEMORY,
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GRUB_EFI_MAX_MEMORY_TYPE
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};
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typedef enum grub_efi_memory_type grub_efi_memory_type_t;
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diff --git a/include/grub/memory.h b/include/grub/memory.h
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index 083cfb6802e..6da114a1bdc 100644
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--- a/include/grub/memory.h
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+++ b/include/grub/memory.h
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@@ -30,6 +30,8 @@ typedef enum grub_memory_type
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GRUB_MEMORY_ACPI = 3,
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GRUB_MEMORY_NVS = 4,
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GRUB_MEMORY_BADRAM = 5,
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+ GRUB_MEMORY_PERSISTENT = 7,
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+ GRUB_MEMORY_PERSISTENT_LEGACY = 12,
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GRUB_MEMORY_COREBOOT_TABLES = 16,
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GRUB_MEMORY_CODE = 20,
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/* This one is special: it's used internally but is never reported
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