lwn.git/arch/ppc64/boot/main.c, branch v3.2.46

powerpc: Move ppc64 boot wrapper code over to arch/powerpc

2005-11-16T02:52:21+00:00

This also extends the code to handle 32-bit ELF vmlinux files as well as 64-bit ones. This is sufficient for booting on new-world 32-bit powermacs (i.e. all recent machines). Signed-off-by: Paul Mackerras

[PATCH] ppc64: Fix zImage boot

2005-11-07T15:53:23+00:00

The zImage wrapper has a bug where it doesn't claim() the memory for the kernel properly, it forgets to take into account the offset between the ELF header and the kernel itself. This results on some machines, like G5s, into a kernel that crashes at boot when clearing the BSS. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] ppc64 boot: print firmware provided stackpointer

2005-10-29T05:11:35+00:00

Show firmware provided stackpointer during boot. This helps to find the "taboo" areas on the various boards. claim tends to fail for these memory areas, but some jokers return success anyway. Use %p to print the load address, its a pointer. Signed-off-by: Olaf Hering Cc: Benjamin Herrenschmidt Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[PATCH] ppc64 boot: remove global initializers

2005-10-29T05:08:03+00:00

No need to initialize global variables. Signed-off-by: Olaf Hering Cc: Benjamin Herrenschmidt Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[PATCH] ppc64 boot: use memset to clear bss

2005-10-29T05:07:38+00:00

Use memset to clear bss, instead of own version. Signed-off-by: Olaf Hering Cc: Benjamin Herrenschmidt Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[PATCH] ppc64 boot: move gunzip function before use

2005-10-29T05:05:43+00:00

Move the gunzip function up. Signed-off-by: Olaf Hering Cc: Benjamin Herrenschmidt Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[PATCH] ppc64 boot: remove need for imagesize.c

2005-10-29T05:05:10+00:00

Compute the vmlinux size at runtime. Use Z_FULL_FLUSH instead of Z_FINISH, to extract only the ELF header and ELF program header. ->p_memsz is the required memory range for the executable, including bss ->p_filesz is the size of .text, .data and other runtime sections These values must be used for the claim call. All additional memory needed by the kernel is claimed in prom_init, remove the extra Mb. Pass the full memsize as target area to gunzip, otherwise not everything will be uncompressed. flush_cache has to flush all runtime sections, do not reduce the memrange by the ->p_offset value because its just that: an offset. Remove the Makefile code to produce an imagesize.c, its not needed anymore. Remove all FORCE flags, to not rebuild the zImage if vmlinux was not changed. Signed-off-by: Olaf Hering Cc: Benjamin Herrenschmidt Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[PATCH] ppc64 boot: remove zlib

2005-10-29T05:04:43+00:00

Switch ppc64 to the in-kernel zlib, it has less bugs than the current one. The code in arch/ppc64/boot is compiled as 32bit, so it can not use the includes from include/asm. Copy all zlib related header files and convert them with sed. Reduce the scratch size to 47k, check possible changes at runtime. Signed-off-by: Olaf Hering Cc: Benjamin Herrenschmidt Cc: Anton Blanchard Signed-off-by: Andrew Morton Signed-off-by: Paul Mackerras

[PATCH] PPC64: large INITRD causes kernel not to boot

2005-09-09T12:11:37+00:00

In PPC64 there are number of problems in arch/ppc64/boot/main.c that prevent a kernel from making use of a large (greater than ~16MB) INITRD. This is 64 bit architecture and really large INITRD images should be possible. Simply put the existing code has a fixed reservation (claim) address and once the kernel plus initrd image are large enough to pass this address all sorts of bad things occur. The fix is the dynamically establish the first claim address above the loaded kernel plus initrd (plus some "padding" and rounding). If PROG_START is defined this will be used as the minimum safe address - currently known to be 0x01400000 for the firmwares tested so far. Signed-off-by: Mark Bellon Signed-off-by: Paul Mackerras

[PATCH] ppc64: make arch/ppc64/boot standalone

2005-08-29T00:53:31+00:00

Make the bootheader for ppc64 independent from kernel and libc headers. * add -nostdinc -isystem $gccincludes to not include libc headers * declare all functions in header files, also the stuff from string.S * declare some functions static * use stddef.h to get size_t (hopefully ok) * remove ppc32-types.h, only elf.h used the __NN types With further modifications by Paul Mackerras and Stephen Rothwell. Signed-off-by: Olaf Hering Signed-off-by: Paul Mackerras