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#include <xen/efi.h>
#include <xen/errno.h>
#include <xen/init.h>
#include <xen/lib.h>
#include <asm/asm_defns.h>
#include <asm/efibind.h>
#include <asm/page.h>
#include <efi/efidef.h>
#include <efi/eficapsule.h>
#include <efi/eficon.h>
#include <efi/efidevp.h>
#include <efi/efiapi.h>
/*
* Here we are in EFI stub. EFI calls are not supported due to lack
* of relevant functionality in compiler and/or linker.
*
* efi_multiboot2() is an exception. Please look below for more details.
*/
void __init noreturn efi_multiboot2(EFI_HANDLE ImageHandle,
EFI_SYSTEM_TABLE *SystemTable)
{
static const CHAR16 __initconst err[] =
L"Xen does not have EFI code build in!\r\nSystem halted!\r\n";
SIMPLE_TEXT_OUTPUT_INTERFACE *StdErr;
StdErr = SystemTable->StdErr ? SystemTable->StdErr : SystemTable->ConOut;
/*
* Print error message and halt the system.
*
* We have to open code MS x64 calling convention
* in assembly because here this convention may
* not be directly supported by C compiler.
*/
asm volatile(
" call *%[outstr] \n"
"0: hlt \n"
" jmp 0b \n"
: "+c" (StdErr), "=d" (StdErr) ASM_CALL_CONSTRAINT
: "1" (err), [outstr] "rm" (StdErr->OutputString)
: "rax", "r8", "r9", "r10", "r11", "memory");
unreachable();
}
bool efi_enabled(unsigned int feature)
{
return false;
}
void __init efi_init_memory(void) { }
bool efi_boot_mem_unused(unsigned long *start, unsigned long *end)
{
*start = *end = (unsigned long)_end;
return false;
}
void efi_update_l4_pgtable(unsigned int l4idx, l4_pgentry_t l4e) { }
bool efi_rs_using_pgtables(void)
{
return false;
}
unsigned long efi_get_time(void)
{
BUG();
return 0;
}
void efi_halt_system(void) { }
void efi_reset_system(bool warm) { }
int efi_get_info(uint32_t idx, union xenpf_efi_info *info)
{
return -ENOSYS;
}
int efi_compat_get_info(uint32_t idx, union compat_pf_efi_info *)
__attribute__((__alias__("efi_get_info")));
int efi_runtime_call(struct xenpf_efi_runtime_call *op)
{
return -ENOSYS;
}
int efi_compat_runtime_call(struct compat_pf_efi_runtime_call *)
__attribute__((__alias__("efi_runtime_call")));
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