linux.git/arch/powerpc/kernel/prom_init.c, branch v2.6.26

[POWERPC] Efika: Really, don't pretend to be CHRP

2008-04-16T21:46:12+00:00

Fedora 9 works on Efika without the separate 'device-tree supplement',
thanks to the kernel's own fixups. With one exception -- because 'CHRP'
still appears on the 'machine:' line in /proc/cpuinfo, the installer
misdetects the platform and misconfigures yaboot, putting it into a PReP
boot partition instead of in the /boot filesystem where the Efika's
firmware could find it.

The kernel's fixups for Efika already correct one instance of 'chrp', in
the 'device_type' property. This fixes it in the 'CODEGEN,description'
property too, since that's what's exposed to userspace in /proc/cpuinfo.

Signed-off-by: David Woodhouse 
Acked-by: Grant Likely 
Signed-off-by: Paul Mackerras

[POWERPC] Efika: prune fixups and make them more carefull

2008-01-26T22:32:18+00:00

Prune back Efika fixups to only include changes that are actually required
to get a working system.  Most of the drivers can accept the compatible
properties, even if they don't match the what is recommented in the generic
names recommended practice document.

This patch also adds extra checks so that fixups are not performed blindly.
Instead, the code first verifies that the device tree is faulty before
making any changes.  This way, if the Efika firmware is updated to fix
these issues, then the fixups will no longer get applied.

At this point; here is the list of fixups needed for the efika:
1. If the device_type property on the root node is 'chrp', then Linux won't
   boot.  Change device_type to 'efika' to avoid this condition
2. Add full interrupt list to the bestcomm node.  In actual fact, the
   bestcomm interrupts property is technically correct, it just doesn't
   expose the same granularity as the device driver expects.  All other
   5200 device trees provide a separate irq number for each bestcomm
   channel.  Rather than hack the driver, it's simpler to fix it up
3. /builtin/sound node is missing an interrupts property
4. /builtin/ethernet node is missing a phy-handle property and the
   device driver doesn't know what to do without one.

Signed-off-by: Grant Likely

[POWERPC] efika: add phy-handle property for fec_mpc52xx

2008-01-10T15:12:59+00:00

The new network driver fec_mpc52xx will not work on efika because the
firmware does not provide all required properties.
http://www.powerdeveloper.org/asset/by-id/46 has a Forth script to
create more properties. But only the phy stuff is required to get a
working network.

This should go into the kernel because its appearently
impossible to boot the script via tftp and then load the real boot
binary (yaboot or zimage).

Signed-off-by: Olaf Hering 
Signed-off-by: Grant Likely 
Acked-by: Benjamin Herrenschmidt

[POWERPC] ] Fix memset size error

2007-11-08T03:15:33+00:00

The size passing to memset is wrong.

Signed-off-by Li Zefan 
Acked-by: Benjamin Herrenschmidt 

Signed-off-by: Paul Mackerras

[POWERPC] prom_init whitespace cleanup, typo fix

2007-09-13T15:33:24+00:00

Whitespace cleanup: badly indented lines.
Typo in comment.

Signed-off-by: Linas Vepstas 
Signed-off-by: Paul Mackerras

[POWERPC] Advertise correct IDE mode on Pegasos2

2007-08-22T05:21:46+00:00

The built-in IDE controller is configured in legacy mode, but the PCI
registers advertise native mode.  Force the PCI class into legacy
mode. This allows pata_via to access two drives.

The Pegasos specific irq enforcement in the via82cxxx driver must stay
because there is apparently no generic way to setup irq per channel.

Tested on Pegasos2 with firmware version 20040810, and two IDE disks.

Signed-off-by: Olaf Hering 
Signed-off-by: Paul Mackerras

[POWERPC] Donate idle CPU cycles on dedicated partitions

2007-06-14T12:29:58+00:00

A Power6 can give up CPU cycles on a dedicated CPU (as opposed to a
shared CPU) to other shared processors if the administrator asks for it
(via the HMC).

This enables that to work properly on P6.

This just involves setting a bit in the CAS structure as well as the
VPA.  To donate cycles, a CPU has to have all SMT threads idle and
have the donate bit set in the VPA.  Then call H_CEDE.

The reason why shared processors just aren't used is because dedicated
CPUs are guaranteed an actual processor, yet the system is still able to
increase the capacity of the shared CPU pool.

Also rename the VPA's cpuctls_task_attrs field to a more accurate name.

Signed-off-by: Jake Moilanen 
Signed-off-by: Paul Mackerras

[POWERPC] Tell Phyp we support MSI

2007-05-08T03:40:31+00:00

Tell Phyp we support MSI via the client architecture support mechanism.

Signed-off-by: Jake Moilanen 
Signed-off-by: Michael Ellerman 
Signed-off-by: Paul Mackerras

[POWERPC] Add __init annotations to reserve_mem() and stabs_alloc()

2007-05-08T01:54:19+00:00

reserve_mem() and stabs_alloc() are both called only from other __init
routines, so can be marked __init.

Signed-off-by: Michael Ellerman 
Signed-off-by: Paul Mackerras

[POWERPC] Set efika's device_type to "soc"

2007-05-07T10:31:15+00:00

Device type should be "soc" (as in lite5200.dts), compatible is
already set to "mpc5200".

Signed-off-by: Domen Puncer 
Signed-off-by: Sylvain Munaut 
Signed-off-by: Paul Mackerras