Milton Miller wrote:
My current (working) solution is to move cuImage from 4 MiB to 8 MiB.
Something similar has been done for pSeries in 9b09c6d "powerpc: Change
the default link address for pSeries zImage kernels". Would it be
appropriate to move initial address to 64 MiB as the default loading
address or do we have here some boards which have only 64 MiB of memory?
I think there are some boards that have even less (8xx?). Is the
link address a wrapper option yet?
Nope. The wrapper script distinguishes between platforms. Default is 4MiB,
pSeries has 64MiB, coff does 5MiB and the PS3 has other magic.
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -56,7 +56,7 @@ static struct addr_range prep_kernel(void)
if (platform_ops.vmlinux_alloc) {
addr = platform_ops.vmlinux_alloc(ei.memsize);
} else {
- if ((unsigned long)_start < ei.memsize)
+ if ((unsigned long)_start < ei.loadsize)
I think this needs to be a two part test (add approprate casts):
_start < ei.loadsize || _end < ei.memsize
.. and a comment explaining why.
okay.
We could do better if we kept allocating more memory until we got
above it, but the current code has no such provision. (prpmc2800, or
one of those, actually decompresses the header to peek at memsize
before starting the simple_alloc code).
I don't thing I can follow. Do you want to move the bootwrapper code above
the limit and recall it?
Sebastian
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