mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-24 05:57:08 +07:00
136a9a0f74
Only early debug requires IMMR to be mapped early. No need to set it up and pin it in assembly. Map it through page tables at udbg init when necessary. If CONFIG_PIN_TLB_IMMR is selected, pin it once we don't need the 32 Mb pinned RAM anymore. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/13c1e8539fdf363d3146f4884e5c3c76c6c308b5.1589866984.git.christophe.leroy@csgroup.eu
194 lines
5.3 KiB
C
194 lines
5.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* Declarations of procedures and variables shared between files
|
|
* in arch/ppc/mm/.
|
|
*
|
|
* Derived from arch/ppc/mm/init.c:
|
|
* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
|
|
*
|
|
* Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au)
|
|
* and Cort Dougan (PReP) (cort@cs.nmt.edu)
|
|
* Copyright (C) 1996 Paul Mackerras
|
|
*
|
|
* Derived from "arch/i386/mm/init.c"
|
|
* Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds
|
|
*/
|
|
#include <linux/mm.h>
|
|
#include <asm/mmu.h>
|
|
|
|
#ifdef CONFIG_PPC_MMU_NOHASH
|
|
#include <asm/trace.h>
|
|
|
|
/*
|
|
* On 40x and 8xx, we directly inline tlbia and tlbivax
|
|
*/
|
|
#if defined(CONFIG_40x) || defined(CONFIG_PPC_8xx)
|
|
static inline void _tlbil_all(void)
|
|
{
|
|
asm volatile ("sync; tlbia; isync" : : : "memory");
|
|
trace_tlbia(MMU_NO_CONTEXT);
|
|
}
|
|
static inline void _tlbil_pid(unsigned int pid)
|
|
{
|
|
asm volatile ("sync; tlbia; isync" : : : "memory");
|
|
trace_tlbia(pid);
|
|
}
|
|
#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
|
|
|
|
#else /* CONFIG_40x || CONFIG_PPC_8xx */
|
|
extern void _tlbil_all(void);
|
|
extern void _tlbil_pid(unsigned int pid);
|
|
#ifdef CONFIG_PPC_BOOK3E
|
|
extern void _tlbil_pid_noind(unsigned int pid);
|
|
#else
|
|
#define _tlbil_pid_noind(pid) _tlbil_pid(pid)
|
|
#endif
|
|
#endif /* !(CONFIG_40x || CONFIG_PPC_8xx) */
|
|
|
|
/*
|
|
* On 8xx, we directly inline tlbie, on others, it's extern
|
|
*/
|
|
#ifdef CONFIG_PPC_8xx
|
|
static inline void _tlbil_va(unsigned long address, unsigned int pid,
|
|
unsigned int tsize, unsigned int ind)
|
|
{
|
|
asm volatile ("tlbie %0; sync" : : "r" (address) : "memory");
|
|
trace_tlbie(0, 0, address, pid, 0, 0, 0);
|
|
}
|
|
#elif defined(CONFIG_PPC_BOOK3E)
|
|
extern void _tlbil_va(unsigned long address, unsigned int pid,
|
|
unsigned int tsize, unsigned int ind);
|
|
#else
|
|
extern void __tlbil_va(unsigned long address, unsigned int pid);
|
|
static inline void _tlbil_va(unsigned long address, unsigned int pid,
|
|
unsigned int tsize, unsigned int ind)
|
|
{
|
|
__tlbil_va(address, pid);
|
|
}
|
|
#endif /* CONFIG_PPC_8xx */
|
|
|
|
#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_PPC_47x)
|
|
extern void _tlbivax_bcast(unsigned long address, unsigned int pid,
|
|
unsigned int tsize, unsigned int ind);
|
|
#else
|
|
static inline void _tlbivax_bcast(unsigned long address, unsigned int pid,
|
|
unsigned int tsize, unsigned int ind)
|
|
{
|
|
BUG();
|
|
}
|
|
#endif
|
|
|
|
static inline void print_system_hash_info(void) {}
|
|
|
|
#else /* CONFIG_PPC_MMU_NOHASH */
|
|
|
|
extern void _tlbie(unsigned long address);
|
|
extern void _tlbia(void);
|
|
|
|
void print_system_hash_info(void);
|
|
|
|
#endif /* CONFIG_PPC_MMU_NOHASH */
|
|
|
|
#ifdef CONFIG_PPC32
|
|
|
|
void hash_preload(struct mm_struct *mm, unsigned long ea);
|
|
|
|
extern void mapin_ram(void);
|
|
extern void setbat(int index, unsigned long virt, phys_addr_t phys,
|
|
unsigned int size, pgprot_t prot);
|
|
|
|
extern int __map_without_bats;
|
|
extern unsigned int rtas_data, rtas_size;
|
|
|
|
struct hash_pte;
|
|
extern struct hash_pte *Hash;
|
|
extern u8 early_hash[];
|
|
|
|
#endif /* CONFIG_PPC32 */
|
|
|
|
extern unsigned long __max_low_memory;
|
|
extern phys_addr_t __initial_memory_limit_addr;
|
|
extern phys_addr_t total_memory;
|
|
extern phys_addr_t total_lowmem;
|
|
extern phys_addr_t memstart_addr;
|
|
extern phys_addr_t lowmem_end_addr;
|
|
|
|
#ifdef CONFIG_WII
|
|
extern unsigned long wii_hole_start;
|
|
extern unsigned long wii_hole_size;
|
|
|
|
extern unsigned long wii_mmu_mapin_mem2(unsigned long top);
|
|
extern void wii_memory_fixups(void);
|
|
#endif
|
|
|
|
/* ...and now those things that may be slightly different between processor
|
|
* architectures. -- Dan
|
|
*/
|
|
#ifdef CONFIG_PPC32
|
|
extern void MMU_init_hw(void);
|
|
void MMU_init_hw_patch(void);
|
|
unsigned long mmu_mapin_ram(unsigned long base, unsigned long top);
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_FSL_BOOK3E
|
|
extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx,
|
|
bool dryrun);
|
|
extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
|
|
phys_addr_t phys);
|
|
#ifdef CONFIG_PPC32
|
|
extern void adjust_total_lowmem(void);
|
|
extern int switch_to_as1(void);
|
|
extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu);
|
|
void create_kaslr_tlb_entry(int entry, unsigned long virt, phys_addr_t phys);
|
|
void reloc_kernel_entry(void *fdt, int addr);
|
|
extern int is_second_reloc;
|
|
#endif
|
|
extern void loadcam_entry(unsigned int index);
|
|
extern void loadcam_multi(int first_idx, int num, int tmp_idx);
|
|
|
|
#ifdef CONFIG_RANDOMIZE_BASE
|
|
void kaslr_early_init(void *dt_ptr, phys_addr_t size);
|
|
void kaslr_late_init(void);
|
|
#else
|
|
static inline void kaslr_early_init(void *dt_ptr, phys_addr_t size) {}
|
|
static inline void kaslr_late_init(void) {}
|
|
#endif
|
|
|
|
struct tlbcam {
|
|
u32 MAS0;
|
|
u32 MAS1;
|
|
unsigned long MAS2;
|
|
u32 MAS3;
|
|
u32 MAS7;
|
|
};
|
|
#endif
|
|
|
|
#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_FSL_BOOKE) || defined(CONFIG_PPC_8xx)
|
|
/* 6xx have BATS */
|
|
/* FSL_BOOKE have TLBCAM */
|
|
/* 8xx have LTLB */
|
|
phys_addr_t v_block_mapped(unsigned long va);
|
|
unsigned long p_block_mapped(phys_addr_t pa);
|
|
#else
|
|
static inline phys_addr_t v_block_mapped(unsigned long va) { return 0; }
|
|
static inline unsigned long p_block_mapped(phys_addr_t pa) { return 0; }
|
|
#endif
|
|
|
|
#if defined(CONFIG_PPC_BOOK3S_32) || defined(CONFIG_PPC_8xx)
|
|
void mmu_mark_initmem_nx(void);
|
|
void mmu_mark_rodata_ro(void);
|
|
#else
|
|
static inline void mmu_mark_initmem_nx(void) { }
|
|
static inline void mmu_mark_rodata_ro(void) { }
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_8xx
|
|
void __init mmu_mapin_immr(void);
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC_DEBUG_WX
|
|
void ptdump_check_wx(void);
|
|
#else
|
|
static inline void ptdump_check_wx(void) { }
|
|
#endif
|