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[POWERPC] Fix BootX booting with an initrd 

The bootx_init.c trampoline didn't properly add the ramdisk to the
"reserve map" (list of reserved areas of memory), thus causing all sorts
of failures when using BootX with an initrd. Also fixes a possible
problem if the ramdisk is located before the device-tree passed by
BootX.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
hifive-unleashed-5.1
Benjamin Herrenschmidt 2006-08-23 11:45:12 +10:00 committed by Paul Mackerras
parent 5db9fa9593
commit 6cdd2bdfb9
1 changed files with 11 additions and 4 deletions
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15
arch/powerpc/platforms/powermac/bootx_init.c
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@ -411,8 +411,15 @@ static unsigned long __init bootx_flatten_dt(unsigned long start)
DBG("End of boot params: %x\n", mem_end);
rsvmap[0] = mem_start;
rsvmap[1] = mem_end;
rsvmap[2] = 0;
rsvmap[3] = 0;
if (bootx_info->ramDisk) {
rsvmap[2] = ((unsigned long)bootx_info) + bootx_info->ramDisk;
rsvmap[3] = rsvmap[2] + bootx_info->ramDiskSize;
rsvmap[4] = 0;
rsvmap[5] = 0;
} else {
rsvmap[2] = 0;
rsvmap[3] = 0;
}
return (unsigned long)hdr;
}
@ -543,12 +550,12 @@ void __init bootx_init(unsigned long r3, unsigned long r4)
*/
if (bi->version < 5) {
space = bi->deviceTreeOffset + bi->deviceTreeSize;
if (bi->ramDisk)
if (bi->ramDisk >= space)
space = bi->ramDisk + bi->ramDiskSize;
} else
space = bi->totalParamsSize;
bootx_printf("Total space used by parameters & ramdisk: %x \n", space);
bootx_printf("Total space used by parameters & ramdisk: 0x%x \n", space);
/* New BootX will have flushed all TLBs and enters kernel with
* MMU switched OFF, so this should not be useful anymore.