powerpc: remove PReP platform (933ee711) · Commits · e / devices / android_kernel_fairphone_FP4

Documentation/powerpc/00-INDEX

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		@@ -14,10 +14,6 @@ hvcs.txt
		- IBM "Hypervisor Virtual Console Server" Installation Guide
		mpc52xx.txt
		- Linux 2.6.x on MPC52xx family
		sound.txt
		- info on sound support under Linux/PPC
		zImage_layout.txt
		- info on the kernel images for Linux/PPC
		qe_firmware.txt
		- describes the layout of firmware binaries for the Freescale QUICC
		Engine and the code that parses and uploads the microcode therein.

Documentation/powerpc/sound.txt

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		Information about PowerPC Sound support
		=====================================================================

		Please mail me (Cort Dougan, cort@fsmlabs.com) if you have questions,
		comments or corrections.

		Last Change: 6.16.99

		This just covers sound on the PReP and CHRP systems for now and later
		will contain information on the PowerMac's.

		Sound on PReP has been tested and is working with the PowerStack and IBM
		Power Series onboard sound systems which are based on the cs4231(2) chip.
		The sound options when doing the make config are a bit different from
		the default, though.

		The I/O base, irq and dma lines that you enter during the make config
		are ignored and are set when booting according to the machine type.
		This is so that one binary can be used for Motorola and IBM machines
		which use different values and isn't allowed by the driver, so things
		are hacked together in such a way as to allow this information to be
		set automatically on boot.

		1. Motorola PowerStack PReP machines

		Enable support for "Crystal CS4232 based (PnP) cards" and for the
		Microsoft Sound System. The MSS isn't used, but some of the routines
		that the CS4232 driver uses are in it.

		Although the options you set are ignored and determined automatically
		on boot these are included for information only:

		(830) CS4232 audio I/O base 530, 604, E80 or F40
		(10) CS4232 audio IRQ 5, 7, 9, 11, 12 or 15
		(6) CS4232 audio DMA 0, 1 or 3
		(7) CS4232 second (duplex) DMA 0, 1 or 3

		This will allow simultaneous record and playback, as 2 different dma
		channels are used.

		The sound will be all left channel and very low volume since the
		auxiliary input isn't muted by default. I had the changes necessary
		for this in the kernel but the sound driver maintainer didn't want
		to include them since it wasn't common in other machines. To fix this
		you need to mute it using a mixer utility of some sort (if you find one
		please let me know) or by patching the driver yourself and recompiling.

		There is a problem on the PowerStack 2's (PowerStack Pro's) using a
		different irq/drq than the kernel expects. Unfortunately, I don't know
		which irq/drq it is so if anyone knows please email me.

		Midi is not supported since the cs4232 driver doesn't support midi yet.

		2. IBM PowerPersonal PReP machines

		I've only tested sound on the Power Personal Series of IBM workstations
		so if you try it on others please let me know the result. I'm especially
		interested in the 43p's sound system, which I know nothing about.

		Enable support for "Crystal CS4232 based (PnP) cards" and for the
		Microsoft Sound System. The MSS isn't used, but some of the routines
		that the CS4232 driver uses are in it.

		Although the options you set are ignored and determined automatically
		on boot these are included for information only:

		(530) CS4232 audio I/O base 530, 604, E80 or F40
		(5) CS4232 audio IRQ 5, 7, 9, 11, 12 or 15
		(1) CS4232 audio DMA 0, 1 or 3
		(7) CS4232 second (duplex) DMA 0, 1 or 3
		(330) CS4232 MIDI I/O base 330, 370, 3B0 or 3F0
		(9) CS4232 MIDI IRQ 5, 7, 9, 11, 12 or 15

		This setup does _NOT_ allow for recording yet.

		Midi is not supported since the cs4232 driver doesn't support midi yet.

		2. IBM CHRP

		I have only tested this on the 43P-150. Build the kernel with the cs4232
		set as a module and load the module with irq=9 dma=1 dma2=2 io=0x550

Documentation/powerpc/zImage_layout.txt

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		Information about the Linux/PPC kernel images
		=====================================================================

		Please mail me (Cort Dougan, cort@fsmlabs.com) if you have questions,
		comments or corrections.

		This document is meant to answer several questions I've had about how
		the PReP system boots and how Linux/PPC interacts with that mechanism.
		It would be nice if we could have information on how other architectures
		boot here as well. If you have anything to contribute, please
		let me know.


		1. PReP boot file

		This is the file necessary to boot PReP systems from floppy or
		hard drive. The firmware reads the PReP partition table entry
		and will load the image accordingly.

		To boot the zImage, copy it onto a floppy with dd if=zImage of=/dev/fd0h1440
		or onto a PReP hard drive partition with dd if=zImage of=/dev/sda4
		assuming you've created a PReP partition (type 0x41) with fdisk on
		/dev/sda4.

		The layout of the image format is:

		0x0 +------------+
		\| \| PReP partition table entry
		\| \|
		0x400 +------------+
		\| \| Bootstrap program code + data
		\| \|
		\| \|
		+------------+
		\| \| compressed kernel, elf header removed
		+------------+
		\| \| initrd (if loaded)
		+------------+
		\| \| Elf section table for bootstrap program
		+------------+


		2. MBX boot file

		The MBX boards can load an elf image, and relocate it to the
		proper location in memory - it copies the image to the location it was
		linked at.

arch/powerpc/Kconfig

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		@@ -647,14 +647,14 @@ menu "Bus options"

		config ISA
		bool "Support for ISA-bus hardware"
		depends on PPC_PREP \|\| PPC_CHRP
		depends on PPC_CHRP
		select PPC_I8259
		help
		Find out whether you have ISA slots on your motherboard. ISA is the
		name of a bus system, i.e. the way the CPU talks to the other stuff
		inside your box. If you have an Apple machine, say N here; if you
		have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
		you have an embedded board, consult your board documentation.
		have an IBM RS/6000 or pSeries machine, say Y. If you have an
		embedded board, consult your board documentation.

		config ZONE_DMA
		bool
		@@ -968,7 +968,7 @@ config TASK_SIZE_BOOL

		config TASK_SIZE
		hex "Size of user task space" if TASK_SIZE_BOOL
		default "0x80000000" if PPC_PREP \|\| PPC_8xx
		default "0x80000000" if PPC_8xx
		default "0xc0000000"

		config CONSISTENT_SIZE_BOOL

arch/powerpc/include/asm/dma.h

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		@@ -16,10 +16,6 @@
		*
		* None of this really applies for Power Macintoshes. There is
		* basically just enough here to get kernel/dma.c to compile.
		*
		* There may be some comments or restrictions made here which are
		* not valid for the PReP platform. Take what you read
		* with a grain of salt.
		*/

		#include <asm/io.h>
		@@ -57,7 +53,6 @@
		* - page registers for 5-7 don't use data bit 0, represent 128K pages
		* - page registers for 0-3 use bit 0, represent 64K pages
		*
		* On PReP, DMA transfers are limited to the lower 16MB of _physical_ memory.
		* On CHRP, the W83C553F (and VLSI Tollgate?) support full 32 bit addressing.
		* Note that addresses loaded into registers must be _physical_ addresses,
		* not logical addresses (which may differ if paging is active).