kernel/arch/powerpc/boot/main.c, branch linux-4.3.y

powerpc/boot: Parse chosen/cmdline-timeout parameter

2014-11-09T22:59:30Z

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 [mpe: Changelog wording & whitespace] Signed-off-by: Michael Ellerman

powerpc: Rename duplicate COMMAND_LINE_SIZE define

2014-04-28T06:31:54Z

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 Signed-off-by: Benjamin Herrenschmidt

powerpc: Fix format string warning in arch/powerpc/boot/main.c

2008-10-31T09:14:19Z

Fix format string warning in arch/powerpc/boot/main.c. Also correct a typo ("uncomressed") on the same line. BOOTCC arch/powerpc/boot/main.o arch/powerpc/boot/main.c: In function 'prep_kernel': arch/powerpc/boot/main.c:65: warning: format '%08x' expects type 'unsigned int', but argument 3 has type 'long unsigned int' Signed-off-by: Jon Smirl Acked-by: David Gibson Signed-off-by: Paul Mackerras

powerpc/boot: Compare _start against ei.loadsize instead ei.memsize

2008-10-21T04:17:47Z

If the vmlinux binary in memory is larger than 4 MiB than it collides with the initial boot code which is linked at 4 MiB in case of cuBoot. If the the uncompressed image size (on disk size) is less than 4 MiB then it would fit. The difference between those two sizes is the bss section. In cuBoot we have the dtb embedded right after the data section so it is very likely that the reset of the bss section (in kernel's start up code) will overwrite the dtb blob. Therefore we reallocate the dtb. Something similar is allready done to the initrd. Signed-off-by: Sebastian Andrzej Siewior Acked-by: David Gibson Signed-off-by: Benjamin Herrenschmidt

[POWERPC] Kill flatdevtree.c

2007-12-11T02:46:15Z

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 Signed-off-by: Paul Mackerras

[POWERPC] bootwrapper: Move linker symbols into ops.h

2007-08-22T05:27:28Z

Most of these were previously used by numerous C files and redeclared in each one. Signed-off-by: Scott Wood Signed-off-by: Paul Mackerras

[POWERPC] Make kernel_entry_t have global scope in bootwrapper

2007-06-28T09:16:50Z

For the convenience of custom platform code make the powerpc bootwrapper typdef kernel_entry_t global in scope. Signed-off-by: Geoff Levand Signed-off-by: Paul Mackerras

[POWERPC] bootwrapper: Decompress less, check more

2007-04-12T17:55:17Z

Our kernels put everything in the first load segment, and we read that. Instead of decompressing to the end of the gzip stream or supplied image and hoping we get it all, decompress the expected size and complain if it is not available. Signed-off-by: Milton Miller Signed-off-by: Paul Mackerras

[POWERPC] Move bootwrapper ELF parsing routines to a file

2007-04-12T17:55:16Z

The ELF parsing routines local to arch/powerpc/boot/main.c are useful to other callers therefore move them to their own file. Signed-off-by: Mark A. Greer Signed-off-by: Paul Mackerras

[POWERPC] Clean up zImage handling of the command line

2007-04-12T17:55:14Z

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 Signed-off-by: Paul Mackerras