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release 3.7

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https://sourceforge.net/projects/elilo/files/elilo/3.7/
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Stephane Eranian 2007-07-20 09:30:47 -04:00 • committed by Vincent Batts
parent 64cdcfed2c
commit 97b2a7df25
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34
README.gnu-efi
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@ -1,5 +1,6 @@
IMPORTANT Information related to the gnu-efi package
and x86_64 efi support
----------------------------------------------------
August 2003
@ -12,6 +13,10 @@ As of version elilo-3.0, the gnu-efi package is now split in two different packa
Note that X.y don't need to match for both packages. However elilo-3.x requires at
least gnu-efi >= 3.0. When using a version of gcc >3.0 you MUST use at least gnu-efi-3.0a.
Note that EFI support for x86_64 has been added as a patch to gnu-efi-3.0c.
For x86_64, see the important notes under x86_64.
IMPORTANT NOTE FOR IA-32:
-------------------------
For IA-32, the Redhat 8.0 toolchain is known to produce
@ -29,3 +34,32 @@ IMPORTANT NOTE FOR IA-32:
The gnu-efi package can be downloaded from:
ftp://ftp.hpl.hp.com/pub/linux-ia64/gnu-efi-X.y.tar.gz
IMPORTANT NOTE FOR x86_64:
-------------------------
EFI x86_64 elilo support requires the following libraries:
1. gnu-efi-3.0c library with x86_64 support.
2. The toolchain known to produce working x86_64 efi binary are:
gcc-4.1.1 or above
binutils-2.17.50.0.14 with Intel64 EFI support
Implementation:
--------------
Calls to EFI services in x86_64 require a wrapper to pass the arguments
in the appropriate manner. This is implemented with efi wrapper.
For IA32 and IA64, the wrapper is a macro that merely calls the
EFI services directly. The elilo source has been modified to use the
efi wrapper implemented in gnu-efi-3.0c library.
elilo for x86_64 and its dependent libraries are built and the final
ELF image is converted into PE-COFF image using the objcopy supported
by binutils-2.17.50.0.14 or above with Intel64 EFI support.
On UEFI 2.0 firmware, only Graphics Output Protocol (GOP) is supported.
The x86_64 elilo first queries video information from GOP failing which
it queries for text mode support. The video information is passed to
Linux kernel via boot parameter. The GOP support requires
Linux kernel EFI framebuffer driver (kernel configuration option).