History log of /haiku/src/system/boot/platform/openfirmware/mmu.cpp
Revision Date Author Comments
# 185e6809 30-Dec-2020 PulkoMandy <pulkomandy@pulkomandy.tk>

sparc: Build fixes

- Wrong printf format in bootloader elf panic call
- Missing functions for sparc

Change-Id: I4715a8d6d3d864d379b8386dc3958e0a2c1962e7
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3571
Reviewed-by: waddlesplash <waddlesplash@gmail.com>


# 6f6d78e8 25-Jun-2012 Alex Smith <alex@alex-smith.me.uk>

Cleaned up ELF64 address handling.

* platform_allocate_elf_region() is removed, it is implemented in platform-
independent code now (ELF*Class::AllocateRegion). For ELF64 it is now
assumed that 64-bit addresses are mapped in the loader's 32-bit address space
as (address - KERNEL_BASE_64BIT + KERNEL_BASE).
* mapped_delta field from preloaded_*_image removed, now handled compile-time
using the ELF*Class::Map method.
* Also link the kernel with -z max-page-size=0x1000, removes the need for
2MB alignment on the data segment (not going to map the kernel with large
pages for the time being).


# 88461898 24-Jun-2012 Alex Smith <alex@alex-smith.me.uk>

Handle 64-bit load addresses for ELF64 images in the bootloader.

The ELF loader now uses a new platform function, platform_allocate_elf_region,
which returns 2 addresses: the real load address and an address where the
region is mapped in the loader's address space. All of the ELF loading code
has been changed to access the load region through the mapped address rather
than the addresses contained in the ELF image. The ELF64 version of
platform_allocate_elf_region on x86 uses the existing MMU code, which maps
everything at 0x80000000, but returns the correct 64-bit address. The long
mode switch code will just set up the 64-bit address space with everything
remapped at the correct address.


# 884432c2 24-Aug-2010 Andreas Färber <andreas.faerber@web.de>

boot_loader_openfirmware: Fix style issues

Adjust initializers.
Respect 80-column limit and adjust copyright notice.
Reorder some header groups. Enforce line spacing.

No functional changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38343 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 957a1b17 30-Dec-2005 Ingo Weinhold <ingo_weinhold@gmx.de>

* Introduced new build system variables
{HAIKU,HOST,TARGET}_KERNEL_PIC_{CC,LINK}FLAGS which define the
compiler/linker flags specifying the kind of position independence
the kernel shall have. For x86 we had and still have -fno-pic, but the
PPC kernel has -fPIE (position independent executable) now, as we
need to relocate it.
* The boot loader relocates the kernel now. Mostly copied the relocation
code from the kernel ELF loader. Almost completely rewrote the PPC
specific relocation code, though. It's more correct and more complete now
(some things are still missing though).
* Added boot platform awareness to the kernel. Moved the generic
Open Firmware code (openfirmware.c/h) from the boot loader to the kernel.
* The kernel PPC serial debug output is sent to the console for the time
being.
* The PPC boot loader counts the CPUs now and allocates the kernel stacks
(made OF device iteration a bit more flexible on the way -- the search
can be restricted to subtree). Furthermore we really enter the kernel...
(Yay! :-) ... and crash in the first dprintf() (in the atomic_set()
called by acquire_spinlock()). kprintf() works, though.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15756 a95241bf-73f2-0310-859d-f6bbb57e9c96


# c83d9dad 28-Dec-2005 Ingo Weinhold <ingo_weinhold@gmx.de>

* platform_allocate_region() has a new boolean parameter "exactAddress"
specifying whether only the exact supplied address is acceptable. If
false, the address is considered a hint only. It will be picked, if
available, otherwise a greater address is tried to be acquired, and
as last resort any address. This feature is only implemented for PPC.
It is needed since the preferred kernel text base address 0x80000000
might not be available (and actually isn't on my Mac mini).
* Fixed a bug in the PPC memory management code:
is_{virtual,physical}_allocated() were checking whether the given
range was completely contained by an existing range instead of
checking for intersection. As a consequence we could (and did) allocate
a range intersecting with already allocated ranges. The kernel segment
thus overwrote OF memory for instance.
* The ELF loader makes sure that it got both text and data segment of
the image to be loaded.

The PPC boot loader successfully loads kernel and modules now. Next
comes the hard part, I'm afraid.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15708 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 68d3fc6f 28-Dec-2005 Ingo Weinhold <ingo_weinhold@gmx.de>

Don't allow allocation of zero sized area.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15700 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 7a3fa7d3 19-Dec-2005 Axel Dörfler <axeld@pinc-software.de>

* Followed Ingo's suggestion and removed the now superfluous "length" correction
in ConsoleHandle::WriteAt().
* Updated license.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15581 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 5af32e75 13-Apr-2005 Axel Dörfler <axeld@pinc-software.de>

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 6f6d78e877c1a485d98de60395854a6d6de61c0d 25-Jun-2012 Alex Smith <alex@alex-smith.me.uk>

Cleaned up ELF64 address handling.

* platform_allocate_elf_region() is removed, it is implemented in platform-
independent code now (ELF*Class::AllocateRegion). For ELF64 it is now
assumed that 64-bit addresses are mapped in the loader's 32-bit address space
as (address - KERNEL_BASE_64BIT + KERNEL_BASE).
* mapped_delta field from preloaded_*_image removed, now handled compile-time
using the ELF*Class::Map method.
* Also link the kernel with -z max-page-size=0x1000, removes the need for
2MB alignment on the data segment (not going to map the kernel with large
pages for the time being).


# 8846189866301c85683151a54ec88e809333ca7a 24-Jun-2012 Alex Smith <alex@alex-smith.me.uk>

Handle 64-bit load addresses for ELF64 images in the bootloader.

The ELF loader now uses a new platform function, platform_allocate_elf_region,
which returns 2 addresses: the real load address and an address where the
region is mapped in the loader's address space. All of the ELF loading code
has been changed to access the load region through the mapped address rather
than the addresses contained in the ELF image. The ELF64 version of
platform_allocate_elf_region on x86 uses the existing MMU code, which maps
everything at 0x80000000, but returns the correct 64-bit address. The long
mode switch code will just set up the 64-bit address space with everything
remapped at the correct address.


# 884432c2da9fbeb1f5e4e4a48ce271b8ad7ee204 24-Aug-2010 Andreas Färber <andreas.faerber@web.de>

boot_loader_openfirmware: Fix style issues

Adjust initializers.
Respect 80-column limit and adjust copyright notice.
Reorder some header groups. Enforce line spacing.

No functional changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38343 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 957a1b17eb9d13d6dbf164145e82997e16742549 30-Dec-2005 Ingo Weinhold <ingo_weinhold@gmx.de>

* Introduced new build system variables
{HAIKU,HOST,TARGET}_KERNEL_PIC_{CC,LINK}FLAGS which define the
compiler/linker flags specifying the kind of position independence
the kernel shall have. For x86 we had and still have -fno-pic, but the
PPC kernel has -fPIE (position independent executable) now, as we
need to relocate it.
* The boot loader relocates the kernel now. Mostly copied the relocation
code from the kernel ELF loader. Almost completely rewrote the PPC
specific relocation code, though. It's more correct and more complete now
(some things are still missing though).
* Added boot platform awareness to the kernel. Moved the generic
Open Firmware code (openfirmware.c/h) from the boot loader to the kernel.
* The kernel PPC serial debug output is sent to the console for the time
being.
* The PPC boot loader counts the CPUs now and allocates the kernel stacks
(made OF device iteration a bit more flexible on the way -- the search
can be restricted to subtree). Furthermore we really enter the kernel...
(Yay! :-) ... and crash in the first dprintf() (in the atomic_set()
called by acquire_spinlock()). kprintf() works, though.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15756 a95241bf-73f2-0310-859d-f6bbb57e9c96


# c83d9dad1c3cb1b0910f5db8c3f4645d3a206171 28-Dec-2005 Ingo Weinhold <ingo_weinhold@gmx.de>

* platform_allocate_region() has a new boolean parameter "exactAddress"
specifying whether only the exact supplied address is acceptable. If
false, the address is considered a hint only. It will be picked, if
available, otherwise a greater address is tried to be acquired, and
as last resort any address. This feature is only implemented for PPC.
It is needed since the preferred kernel text base address 0x80000000
might not be available (and actually isn't on my Mac mini).
* Fixed a bug in the PPC memory management code:
is_{virtual,physical}_allocated() were checking whether the given
range was completely contained by an existing range instead of
checking for intersection. As a consequence we could (and did) allocate
a range intersecting with already allocated ranges. The kernel segment
thus overwrote OF memory for instance.
* The ELF loader makes sure that it got both text and data segment of
the image to be loaded.

The PPC boot loader successfully loads kernel and modules now. Next
comes the hard part, I'm afraid.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15708 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 68d3fc6f8feaa39b413daa13fa6c0985416af1c5 28-Dec-2005 Ingo Weinhold <ingo_weinhold@gmx.de>

Don't allow allocation of zero sized area.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15700 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 7a3fa7d368448440e485ce03db59e25625b08c9c 19-Dec-2005 Axel Dörfler <axeld@pinc-software.de>

* Followed Ingo's suggestion and removed the now superfluous "length" correction
in ConsoleHandle::WriteAt().
* Updated license.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15581 a95241bf-73f2-0310-859d-f6bbb57e9c96


# 5af32e752606778be5dd7379f319fe43cb3f6b8c 13-Apr-2005 Axel Dörfler <axeld@pinc-software.de>

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96