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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:
Mark Johnston 2018-09-08 21:52:44 +00:00
parent 88db0afa82
commit 31184bcd68
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=338538
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));