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From 186c206f29e4ce0c6645c51dd477a8ce93952d51 Mon Sep 17 00:00:00 2001
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From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
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Date: Mon, 25 Mar 2013 10:23:04 +0100
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Subject: [PATCH 232/482] Replace the region at 0 from coreboot tables
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to available in BSD memory map.
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---
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ChangeLog | 5 +++++
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grub-core/commands/lsmmap.c | 1 +
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grub-core/kern/i386/coreboot/mmap.c | 6 +++++-
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grub-core/loader/i386/bsd.c | 13 +++++++++++--
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grub-core/mmap/mmap.c | 1 +
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include/grub/memory.h | 1 +
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6 files changed, 24 insertions(+), 3 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index 981991b..8425aff 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,8 @@
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+2013-03-25 Vladimir Serbinenko <phcoder@gmail.com>
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+
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+ Replace the region at 0 from coreboot tables to available in BSD
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+ memory map.
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+
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2013-03-24 Vladimir Serbinenko <phcoder@gmail.com>
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* util/grub.d/20_linux_xen.in: Automatically add no-real-mode edd=off on
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diff --git a/grub-core/commands/lsmmap.c b/grub-core/commands/lsmmap.c
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index c1a05d8..0d29855 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 +37,7 @@ 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_COREBOOT_TABLES] = N_("RAM holding coreboot tables"),
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[GRUB_MEMORY_CODE] = N_("RAM holding firmware code"),
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[GRUB_MEMORY_HOLE] = N_("Address range not associated with RAM")
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};
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diff --git a/grub-core/kern/i386/coreboot/mmap.c b/grub-core/kern/i386/coreboot/mmap.c
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index 6a14d29..0aade62 100644
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--- a/grub-core/kern/i386/coreboot/mmap.c
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+++ b/grub-core/kern/i386/coreboot/mmap.c
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@@ -86,6 +86,8 @@ struct grub_machine_mmap_iterate_ctx
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void *hook_data;
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};
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+#define GRUB_MACHINE_MEMORY_BADRAM 5
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+
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/* Helper for grub_machine_mmap_iterate. */
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static int
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iterate_linuxbios_table (grub_linuxbios_table_item_t table_item, void *data)
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@@ -105,7 +107,9 @@ iterate_linuxbios_table (grub_linuxbios_table_item_t table_item, void *data)
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/* Multiboot mmaps match with the coreboot mmap
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definition. Therefore, we can just pass type
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through. */
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- mem_region->type, ctx->hook_data))
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+ (((mem_region->type <= GRUB_MACHINE_MEMORY_BADRAM) && (mem_region->type >= GRUB_MACHINE_MEMORY_AVAILABLE))
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+ || mem_region->type == GRUB_MEMORY_COREBOOT_TABLES) ? mem_region->type : GRUB_MEMORY_RESERVED,
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+ ctx->hook_data))
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return 1;
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mem_region++;
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diff --git a/grub-core/loader/i386/bsd.c b/grub-core/loader/i386/bsd.c
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index e89ec26..5fe586f 100644
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--- a/grub-core/loader/i386/bsd.c
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+++ b/grub-core/loader/i386/bsd.c
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@@ -268,6 +268,7 @@ struct grub_e820_mmap
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#define GRUB_E820_ACPI 3
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#define GRUB_E820_NVS 4
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#define GRUB_E820_BADRAM 5
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+#define GRUB_E820_COREBOOT_TABLES 0x10
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/* Context for generate_e820_mmap. */
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struct generate_e820_mmap_ctx
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@@ -299,13 +300,21 @@ generate_e820_mmap_iter (grub_uint64_t addr, grub_uint64_t size,
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case GRUB_MEMORY_NVS:
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ctx->cur.type = GRUB_E820_NVS;
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break;
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-
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+ case GRUB_MEMORY_COREBOOT_TABLES:
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+ /* Nowadays the tables at 0 don't contain anything important but
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+ *BSD needs the memory at 0 for own needs.
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+ */
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+ if (addr == 0)
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+ ctx->cur.type = GRUB_E820_RAM;
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+ else
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+ ctx->cur.type = GRUB_E820_COREBOOT_TABLES;
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+ break;
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default:
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case GRUB_MEMORY_CODE:
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case GRUB_MEMORY_RESERVED:
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ctx->cur.type = GRUB_E820_RESERVED;
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break;
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- }
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+ }
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/* Merge regions if possible. */
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if (ctx->count && ctx->cur.type == ctx->prev.type
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diff --git a/grub-core/mmap/mmap.c b/grub-core/mmap/mmap.c
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index 40ffb2e..d8bd8d2 100644
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--- a/grub-core/mmap/mmap.c
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+++ b/grub-core/mmap/mmap.c
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@@ -47,6 +47,7 @@ static const int priority[] =
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[GRUB_MEMORY_AVAILABLE] = 1,
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[GRUB_MEMORY_RESERVED] = 3,
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[GRUB_MEMORY_ACPI] = 2,
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+ [GRUB_MEMORY_COREBOOT_TABLES] = 2,
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[GRUB_MEMORY_CODE] = 3,
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[GRUB_MEMORY_NVS] = 3,
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[GRUB_MEMORY_HOLE] = 4,
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diff --git a/include/grub/memory.h b/include/grub/memory.h
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index 3311fcb..0df8074 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 +30,7 @@ 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_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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by firmware. */
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--
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1.8.2.1
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