forked from pool/grub2
21 lines
938 B
Diff
21 lines
938 B
Diff
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Index: grub-2.02~rc1/grub-core/loader/i386/efi/linux.c
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===================================================================
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--- grub-2.02~rc1.orig/grub-core/loader/i386/efi/linux.c
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+++ grub-2.02~rc1/grub-core/loader/i386/efi/linux.c
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@@ -324,7 +324,14 @@ grub_cmd_linux (grub_command_t cmd __att
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lh.code32_start = (grub_uint32_t)(grub_addr_t) kernel_mem;
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}
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- grub_memcpy(params, &lh, 2 * 512);
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+ /* Grub linuxefi erroneously initialize linux's boot_params with non-zero values. (bsc#1025563)
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+
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+ From https://www.kernel.org/doc/Documentation/x86/boot.txt:
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+ The memory for struct boot_params could be allocated anywhere (even above 4G)
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+ and initialized to all zero.
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+ Then, the setup header at offset 0x01f1 of kernel image on should be
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+ loaded into struct boot_params and examined. */
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+ grub_memcpy (¶ms->setup_sects, &lh.setup_sects, sizeof (lh) - 0x01f1);
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params->type_of_loader = 0x21;
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