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Merge branch 'virtex-for-2.6.27' of git://git.secretlab.ca/git/linux-2.6-virtex into 4xx-next

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This commit is contained in:
Josh Boyer 2008-07-09 13:35:16 -04:00
commit beae4c03c0
13 changed files with 1787 additions and 3 deletions
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141
Documentation/powerpc/bootwrapper.txt Normal file
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@ -0,0 +1,141 @@
The PowerPC boot wrapper
------------------------
Copyright (C) Secret Lab Technologies Ltd.
PowerPC image targets compresses and wraps the kernel image (vmlinux) with
a boot wrapper to make it usable by the system firmware. There is no
standard PowerPC firmware interface, so the boot wrapper is designed to
be adaptable for each kind of image that needs to be built.
The boot wrapper can be found in the arch/powerpc/boot/ directory. The
Makefile in that directory has targets for all the available image types.
The different image types are used to support all of the various firmware
interfaces found on PowerPC platforms. OpenFirmware is the most commonly
used firmware type on general purpose PowerPC systems from Apple, IBM and
others. U-Boot is typically found on embedded PowerPC hardware, but there
are a handful of other firmware implementations which are also popular. Each
firmware interface requires a different image format.
The boot wrapper is built from the makefile in arch/powerpc/boot/Makefile and
it uses the wrapper script (arch/powerpc/boot/wrapper) to generate target
image. The details of the build system is discussed in the next section.
Currently, the following image format targets exist:
cuImage.%: Backwards compatible uImage for older version of
U-Boot (for versions that don't understand the device
tree). This image embeds a device tree blob inside
the image. The boot wrapper, kernel and device tree
are all embedded inside the U-Boot uImage file format
with boot wrapper code that extracts data from the old
bd_info structure and loads the data into the device
tree before jumping into the kernel.
Because of the series of #ifdefs found in the
bd_info structure used in the old U-Boot interfaces,
cuImages are platform specific. Each specific
U-Boot platform has a different platform init file
which populates the embedded device tree with data
from the platform specific bd_info file. The platform
specific cuImage platform init code can be found in
arch/powerpc/boot/cuboot.*.c. Selection of the correct
cuImage init code for a specific board can be found in
the wrapper structure.
dtbImage.%: Similar to zImage, except device tree blob is embedded
inside the image instead of provided by firmware. The
output image file can be either an elf file or a flat
binary depending on the platform.
dtbImages are used on systems which do not have an
interface for passing a device tree directly.
dtbImages are similar to simpleImages except that
dtbImages have platform specific code for extracting
data from the board firmware, but simpleImages do not
talk to the firmware at all.
PlayStation 3 support uses dtbImage. So do Embedded
Planet boards using the PlanetCore firmware. Board
specific initialization code is typically found in a
file named arch/powerpc/boot/<platform>.c; but this
can be overridden by the wrapper script.
simpleImage.%: Firmware independent compressed image that does not
depend on any particular firmware interface and embeds
a device tree blob. This image is a flat binary that
can be loaded to any location in RAM and jumped to.
Firmware cannot pass any configuration data to the
kernel with this image type and it depends entirely on
the embedded device tree for all information.
The simpleImage is useful for booting systems with
an unknown firmware interface or for booting from
a debugger when no firmware is present (such as on
the Xilinx Virtex platform). The only assumption that
simpleImage makes is that RAM is correctly initialized
and that the MMU is either off or has RAM mapped to
base address 0.
simpleImage also supports inserting special platform
specific initialization code to the start of the bootup
sequence. The virtex405 platform uses this feature to
ensure that the cache is invalidated before caching
is enabled. Platform specific initialization code is
added as part of the wrapper script and is keyed on
the image target name. For example, all
simpleImage.virtex405-* targets will add the
virtex405-head.S initialization code (This also means
that the dts file for virtex405 targets should be
named (virtex405-<board>.dts). Search the wrapper
script for 'virtex405' and see the file
arch/powerpc/boot/virtex405-head.S for details.
treeImage.%; Image format for used with OpenBIOS firmware found
on some ppc4xx hardware. This image embeds a device
tree blob inside the image.
uImage: Native image format used by U-Boot. The uImage target
does not add any boot code. It just wraps a compressed
vmlinux in the uImage data structure. This image
requires a version of U-Boot that is able to pass
a device tree to the kernel at boot. If using an older
version of U-Boot, then you need to use a cuImage
instead.
zImage.%: Image format which does not embed a device tree.
Used by OpenFirmware and other firmware interfaces
which are able to supply a device tree. This image
expects firmware to provide the device tree at boot.
Typically, if you have general purpose PowerPC
hardware then you want this image format.
Image types which embed a device tree blob (simpleImage, dtbImage, treeImage,
and cuImage) all generate the device tree blob from a file in the
arch/powerpc/boot/dts/ directory. The Makefile selects the correct device
tree source based on the name of the target. Therefore, if the kernel is
built with 'make treeImage.walnut simpleImage.virtex405-ml403', then the
build system will use arch/powerpc/boot/dts/walnut.dts to build
treeImage.walnut and arch/powerpc/boot/dts/virtex405-ml403.dts to build
the simpleImage.virtex405-ml403.
Two special targets called 'zImage' and 'zImage.initrd' also exist. These
targets build all the default images as selected by the kernel configuration.
Default images are selected by the boot wrapper Makefile
(arch/powerpc/boot/Makefile) by adding targets to the $image-y variable. Look
at the Makefile to see which default image targets are available.
How it is built
---------------
arch/powerpc is designed to support multiplatform kernels, which means
that a single vmlinux image can be booted on many different target boards.
It also means that the boot wrapper must be able to wrap for many kinds of
images on a single build. The design decision was made to not use any
conditional compilation code (#ifdef, etc) in the boot wrapper source code.
All of the boot wrapper pieces are buildable at any time regardless of the
kernel configuration. Building all the wrapper bits on every kernel build
also ensures that obscure parts of the wrapper are at the very least compile
tested in a large variety of environments.
The wrapper is adapted for different image types at link time by linking in
just the wrapper bits that are appropriate for the image type. The 'wrapper
script' (found in arch/powerpc/boot/wrapper) is called by the Makefile and
is responsible for selecting the correct wrapper bits for the image type.
The arguments are well documented in the script's comment block, so they
are not repeated here. However, it is worth mentioning that the script
uses the -p (platform) argument as the main method of deciding which wrapper
bits to compile in. Look for the large 'case "$platform" in' block in the
middle of the script. This is also the place where platform specific fixups
can be selected by changing the link order.
In particular, care should be taken when working with cuImages. cuImage
wrapper bits are very board specific and care should be taken to make sure
the target you are trying to build is supported by the wrapper bits.

13
arch/powerpc/Kconfig
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@ -458,6 +458,19 @@ config CMDLINE
some command-line options at build time by entering them here. In
most cases you will need to specify the root device here.
config EXTRA_TARGETS
string "Additional default image types"
help
List additional targets to be built by the bootwrapper here (separated
by spaces). This is useful for targets that depend of device tree
files in the .dts directory.
Targets in this list will be build as part of the default build
target, or when the user does a 'make zImage' or a
'make zImage.initrd'.
If unsure, leave blank
if !44x || BROKEN
config ARCH_WANTS_FREEZER_CONTROL
def_bool y

15
arch/powerpc/Makefile
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@ -163,12 +163,25 @@ bootwrapper_install %.dtb:
$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
define archhelp
@echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
@echo '* zImage - Build default images selected by kernel config'
@echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
@echo ' uImage - U-Boot native image format'
@echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
@echo ' versions which do not support device trees'
@echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
@echo ' simpleImage.<dt> - Firmware independent image.'
@echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
@echo ' install - Install kernel using'
@echo ' (your) ~/bin/installkernel or'
@echo ' (distribution) /sbin/installkernel or'
@echo ' install to $$(INSTALL_PATH) and run lilo'
@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
@echo ''
@echo ' Targets with <dt> embed a device tree blob inside the image'
@echo ' These targets support board with firmware that does not'
@echo ' support passing a device tree directly. Replace <dt> with the'
@echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
@echo ' (minus the .dts extension).'
endef
install:

5
arch/powerpc/boot/Makefile
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@ -68,7 +68,7 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
fixed-head.S ep88xc.c ep405.c cuboot-c2k.c \
cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
virtex405-head.S redboot-83xx.c cuboot-sam440ep.c
virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c
src-boot := $(src-wlib) $(src-plat) empty.c
src-boot := $(addprefix $(obj)/, $(src-boot))
@ -276,6 +276,9 @@ ifeq ($(CONFIG_PPC32),y)
image-$(CONFIG_PPC_PMAC) += zImage.coff zImage.miboot
endif
# Allow extra targets to be added to the defconfig
image-y += $(subst ",,$(CONFIG_EXTRA_TARGETS))
initrd- := $(patsubst zImage%, zImage.initrd%, $(image-n) $(image-))
initrd-y := $(patsubst zImage%, zImage.initrd%, \
$(patsubst dtbImage%, dtbImage.initrd%, \

296
arch/powerpc/boot/dts/virtex440-ml507.dts Normal file
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@ -0,0 +1,296 @@
/*
* This file supports the Xilinx ML507 board with the 440 processor.
* A reference design for the FPGA is provided at http://git.xilinx.com.
*
* (C) Copyright 2008 Xilinx, Inc.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
/dts-v1/;
/ {
#address-cells = <1>;
#size-cells = <1>;
compatible = "xlnx,virtex440";
dcr-parent = <&ppc440_0>;
model = "testing";
DDR2_SDRAM: memory@0 {
device_type = "memory";
reg = < 0 0x10000000 >;
} ;
chosen {
bootargs = "console=ttyS0 ip=on root=/dev/ram";
linux,stdout-path = "/plb@0/serial@83e00000";
} ;
cpus {
#address-cells = <1>;
#cpus = <1>;
#size-cells = <0>;
ppc440_0: cpu@0 {
clock-frequency = <400000000>;
compatible = "PowerPC,440", "ibm,ppc440";
d-cache-line-size = <0x20>;
d-cache-size = <0x8000>;
dcr-access-method = "native";
dcr-controller ;
device_type = "cpu";
i-cache-line-size = <0x20>;
i-cache-size = <0x8000>;
model = "PowerPC,440";
reg = <0>;
timebase-frequency = <400000000>;
xlnx,apu-control = <1>;
xlnx,apu-udi-0 = <0>;
xlnx,apu-udi-1 = <0>;
xlnx,apu-udi-10 = <0>;
xlnx,apu-udi-11 = <0>;
xlnx,apu-udi-12 = <0>;
xlnx,apu-udi-13 = <0>;
xlnx,apu-udi-14 = <0>;
xlnx,apu-udi-15 = <0>;
xlnx,apu-udi-2 = <0>;
xlnx,apu-udi-3 = <0>;
xlnx,apu-udi-4 = <0>;
xlnx,apu-udi-5 = <0>;
xlnx,apu-udi-6 = <0>;
xlnx,apu-udi-7 = <0>;
xlnx,apu-udi-8 = <0>;
xlnx,apu-udi-9 = <0>;
xlnx,dcr-autolock-enable = <1>;
xlnx,dcu-rd-ld-cache-plb-prio = <0>;
xlnx,dcu-rd-noncache-plb-prio = <0>;
xlnx,dcu-rd-touch-plb-prio = <0>;
xlnx,dcu-rd-urgent-plb-prio = <0>;
xlnx,dcu-wr-flush-plb-prio = <0>;
xlnx,dcu-wr-store-plb-prio = <0>;
xlnx,dcu-wr-urgent-plb-prio = <0>;
xlnx,dma0-control = <0>;
xlnx,dma0-plb-prio = <0>;
xlnx,dma0-rxchannelctrl = <0x1010000>;
xlnx,dma0-rxirqtimer = <0x3ff>;
xlnx,dma0-txchannelctrl = <0x1010000>;
xlnx,dma0-txirqtimer = <0x3ff>;
xlnx,dma1-control = <0>;
xlnx,dma1-plb-prio = <0>;
xlnx,dma1-rxchannelctrl = <0x1010000>;
xlnx,dma1-rxirqtimer = <0x3ff>;
xlnx,dma1-txchannelctrl = <0x1010000>;
xlnx,dma1-txirqtimer = <0x3ff>;
xlnx,dma2-control = <0>;
xlnx,dma2-plb-prio = <0>;
xlnx,dma2-rxchannelctrl = <0x1010000>;
xlnx,dma2-rxirqtimer = <0x3ff>;
xlnx,dma2-txchannelctrl = <0x1010000>;
xlnx,dma2-txirqtimer = <0x3ff>;
xlnx,dma3-control = <0>;
xlnx,dma3-plb-prio = <0>;
xlnx,dma3-rxchannelctrl = <0x1010000>;
xlnx,dma3-rxirqtimer = <0x3ff>;
xlnx,dma3-txchannelctrl = <0x1010000>;
xlnx,dma3-txirqtimer = <0x3ff>;
xlnx,endian-reset = <0>;
xlnx,generate-plb-timespecs = <1>;
xlnx,icu-rd-fetch-plb-prio = <0>;
xlnx,icu-rd-spec-plb-prio = <0>;
xlnx,icu-rd-touch-plb-prio = <0>;
xlnx,interconnect-imask = <0xffffffff>;
xlnx,mplb-allow-lock-xfer = <1>;
xlnx,mplb-arb-mode = <0>;
xlnx,mplb-awidth = <0x20>;
xlnx,mplb-counter = <0x500>;
xlnx,mplb-dwidth = <0x80>;
xlnx,mplb-max-burst = <8>;
xlnx,mplb-native-dwidth = <0x80>;
xlnx,mplb-p2p = <0>;
xlnx,mplb-prio-dcur = <2>;
xlnx,mplb-prio-dcuw = <3>;
xlnx,mplb-prio-icu = <4>;
xlnx,mplb-prio-splb0 = <1>;
xlnx,mplb-prio-splb1 = <0>;
xlnx,mplb-read-pipe-enable = <1>;
xlnx,mplb-sync-tattribute = <0>;
xlnx,mplb-wdog-enable = <1>;
xlnx,mplb-write-pipe-enable = <1>;
xlnx,mplb-write-post-enable = <1>;
xlnx,num-dma = <1>;
xlnx,pir = <0xf>;
xlnx,ppc440mc-addr-base = <0>;
xlnx,ppc440mc-addr-high = <0xfffffff>;
xlnx,ppc440mc-arb-mode = <0>;
xlnx,ppc440mc-bank-conflict-mask = <0xc00000>;
xlnx,ppc440mc-control = <0xf810008f>;
xlnx,ppc440mc-max-burst = <8>;
xlnx,ppc440mc-prio-dcur = <2>;
xlnx,ppc440mc-prio-dcuw = <3>;
xlnx,ppc440mc-prio-icu = <4>;
xlnx,ppc440mc-prio-splb0 = <1>;
xlnx,ppc440mc-prio-splb1 = <0>;
xlnx,ppc440mc-row-conflict-mask = <0x3ffe00>;
xlnx,ppcdm-asyncmode = <0>;
xlnx,ppcds-asyncmode = <0>;
xlnx,user-reset = <0>;
DMA0: sdma@80 {
compatible = "xlnx,ll-dma-1.00.a";
dcr-reg = < 0x80 0x11 >;
interrupt-parent = <&xps_intc_0>;
interrupts = < 9 2 0xa 2 >;
} ;
} ;
} ;
plb_v46_0: plb@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "xlnx,plb-v46-1.02.a", "simple-bus";
ranges ;
DIP_Switches_8Bit: gpio@81460000 {
compatible = "xlnx,xps-gpio-1.00.a";
interrupt-parent = <&xps_intc_0>;
interrupts = < 6 2 >;
reg = < 0x81460000 0x10000 >;
xlnx,all-inputs = <1>;
xlnx,all-inputs-2 = <0>;
xlnx,dout-default = <0>;
xlnx,dout-default-2 = <0>;
xlnx,family = "virtex5";
xlnx,gpio-width = <8>;
xlnx,interrupt-present = <1>;
xlnx,is-bidir = <1>;
xlnx,is-bidir-2 = <1>;
xlnx,is-dual = <0>;
xlnx,tri-default = <0xffffffff>;
xlnx,tri-default-2 = <0xffffffff>;
} ;
Hard_Ethernet_MAC: xps-ll-temac@81c00000 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "xlnx,compound";
ethernet@81c00000 {
compatible = "xlnx,xps-ll-temac-1.01.b";
device_type = "network";
interrupt-parent = <&xps_intc_0>;
interrupts = < 5 2 >;
llink-connected = <&DMA0>;
local-mac-address = [ 02 00 00 00 00 00 ];
reg = < 0x81c00000 0x40 >;
xlnx,bus2core-clk-ratio = <1>;
xlnx,phy-type = <1>;
xlnx,phyaddr = <1>;
xlnx,rxcsum = <1>;
xlnx,rxfifo = <0x1000>;
xlnx,temac-type = <0>;
xlnx,txcsum = <1>;
xlnx,txfifo = <0x1000>;
} ;
} ;
LEDs_8Bit: gpio@81400000 {
compatible = "xlnx,xps-gpio-1.00.a";
reg = < 0x81400000 0x10000 >;
xlnx,all-inputs = <0>;
xlnx,all-inputs-2 = <0>;
xlnx,dout-default = <0>;
xlnx,dout-default-2 = <0>;
xlnx,family = "virtex5";
xlnx,gpio-width = <8>;
xlnx,interrupt-present = <0>;
xlnx,is-bidir = <1>;
xlnx,is-bidir-2 = <1>;
xlnx,is-dual = <0>;
xlnx,tri-default = <0xffffffff>;
xlnx,tri-default-2 = <0xffffffff>;
} ;
LEDs_Positions: gpio@81420000 {
compatible = "xlnx,xps-gpio-1.00.a";
reg = < 0x81420000 0x10000 >;
xlnx,all-inputs = <0>;
xlnx,all-inputs-2 = <0>;
xlnx,dout-default = <0>;
xlnx,dout-default-2 = <0>;
xlnx,family = "virtex5";
xlnx,gpio-width = <5>;
xlnx,interrupt-present = <0>;
xlnx,is-bidir = <1>;
xlnx,is-bidir-2 = <1>;
xlnx,is-dual = <0>;
xlnx,tri-default = <0xffffffff>;
xlnx,tri-default-2 = <0xffffffff>;
} ;
Push_Buttons_5Bit: gpio@81440000 {
compatible = "xlnx,xps-gpio-1.00.a";
interrupt-parent = <&xps_intc_0>;
interrupts = < 7 2 >;
reg = < 0x81440000 0x10000 >;
xlnx,all-inputs = <1>;
xlnx,all-inputs-2 = <0>;
xlnx,dout-default = <0>;
xlnx,dout-default-2 = <0>;
xlnx,family = "virtex5";
xlnx,gpio-width = <5>;
xlnx,interrupt-present = <1>;
xlnx,is-bidir = <1>;
xlnx,is-bidir-2 = <1>;
xlnx,is-dual = <0>;
xlnx,tri-default = <0xffffffff>;
xlnx,tri-default-2 = <0xffffffff>;
} ;
RS232_Uart_1: serial@83e00000 {
clock-frequency = <100000000>;
compatible = "xlnx,xps-uart16550-2.00.a", "ns16550";
current-speed = <0x2580>;
device_type = "serial";
interrupt-parent = <&xps_intc_0>;
interrupts = < 8 2 >;
reg = < 0x83e00000 0x10000 >;
reg-offset = <3>;
reg-shift = <2>;
xlnx,family = "virtex5";
xlnx,has-external-rclk = <0>;
xlnx,has-external-xin = <0>;
xlnx,is-a-16550 = <1>;
} ;
SysACE_CompactFlash: sysace@83600000 {
compatible = "xlnx,xps-sysace-1.00.a";
interrupt-parent = <&xps_intc_0>;
interrupts = < 4 2 >;
reg = < 0x83600000 0x10000 >;
xlnx,family = "virtex5";
xlnx,mem-width = <0x10>;
} ;
xps_bram_if_cntlr_1: xps-bram-if-cntlr@ffff0000 {
compatible = "xlnx,xps-bram-if-cntlr-1.00.a";
reg = < 0xffff0000 0x10000 >;
xlnx,family = "virtex5";
} ;
xps_intc_0: interrupt-controller@81800000 {
#interrupt-cells = <2>;
compatible = "xlnx,xps-intc-1.00.a";
interrupt-controller ;
reg = < 0x81800000 0x10000 >;
xlnx,num-intr-inputs = <0xb>;
} ;
xps_timebase_wdt_1: xps-timebase-wdt@83a00000 {
compatible = "xlnx,xps-timebase-wdt-1.00.b";
interrupt-parent = <&xps_intc_0>;
interrupts = < 2 0 1 2 >;
reg = < 0x83a00000 0x10000 >;
xlnx,family = "virtex5";
xlnx,wdt-enable-once = <0>;
xlnx,wdt-interval = <0x1e>;
} ;
xps_timer_1: timer@83c00000 {
compatible = "xlnx,xps-timer-1.00.a";
interrupt-parent = <&xps_intc_0>;
interrupts = < 3 2 >;
reg = < 0x83c00000 0x10000 >;
xlnx,count-width = <0x20>;
xlnx,family = "virtex5";
xlnx,gen0-assert = <1>;
xlnx,gen1-assert = <1>;
xlnx,one-timer-only = <1>;
xlnx,trig0-assert = <1>;
xlnx,trig1-assert = <1>;
} ;
} ;
} ;

6
arch/powerpc/boot/simpleboot.c
View File

@ -23,6 +23,8 @@
BSS_STACK(4*1024);
extern int platform_specific_init(void) __attribute__((weak));
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
@ -80,5 +82,9 @@ void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
/* prepare the device tree and find the console */
fdt_init(_dtb_start);
if (platform_specific_init)
platform_specific_init();
serial_console_init();
}

100
arch/powerpc/boot/virtex.c Normal file
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@ -0,0 +1,100 @@
/*
* The platform specific code for virtex devices since a boot loader is not
* always used.
*
* (C) Copyright 2008 Xilinx, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include "ops.h"
#include "io.h"
#include "stdio.h"
#define UART_DLL 0 /* Out: Divisor Latch Low */
#define UART_DLM 1 /* Out: Divisor Latch High */
#define UART_FCR 2 /* Out: FIFO Control Register */
#define UART_FCR_CLEAR_RCVR 0x02 /* Clear the RCVR FIFO */
#define UART_FCR_CLEAR_XMIT 0x04 /* Clear the XMIT FIFO */
#define UART_LCR 3 /* Out: Line Control Register */
#define UART_MCR 4 /* Out: Modem Control Register */
#define UART_MCR_RTS 0x02 /* RTS complement */
#define UART_MCR_DTR 0x01 /* DTR complement */
#define UART_LCR_DLAB 0x80 /* Divisor latch access bit */
#define UART_LCR_WLEN8 0x03 /* Wordlength: 8 bits */
static int virtex_ns16550_console_init(void *devp)
{
unsigned char *reg_base;
u32 reg_shift, reg_offset, clk, spd;
u16 divisor;
int n;
if (dt_get_virtual_reg(devp, (void **)&reg_base, 1) < 1)
return -1;
n = getprop(devp, "reg-offset", &reg_offset, sizeof(reg_offset));
if (n == sizeof(reg_offset))
reg_base += reg_offset;
n = getprop(devp, "reg-shift", &reg_shift, sizeof(reg_shift));
if (n != sizeof(reg_shift))
reg_shift = 0;
n = getprop(devp, "current-speed", (void *)&spd, sizeof(spd));
if (n != sizeof(spd))
spd = 9600;
/* should there be a default clock rate?*/
n = getprop(devp, "clock-frequency", (void *)&clk, sizeof(clk));
if (n != sizeof(clk))
return -1;
divisor = clk / (16 * spd);
/* Access baud rate */
out_8(reg_base + (UART_LCR << reg_shift), UART_LCR_DLAB);
/* Baud rate based on input clock */
out_8(reg_base + (UART_DLL << reg_shift), divisor & 0xFF);
out_8(reg_base + (UART_DLM << reg_shift), divisor >> 8);
/* 8 data, 1 stop, no parity */
out_8(reg_base + (UART_LCR << reg_shift), UART_LCR_WLEN8);
/* RTS/DTR */
out_8(reg_base + (UART_MCR << reg_shift), UART_MCR_RTS | UART_MCR_DTR);
/* Clear transmitter and receiver */
out_8(reg_base + (UART_FCR << reg_shift),
UART_FCR_CLEAR_XMIT | UART_FCR_CLEAR_RCVR);
return 0;
}
/* For virtex, the kernel may be loaded without using a bootloader and if so
some UARTs need more setup than is provided in the normal console init
*/
int platform_specific_init(void)
{
void *devp;
char devtype[MAX_PROP_LEN];
char path[MAX_PATH_LEN];
devp = finddevice("/chosen");
if (devp == NULL)
return -1;
if (getprop(devp, "linux,stdout-path", path, MAX_PATH_LEN) > 0) {
devp = finddevice(path);
if (devp == NULL)
return -1;
if ((getprop(devp, "device_type", devtype, sizeof(devtype)) > 0)
&& !strcmp(devtype, "serial")
&& (dt_is_compatible(devp, "ns16550")))
virtex_ns16550_console_init(devp);
}
return 0;
}

10
arch/powerpc/boot/wrapper
View File

@ -207,7 +207,15 @@ adder875-redboot)
binary=y
;;
simpleboot-virtex405-*)
platformo="$object/virtex405-head.o $object/simpleboot.o"
platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
binary=y
;;
simpleboot-virtex440-*)
platformo="$object/simpleboot.o $object/virtex.o"
binary=y
;;
simpleboot-*)
platformo="$object/simpleboot.o"
binary=y
;;
asp834x-redboot)

1107
arch/powerpc/configs/44x/virtex5_defconfig Normal file
View File

File diff suppressed because it is too large Load Diff

10
arch/powerpc/kernel/cputable.c
View File

@ -1447,6 +1447,16 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check = machine_check_440A,
.platform = "ppc440",
},
{ /* 440 in Xilinx Virtex-5 FXT */
.pvr_mask = 0xfffffff0,
.pvr_value = 0x7ff21910,
.cpu_name = "440 in Virtex-5 FXT",
.cpu_features = CPU_FTRS_44X,
.cpu_user_features = COMMON_USER_BOOKE,
.icache_bsize = 32,
.dcache_bsize = 32,
.platform = "ppc440",
},
{ /* 460EX */
.pvr_mask = 0xffff0002,
.pvr_value = 0x13020002,

26
arch/powerpc/platforms/44x/Kconfig
View File

@ -111,6 +111,22 @@ config YOSEMITE
# help
# This option enables support for the IBM PPC440GX evaluation board.
config XILINX_VIRTEX440_GENERIC_BOARD
bool "Generic Xilinx Virtex 440 board"
depends on 44x
default n
select XILINX_VIRTEX_5_FXT
help
This option enables generic support for Xilinx Virtex based boards
that use a 440 based processor in the Virtex 5 FXT FPGA architecture.
The generic virtex board support matches any device tree which
specifies 'xlnx,virtex440' in its compatible field. This includes
the Xilinx ML5xx reference designs using the powerpc core.
Most Virtex 5 designs should use this unless it needs to do some
special configuration at board probe time.
# 44x specific CPU modules, selected based on the board above.
config 440EP
bool
@ -161,3 +177,13 @@ config 460EX
# 44x errata/workaround config symbols, selected by the CPU models above
config IBM440EP_ERR42
bool
# Xilinx specific config options.
config XILINX_VIRTEX
bool
# Xilinx Virtex 5 FXT FPGA architecture, selected by a Xilinx board above
config XILINX_VIRTEX_5_FXT
bool
select XILINX_VIRTEX

1
arch/powerpc/platforms/44x/Makefile
View File

@ -10,3 +10,4 @@ obj-$(CONFIG_RAINIER) += rainier.o
obj-$(CONFIG_WARP) += warp.o
obj-$(CONFIG_WARP) += warp-nand.o
obj-$(CONFIG_CANYONLANDS) += canyonlands.o
obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o

60
arch/powerpc/platforms/44x/virtex.c Normal file
View File

@ -0,0 +1,60 @@
/*
* Xilinx Virtex 5FXT based board support, derived from
* the Xilinx Virtex (IIpro & 4FX) based board support
*
* Copyright 2007 Secret Lab Technologies Ltd.
* Copyright 2008 Xilinx, Inc.
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/init.h>
#include <linux/of_platform.h>
#include <asm/machdep.h>
#include <asm/prom.h>
#include <asm/time.h>
#include <asm/xilinx_intc.h>
#include <asm/reg.h>
#include <asm/ppc4xx.h>
#include "44x.h"
static struct of_device_id xilinx_of_bus_ids[] __initdata = {
{ .compatible = "simple-bus", },
{ .compatible = "xlnx,plb-v46-1.00.a", },
{ .compatible = "xlnx,plb-v46-1.02.a", },
{ .compatible = "xlnx,plb-v34-1.01.a", },
{ .compatible = "xlnx,plb-v34-1.02.a", },
{ .compatible = "xlnx,opb-v20-1.10.c", },
{ .compatible = "xlnx,dcr-v29-1.00.a", },
{ .compatible = "xlnx,compound", },
{}
};
static int __init virtex_device_probe(void)
{
of_platform_bus_probe(NULL, xilinx_of_bus_ids, NULL);
return 0;
}
machine_device_initcall(virtex, virtex_device_probe);
static int __init virtex_probe(void)
{
unsigned long root = of_get_flat_dt_root();
if (!of_flat_dt_is_compatible(root, "xlnx,virtex440"))
return 0;
return 1;
}
define_machine(virtex) {
.name = "Xilinx Virtex440",
.probe = virtex_probe,
.init_IRQ = xilinx_intc_init_tree,
.get_irq = xilinx_intc_get_irq,
.calibrate_decr = generic_calibrate_decr,
.restart = ppc4xx_reset_system,
};