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New core SoC-specific changes. New platforms: * Introduction of a vendor, Hisilicon, and one of their SoCs with some random numerical product name. * Introduction of EFM32, embedded platform from Silicon Labs (ARMv7m, i.e. !MMU). * Marvell Berlin series of SoCs, which include the one in Chromecast. * MOXA platform support, ARM9-based platform used mostly in industrial products * Support for Freescale's i.MX50 SoC. Other work: * Renesas work for new platforms and drivers, and conversion over to more multiplatform-friendly device registration schemes. * SMP support for Allwinner sunxi platforms. * ... plus a bunch of other stuff across various platforms. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJS4VggAAoJEIwa5zzehBx3YkEP/j/Vp83zPcPijb8CNLUGJ9rK RTOW9hlLbwCGAcIi/32XVjup1ylTzQuwKpH2R6Sf2GRcmXI1HbCCyDSGKWq+eK9C vDRoWiU9DVRmXuaC7R1dscLS1qSobVoI80bOstblZW65799z48IllD7rJA1BzDIg vUy4knY9hO39DK7sJymXTBJepWxXJHMaYmr15xuxbaR3Qsp8zisqyzMwLqVfBwFB FyPr2PfxU8HJOoWhIsVo+679pmb9tHD6our0HG/lHSuPcRO/3UwN+VD87SwfpjNx P7qiRFkIoMooiTRmjwPPNbMZBJHl6vBR1RWHmws5s9aay1DDhdvQURxKx4bNaN/A UzwiestopISLChd9jqjxTbngl1mvLaL9JwBjRVAkXG4vJJFrhwqvmcMrlszA3ueR 2Th/NBk0b2s8ncAuT7bFe4i/H7es8aI/D2weF3FxRGgpan/B0T0UDAKO+rrMYZ0q 1ZoqlgMQZ0o1l7B5v90h0QQo/GMmin1xzyAChmsl8xbOHh5YfWVFGwLzVbYeZ/YJ yf3CcgQjAA8UV3f1J3nZeqM84o8qqtKUmUjsqWIgT2DnxOoM3pGckrmQ4OvhLccd etROW2nr8EqmoL7shheeHPANoDsTT1XSs0xbWo4ZBpGW5rTIFVoLEGyqa48tw5qA pkH1KwpwEXTrw6MXP5L1 =pgLW -----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 core SoC-specific changes. New platforms: * Introduction of a vendor, Hisilicon, and one of their SoCs with some random numerical product name. * Introduction of EFM32, embedded platform from Silicon Labs (ARMv7m, i.e. !MMU). * Marvell Berlin series of SoCs, which include the one in Chromecast. * MOXA platform support, ARM9-based platform used mostly in industrial products * Support for Freescale's i.MX50 SoC. Other work: * Renesas work for new platforms and drivers, and conversion over to more multiplatform-friendly device registration schemes. * SMP support for Allwinner sunxi platforms. * ... plus a bunch of other stuff across various platforms" * tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (201 commits) ARM: tegra: fix tegra_powergate_sequence_power_up() inline ARM: msm_defconfig: Update for multi-platform ARM: msm: Move MSM's DT based hardware to multi-platform support ARM: msm: Only build timer.c if required ARM: msm: Only build clock.c on proc_comm based platforms ARM: ux500: Enable system suspend with WFI support ARM: ux500: turn on PRINTK_TIME in u8500_defconfig ARM: shmobile: r8a7790: Fix I2C controller names ARM: msm: Simplify ARCH_MSM_DT config ARM: msm: Add support for MSM8974 SoC ARM: sunxi: select ARM_PSCI MAINTAINERS: Update Allwinner sunXi maintainer files ARM: sunxi: Select RESET_CONTROLLER ARM: imx: improve the comment of CCM lpm SW workaround ARM: imx: improve status check of clock gate ARM: imx: add necessary interface for pfd ARM: imx_v6_v7_defconfig: Select CONFIG_REGULATOR_PFUZE100 ARM: imx_v6_v7_defconfig: Select MX35 and MX50 device tree support ARM: imx: Add cpu frequency scaling support ARM i.MX35: Add devicetree support. ... |
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.. | ||
Marvell | ||
msm | ||
nwfpe | ||
OMAP | ||
pxa | ||
SA1100 | ||
Samsung | ||
Samsung-S3C24XX | ||
SH-Mobile | ||
SPEAr | ||
sti | ||
sunxi | ||
VFP | ||
00-INDEX | ||
Booting | ||
cluster-pm-race-avoidance.txt | ||
firmware.txt | ||
Interrupts | ||
IXP4xx | ||
kernel_mode_neon.txt | ||
kernel_user_helpers.txt | ||
mem_alignment | ||
memory.txt | ||
Netwinder | ||
Porting | ||
README | ||
Setup | ||
swp_emulation | ||
tcm.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)