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[POWERPC] bootwrapper: Decompress less, check more

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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 <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Milton Miller 2007-03-29 07:31:41 -06:00 committed by Paul Mackerras
parent 1383a34faf
commit 02cc51149f
1 changed files with 4 additions and 1 deletions
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5
arch/powerpc/boot/main.c
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@ -79,7 +79,10 @@ static struct addr_range prep_kernel(void)
vmlinuz_addr, vmlinuz_addr+vmlinuz_size);
/* discard up to the actual load data */
gunzip_discard(&gzstate, ei.elfoffset - sizeof(elfheader));
len = gunzip_finish(&gzstate, addr, ei.memsize);
len = gunzip_finish(&gzstate, addr, ei.loadsize);
if (len != ei.loadsize)
fatal("ran out of data! only got 0x%x of 0x%lx bytes.\n\r",
len, ei.loadsize);
printf("done 0x%x bytes\n\r", len);
flush_cache(addr, ei.loadsize);