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2007-07-10[POWERPC] PS3: Bootwrapper support.Geoff Levand
Add support to build the PS3 flash rom image and remove some unneeded lmb calls. The PS3's lv1 loader supports loading gzipped binary images from flash rom to addr zero. The loader enters the image at addr 0x100. In this implementation a bootwrapper overlay is use to arrange for the kernel to be loaded to addr zero and to have a suitable bootwrapper entry at 0x100. To construct the rom image, 0x100 bytes from offset 0x100 in the kernel is copied to the bootwrapper symbol __system_reset_kernel. The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is then copied to offset 0x100. At runtime the bootwrapper program copies the 0x100 bytes at __system_reset_kernel to addr 0x100. zImage.ps3 is a wrapped image that contains a flat device tree, an lv1 compatible entry point, and an optional initrd. otheros.bld is the gzip compresed rom image built from zImage.ps3. otheros.bld is suitable for programming into the PS3 boot flash memory. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-02[POWERPC] Fix zImage.coff generation for 32-bit pmacMilton Miller
Commit 9da82a6dee9db4cd5ae7a74ab4f51afb52b6efb9 inadvertently removed the platform override for zImage.coff to be generated with pmaccoff. Rather than add a special makefile rule, change the platform for which the wrapper platform uses the special rules. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-08[POWERPC] Support for the Ebony 440GP reference board in arch/powerpcDavid Gibson
This adds platform support code for the Ebony (440GP) evaluation board. This includes both code in arch/powerpc/platforms/44x for board initialization, and zImage wrapper code to correctly tweak the flattened device tree based on information from the firmware. The zImage supports both IBM OpenBIOS (aka "treeboot") and old versions of uboot which don't support a flattened device tree. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-05-02[POWERPC] Small cleanups to the cuboot bootwrapper codeDavid Gibson
This patch makes a few small cleanups to the cuboot code. - It removes the double layered selection of images, via cuboot-plat-y, instead having the cuboot platforms directly select a suitable image-y (this changes the name of the final cuboot image from plain cuImage to cuImage.<platform>). - Factors out some code in the wrapper that's potentially useful to platforms other than uboot. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-24[POWERPC] bootwrapper: Add a cuboot platform and a cuImage targetScott Wood
The cuImage target will build a uImage with bootwrapper code and a device tree. The default device tree and platform file are determined by the kernel configuration. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-04-13[POWERPC] bootwrapper: no-gzip fixesMilton Miller
Commit a9903811bf8d130a26004f9cb27b66513a267908 missed two uses of the the .gz suffix in the wrapper script and didn't clean the additonal possibly cached files. Signed-off-by: Milton Miller <miltonm@bga.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-21[POWERPC] bootwrapper: Make compression of the kernel image optional.Scott Wood
The --no-gzip option can be passed to the wrapper so that the kernel image is included uncompressed into the zImage. This is intended for bootloaders where the zImage itself can be compressed, or where boot time is considered more important than kernel image size. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-03-13[POWERPC] zImage: Cleanup and improve zImage entry pointDavid Gibson
This patch re-organises the way the zImage wrapper code is entered, to allow more flexibility on platforms with unusual entry conditions. After this patch, a platform .o file has two options: 1) It can define a _zimage_start, in which case the platform code gets control from the very beginning of execution. In this case the platform code is responsible for relocating the zImage if necessary, clearing the BSS, performing any platform specific initialization, and finally calling start() to load and enter the kernel. 2) It can define platform_init(). In this case the generic crt0.S handles initial entry, and calls platform_init() before calling start(). The signature of platform_init() is changed, however, to take up to 5 parameters (in r3..r7) as they come from the platform's initial loader, instead of a fixed set of parameters based on OF's usage. When using the generic crt0.S, the platform .o can optionally supply a custom stack to use, using the BSS_STACK() macro. If this is not supplied, the crt0.S will assume that the loader has supplied a usable stack. In either case, the platform code communicates information to the generic code (specifically, a PROM pointer for OF systems, and/or an initrd image address supplied by the bootloader) via a global structure "loader_info". In addition the wrapper script is rearranged to ensure that the platform .o is always linked first. This means that platforms where the zImage entry point is at a fixed address or offset, rather than being encoded in the binary header can be supported using option (1). Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-13[PATCH] Remove dtb file created by wrapper scriptMark A. Greer
When the wrapper script is passed a dts file, it runs 'dtc' to create a dtb file. This patch deletes that dtb file once its no longer needed. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-18[POWERPC] More bootwrapper reorganizationMark A. Greer
More reorganization of the bootwrapper: - Add dtb section to zImage - ft_init now called by platform_init - Pack a flat dt before calling kernel - Remove size parameter from free - printf only calls console_ops.write it its not NULL - Some cleanup Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-28[POWERPC] Create a "wrapper" script and use it in arch/powerpc/bootPaul Mackerras
This puts the knowledge of how to create various sorts of zImage wrappers into a script called "wrapper" that could be used outside of the kernel tree. This changes arch/powerpc/boot so it first builds the files that the wrapper script needs, then runs it to create whatever flavours of zImage are required. This version does uImages as well. The zImage names are changed slightly; zImage.pseries is the one with the PT_NOTE program header entry added, and zImage.pmac is the one without. If the zImage.pseries gets made, it will also get hardlinked to zImage; otherwise, if zImage.pmac is made, it gets hardlinked to zImage. Signed-off-by: Paul Mackerras <paulus@samba.org>