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Fix excise_initrd_region() to support 32- and 64-bit initrd params.

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Changed excise_initrd_region to support both 32- and 64-bit
values for linux,initrd-start and linux,initrd-end.

This fixes the boot problem on some machines after rS334485.

Submitted by: Luis Pires <lffpires@ruabrasil.org>
Reviewed by: jhibbits, leitao
Approved by: jhibbits (mentor)
Differential Revision: https://reviews.freebsd.org/D15667
This commit is contained in:
Breno Leitao 2018-06-07 21:24:21 +00:00
parent 401e870791
commit 6d645c57a3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=334816
1 changed files with 28 additions and 5 deletions
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33
sys/powerpc/ofw/ofw_machdep.c
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@ -297,14 +297,37 @@ excise_initrd_region(struct mem_region *avail, int asz)
uint64_t start, end;
ssize_t size;
struct mem_region initrdmap[1];
pcell_t cell[2];
chosen = OF_finddevice("/chosen");
size = OF_getprop(chosen, "linux,initrd-start", &start, sizeof(start));
if (size <= 0)
return (asz);
size = OF_getprop(chosen, "linux,initrd-end", &end, sizeof(end));
if (size <= 0)
size = OF_getencprop(chosen, "linux,initrd-start", cell, sizeof(cell));
if (size < 0)
return (asz);
else if (size == 4)
start = cell[0];
else if (size == 8)
start = (uint64_t)cell[0] << 32 | cell[1];
else {
/* Invalid value length */
printf("WARNING: linux,initrd-start must be either 4 or 8 bytes long\n");
return (asz);
}
size = OF_getencprop(chosen, "linux,initrd-end", cell, sizeof(cell));
if (size < 0)
return (asz);
else if (size == 4)
end = cell[0];
else if (size == 8)
end = (uint64_t)cell[0] << 32 | cell[1];
else {
/* Invalid value length */
printf("WARNING: linux,initrd-end must be either 4 or 8 bytes long\n");
return (asz);
}
if (end <= start)
return (asz);
initrdmap[0].mr_start = start;