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Exclude the EFI framebuffer from phys_avail[] on arm64.

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On the ThunderX the region occupied by the framebuffer is included in
the EFI map, so explicitly add it to the set of regions that aren't
managed by the physical memory allocator.

PR:		231064
Reviewed by:	andrew
Approved by:	re (gjb)
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D17073
This commit is contained in:
markj 2018-09-08 21:52:44 +00:00
parent 8062037ce7
commit 3dcd4f12ac
1 changed files with 8 additions and 0 deletions
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8
sys/arm64/arm64/machdep.c
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@ -982,6 +982,7 @@ cache_setup(void)
void
initarm(struct arm64_bootparams *abp)
{
struct efi_fb *efifb;
struct efi_map_header *efihdr;
struct pcpu *pcpup;
char *env;
@ -1031,6 +1032,13 @@ initarm(struct arm64_bootparams *abp)
EXFLAG_NODUMP | EXFLAG_NOALLOC);
#endif
/* Exclude the EFI framebuffer from our view of physical memory. */
efifb = (struct efi_fb *)preload_search_info(kmdp,
MODINFO_METADATA | MODINFOMD_EFI_FB);
if (efifb != NULL)
arm_physmem_exclude_region(efifb->fb_addr, efifb->fb_size,
EXFLAG_NOALLOC);
/* Set the pcpu data, this is needed by pmap_bootstrap */
pcpup = &__pcpu[0];
pcpu_init(pcpup, 0, sizeof(struct pcpu));