Author: jhibbits
Date: Mon Dec 3 04:56:06 2018
New Revision: 341423
URL: https://svnweb.freebsd.org/changeset/base/341423
Log:
powerpc: Check for a fdt in the metadata if it doesn't already exist
It's possible the fdt pointer was passed in via the metadata, as is done in
ubldr. Check for the fdt here, instead of working with a NULL fdt, and
panicking.
Modified:
head/sys/powerpc/powerpc/machdep.c
Modified: head/sys/powerpc/powerpc/machdep.c
==============================================================================
--- head/sys/powerpc/powerpc/machdep.c Mon Dec 3 04:47:28 2018
(r341422)
+++ head/sys/powerpc/powerpc/machdep.c Mon Dec 3 04:56:06 2018
(r341423)
@@ -137,6 +137,10 @@ int cacheline_size = 32;
#endif
int hw_direct_map = 1;
+#ifdef BOOKE
+extern vm_paddr_t kernload;
+#endif
+
extern void *ap_pcpu;
struct pcpu __pcpu[MAXCPU];
@@ -295,6 +299,8 @@ powerpc_init(vm_offset_t fdt, vm_offset_t toc, vm_offs
#ifdef AIM
if ((uintptr_t)&powerpc_init > DMAP_BASE_ADDRESS)
md_offset = DMAP_BASE_ADDRESS;
+#else /* BOOKE */
+ md_offset = VM_MIN_KERNEL_ADDRESS - kernload;
#endif
preload_metadata = mdp;
@@ -309,6 +315,11 @@ powerpc_init(vm_offset_t fdt, vm_offset_t toc, vm_offs
if (envp != NULL)
envp += md_offset;
init_static_kenv(envp, 0);
+ if (fdt == 0) {
+ fdt = MD_FETCH(kmdp, MODINFOMD_DTBP, uintptr_t);
+ if (fdt != 0)
+ fdt += md_offset;
+ }
kernelendphys = MD_FETCH(kmdp, MODINFOMD_KERNEND,
vm_offset_t);
if (kernelendphys != 0)
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