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Save the physical address passed into the kernel of the UEFI system

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table.
This commit is contained in:
Warner Losh 2015-12-19 19:01:43 +00:00
parent 7a80f343f3
commit 2fca0f2dd4
2 changed files with 10 additions and 0 deletions
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9
sys/amd64/amd64/machdep.c
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@ -188,6 +188,12 @@ extern char kernphys[];
struct msgbuf *msgbufp;
/*
* Physical address of the EFI System Table. Stashed from the metadata hints
* passed into the kernel and used by the EFI code to call runtime services.
*/
vm_paddr_t efi_systbl;
/* Intel ICH registers */
#define ICH_PMBASE 0x400
#define ICH_SMI_EN ICH_PMBASE + 0x30
@ -1495,6 +1501,7 @@ native_parse_preload_data(u_int64_t modulep)
ksym_end = MD_FETCH(kmdp, MODINFOMD_ESYM, uintptr_t);
db_fetch_ksymtab(ksym_start, ksym_end);
#endif
efi_systbl = MD_FETCH(kmdp, MODINFOMD_FW_HANDLE, vm_paddr_t);
return (kmdp);
}
@ -1615,6 +1622,8 @@ hammer_time(u_int64_t modulep, u_int64_t physfree)
/*
* Use vt(4) by default for UEFI boot (during the sc(4)/vt(4)
* transition).
* Once bootblocks have updated, we can test directly for
* efi_systbl != NULL here...
*/
if (preload_search_info(kmdp, MODINFO_METADATA | MODINFOMD_EFI_MAP)
!= NULL)

1
sys/sys/efi.h
View File

@ -151,4 +151,5 @@ struct efi_systbl {
uint64_t st_cfgtbl;
};
extern vm_paddr_t efi_systbl;
#endif /* _SYS_EFI_H_ */