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878ba61aa9
New and updated SoC support. Also included are some cleanups where the platform maintainers hadn't separated cleanups from new developent in separate branches. Some of the larger things worth pointing out: - A large set of changes from Alexandre Belloni and Nicolas Ferre preparing at91 platforms for multiplatform and cleaning up quite a bit in the process. - Removal of CSR's "Marco" SoC platform that never made it out to the market. We love seeing these since it means the vendor published support before product was out, which is exactly what we want! New platforms this release are: - Conexant Digicolor (CX92755 SoC) - Hisilicon HiP01 SoC - CSR/sirf Atlas7 SoC - ST STiH418 SoC - Common code changes for Nvidia Tegra132 (64-bit SoC) We're seeing more and more platforms having a harder time labelling changes as cleanups vs new development -- which is a good sign that we've come quite far on the cleanup effort. So over time we might start combining the cleanup and new-development branches more. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJU4uiiAAoJEIwa5zzehBx3LtoQAIP4eInJAumhB67MexzWGIBx eOsloBRMEBrjBQdSYsdsypN6T61WjDu1aieCxEGzIqitcMa59AIyyzglmlXy3UmV XQuSnIBag2fsOqrvqd+c6ewzAMxm2/Nbi3+zjzApkf27NDlBLhEjxuK6pAAf4Yw9 gyWqB9g0d4V06XdqRInRvyyVfMu6fdApHLnadtjcMdiorQGd1bcOE1sQYygy6N6e d6vGvyKSv4ygyDG9//njzm6C5OnmHliimMToeuDC2Scel69RM97EnMXys988CqUH 0Ru7XANEujtHXSOBYOyCv1kk4V5NguGzlfepe23oidOew8MjUdyRvKrwUiMt3AnT SVqcZ9UU5wjJC6j+iADh+E7zww2H0rA6vFRzXy297dDuLg2C2ONFljBj/tIKGc71 ++gLc6LRn7UmSyK98JMzkxDhmnnPn8w2O0M5GdabAqzZSfHlL1juW9ljp9Al5P6y apLRzqMGjEoyC4huXvB3XVfrxGfepe5pco6wVlwmF3ilwf7iHnfuHONC1aw2mPRO aOKiS+0gHWL3rNZtZQtyW7Ws0I2HJFip2CWIloBK1/2ntEoh51PH7jGw8iu/6jTk //DCXqPBNXcLqonB9CHJZ/EWt0wup0BcHyLjlWX7iEjsdP/QJXrDgnrV3qdHibbh AJASjs0YVDcdvRsRStlg =szd9 -----END PGP SIGNATURE----- Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform changes from Olof Johansson: "New and updated SoC support. Also included are some cleanups where the platform maintainers hadn't separated cleanups from new developent in separate branches. Some of the larger things worth pointing out: - A large set of changes from Alexandre Belloni and Nicolas Ferre preparing at91 platforms for multiplatform and cleaning up quite a bit in the process. - Removal of CSR's "Marco" SoC platform that never made it out to the market. We love seeing these since it means the vendor published support before product was out, which is exactly what we want! New platforms this release are: - Conexant Digicolor (CX92755 SoC) - Hisilicon HiP01 SoC - CSR/sirf Atlas7 SoC - ST STiH418 SoC - Common code changes for Nvidia Tegra132 (64-bit SoC) We're seeing more and more platforms having a harder time labelling changes as cleanups vs new development -- which is a good sign that we've come quite far on the cleanup effort. So over time we might start combining the cleanup and new-development branches more" * tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (124 commits) ARM: at91/trivial: unify functions and machine names ARM: at91: remove at91_dt_initialize and machine init_early() ARM: at91: change board files into SoC files ARM: at91: remove at91_boot_soc ARM: at91: move alternative initial mapping to board-dt-sama5.c ARM: at91: merge all SOC_AT91SAM9xxx ARM: at91: at91rm9200: set idle and restart from rm9200_dt_device_init() ARM: digicolor: select syscon and timer ARM: zynq: Simplify SLCR initialization ARM: zynq: PM: Fixed simple typo. ARM: zynq: Setup default gpio number for Xilinx Zynq ARM: digicolor: add low level debug support ARM: initial support for Conexant Digicolor CX92755 SoC ARM: OMAP2+: Add dm816x hwmod support ARM: OMAP2+: Add clock domain support for dm816x ARM: OMAP2+: Add board-generic.c entry for ti81xx ARM: at91: pm: remove warning to remove SOC_AT91SAM9263 usage ARM: at91: remove unused mach/system_rev.h ARM: at91: stop using HAVE_AT91_DBGUx ARM: at91: fix ordering of SRAM and PM initialization ... |
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.. | ||
Atmel | ||
Marvell | ||
msm | ||
nwfpe | ||
OMAP | ||
pxa | ||
SA1100 | ||
Samsung | ||
Samsung-S3C24XX | ||
SH-Mobile | ||
SPEAr | ||
sti | ||
sunxi | ||
VFP | ||
00-INDEX | ||
Booting | ||
CCN.txt | ||
cluster-pm-race-avoidance.txt | ||
firmware.txt | ||
Interrupts | ||
IXP4xx | ||
kernel_mode_neon.txt | ||
kernel_user_helpers.txt | ||
Makefile | ||
mem_alignment | ||
memory.txt | ||
Netwinder | ||
Porting | ||
README | ||
Setup | ||
swp_emulation | ||
tcm.txt | ||
uefi.txt | ||
vlocks.txt |
ARM Linux 2.6 ============= Please check <ftp://ftp.arm.linux.org.uk/pub/armlinux> for updates. Compilation of kernel --------------------- In order to compile ARM Linux, you will need a compiler capable of generating ARM ELF code with GNU extensions. GCC 3.3 is known to be a good compiler. Fortunately, you needn't guess. The kernel will report an error if your compiler is a recognized offender. To build ARM Linux natively, you shouldn't have to alter the ARCH = line in the top level Makefile. However, if you don't have the ARM Linux ELF tools installed as default, then you should change the CROSS_COMPILE line as detailed below. If you wish to cross-compile, then alter the following lines in the top level make file: ARCH = <whatever> with ARCH = arm and CROSS_COMPILE= to CROSS_COMPILE=<your-path-to-your-compiler-without-gcc> eg. CROSS_COMPILE=arm-linux- Do a 'make config', followed by 'make Image' to build the kernel (arch/arm/boot/Image). A compressed image can be built by doing a 'make zImage' instead of 'make Image'. Bug reports etc --------------- Please send patches to the patch system. For more information, see http://www.arm.linux.org.uk/developer/patches/info.php Always include some explanation as to what the patch does and why it is needed. Bug reports should be sent to linux-arm-kernel@lists.arm.linux.org.uk, or submitted through the web form at http://www.arm.linux.org.uk/developer/ When sending bug reports, please ensure that they contain all relevant information, eg. the kernel messages that were printed before/during the problem, what you were doing, etc. Include files ------------- Several new include directories have been created under include/asm-arm, which are there to reduce the clutter in the top-level directory. These directories, and their purpose is listed below: arch-* machine/platform specific header files hardware driver-internal ARM specific data structures/definitions mach descriptions of generic ARM to specific machine interfaces proc-* processor dependent header files (currently only two categories) Machine/Platform support ------------------------ The ARM tree contains support for a lot of different machine types. To continue supporting these differences, it has become necessary to split machine-specific parts by directory. For this, the machine category is used to select which directories and files get included (we will use $(MACHINE) to refer to the category) To this end, we now have arch/arm/mach-$(MACHINE) directories which are designed to house the non-driver files for a particular machine (eg, PCI, memory management, architecture definitions etc). For all future machines, there should be a corresponding arch/arm/mach-$(MACHINE)/include/mach directory. Modules ------- Although modularisation is supported (and required for the FP emulator), each module on an ARM2/ARM250/ARM3 machine when is loaded will take memory up to the next 32k boundary due to the size of the pages. Therefore, is modularisation on these machines really worth it? However, ARM6 and up machines allow modules to take multiples of 4k, and as such Acorn RiscPCs and other architectures using these processors can make good use of modularisation. ADFS Image files ---------------- You can access image files on your ADFS partitions by mounting the ADFS partition, and then using the loopback device driver. You must have losetup installed. Please note that the PCEmulator DOS partitions have a partition table at the start, and as such, you will have to give '-o offset' to losetup. Request to developers --------------------- When writing device drivers which include a separate assembler file, please include it in with the C file, and not the arch/arm/lib directory. This allows the driver to be compiled as a loadable module without requiring half the code to be compiled into the kernel image. In general, try to avoid using assembler unless it is really necessary. It makes drivers far less easy to port to other hardware. ST506 hard drives ----------------- The ST506 hard drive controllers seem to be working fine (if a little slowly). At the moment they will only work off the controllers on an A4x0's motherboard, but for it to work off a Podule just requires someone with a podule to add the addresses for the IRQ mask and the HDC base to the source. As of 31/3/96 it works with two drives (you should get the ADFS *configure harddrive set to 2). I've got an internal 20MB and a great big external 5.25" FH 64MB drive (who could ever want more :-) ). I've just got 240K/s off it (a dd with bs=128k); thats about half of what RiscOS gets; but it's a heck of a lot better than the 50K/s I was getting last week :-) Known bug: Drive data errors can cause a hang; including cases where the controller has fixed the error using ECC. (Possibly ONLY in that case...hmm). 1772 Floppy ----------- This also seems to work OK, but hasn't been stressed much lately. It hasn't got any code for disc change detection in there at the moment which could be a bit of a problem! Suggestions on the correct way to do this are welcome. CONFIG_MACH_ and CONFIG_ARCH_ ----------------------------- A change was made in 2003 to the macro names for new machines. Historically, CONFIG_ARCH_ was used for the bonafide architecture, e.g. SA1100, as well as implementations of the architecture, e.g. Assabet. It was decided to change the implementation macros to read CONFIG_MACH_ for clarity. Moreover, a retroactive fixup has not been made because it would complicate patching. Previous registrations may be found online. <http://www.arm.linux.org.uk/developer/machines/> Kernel entry (head.S) -------------------------- The initial entry into the kernel is via head.S, which uses machine independent code. The machine is selected by the value of 'r1' on entry, which must be kept unique. Due to the large number of machines which the ARM port of Linux provides for, we have a method to manage this which ensures that we don't end up duplicating large amounts of code. We group machine (or platform) support code into machine classes. A class typically based around one or more system on a chip devices, and acts as a natural container around the actual implementations. These classes are given directories - arch/arm/mach-<class> and arch/arm/mach-<class> - which contain the source files to/include/mach support the machine class. This directories also contain any machine specific supporting code. For example, the SA1100 class is based upon the SA1100 and SA1110 SoC devices, and contains the code to support the way the on-board and off- board devices are used, or the device is setup, and provides that machine specific "personality." This fine-grained machine specific selection is controlled by the machine type ID, which acts both as a run-time and a compile-time code selection method. You can register a new machine via the web site at: <http://www.arm.linux.org.uk/developer/machines/> --- Russell King (15/03/2004)