via xmodem to the DBGU port when the AT91 comes up in recovery mode.
The recovery loader will then load your program via xmodem into SDRAM
at 1MB which can do its things. It needs to be tweaked to the
specific board one is using, but it fits in < 1kB (all of Atmel's ARM
products have at least 8kb of SRAM that I can tell, so this should
work for them all).
Parts of this code were provided by Kwikbyte with copyright
specifically disclaimed. I heavily modified it to act as a recovery
loader (before it was a bootstrap loader) and to optimize for size
(before I started the size was closer to 8k).
Bootstrap loaders for SPI and IIC to follow.
Otherwise, we could match on a filename that had the wrong last character
(such as /boot/loaded instead of /boot/loader).
PR: kern/95625
Submitted by: Oliver Fromme <olli@secnetix.de>
MFC after: 1 month
controller to get ready (65K x ISA access time, visually around 1 second).
If we have wait more than that amount it's likely that the hardware is a
legacy-free one and simply doesn't have keyboard controller and doesn't
require enabling A20 at all.
This makes cdboot working for MacBook Pro with Boot Camp.
MFC after: 1 day
Use 'BOOT_SENSITIVE_INFO=YES' variable to turn them on.
- Use 'uint*_t' instead of 'u_int*_t', correct compilation warnings, and
update copyright while I am here.
when checking whether it's greater than a struct stat st_size in order
to also catch the case when st_size is -1. Previously this check didn't
trigger on sparc64 when st_size is -1 (as it's the case for a file on
a bzipfs, TFTP server etc.), causing the content of the linker hints
file to be copied to memory referenced by a null-pointer.
PR: 91231
MFC after: 1 week
3MB of physical memory for heap instead of range between 1MB and 4MB.
This makes this feature working with PAE and amd64 kernels, which are
loaded at 2MB. Teach i386_copyin() to avoid using range allocated by
heap in such case, so that it won't trash heap in the low memory
conditions.
This should make loading bzip2-compressed kernels/modules/mfs images
generally useable, so that re@ team is welcome to evaluate merits
of using this feature in the installation CDs.
Valuable suggestions by: jhb
provide enough room for decompression (up to 2.5MB is necessary). This
should be safe to do since we load i386 kernels after 8MB mark now, so
that 16MB is the minimum amount of RAM necessary to even boot FreeBSD.
This makes bzip2-support practically useable.
memory directly available to loader(8) and friends was limited to 640K on i386.
Those times have passed long time ago and now loader(8) can directly access
up to 4GB of RAM at least theoretically. At the same time, there are several
places where it's assumed that malloc() will only allocate memory within
first megabyte.
Remove that assumption by allocating appropriate bounce buffers for BIOS
calls on stack where necessary.
This allows using memory above first megabyte for heap if necessary.
means:
o Remove Elf64_Quarter,
o Redefine Elf64_Half to be 16-bit,
o Redefine Elf64_Word to be 32-bit,
o Add Elf64_Xword and Elf64_Sxword for 64-bit entities,
o Use Elf_Size in MI code to abstract the difference between
Elf32_Word and Elf64_Word.
o Add Elf_Ssize as the signed counterpart of Elf_Size.
MFC after: 2 weeks
devices can be opened multiple times simultaneously but we're
expected to be able to do so by the rest of the loader.
This fixes booting from disks attached to the on-board SCSI
controller of Sun Ultra 1 (previously this triggered a trap)
and probably also of AX1115 boards.
- While here, remove unused variables and add empty lines where
style(9) requires such.
Tested on: powerpc (grehan), sparc64
MFC after: 1 month
> Cause all flags passed by boot2 to set the respective loader(8)
> boot_* variable. The end effect is that all flags from boot2
> are now passed to the kernel.
the serial console speed (i386 and amd64 only). If the previous
stage boot loader requested a serial console (RB_SERIAL or RB_MULTIPLE)
then the default speed is determined from the current serial port
speed. Otherwise it is set to 9600 or the value of BOOT_COMCONSOLE_SPEED
at compile time.
This makes it possible to set the serial port speed once in
/boot.config and the setting will propagate to boot2, loader and
the kernel serial console.
/boot.config or on the "boot:" prompt line via a "-S<speed>" flag,
e.g. "-h -S19200". This adds about 50 bytes to the size of boot2
and required a few other small changes to limit the size impact.
This changes only affects boot2; there are further loader changes
to follow.
which serial device to use in that case respectively to not rely on
the OFW names of the input/output and stdin/stdout devices. Instead
check whether input and output refers to the same device and is of
type serial (uart(4) was already doing this) and for the fallback
to a serial console in case a keyboard is the selected input device
but unplugged do the same for stdin and stdout in case the input
device is nonexistent (PS/2 and USB keyboards) or has a 'keyboard'
property (RS232 keyboards). Additionally also check whether the OFW
did a fallback to a serial console in the same way in case the
output device is nonexistent. While at it save on some variables
and for sys/boot/sparc64/loader/metadata.c move the code in question
to a new function md_bootserial() so it can be kept in sync with
uart_cpu_getdev_console() more easily.
This fixes selecting a serial console and the appropriate device
when using a device path for the 'input-device' and 'output-device'
OFW environment variables instead of an alias for the serial device
to use or when using a screen alias that additionally denotes a
video mode (like e.g. 'screen:r1024x768x60') but no keyboard is
plugged in (amongst others). It also makes the code select a serial
console in case the OFW did the same due to a misconfiguration like
both 'input-device' and 'output-device' set to 'keyboard' or to a
nonexisting device (whether the OFW does a fallback to a serial
console in case of a misconfiguration or one ends up with just no
console at all highly depends on the OBP version however).
- Reduce the size of buffers that only ever need to hold the string
'serial' accordingly. Double the size of buffers that may need to
hold a device path as e.g. '/pci@8,700000/ebus@5/serial@1,400000:a'
exceeds 32 chars.
- Remove the package handle of the '/options' node from the argument
list of uart_cpu_getdev_dbgport() as it's unused there and future
use is also unlikely.
MFC after: 1 week
from OpenFirmware be 16 pages to avoid fragmentation in the list
of mappings returned when the kernel requests it in pmap_bootstrap.
This allows a static buffer to be used when obtaining the existing
mappings - very useful on the G5 when random physical pages can't
be grabbed because they can't be BAT-mapped.
MFC after: 3 days
variables to loader:
hint.smbios.0.enabled "YES" when SMBIOS is detected
hint.smbios.0.bios.vendor BIOS vendor
hint.smbios.0.bios.version BIOS version
hint.smbios.0.bios.reldate BIOS release date
hint.smbios.0.system.maker System manufacturer
hint.smbios.0.system.product System product name
hint.smbios.0.system.version System version number
hint.smbios.0.planar.maker Base board manufacturer
hint.smbios.0.planar.product Base board product name
hint.smbios.0.planar.version Base board version number
hint.smbios.0.chassis.maker Enclosure manufacturer
hint.smbios.0.chassis.version Enclosure version
These strings can be used to detect hardware quirks and to set appropriate
flags. For example, Compaq R3000 series and some HP laptops require
hint.atkbd.0.flags="0x9"
to boot. See amd64/67745 for more detail.
Note: Please do not abuse this feature to resolve general problem when it
can be fixed programmatically. This must be used as a last resort.
PR: kern/81449
Approved by: anholt (mentor)
and visible effect of the bug what that autoboot would boot a kernel
after only a couple of seconds had passed instead of waiting the
full 10 seconds it's supposed to wait by default.
Add my copyright notice, since one was missing and I reimplemented
the one and only function in this file.
MFC after: 1 week
- Teach the i386 and pc98 loaders to honor multiple console requests from
their respective boot2 binaries so that the same console(s) are used in
both boot2 and the loader.
- Since the kernel doesn't support multiple consoles, whichever console is
listed first is treated as the "primary" console and is passed to the
kernel in the boot_howto flags.
PR: kern/66425
Submitted by: Gavin Atkinson gavin at ury dot york dot ac dot uk
MFC after: 1 week
be assumed that modules are contiguous in memory (they're not)
so don't blindly __syncicache start/end. In fact, don't bother
syncing the icache for modules since the kernel will do it after
fixing up relocations.
This fixes the trap when loading modules at boot time.
Reported by: orlando at break dot net
user to interrupt autoboot process at all. Currently, even when
`autoboot_delay' is set to 0, loader(8) still allows autoboot process to be
interrupted by pressing any key on the console when the loader reads kernel
and modules from the disk. In some cases (i.e. untrusted environment) such
behaviour is highly indesirable and user should not be allowed to interfere
with the autoboot process at all.
Sponsored by: PBXpress Inc.
MFC after: 3 days
copying, rather than a page at a time. This was creating far
too many single-page mappings, and eventually OFW overflowed
some internal data structure and refused to map any more.
The new algorithm creates far less mappings and fixed a bug
where multiple mappings for the same page would be created.
'Twas known this was a problem, but only became urgent when the
install CD's mfs_root grew large enough to cause the overflow.
- Move MD files into <arch>/<arch>.
- Move bus dependent files into <arch>/<bus>.
Rename some files to more suitable names.
Repo-copied by: peter
Discussed with: imp
I think all we really need is -fno-sse2.
I really don't like cluttering up the compiler invocation,
but this bigger hammer will fix reported problems for now.
to stll be able to mount NFS root as prescribed by DCHP configuration. Since
pxeboot is using TFTP to get to the files, pxeboot can not rely on NFS to
provide it a root directory hande as a side effect. pxeboot has to make RPC
mount call itself.
place.
This moves the dependency on GCC's and other compiler's features into
the central sys/cdefs.h file, while the individual source files can
then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to
refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42.
By now, GCC and ICC (the Intel compiler) have been actively tested on
IA32 platforms by netchild. Extension to other compilers is supposed
to be possible, of course.
Submitted by: netchild
Reviewed by: various developers on arch@, some time ago
they would leave enough elements on the stack that if you escaped to the
loader prompt and then typed 'setenv', it would pull in all of the leaked
junk and cause an exception in the environment. There still seems to be
3 leaked elements, but they don't appear to be coming from this file.
changing the Makefile, fail the creation of loader.efi when there are
unresolved symbols in loader.sym. This avoids silently creating a
faulty EFI binary.
and assume that the BIOS has set it up for us. This allows folks with a
serial-aware BIOS to set the BIOS to speeds above 9600 and allow boot0 to
just use the existing settings.
- Purge some gratuitous cpp comments as per style(9).
Submitted by: Danny Braniss danny at cs dot huji dot ac dot il (1)
MFC after: 1 month
assembler to cpp(1) comment conversions. This allows btx to compile again
when BTX_SERIAL is defined.
Reported by: Danny Braniss danny at cs dot huji dot ac dot il
MFC after: 1 month
keyboards to work if no PS/2 keyboard is attached. The position in the
menu was chosen to avoid moving option 6 (loader prompt). This should
be a no-op on non-i386/amd64 machines.
after loading such a kernel, "module_path" will be set to
an insane value. Fixed example by providing an equivalent
setting. For the record, when automatically loading a
kernel (commands "boot" and "boot-conf"), the following is
tried, in this order:
path=/boot/${kernel} file=${bootfile}
path=/boot/${kernel} file=${kernel}
path=${kernel} file=${bootfile}
path=${kernel} file=${kernel}
path=${module_path} file=${kernel}
use <machine/efi.h> for the necessary definitions. This makes the EFI
code in sys/boot/efi totally unused, except for pure EFI loaders. As
such, maintenance and porting (to IA-32) of the EFI code is made as easy
as possible.
to 4.0 and RELENG_3), the BTX mini-kernel used paging rather than flat
mode and clients were limited to a virtual address space of 16 megabytes.
Because of this limitation, boot2 silently masked all physical addresses
in any binaries it loaded so that they were always loaded into the first
16 Meg. Since BTX no longer has this limitation (and hasn't for a long
time), remove the masking from boot2. This allows boot2 to load kernels
larger than about 12 to 14 meg (12 for non-PAE, 14 for PAE).
Submitted by: Sergey Lyubka devnull at uptsoft dot com
MFC after: 1 month
format modules, which are currently only used on the amd64 platform.
This initial implementation just parses enough of the module to
allow it to extract dependencies and load all the bits into the
right place in memory, so the kernel must still do the full relocation
and linking. The details of the loaded sections are passed to the
kernel by supplying a copy of the ELF section header table as module
metadata with the MODINFOMD_SHDR tag.
better relocation support for the amd64 and i386 platforms. This
should not result in any change in functionality, but moves a step
towards supporting the relocatable object file modules on amd64.
The same hack/trick as load_elf*.c uses is used here to simultaneously
support both elf32 and elf64 on amd64 and i386.
This way of operation is more robust than the "AI" used
before.
Add flags to mbr accessible from make.conf as BOOT_MBR_FLAGS.
Only one flag is defined now, "allow using packet mode", which
is 0x80 in accord with the rest of i386 boot code. The "packet"
flag is on by default.
PR: i386/70241
Submitted by: Valentin Nechayev <netch <@> netch.kiev.ua> (inital version)
Discussed with: jhb (by Valentin Nechayev)
Tested on: bochs (with EDD turned on or off by patching the BIOS), PCs
the flag, fall back to the old INT13/AH=02 function if that fails.
This way of operation is less likely to fail with modern BIOSes and
large disks of strange geometries.
PR: i386/70241
Submitted by: Valentin Nechayev <netch <@> netch.kiev.ua> (inital version)
Discussed with: jhb (by Valentin Nechayev)
Tested on: bochs (with EDD turned on or off by patching the BIOS), PCs
The whole problem seems to be size. Which is odd, because it is said
that size doesn't matter. Anyway... Add -Os to strategic places in the
makefile to have the final loader be as mall as possible. This seems
to be enough to make it work. For now... I think something is more
fundamentally wrong; or something more fundamental is wrong. Potato,
potaato.
The binutils 2.15 assembler now automaticly and non-optionally adds
the .eh_frame section for unwind information. This section appears
to wreck havoc to the final boot code. Fix this by using a special
linker script that discards the .eh_frame sections, but is otherwise
identical to the linker internal script used for -N.
Compiler used: gcc 3.3.5
Verified with: binutils 2.14 & binutils 2.15 (stock and in-tree)
Tested with: /boot/loader & /boot/netboot
changes to the ATA driver cause a kernel crash, no fault of the ATA
code. Work is in progress to add the necessary feature to the sparc64
kernel and this commit will be backed out when it is complete. This
bandaid is being put in mostly in the interests of getting the first
release snapshot done and out the door.
Tested on: Ultra-10 exhibiting the insta-panic.
MFC: Real Soon
will prepend the current kernel booting... This prevents a problem of
loading /boot/kernel's modules when a different kernel has no modules,
but you left your module_load="YES" in loader.conf...
Reviewed by: dcs (minus the help part)
have clear idea on boot2 BSS size and leaves portion of it not zeroed out.
btxcsu.s is in much better position for this job.
Obtained from: DragonflyBSD (with minor adjustments)
we construct the EFI image. It doesn't seem to actually end up
in the EFI image, AFAICT.
o Replace .quad, .long and .short with data8, data4 and data2 resp.
The former are gnuisms.
o Redefine _start_plabel as a data16 with @iplt(_start) as its
value. This is the preferred way to create user PLT entries.
