mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 11:56:46 +07:00
4e78eb0561
The 32 bit and 64 bit implementations differ in their __init annotations
for some functions referenced from the common EFI code. Namely, the 32
bit variant is missing some of the __init annotations the 64 bit variant
has.
To solve the colliding annotations, mark the corresponding functions in
efi_32.c as initialization code, too -- as it is such.
Actually, quite a few more functions are only used during initialization
and therefore can be marked __init. They are therefore annotated, too.
Also add the __init annotation to the prototypes in the efi.h header so
users of those functions will see it's meant as initialization code
only.
This patch also fixes the "prelog" typo. ("prologue" / "epilogue" might
be more appropriate but this is C code after all, not an opera! :D)
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
|
|
* Extensible Firmware Interface
|
|
*
|
|
* Based on Extensible Firmware Interface Specification version 1.0
|
|
*
|
|
* Copyright (C) 1999 VA Linux Systems
|
|
* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
|
|
* Copyright (C) 1999-2002 Hewlett-Packard Co.
|
|
* David Mosberger-Tang <davidm@hpl.hp.com>
|
|
* Stephane Eranian <eranian@hpl.hp.com>
|
|
*
|
|
* All EFI Runtime Services are not implemented yet as EFI only
|
|
* supports physical mode addressing on SoftSDV. This is to be fixed
|
|
* in a future version. --drummond 1999-07-20
|
|
*
|
|
* Implemented EFI runtime services and virtual mode calls. --davidm
|
|
*
|
|
* Goutham Rao: <goutham.rao@intel.com>
|
|
* Skip non-WB memory and ignore empty memory ranges.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/efi.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/desc.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/tlbflush.h>
|
|
#include <asm/efi.h>
|
|
|
|
/*
|
|
* To make EFI call EFI runtime service in physical addressing mode we need
|
|
* prolog/epilog before/after the invocation to disable interrupt, to
|
|
* claim EFI runtime service handler exclusively and to duplicate a memory in
|
|
* low memory space say 0 - 3G.
|
|
*/
|
|
static unsigned long efi_rt_eflags;
|
|
|
|
void efi_sync_low_kernel_mappings(void) {}
|
|
void __init efi_dump_pagetable(void) {}
|
|
int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
|
|
{
|
|
return 0;
|
|
}
|
|
void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages)
|
|
{
|
|
}
|
|
|
|
void __init efi_map_region(efi_memory_desc_t *md)
|
|
{
|
|
old_map_region(md);
|
|
}
|
|
|
|
void __init efi_map_region_fixed(efi_memory_desc_t *md) {}
|
|
void __init parse_efi_setup(u64 phys_addr, u32 data_len) {}
|
|
|
|
void __init efi_call_phys_prolog(void)
|
|
{
|
|
struct desc_ptr gdt_descr;
|
|
|
|
local_irq_save(efi_rt_eflags);
|
|
|
|
load_cr3(initial_page_table);
|
|
__flush_tlb_all();
|
|
|
|
gdt_descr.address = __pa(get_cpu_gdt_table(0));
|
|
gdt_descr.size = GDT_SIZE - 1;
|
|
load_gdt(&gdt_descr);
|
|
}
|
|
|
|
void __init efi_call_phys_epilog(void)
|
|
{
|
|
struct desc_ptr gdt_descr;
|
|
|
|
gdt_descr.address = (unsigned long)get_cpu_gdt_table(0);
|
|
gdt_descr.size = GDT_SIZE - 1;
|
|
load_gdt(&gdt_descr);
|
|
|
|
load_cr3(swapper_pg_dir);
|
|
__flush_tlb_all();
|
|
|
|
local_irq_restore(efi_rt_eflags);
|
|
}
|
|
|
|
void __init efi_runtime_mkexec(void)
|
|
{
|
|
if (__supported_pte_mask & _PAGE_NX)
|
|
runtime_code_page_mkexec();
|
|
}
|