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82 lines
2.7 KiB
82 lines
2.7 KiB
From 22a8b7bb4c77ba1ef1833e0dae052c108180250f Mon Sep 17 00:00:00 2001 |
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From: Vladimir Serbinenko <phcoder@gmail.com> |
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Date: Fri, 28 Feb 2014 09:47:57 +0100 |
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Subject: [PATCH 061/237] * grub-core/kern/i386/coreboot/mmap.c: Filter out |
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0xa0000-0x100000 region. |
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--- |
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ChangeLog | 5 +++++ |
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grub-core/kern/i386/coreboot/mmap.c | 38 +++++++++++++++++++++++++++++++------ |
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2 files changed, 37 insertions(+), 6 deletions(-) |
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diff --git a/ChangeLog b/ChangeLog |
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index be41aa5..4f6f6d6 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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+2014-02-28 Vladimir Serbinenko <phcoder@gmail.com> |
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+ |
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+ * grub-core/kern/i386/coreboot/mmap.c: Filter out 0xa0000-0x100000 |
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+ region. |
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+ |
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2014-02-20 Vladimir Serbinenko <phcoder@gmail.com> |
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* grub-core/disk/ahci.c: Ignore NPORTS field and rely on PI |
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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 1197975..4d29f6b 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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@@ -44,18 +44,44 @@ iterate_linuxbios_table (grub_linuxbios_table_item_t table_item, void *data) |
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mem_region = |
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(mem_region_t) ((long) table_item + |
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sizeof (struct grub_linuxbios_table_item)); |
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- while ((long) mem_region < (long) table_item + (long) table_item->size) |
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+ for (; (long) mem_region < (long) table_item + (long) table_item->size; |
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+ mem_region++) |
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{ |
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- if (ctx->hook (mem_region->addr, mem_region->size, |
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+ grub_uint64_t start = mem_region->addr; |
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+ grub_uint64_t end = mem_region->addr + mem_region->size; |
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+ /* Mark region 0xa0000 - 0x100000 as reserved. */ |
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+ if (start < 0x100000 && end >= 0xa0000 |
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+ && mem_region->type == GRUB_MACHINE_MEMORY_AVAILABLE) |
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+ { |
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+ if (start < 0xa0000 |
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+ && ctx->hook (start, 0xa0000 - start, |
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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, |
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+ ctx->hook_data)) |
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+ return 1; |
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+ if (start < 0xa0000) |
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+ start = 0xa0000; |
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+ if (start >= end) |
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+ continue; |
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+ |
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+ if (ctx->hook (start, (end > 0x100000 ? 0x100000 : end) - start, |
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+ GRUB_MEMORY_RESERVED, |
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+ ctx->hook_data)) |
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+ return 1; |
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+ start = 0x100000; |
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+ |
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+ if (end <= start) |
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+ continue; |
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+ } |
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+ if (ctx->hook (start, end - start, |
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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 <= 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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+ mem_region->type, |
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ctx->hook_data)) |
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return 1; |
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- |
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- mem_region++; |
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} |
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return 0; |
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-- |
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2.9.3 |
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