From: Simon Glass <sjg@chromium.org>
To: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>,
Bin Meng <bmeng.cn@gmail.com>, Tom Rini <trini@konsulko.com>,
Christian Melki <christian.melki@t2data.com>,
U-Boot Mailing List <u-boot@lists.denx.de>
Subject: Re: [PATCH 24/35] x86: Allow booting a kernel from the EFI app
Date: Thu, 9 Sep 2021 02:57:28 -0600 [thread overview]
Message-ID: <CAPnjgZ2jLecZOhejLJBjhJ=rzxy1-vXgumBktFfLJ0fA4DAypw@mail.gmail.com> (raw)
In-Reply-To: <2d41cecd-a8e9-51d9-6dbc-ac0edf8f1eb4@gmx.de>
Hi Heinrich,
On Wed, 8 Sept 2021 at 12:22, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
>
>
>
> On 9/8/21 3:33 PM, Simon Glass wrote:
> > At present this is disabled, but it should work so long as the kernel does
> > not need EFI services. Enable it and add a note about remaining work.
> >
> > Signed-off-by: Simon Glass <sjg@chromium.org>
> > ---
> >
> > arch/x86/lib/bootm.c | 11 +++++++----
> > 1 file changed, 7 insertions(+), 4 deletions(-)
> >
> > diff --git a/arch/x86/lib/bootm.c b/arch/x86/lib/bootm.c
> > index 733dd712570..ff0e9f6a085 100644
> > --- a/arch/x86/lib/bootm.c
> > +++ b/arch/x86/lib/bootm.c
> > @@ -179,10 +179,14 @@ int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit)
> > * U-Boot is setting them up that way for itself in
> > * arch/i386/cpu/cpu.c.
> > *
> > - * Note that we cannot currently boot a kernel while running as
> > - * an EFI application. Please use the payload option for that.
> > + * Note: this is incomplete for EFI kernels!
> > + *
> > + * This can boot a kernel while running as an EFI application,
> > + * but if the kernel requires EFI support then that support needs
> > + * to be enabled first (see EFI_LOADER). Also the EFI information
> > + * must enabled with setup_efi_info(). See setup_zimage() for
> > + * how this is done with the stub.
>
> Did you test launching an EFI application with EFI_LOADER from the EFI
> app? If you get it working, please provide a defconfig and a testcase
> that runs helloworld.efi.
No unfortunately that cannot be built at present. This is just for
kernels that don't use EFI_LOADER.
I am pretty sure it could be made to work, perhaps by passing the
original UEFI system table through to the kernel.
Regards,
Simon
next prev parent reply other threads:[~2021-09-09 8:59 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-08 13:33 [PATCH 00/35] efi: Improvements to U-Boot running on top of UEFI Simon Glass
2021-09-08 13:33 ` [PATCH 01/35] x86: Keep symbol information in u-boot ELF file Simon Glass
2021-09-08 13:33 ` [PATCH 02/35] x86: Create a new header for EFI Simon Glass
2021-09-08 17:22 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-09 9:25 ` Heinrich Schuchardt
2021-09-09 19:57 ` Simon Glass
2021-09-08 13:33 ` [PATCH 03/35] x86: Show some EFI info with the bdinfo command Simon Glass
2021-09-08 17:29 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-09 9:29 ` Heinrich Schuchardt
2021-09-09 20:08 ` Simon Glass
2021-09-08 13:33 ` [PATCH 04/35] x86: Tidy up global_data pointer for 64-bit Simon Glass
2021-09-08 17:30 ` Heinrich Schuchardt
2021-09-08 13:33 ` [PATCH 05/35] efi: Add a script for building and testing U-Boot on UEFI Simon Glass
2021-09-08 13:33 ` [PATCH 06/35] x86: Create a 32/64-bit selection for the app Simon Glass
2021-09-08 17:35 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-08 13:33 ` [PATCH 07/35] efi: Create a 64-bit app Simon Glass
2021-09-08 17:37 ` Heinrich Schuchardt
2021-09-08 13:33 ` [PATCH 08/35] x86: Don't duplicate global_ptr in 64-bit EFI app Simon Glass
2021-09-08 13:33 ` [PATCH 09/35] efi: Add a way to obtain boot services in the app Simon Glass
2021-09-08 13:33 ` [PATCH 10/35] efi: Add video support to " Simon Glass
2021-09-08 17:40 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-08 13:33 ` [PATCH 11/35] RFC: efi: Drop code that doesn't work with driver model Simon Glass
2021-09-08 17:44 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-09 9:21 ` Heinrich Schuchardt
2021-09-09 19:57 ` Simon Glass
2021-09-09 20:14 ` Tom Rini
2021-09-09 20:15 ` Mark Kettenis
2021-09-09 20:23 ` Tom Rini
2021-09-09 21:45 ` Mark Kettenis
2021-09-09 22:06 ` Tom Rini
2021-09-24 2:48 ` Simon Glass
2021-09-24 10:36 ` Mark Kettenis
2021-09-24 12:32 ` Simon Glass
2021-09-08 13:33 ` [PATCH 12/35] efi: Add EFI uclass for media Simon Glass
2021-09-08 17:50 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-08 13:33 ` [PATCH 13/35] efi: Add a media/block driver for EFI block devices Simon Glass
2021-09-08 17:59 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-09 10:35 ` Heinrich Schuchardt
2021-09-09 19:58 ` Simon Glass
2021-09-08 13:33 ` [PATCH 14/35] efi: Locate all block devices in the app Simon Glass
2021-09-08 18:14 ` Heinrich Schuchardt
2021-09-09 1:11 ` AKASHI Takahiro
2021-09-09 20:09 ` Simon Glass
2021-09-10 0:50 ` AKASHI Takahiro
2021-09-09 20:09 ` Simon Glass
2021-09-08 13:33 ` [PATCH 15/35] patman: Use a ValueError exception if tools.Run() fails Simon Glass
2021-09-08 13:33 ` [PATCH 16/35] binman: Report an error if test files fail to compile Simon Glass
2021-09-08 13:33 ` [PATCH 17/35] binman: Support reading the offset of an ELF-file symbol Simon Glass
2021-09-08 13:33 ` [PATCH 18/35] binman: Allow timeout to occur in the image or its section Simon Glass
2021-09-08 13:33 ` [PATCH 19/35] binman: Tidy up comments on _DoTestFile() Simon Glass
2021-09-08 13:33 ` [PATCH 20/35] binman: Support updating the dtb in an ELF file Simon Glass
2021-09-08 13:33 ` [PATCH 21/35] efi: serial: Support arrow keys Simon Glass
2021-09-08 13:33 ` [PATCH 22/35] bloblist: Move to rST format Simon Glass
2021-09-08 18:18 ` Heinrich Schuchardt
2021-09-08 13:33 ` [PATCH 23/35] bloblist: Support allocating the bloblist Simon Glass
2021-09-08 13:33 ` [PATCH 24/35] x86: Allow booting a kernel from the EFI app Simon Glass
2021-09-08 18:22 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass [this message]
2021-09-08 13:33 ` [PATCH 25/35] x86: Don't process the kernel command line unless enabled Simon Glass
2021-09-08 13:33 ` [PATCH 26/35] x86: efi: Add room for the binman definition in the dtb Simon Glass
2021-09-08 13:33 ` [PATCH 27/35] efi: Add comments to struct efi_priv Simon Glass
2021-09-08 13:33 ` [PATCH 28/35] efi: Fix ll_boot_init() operation with the app Simon Glass
2021-09-08 13:33 ` [PATCH 29/35] efi: Add a few comments to the stub Simon Glass
2021-09-08 13:34 ` [PATCH 30/35] efi: Share struct efi_priv between the app and stub code Simon Glass
2021-09-08 13:34 ` [PATCH 31/35] efi: Move exit_boot_services into a function Simon Glass
2021-09-08 13:34 ` [PATCH 32/35] efi: Check for failure when initing the app Simon Glass
2021-09-08 13:34 ` [PATCH 33/35] efi: Mention that efi_info_get() is only used in the stub Simon Glass
2021-09-08 13:34 ` [PATCH 34/35] efi: Show when allocated pages are used Simon Glass
2021-09-08 18:25 ` Heinrich Schuchardt
2021-09-09 8:57 ` Simon Glass
2021-09-09 10:39 ` Heinrich Schuchardt
2021-09-09 19:58 ` Simon Glass
2021-09-08 13:34 ` [PATCH 35/35] efi: Allow easy selection of serial-only operation Simon Glass
2021-09-09 16:29 ` [PATCH 00/35] efi: Improvements to U-Boot running on top of UEFI Bin Meng
2021-09-09 16:34 ` Tom Rini
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