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History log of /src/sys/arch/i386/stand/efiboot/efiboot.c
RevisionDateAuthorComments
 1.13  20-Apr-2023  manu Add reloc keyworkd to let EFI bootstrap load amd64 kernel at any address

EFI bootstrap assumes it can copy the amd64 kernel to its ELF load
address (that is KERNTEXTOFF - KERNBASE = 0x200000), but it can
clash with previous UEFI memory allocation, as described here:
http://mail-index.netbsd.org/tech-kern/2023/04/07/msg028833.html

This change adds a reloc keyword for controling where the EFI
boostrap will copy the kernel image. Possible values are:
default - the default and prior behavior, copy at 0x200000.
none - do not copy and use the kernel image where it was loaded.
address - specify an explicit address where to copy the kernel.

This comes with an amd64 kernel patch that makes it self-relocatable.
It first discover where it was loaded in memory, and if this is
different than the expected 0x200000, hhe the kernel relocates
itself and start over at the right address.
 1.12  09-Feb-2020  jmcneill branches: 1.12.24;
Do not clear the screen before exiting boot services as this may cause an
undesired display mode switch. PR# 54615
 1.11  13-Sep-2019  manu branches: 1.11.2;
Add multiboot 2 support to x86 bootloaders

multiboot 2 is required to boot Xen on an EFI system.
This also require a kernel patch for properly discovering
the ACPI RSDP, which is available after 20190912, in
src/sys/arch/x86/acpi/acpi_machdep.c 1.26-1.28

There are a few missing bit in this multiboot 2 implementation
(which are unused by Xen):
- Header tags Address, Freambuffer, and Relocatable are ignored
- Tags APM and Network are not provided
- Tags ACPI old and ACP new are only provided for ACPI boot
- Tag boot device does not provides the subpart (BSD disklabel partition)

Notes:
- multiboot2 is disabled in dosboot, otherwise the binary
gets too big and build fails.
- in src/sys/arch/i386/stand/efiboot, consinit() is renamed
as efi_consinit() to avoid prototype conflicts in src/sys/sys/systm.h
 1.10  29-Jul-2019  nonaka branches: 1.10.2;
Added missing efi_memory_probe() call.
 1.9  29-Jul-2019  nonaka Added BTINFO_EFIMEMMAP compaction support to x86 efiboot.
 1.8  08-Jun-2018  nonaka branches: 1.8.2;
Remove unused include.
 1.7  11-Apr-2018  nonaka efiboot: Added network boot support.
 1.6  27-Mar-2018  nonaka efiboot: Added serial console support.
 1.5  08-Mar-2018  nonaka efiboot: system can boot from CD/DVD-ROM media.
 1.4  11-Feb-2017  nonaka branches: 1.4.2; 1.4.6; 1.4.10; 1.4.16; 1.4.18;
PR/51953: fix unable to boot on some AMD machine.

Delayed the timing to copy the kernel to actual address.
copy routine from common/lib/libc/arch/x86_64/string/bcopy.S
 1.3  11-Feb-2017  nonaka efiboot: don't call WaitForSingleEvent after ExitBootServices is called.
 1.2  11-Feb-2017  nonaka efiboot: pass memory map after ExitBootService is called to kernel.
 1.1  24-Jan-2017  nonaka branches: 1.1.2;
Initial commit of native amd64 EFI boot loader.
 1.1.2.3  28-Aug-2017  skrll Sync with HEAD
 1.1.2.2  05-Feb-2017  skrll Sync with HEAD
 1.1.2.1  24-Jan-2017  skrll file efiboot.c was added on branch nick-nhusb on 2017-02-05 13:40:12 +0000
 1.4.18.4  25-Jun-2018  pgoyette Sync with HEAD
 1.4.18.3  16-Apr-2018  pgoyette Sync with HEAD, resolve some conflicts
 1.4.18.2  30-Mar-2018  pgoyette Resolve conflicts between branch and HEAD
 1.4.18.1  15-Mar-2018  pgoyette Synch with HEAD
 1.4.16.2  03-Dec-2017  jdolecek update from HEAD
 1.4.16.1  11-Feb-2017  jdolecek file efiboot.c was added on branch tls-maxphys on 2017-12-03 11:36:18 +0000
 1.4.10.6  10-Feb-2020  martin Pull up following revision(s) (requested by nonaka in ticket #1499):

sys/arch/i386/stand/efiboot/efiboot.c: revision 1.12

Do not clear the screen before exiting boot services as this may cause an
undesired display mode switch. PR# 54615
 1.4.10.5  18-Sep-2019  martin Pull up following revision(s) [adapted, via patch]
(requested by manu in ticket #1382):

sys/arch/i386/include/multiboot2.h: revision 1.1
sys/arch/i386/stand/lib/exec.c: revision 1.74
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.11
sys/arch/i386/stand/efiboot/bootia32/multiboot32.S: revision 1.1
sys/arch/i386/stand/lib/biosdisk.c: revision 1.52
sys/arch/i386/stand/efiboot/bootx64/efibootx64.c: revision 1.5
distrib/sets/lists/comp/md.amd64: revision 1.273
sys/arch/i386/stand/efiboot/eficons.c: revision 1.7
sys/arch/i386/stand/efiboot/bootia32/efibootia32.c: revision 1.5
distrib/sets/lists/comp/md.i386: revision 1.191
sys/arch/i386/stand/lib/libi386.h: revision 1.45
sys/arch/i386/stand/lib/bootinfo_memmap.c: revision 1.6
sys/arch/i386/stand/lib/pread.c: revision 1.8
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.10
sys/arch/i386/stand/efiboot/bootia32/Makefile: revision 1.3
sys/arch/i386/stand/lib/Makefile: revision 1.47
sys/arch/i386/stand/efiboot/bootx64/Makefile: revision 1.2
sys/arch/i386/stand/lib/multiboot.S: revision 1.3
sys/arch/i386/stand/efiboot/bootx64/multiboot64.S: revision 1.1
sys/arch/i386/stand/efiboot/efimemory.c: revision 1.9
sys/arch/i386/stand/efiboot/boot.c: revision 1.16
sys/arch/i386/include/Makefile: revision 1.50
sys/arch/i386/stand/efiboot/Makefile.efiboot: revision 1.16
share/man/man8/man8.x86/boot.8: revision 1.20
sys/arch/i386/stand/boot/Makefile.boot: revision 1.73
sys/arch/i386/stand/pxeboot/Makefile: revision 1.26
sys/arch/i386/stand/lib/exec_multiboot1.c: revision 1.1
sys/arch/i386/stand/netboot/Makefile.netboot: revision 1.11
sys/arch/i386/stand/lib/exec_multiboot2.c: revision 1.1
sys/arch/i386/stand/lib/biosdisk.h: revision 1.12
sys/arch/i386/stand/lib/exec_multiboot2.c: revision 1.2
sys/arch/i386/stand/dosboot/Makefile: revision 1.32
sys/external/bsd/gnu-efi/dist/inc/efiapi.h (apply patch)

Add multiboot 2 support to x86 bootloaders

multiboot 2 is required to boot Xen on an EFI system.

This also require a kernel patch for properly discovering
the ACPI RSDP, which is available after 20190912, in
src/sys/arch/x86/acpi/acpi_machdep.c 1.26-1.28

There are a few missing bit in this multiboot 2 implementation
(which are unused by Xen):
- Header tags Address, Freambuffer, and Relocatable are ignored
- Tags APM and Network are not provided
- Tags ACPI old and ACP new are only provided for ACPI boot
- Tag boot device does not provides the subpart (BSD disklabel partition)

Notes:
- multiboot2 is disabled in dosboot, otherwise the binary
gets too big and build fails.
- in src/sys/arch/i386/stand/efiboot, consinit() is renamed
as efi_consinit() to avoid prototype conflicts in src/sys/sys/systm.h

Remove debug define.

It remained there unseen because it was misspelled!

Remove obsoeolete BUGS note that UEFI bootloader does not support multiboot

Add new multiboot2.h header.
 1.4.10.4  01-Aug-2019  martin Pull up following revision(s) (requested by nonaka in ticket #1309):

sys/arch/i386/stand/lib/exec.c: revision 1.73
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.10
sys/arch/i386/stand/lib/libi386.h: revision 1.44
sys/arch/i386/stand/efiboot/efimemory.c: revision 1.6
sys/arch/i386/stand/efiboot/efimemory.c: revision 1.7
sys/arch/i386/stand/efiboot/efimemory.c: revision 1.8
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.9
sys/arch/i386/stand/efiboot/boot.c: revision 1.12
sys/arch/i386/stand/efiboot/boot.c: revision 1.13
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.9
sys/arch/i386/stand/efiboot/Makefile.efiboot: revision 1.15
sys/arch/i386/stand/efiboot/dev_net.c: revision 1.2

Added tftp support to x86 efiboot.

Pre-allocate memory for the kernel space at startup.

Added BTINFO_EFIMEMMAP compaction support to x86 efiboot.

Sync the output of memmap command to the output of stand/efiboot mem command.

Added missing efi_memory_probe() call.
 1.4.10.3  11-Apr-2018  martin Pull up following revision(s) (requested by nonaka in ticket #739):

sys/arch/i386/stand/efiboot/efinet.h: revision 1.1
sys/arch/i386/stand/efiboot/efinet.c: revision 1.1
sys/arch/i386/stand/efiboot/conf.c: revision 1.2
sys/arch/i386/stand/efiboot/devopen.c: revision 1.5
sys/arch/i386/stand/efiboot/efidisk.c: revision 1.6
sys/arch/i386/stand/efiboot/devopen.h: revision 1.3
sys/arch/i386/stand/efiboot/efipxe.c: revision 1.1
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.7
sys/arch/i386/stand/efiboot/boot.c: revision 1.10
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.8
sys/arch/i386/stand/efiboot/Makefile.efiboot: revision 1.12
sys/arch/i386/stand/efiboot/dev_net.c: revision 1.1

efiboot: Added network boot support.
 1.4.10.2  02-Apr-2018  martin Pull up following revision(s) (requested by nonaka in ticket #685):

sys/arch/i386/stand/efiboot/efidisk.c: revision 1.4
sys/arch/i386/stand/efiboot/bootx64/efibootx64.c: revision 1.4
sys/arch/i386/stand/efiboot/eficons.c: revision 1.5
sys/arch/i386/stand/efiboot/efichar.c: revision 1.1
sys/arch/i386/stand/efiboot/bootia32/efibootia32.c: revision 1.4
sys/arch/i386/stand/efiboot/boot.c: revision 1.8
sys/arch/i386/stand/efiboot/efimemory.c: revision 1.5
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.6
sys/arch/i386/stand/efiboot/efidelay.c: revision 1.2
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.7
sys/arch/i386/stand/efiboot/Makefile.efiboot: revision 1.11

efiboot: Added serial console support.
 1.4.10.1  13-Mar-2018  martin Pull up following revision(s) (requested by nonaka in ticket #625):
sys/arch/i386/stand/efiboot/efidisk.c: revision 1.2
sys/arch/i386/stand/efiboot/devopen.c: revision 1.2
sys/arch/i386/stand/efiboot/efidisk.h: revision 1.2
sys/arch/i386/stand/efiboot/boot.c: revision 1.6
sys/arch/i386/stand/efiboot/efidisk_ll.c: revision 1.2
sys/arch/i386/stand/efiboot/efidev.c: revision 1.1
sys/arch/i386/stand/lib/biosdisk_ll.h: revision 1.16
sys/arch/i386/stand/lib/biosdisk.h: revision 1.9
sys/lib/libsa/cd9660.c: revision 1.31
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.5
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.6
sys/arch/i386/stand/lib/biosdisk.c: revision 1.47
sys/arch/i386/stand/efiboot/Makefile.efiboot: revision 1.10
sys/arch/i386/stand/efiboot/TODO.efiboot: revision 1.4
efiboot: system can boot from CD/DVD-ROM media.

Add missed file in previous commit.
 1.4.6.2  11-Feb-2017  nonaka 1673251
 1.4.6.1  11-Feb-2017  nonaka file efiboot.c was added on branch bouyer-socketcan on 2017-02-11 10:23:40 +0000
 1.4.2.2  20-Mar-2017  pgoyette Sync with HEAD
 1.4.2.1  11-Feb-2017  pgoyette file efiboot.c was added on branch pgoyette-localcount on 2017-03-20 06:57:15 +0000
 1.8.2.2  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.8.2.1  08-Apr-2020  martin Merge changes from current as of 20200406
 1.10.2.3  13-May-2023  martin Pull up following revision(s) (requested by manu in ticket #1632):

share/man/man8/man8.x86/boot.8: revision 1.27
sys/arch/i386/stand/efiboot/version: revision 1.3
share/man/man8/man8.x86/boot.8: revision 1.28 (via patch)
share/man/man8/man8.x86/boot.8: revision 1.29 (via patch)
sys/arch/i386/stand/lib/exec.c: revision 1.79
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.13
sys/arch/i386/stand/efiboot/bootx64/efibootx64.c: revision 1.6
sys/arch/i386/stand/efiboot/bootia32/efibootia32.c: revision 1.6
sys/arch/i386/stand/efiboot/boot.c: revision 1.22
sys/arch/amd64/amd64/locore.S: revision 1.219
sys/arch/i386/stand/efiboot/bootia32/startprog32.S: revision 1.3
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.12
sys/arch/amd64/conf/files.amd64: revision 1.121
sys/arch/amd64/conf/std.amd64: revision 1.13
share/man/man8/man8.x86/pxeboot.8: revision 1.6
sys/arch/i386/stand/efiboot/bootx64/startprog64.S: revision 1.4
sys/arch/amd64/amd64/locore.S: revision 1.220
share/man/man8/man8.x86/dosboot.8: revision 1.4
share/man/man4/options.4: revision 1.524

Add reloc keyworkd to let EFI bootstrap load amd64 kernel at any address

EFI bootstrap assumes it can copy the amd64 kernel to its ELF load
address (that is KERNTEXTOFF - KERNBASE = 0x200000), but it can
clash with previous UEFI memory allocation, as described here:
http://mail-index.netbsd.org/tech-kern/2023/04/07/msg028833.html

This change adds a reloc keyword for controling where the EFI
boostrap will copy the kernel image. Possible values are:
default - the default and prior behavior, copy at 0x200000.
none - do not copy and use the kernel image where it was loaded.
address - specify an explicit address where to copy the kernel.

This comes with an amd64 kernel patch that makes it self-relocatable.
It first discover where it was loaded in memory, and if this is
different than the expected 0x200000, hhe the kernel relocates
itself and start over at the right address.

Merge x86 boot options in x86/boot(8) and add undocumented UEFI options

We were supposed to keep the option list in x86/boot(8), x86/dosoot(8)
and x86/pxeboot(8) in sync, but it did not happen, hence it may work
better with all the options in x86/boot(8). Also add the undocumented
UEFI boot options.

Add a SELFRELOC kernel option for the sake of documentation clarity.
Instead of telling that x86/boot(8) reloc command needs a kernel able
to self relocate, we can tell it needs a kernel built with the
SELFRELOC option. This keeps the reader from wondering what could
make a kernel able to self relocate.

Remove XXX todo marker left by mistake

Raise the version for new feature (here reloc command)
Suggested by Masanobu SAITOH
 1.10.2.2  10-Feb-2020  martin Pull up following revision(s) (requested by jmcneill in ticket #686):

sys/arch/i386/stand/efiboot/efiboot.c: revision 1.12

Do not clear the screen before exiting boot services as this may cause an
undesired display mode switch. PR# 54615
 1.10.2.1  17-Sep-2019  martin Pull up following revision(s) (requested by manu in ticket #203):

sys/arch/i386/include/multiboot2.h: revision 1.1
sys/arch/i386/stand/lib/exec.c: revision 1.74
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.11
sys/arch/i386/stand/efiboot/bootia32/multiboot32.S: revision 1.1
sys/arch/i386/stand/lib/biosdisk.c: revision 1.52
sys/arch/i386/stand/efiboot/bootx64/efibootx64.c: revision 1.5
sys/arch/i386/stand/efiboot/eficons.c: revision 1.7
sys/arch/i386/stand/efiboot/bootia32/efibootia32.c: revision 1.5
sys/arch/i386/stand/lib/libi386.h: revision 1.45
sys/arch/i386/stand/lib/bootinfo_memmap.c: revision 1.6
sys/arch/i386/stand/lib/pread.c: revision 1.8
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.10
sys/arch/i386/stand/efiboot/bootia32/Makefile: revision 1.3
sys/arch/i386/stand/lib/Makefile: revision 1.47
sys/arch/i386/stand/efiboot/bootx64/Makefile: revision 1.2
sys/arch/i386/stand/lib/multiboot.S: revision 1.3
sys/arch/i386/stand/efiboot/bootx64/multiboot64.S: revision 1.1
sys/arch/i386/stand/efiboot/efimemory.c: revision 1.9
sys/arch/i386/stand/efiboot/boot.c: revision 1.16
sys/arch/i386/include/Makefile: revision 1.50
sys/arch/i386/stand/efiboot/Makefile.efiboot: revision 1.16
share/man/man8/man8.x86/boot.8: revision 1.20
sys/arch/i386/stand/boot/Makefile.boot: revision 1.73
sys/arch/i386/stand/pxeboot/Makefile: revision 1.26
sys/arch/i386/stand/lib/exec_multiboot1.c: revision 1.1
sys/arch/i386/stand/netboot/Makefile.netboot: revision 1.11
sys/arch/i386/stand/lib/exec_multiboot2.c: revision 1.1
sys/arch/i386/stand/lib/biosdisk.h: revision 1.12
sys/arch/i386/stand/lib/exec_multiboot2.c: revision 1.2
sys/arch/i386/stand/dosboot/Makefile: revision 1.32

Add multiboot 2 support to x86 bootloaders

multiboot 2 is required to boot Xen on an EFI system.

This also require a kernel patch for properly discovering
the ACPI RSDP, which is available after 20190912, in
src/sys/arch/x86/acpi/acpi_machdep.c 1.26-1.28

There are a few missing bit in this multiboot 2 implementation
(which are unused by Xen):
- Header tags Address, Freambuffer, and Relocatable are ignored
- Tags APM and Network are not provided
- Tags ACPI old and ACP new are only provided for ACPI boot
- Tag boot device does not provides the subpart (BSD disklabel partition)
Notes:
- multiboot2 is disabled in dosboot, otherwise the binary
gets too big and build fails.
- in src/sys/arch/i386/stand/efiboot, consinit() is renamed
as efi_consinit() to avoid prototype conflicts in src/sys/sys/systm.h

Remove debug define.

It remained there unseen because it was misspelled!

Remove obsoeolete BUGS note that UEFI bootloader does not support multiboot
 1.11.2.1  29-Feb-2020  ad Sync with head.
 1.12.24.1  13-May-2023  martin Pull up following revision(s) (requested by manu in ticket #159):

share/man/man8/man8.x86/boot.8: revision 1.27
sys/arch/i386/stand/efiboot/version: revision 1.3
share/man/man8/man8.x86/boot.8: revision 1.28
share/man/man8/man8.x86/boot.8: revision 1.29
sys/arch/i386/stand/lib/exec.c: revision 1.79
sys/arch/i386/stand/efiboot/efiboot.c: revision 1.13
sys/arch/i386/stand/efiboot/bootx64/efibootx64.c: revision 1.6
sys/arch/i386/stand/efiboot/bootia32/efibootia32.c: revision 1.6
sys/arch/i386/stand/efiboot/boot.c: revision 1.22
sys/arch/amd64/amd64/locore.S: revision 1.219
sys/arch/i386/stand/efiboot/bootia32/startprog32.S: revision 1.3
sys/arch/i386/stand/efiboot/efiboot.h: revision 1.12
sys/arch/amd64/conf/files.amd64: revision 1.121
sys/arch/amd64/conf/std.amd64: revision 1.13
share/man/man8/man8.x86/pxeboot.8: revision 1.6
sys/arch/i386/stand/efiboot/bootx64/startprog64.S: revision 1.4
sys/arch/amd64/amd64/locore.S: revision 1.220
share/man/man8/man8.x86/dosboot.8: revision 1.4
share/man/man4/options.4: revision 1.524

Add reloc keyworkd to let EFI bootstrap load amd64 kernel at any address

EFI bootstrap assumes it can copy the amd64 kernel to its ELF load
address (that is KERNTEXTOFF - KERNBASE = 0x200000), but it can
clash with previous UEFI memory allocation, as described here:
http://mail-index.netbsd.org/tech-kern/2023/04/07/msg028833.html

This change adds a reloc keyword for controling where the EFI
boostrap will copy the kernel image. Possible values are:
default - the default and prior behavior, copy at 0x200000.
none - do not copy and use the kernel image where it was loaded.
address - specify an explicit address where to copy the kernel.

This comes with an amd64 kernel patch that makes it self-relocatable.
It first discover where it was loaded in memory, and if this is
different than the expected 0x200000, hhe the kernel relocates
itself and start over at the right address.


Merge x86 boot options in x86/boot(8) and add undocumented UEFI options

We were supposed to keep the option list in x86/boot(8), x86/dosoot(8)
and x86/pxeboot(8) in sync, but it did not happen, hence it may work
better with all the options in x86/boot(8). Also add the undocumented
UEFI boot options.


Add a SELFRELOC kernel option for the sake of documentation clarity.
Instead of telling that x86/boot(8) reloc command needs a kernel able
to self relocate, we can tell it needs a kernel built with the
SELFRELOC option. This keeps the reader from wondering what could
make a kernel able to self relocate.

Remove XXX todo marker left by mistake

Raise the version for new feature (here reloc command)
Suggested by Masanobu SAITOH

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