Differential D5866 Diff 14946 sys/boot/efi/loader/arch/amd64/elf64_freebsd.c

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sys/boot/efi/loader/arch/amd64/elf64_freebsd.c

Show First 20 Lines • Show All 95 Lines • ▼ Show 20 Lines	elf64_exec(struct preloaded_file *fp)
struct file_metadata *md;		struct file_metadata *md;
Elf_Ehdr *ehdr;		Elf_Ehdr *ehdr;
vm_offset_t modulep, kernend, trampcode, trampstack;		vm_offset_t modulep, kernend, trampcode, trampstack;
int err, i;		int err, i;
ACPI_TABLE_RSDP *rsdp;		ACPI_TABLE_RSDP *rsdp;
char buf[24];		char buf[24];
int revision;		int revision;

		/*
		* Report the RSDP to the kernel. While this can be found with
		* a BIOS boot, the RSDP may be elsewhere when booted from UEFI.
		* The old code used the 'hints' method to communite this to
		* the kernel. However, while convenient, the 'hints' method
		* is fragile and does not work when static hints are compiled
		* into the kernel. Instead, move to setting different tunables
		* that start with acpi. The old 'hints' can be removed before
		* we branch for FreeBSD 12.
		*/

rsdp = efi_get_table(&acpi20_guid);		rsdp = efi_get_table(&acpi20_guid);
if (rsdp == NULL) {		if (rsdp == NULL) {
rsdp = efi_get_table(&acpi_guid);		rsdp = efi_get_table(&acpi_guid);
}		}
if (rsdp != NULL) {		if (rsdp != NULL) {
sprintf(buf, "0x%016llx", (unsigned long long)rsdp);		sprintf(buf, "0x%016llx", (unsigned long long)rsdp);
setenv("hint.acpi.0.rsdp", buf, 1);		setenv("hint.acpi.0.rsdp", buf, 1);
		setenv("acpi.rsdp", buf, 1);
revision = rsdp->Revision;		revision = rsdp->Revision;
if (revision == 0)		if (revision == 0)
revision = 1;		revision = 1;
sprintf(buf, "%d", revision);		sprintf(buf, "%d", revision);
setenv("hint.acpi.0.revision", buf, 1);		setenv("hint.acpi.0.revision", buf, 1);
		setenv("acpi.revision", buf, 1);
strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId));		strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId));
buf[sizeof(rsdp->OemId)] = '\0';		buf[sizeof(rsdp->OemId)] = '\0';
setenv("hint.acpi.0.oem", buf, 1);		setenv("hint.acpi.0.oem", buf, 1);
		setenv("acpi.oem", buf, 1);
sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress);		sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress);
setenv("hint.acpi.0.rsdt", buf, 1);		setenv("hint.acpi.0.rsdt", buf, 1);
		setenv("acpi.rsdt", buf, 1);
if (revision >= 2) {		if (revision >= 2) {
/* XXX extended checksum? */		/* XXX extended checksum? */
sprintf(buf, "0x%016llx",		sprintf(buf, "0x%016llx",
(unsigned long long)rsdp->XsdtPhysicalAddress);		(unsigned long long)rsdp->XsdtPhysicalAddress);
setenv("hint.acpi.0.xsdt", buf, 1);		setenv("hint.acpi.0.xsdt", buf, 1);
		setenv("acpi.xsdt", buf, 1);
sprintf(buf, "%d", rsdp->Length);		sprintf(buf, "%d", rsdp->Length);
setenv("hint.acpi.0.xsdt_length", buf, 1);		setenv("hint.acpi.0.xsdt_length", buf, 1);
		setenv("acpi.xsdt_length", buf, 1);
}		}
}		}

if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)		if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
return(EFTYPE);		return(EFTYPE);
ehdr = (Elf_Ehdr *)&(md->md_data);		ehdr = (Elf_Ehdr *)&(md->md_data);

trampcode = (vm_offset_t)0x0000000040000000;		trampcode = (vm_offset_t)0x0000000040000000;
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