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* powerpc/boot: Parse chosen/cmdline-timeout parameterSimon Kagstrom2014-11-101-1/+1
| | | | | | | | | | | | On some platforms a 5 second timeout during boot might be quite long, so make it configurable. Run the loop at least once to let the user stop the boot by holding a key pressed. If the timeout is set to 0, don't wait for input, which can be used as a workaround if the boot hangs on random data coming in on the serial port. Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net> [mpe: Changelog wording & whitespace] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
* powerpc: Bump BOOT_COMMAND_LINE_SIZE to 2048Anton Blanchard2014-04-281-1/+1
| | | | | | | | Bump the boot wrapper BOOT_COMMAND_LINE_SIZE to match the kernel. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Rename duplicate COMMAND_LINE_SIZE defineAnton Blanchard2014-04-281-1/+1
| | | | | | | | | | | | | | | We have two definitions of COMMAND_LINE_SIZE, one for the kernel and one for the boot wrapper. I assume this is so the boot wrapper can be self sufficient and not rely on kernel headers. Having two defines with the same name is confusing, I just updated the wrong one when trying to bump it. Make the boot wrapper define unique by calling it BOOT_COMMAND_LINE_SIZE. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Add del_node() for early boot code to prune inapplicable devices.Mike Ditto2008-10-221-0/+6
| | | | | | | | | Some platforms have variants that can share most of a flat device tree but need a few devices selectively pruned at boot time. This adds del_node() to ops.h to allow access to the existing fdt_del_node(). Signed-off-by: Mike Ditto <mditto@consentry.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* [POWERPC] Add bootwrapper function to get virtual reg from the device tree.Laurent Pinchart2008-04-171-0/+1
| | | | | | | | | | | | | | This patch adds a new generic device tree processing function that retrieves virtual reg addresses from the device tree to the bootwrapper code. It also updates the bootwrapper code to use the new function. dt_get_virtual_reg() retrieves the virtual reg addresses from the "virtual-reg" property. If the property can't be found, it uses the "reg" property and walks the tree to translate it to absolute addresses. Signed-off-by: Laurent Pinchart <laurentp@cse-semaphore.com> Acked-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] bootwrapper: Add find_node_by_compatibleKumar Gala2008-01-271-0/+11
| | | | | | | Add the ability to find a device node by just what its compatible with. This is useful in cases that we don't have a prop to find the node with. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] bootwrapper: Add find_node_by_alias and dt_fixup_mac_address_by_aliasKumar Gala2008-01-231-0/+14
| | | | | | | Add the ability to set the mac address given the alias for the device. Removes the need for having a linux,network-index property. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* [POWERPC] Kill flatdevtree.cDavid Gibson2007-12-111-1/+0
| | | | | | | | | Now that earlier patches have switched the bootwrapper to using libfdt for device tree manipulation, this patch removes the now unused flatdevtree.c and related files. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Use embedded libfdt in the bootwrapperDavid Gibson2007-12-111-0/+1
| | | | | | | | | | | | | | | This incorporates libfdt (from the source embedded in an earlier commit) into the wrapper.a library used by the bootwrapper. This includes adding a libfdt_env.h file, which the libfdt sources need in order to integrate into the bootwrapper environment, and a libfdt-wrapper.c which provides glue to connect the bootwrapper's abstract device tree callbacks to the libfdt functions. In addition, this changes the various wrapper and platform files to use libfdt functions instead of the older flatdevtree.c library. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Virtex: Add uartlite bootwrapper driverGrant Likely2007-10-031-0/+1
| | | | | | | Allows the bootwrapper to use the uartlite device for console output. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* [POWERPC] bootwrapper: Factor out dt_set_mac_address()Scott Wood2007-10-031-0/+1
| | | | | | | | | This allows callers to set addresses one at a time when that would be more convenient. 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>
* [POWERPC] mpc5200: Add cuimage support for mpc5200 boardsGrant Likely2007-09-221-0/+1
| | | | | | Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] bootwrapper: Add get_path()Scott Wood2007-09-141-0/+9
| | | | | | | | | This will be used by the PlanetCore firmware support to construct a linux,stdout-path from the serial node that it finds. 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>
* [POWERPC] bootwrapper: Add PowerQUICC II (82xx with CPM) cuboot supportScott Wood2007-08-221-0/+9
| | | | | | | | | | | | This allows booting on legacy, non-device-tree aware versions of U-boot. It also fixes up the hardware to match the PCI and chipselect information in the device tree, as u-boot is inconsistent in setting these up correctly (or at all). 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>
* [POWERPC] bootwrapper: Move linker symbols into ops.hScott Wood2007-08-221-0/+10
| | | | | | | | Most of these were previously used by numerous C files and redeclared in each one. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] bootwrapper: Add CPM serial driverScott Wood2007-08-221-0/+1
| | | | | | | | | | | This serial port is used on all 8xx, many 82xx, and some 85xx chips. The driver requires that the port has already been set up by the firmware and/or platform code. 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>
* [POWERPC] bootwrapper: Declare udelay() in ops.hScott Wood2007-08-221-0/+1
| | | | | | | Declarations in various users are removed. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] bootwrapper: Add dt_is_compatible()Scott Wood2007-08-221-0/+1
| | | | | | | | | This can be used rather than doing a simple strcmp, which will fail to handle multiple compatible entries. 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>
* [POWERPC] bootwrapper: Set timebase_period_ns from dt_fixup_cpu_clocksScott Wood2007-08-221-0/+2
| | | | | | | | This lets udelay() work properly on platforms which use dt_fixup_cpu_clocks. 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>
* [POWERPC] Make kernel_entry_t have global scope in bootwrapperGeoff Levand2007-06-281-0/+2
| | | | | | | | For the convenience of custom platform code make the powerpc bootwrapper typdef kernel_entry_t global in scope. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix constantness of bootwrapper argGeoff Levand2007-06-281-1/+1
| | | | | | | | Fixes the constantness of the powerpc bootwrapper's console_ops.write routine. Allows printing of constant strings. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add bootwrapper support for Marvell MPSCMark A. Greer2007-05-121-0/+1
| | | | | | | | | The bootwrapper requires a serial driver to allow cmdline editing and information reporting on the console. This driver is required by platforms that boot a zImage and use the MPSC for the console. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add dt_xlate_addr() to bootwrapperMark A. Greer2007-04-301-2/+2
| | | | | | | | | dt_xlate_reg() looks up the 'reg' property in the specified node to get the address and size to translate. Add dt_xlate_addr() which is passed in the address and size to translate. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] bootwrapper: Use `unsigned long' for malloc sizesGeert Uytterhoeven2007-04-241-4/+4
| | | | | | | | | Use `unsigned long' for malloc sizes, to match common practice and types used by most callers and callees. Also use `unsigned long' for integers representing pointers in simple_alloc. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@eu.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Routine to find the devtree node of a linux,phandleMark A. Greer2007-04-131-0/+6
| | | | | Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] bootwrapper: Add dt_xlate_reg(), and use it to find serial registers.Scott Wood2007-04-131-0/+2
| | | | | | | | | | dt_xlate_reg() uses the ranges properties of a node's parentage to find the absolute physical address of the node's registers. The ns16550 driver uses this when no virtual-reg property is found. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Clean up zImage handling of the command lineDavid Gibson2007-04-131-0/+2
| | | | | | | | | | | | | | | | | | | This cleans up how the zImage code manipulates the kernel command line. Notable improvements from the old handling: - Command line manipulation is consolidated into a new prep_cmdline() function, rather than being scattered across start() and some helper functions - Less stack space use: we use just a single global command line buffer, which can be initialized by an external tool as before, we no longer need another command line sized buffer on the stack. - Easier to support platforms whose firmware passes a commandline, but not a device tree. Platform code can now point new loader_info fields to the firmware's command line, rather than having to do early manipulation of the /chosen bootargs property which may then be rewritten again by the core. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Add device tree utility functions to zImageDavid Gibson2007-04-131-0/+13
| | | | | | | | | | | | | | This patch adds a library of useful device tree manipulation functions to the zImage library, for use by platform code. These functions are based on the hooks already in dt_ops, so they're not dependent on a particular device tree implementation. This patch also slightly streamlines the code in main.c using these new functions. This is a consolidation of my work in this area with Scott Wood's patches to a very similar end. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] New reg.h for the zImageDavid Gibson2007-03-261-1/+1
| | | | | | | | | | | This patch adds a reg.h to the zImage code, with common definitions for accessing system registers. For now, this includes functions for retrieving the PVR and the stack pointer. This patch then uses the new reg.h to let start() display the running stack address without having to explicitly pass the stack as a parameter from the asm code. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] bootwrapper: Add a fatal error helperMilton Miller2007-03-261-0/+2
| | | | | | | | | Add a macro fatal that calls printf then exit. User must include stdio.h. Typically replaces 3 lines with 1, although I added back some whitespace. Signed-off-by: Milton Miller <miltonm@bga.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] boot: export flush_cacheMilton Miller2007-03-211-1/+1
| | | | | | | | Move the declaration of flush_cache to ops.h for use by platform code. Signed-off-by: Milton Miller <miltonm@bga.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] bootwrapper: Make setprop accept a const buffer.Scott Wood2007-03-211-1/+2
| | | | | | 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>
* [POWERPC] bootwrapper: Add dt_ops methods.Scott Wood2007-03-211-0/+51
| | | | | | | | | | | Add get_parent, create_node, and find_node_by_prop_value to dt_ops. Currently only implemented by flatdevtree_misc. Also, add a _str convenience wrapper for setprop. 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>
* [POWERPC] bootwrapper: Add stddef.h to ops.hScott Wood2007-03-131-0/+1
| | | | | | | | | | ops.h references NULL, so include stddef.h, so files including ops.h don't have to. Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Mark A. Greer <mgreer@mvista.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] zImage: Cleanup and improve zImage entry pointDavid Gibson2007-03-131-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* [POWERPC] zImage: Cleanup and improve prep_kernel()David Gibson2007-03-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | This patch rewrites prep_kernel() in the zImage wrapper code to be clearer and more flexible. Notable changes: - Handling of the initrd image from prep_kernel() has moved into a new prep_initrd() function. - The address of the initrd image is now added as device tree properties, as the kernel expects. - We only copy a packaged initrd image to a new location if it is in danger of being clobbered when the kernel moves to its final location, instead of always. - By default we decompress the kernel directly to address 0, instead of requiring it to relocate itself. Platforms (such as OF) where doing this could clobber still-live firmware data structures can override the vmlinux_alloc hook to provide an alternate place to decompress the kernel. - We no longer pass lots of information between functions in global variables. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Cleanup zImage handling of kernel entry with flat device treeDavid Gibson2006-12-041-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This makes 2 changes to clean up the flat device tree handling logic in the zImage wrapper. First, there were two callbacks from the dt_ops structure used for producing a final flat tree to pass to the kerne: dt_ops.ft_pack() which packed the flat tree (possibly a no-op) and dt_ops.ft_addr() which retreived the address of the final blob. Since they were only ever called together, this patch combines the two into a single new callback, dt_ops.finalize(). This new callback does whatever platform-dependent things are necessary to produce a final flat device tree blob, and returns the blob's addres. Second, the current logic calls the kernel with a flat device tree if one is build into the zImage wrapper, otherwise it boots the kernel with a PROM pointer, expecting the kernel to copy the OF device tree itself. This approach precludes the possibility of the platform wrapper code building a flat device tree from whatever platform-specific information firmware provides. Thus, this patch takes the more sensible approach of invoking the kernel with a flat tree if the dt_ops.finalize callback provides one (by whatever means). So, the dt_ops.finalize callback can be NULL, or can be a function which returns NULL. In either case, the zImage wrapper logic assumes that this is a platform with OF and invokes the kernel accordingly. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] More bootwrapper reorganizationMark A. Greer2006-10-181-11/+14
| | | | | | | | | | | | | 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>
* [POWERPC] Start arch/powerpc/boot code reorganizationMark A. Greer2006-09-201-0/+100
This abstracts the operations used in the bootwrapper, and defines the operations needed for the bootwrapper to run on an OF platform. The operations have been divided up into platform ops (platform_ops), firmware ops (fw_ops), device tree ops (dt_ops), and console ops (console_ops). The proper operations will be hooked up at runtime to provide the functionality that you need. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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