Differential D52434 Diff 161818 stand/efi/loader/main.c

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stand/efi/loader/main.c

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*		*
* We always fail if we can't find the right thing. However, as		* We always fail if we can't find the right thing. However, as
* a concession to buggy UEFI implementations, like u-boot, if		* a concession to buggy UEFI implementations, like u-boot, if
* we have determined that the host is violating the UEFI boot		* we have determined that the host is violating the UEFI boot
* manager protocol, we'll signal the rest of the program that		* manager protocol, we'll signal the rest of the program that
* a drop to the OK boot loader prompt is possible.		* a drop to the OK boot loader prompt is possible.
*/		*/
static int		static int
find_currdev(bool do_bootmgr, bool is_last,		find_currdev(bool do_bootmgr, char *boot_info, size_t boot_info_sz)
char *boot_info, size_t boot_info_sz)
{		{
pdinfo_t dp, pp;		pdinfo_t dp, pp;
EFI_DEVICE_PATH devpath, copy;		EFI_DEVICE_PATH devpath, copy;
EFI_HANDLE h;		EFI_HANDLE h;
CHAR16 *text;		CHAR16 *text;
struct devsw *dev;		struct devsw *dev;
int unit;		int unit;
uint64_t extra;		uint64_t extra;
▲ Show 20 Lines • Show All 679 Lines • ▼ Show 20 Lines	efi_smbios_detect(void)
if (smbios_v2_ptr != NULL)		if (smbios_v2_ptr != NULL)
(void)smbios_detect(smbios_v2_ptr);		(void)smbios_detect(smbios_v2_ptr);
}		}

EFI_STATUS		EFI_STATUS
main(int argc, CHAR16 *argv[])		main(int argc, CHAR16 *argv[])
{		{
int howto, i, uhowto;		int howto, i, uhowto;
bool has_kbd, is_last;		bool has_kbd;
char *s;		char *s;
EFI_DEVICE_PATH *imgpath;		EFI_DEVICE_PATH *imgpath;
CHAR16 *text;		CHAR16 *text;
EFI_STATUS rv;		EFI_STATUS rv;
size_t sz, bisz = 0;		size_t sz, bisz = 0;
UINT16 boot_order[100];		UINT16 boot_order[100];
char boot_info[4096];		char boot_info[4096];
char buf[32];		char buf[32];
▲ Show 20 Lines • Show All 186 Lines • ▼ Show 20 Lines	if (getenv("uefi_ignore_boot_mgr") != NULL) {
sz = sizeof(boot_order);		sz = sizeof(boot_order);
rv = efi_global_getenv("BootOrder", &boot_order, &sz);		rv = efi_global_getenv("BootOrder", &boot_order, &sz);
if (rv == EFI_SUCCESS) {		if (rv == EFI_SUCCESS) {
printf(" BootOrder:");		printf(" BootOrder:");
for (i = 0; i < sz / sizeof(boot_order[0]); i++)		for (i = 0; i < sz / sizeof(boot_order[0]); i++)
printf(" %04x%s", boot_order[i],		printf(" %04x%s", boot_order[i],
boot_order[i] == boot_current ? "[*]" : "");		boot_order[i] == boot_current ? "[*]" : "");
printf("\n");		printf("\n");
is_last = boot_order[(sz / sizeof(boot_order[0])) - 1] == boot_current;
} else if (uefi_boot_mgr) {		} else if (uefi_boot_mgr) {
/*		/*
* u-boot doesn't set BootOrder, but otherwise participates in the		* u-boot doesn't set BootOrder, but otherwise participates in the
* boot manager protocol. So we fake it here and don't consider it		* boot manager protocol. So we fake it here and don't consider it
* a failure.		* a failure.
*/		*/
boot_order[0] = boot_current;		boot_order[0] = boot_current;
is_last = true;
}		}
}		}

/*		/*
* Next, find the boot info structure the UEFI boot manager is		* Next, find the boot info structure the UEFI boot manager is
* supposed to setup. We need this so we can walk through it to		* supposed to setup. We need this so we can walk through it to
* find where we are in the booting process and what to try to		* find where we are in the booting process and what to try to
* boot next.		* boot next.
Show All 32 Lines	#endif

/*		/*
* Try and find a good currdev based on the image that was booted.		* Try and find a good currdev based on the image that was booted.
* It might be desirable here to have a short pause to allow falling		* It might be desirable here to have a short pause to allow falling
* through to the boot loader instead of returning instantly to follow		* through to the boot loader instead of returning instantly to follow
* the boot protocol and also allow an escape hatch for users wishing		* the boot protocol and also allow an escape hatch for users wishing
* to try something different.		* to try something different.
*/		*/
if (find_currdev(uefi_boot_mgr, is_last, boot_info, bisz) != 0)		if (find_currdev(uefi_boot_mgr, boot_info, bisz) != 0)
if (uefi_boot_mgr &&		if (uefi_boot_mgr &&
!interactive_interrupt("Failed to find bootable partition"))		!interactive_interrupt("Failed to find bootable partition"))
return (EFI_NOT_FOUND);		return (EFI_NOT_FOUND);

autoload_font(false); /* Set up the font list for console. */		autoload_font(false); /* Set up the font list for console. */
efi_init_environment();		efi_init_environment();

interact(); /* doesn't return */		interact(); /* doesn't return */
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