On Wed, Feb 05, 2014 at 03:45:36PM -0600, Alex Thorlton wrote:
> While working on an answer to this question, I ran across another issue
> on some newer hardware, that looks like it's definitely related to this
> problem, and might be the root cause.
>
> When booting on a UV2 we die in efi_enter_v
On Fri, Jan 31, 2014 at 03:23:18PM +0100, Borislav Petkov wrote:
> And now my question:
>
> How can I reliably find out which region contains that
> uv_systab.function call?
>
> I need it so that I can map it in the EFI page table and you can
> continue to call that function and you can get back
On 5 February 2014 18:04, Leif Lindholm wrote:
> From: Ard Biesheuvel
>
> Loading unauthenticated FDT blobs directly from storage is a security hazard,
> so this should only be allowed when running with UEFI Secure Boot disabled.
>
> Signed-off-by: Ard Biesheuvel
> Signed-off-by: Leif Lindholm
On Wed, Feb 05, 2014 at 05:03:53PM +, Leif Lindholm wrote:
> A new macro for setting/clearing bits in the SCTLR.
>
> Signed-off-by: Leif Lindholm
> Suggested-by: Will Deacon
> Cc: Will Deacon
> ---
> arch/arm/include/asm/assembler.h | 14 ++
> 1 file changed, 14 insertions(+)
On Wed, 2014-02-05 at 17:03 +, Leif Lindholm wrote:
> From: Roy Franz
>
> Add a wrapper for printk to standardize the prefix for informational and
> error messages from the EFI stub.
trivia:
> diff --git a/drivers/firmware/efi/efi-stub-helper.c
> b/drivers/firmware/efi/efi-stub-helper.c
[]
This patch implements basic support for UEFI runtime services in the
ARM architecture - a requirement for using efibootmgr to read and update
the system boot configuration.
It uses the generic configuration table scanning to populate ACPI and
SMBIOS pointers.
Changes since v2:
- Updated FDT bindi
From: Roy Franz
Both ARM and ARM64 stubs will update the device tree that they pass to
the kernel. In both cases they primarily need to add the same UEFI
related information, so the function can be shared. Create a new FDT
related file for this to avoid use of architecture #ifdefs in
efi-stub-h
Certain operations can be considered mandatory for any piece of code
preparing to switch off the MMU. Break this out into separate function
idmap_prepare().
Signed-off-by: Leif Lindholm
Suggested-by: Will Deacon
Acked-by: Will Deacon
---
arch/arm/include/asm/idmap.h |1 +
arch/arm/kernel/p
From: Mark Salter
ARM and ARM64 architectures use the device tree to pass UEFI parameters
from stub to kernel. These parameters are things known to the stub but
not discoverable by the kernel after the stub calls ExitBootSerives().
There is a helper function in:
drivers/firmware/efi/fdt.c
wh
From: Roy Franz
Add a wrapper for printk to standardize the prefix for informational and
error messages from the EFI stub.
Signed-off-by: Roy Franz
Signed-off-by: Leif Lindholm
---
drivers/firmware/efi/efi-stub-helper.c | 25 ++---
1 file changed, 14 insertions(+), 11 de
From: Roy Franz
Update efi-stub.txt documentation to be more general
and not x86 specific. Add ARM only "dtb=" command
line option description.
Signed-off-by: Roy Franz
Signed-off-by: Leif Lindholm
Acked-by: Grant Likely
---
Documentation/efi-stub.txt | 27 ---
1 f
A new macro for setting/clearing bits in the SCTLR.
Signed-off-by: Leif Lindholm
Suggested-by: Will Deacon
Cc: Will Deacon
---
arch/arm/include/asm/assembler.h | 14 ++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assemble
From: Roy Franz
Add the get_dram_base() function and efi_call_physN() macros
that are shared by arm/arm64.
Signed-off-by: Roy Franz
Signed-off-by: Leif Lindholm
---
drivers/firmware/efi/efi-stub-helper.c | 63 +---
1 file changed, 50 insertions(+), 13 deletions(-
From: Mark Salter
This patch adds PE/COFF header fields to the start of the Image
so that it appears as an EFI application to EFI firmware. An EFI
stub is included to allow direct booting of the kernel Image.
Support in the COFF header for signed images was provided by
Ard Biesheuvel.
Signed-off
From: Roy Franz
The shared efi-stub-helper.c functions require a strstr implementation.
The EFI stub is part of the decompressor, so it does not use the kernel
strstr() implementation. This patch adds a strstr() implementation to
the string.c file for the decompressor, with the implementation co
From: Roy Franz
This patch adds the EFI stub entry point that is shared
by the arm/arm64 architectures. Each arch will implement
the handle_kernel_image() function that handles the arch
specific load address and boot protocol requirements.
Signed-off-by: Roy Franz
Signed-off-by: Leif Lindholm
Since the efi_set_virtual_address_map call has strict init ordering
requirements, add an explicit hook in the required place.
Signed-off-by: Leif Lindholm
Acked-by: Grant Likely
---
init/main.c |4
1 file changed, 4 insertions(+)
diff --git a/init/main.c b/init/main.c
index 2fd9cef..0
From: Mark Salter
At boot time, before switching to a virtual UEFI memory map, firmware
expects UEFI memory and IO regions to be identity mapped whenever
kernel makes runtime services calls. The exisitng early boot code
creates an identity map of kernel text/data but this is not sufficient
for UE
From: Roy Franz
The ARM decompressor/EFI stub do not implement the functions
(__stack_chk_guard_setup, etc) that are required for support of
stack protection. The actual enablement of stack protection is
controlled by heuristics in GCC, which the code added for the EFI
stub triggers when CONFIG_
This patch provides documentation of the [U]EFI runtime service and
configuration features for the arm architecture.
Changes since v1/v2:
- Complete rewrite.
- New FDT bindings.
Cc: Rob Landley
Cc: linux-...@vger.kernel.org
Signed-off-by: Leif Lindholm
Signed-off-by: Leif Lindholm
Acked-by: G
From: Roy Franz
This patch adds EFI stub support for the ARM Linux kernel. The EFI stub
operates similarly to the x86 stub: it is a shim between the EFI firmware
and the normal zImage entry point, and sets up the environment that the
zImage is expecting. This includes loading the initrd (option
From: Mark Salter
CONFIG_LIBFDT support does not include fdt_empty_tree.c which is
needed by arm64 EFI stub. Add it to libfdt_files.
Signed-off-by: Mark Salter
Signed-off-by: Leif Lindholm
---
lib/Makefile |3 ++-
lib/fdt_empty_tree.c |2 ++
2 files changed, 4 insertions(+), 1
Add bswapsdi2.S, fdt_empty_tree.c and fdt_sw.c to ignore list.
Signed-off-by: Leif Lindholm
---
arch/arm/boot/compressed/.gitignore |3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/boot/compressed/.gitignore
b/arch/arm/boot/compressed/.gitignore
index 47279aa..cc3487e 100644
-
From: Ard Biesheuvel
Loading unauthenticated FDT blobs directly from storage is a security hazard,
so this should only be allowed when running with UEFI Secure Boot disabled.
Signed-off-by: Ard Biesheuvel
Signed-off-by: Leif Lindholm
---
drivers/firmware/efi/arm-stub.c|4 +++-
dri
From: "H. Peter Anvin"
Improve the conversion of the UTF-16 EFI command line
to UTF-8 for passing to the kernel.
Signed-off-by: Roy Franz
Signed-off-by: H. Peter Anvin
Signed-off-by: Leif Lindholm
---
arch/x86/boot/compressed/eboot.c |3 +-
drivers/firmware/efi/arm-stub.c|
This is a combined set of patches for the arm and arm64 kernel
support for UEFI firmware.
The set depends on the following prerequisite sets:
- Laura Abbott's 'Remove ARM meminfo'
- Matt Fleming's 'Move facility flags to struct efi'
- Mark Salter's 'Generic fixmap'
- Mark Salter's 'Generic early
From: Mark Salter
This patch adds EFI runtime support for arm64. The runtime support allows
the kernel to access various EFI runtime services provided by EFI firmware.
Things like reboot, real time clock, EFI boot variables, and others.
Signed-off-by: Mark Salter
Signed-off-by: Leif Lindholm
-
From: Mark Salter
Add explanation of arm64 EFI stub and kernel image header changes
needed to masquerade as a PE/COFF application.
Signed-off-by: Mark Salter
Signed-off-by: Leif Lindholm
Acked-by: Grant Likely
CC: linux-...@vger.kernel.org
CC: Rob Landley
---
Documentation/arm64/booting.txt
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