Commit 44a23cfd authored by Kumar Gala's avatar Kumar Gala
Browse files

85xx: Introduce new tlb API



Add a set of functions to manipulate TLB entries:
 * set_tlb() - write a tlb entry
 * invalidate_tlb() - invalidate a tlb array
 * disable_tlb() - disable a variable size tlb entry
 * init_tlbs() - setup initial tlbs based on static table
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent c8c41d4a
......@@ -30,7 +30,7 @@ LIB = $(obj)lib$(CPU).a
START = start.o resetvec.o
COBJS-$(CONFIG_OF_LIBFDT) += fdt.o
COBJS = traps.o cpu.o cpu_init.o speed.o interrupts.o \
COBJS = traps.o cpu.o cpu_init.o speed.o interrupts.o tlb.o \
pci.o serial_scc.o commproc.o ether_fcc.o spd_sdram.o qe_io.o \
$(COBJS-y)
......
......@@ -1071,19 +1071,9 @@ setup_laws_and_tlbs(unsigned int memsize)
ram_tlb_address = (unsigned int)CFG_DDR_SDRAM_BASE;
while (ram_tlb_address < (memsize * 1024 * 1024)
&& ram_tlb_index < 16) {
mtspr(MAS0, FSL_BOOKE_MAS0(1, ram_tlb_index, 0));
mtspr(MAS1, FSL_BOOKE_MAS1(1, 1, 0, 0, tlb_size));
mtspr(MAS2, FSL_BOOKE_MAS2(ram_tlb_address, 0));
mtspr(MAS3, FSL_BOOKE_MAS3(ram_tlb_address, 0,
(MAS3_SX|MAS3_SW|MAS3_SR)));
asm volatile("isync;msync;tlbwe;isync");
debug("DDR: MAS0=0x%08x\n", FSL_BOOKE_MAS0(1, ram_tlb_index, 0));
debug("DDR: MAS1=0x%08x\n", FSL_BOOKE_MAS1(1, 1, 0, 0, tlb_size));
debug("DDR: MAS2=0x%08x\n", FSL_BOOKE_MAS2(ram_tlb_address, 0));
debug("DDR: MAS3=0x%08x\n",
FSL_BOOKE_MAS3(ram_tlb_address, 0,
(MAS3_SX|MAS3_SW|MAS3_SR)));
set_tlb(1, ram_tlb_address, ram_tlb_address,
MAS3_SX|MAS3_SW|MAS3_SR, 0,
0, ram_tlb_index, tlb_size, 1);
ram_tlb_address += (0x1000 << ((tlb_size - 1) * 2));
ram_tlb_index++;
......
/*
* Copyright 2008 Freescale Semiconductor, Inc.
*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/processor.h>
#include <asm/mmu.h>
void set_tlb(u8 tlb, u32 epn, u64 rpn,
u8 perms, u8 wimge,
u8 ts, u8 esel, u8 tsize, u8 iprot)
{
u32 _mas0, _mas1, _mas2, _mas3, _mas7;
_mas0 = FSL_BOOKE_MAS0(tlb, esel, 0);
_mas1 = FSL_BOOKE_MAS1(1, iprot, 0, ts, tsize);
_mas2 = FSL_BOOKE_MAS2(epn, wimge);
_mas3 = FSL_BOOKE_MAS3(rpn, 0, perms);
_mas7 = rpn >> 32;
mtspr(MAS0, _mas0);
mtspr(MAS1, _mas1);
mtspr(MAS2, _mas2);
mtspr(MAS3, _mas3);
#ifdef CONFIG_ENABLE_36BIT_PHYS
mtspr(MAS7, _mas7);
#endif
asm volatile("isync;msync;tlbwe;isync");
}
void disable_tlb(u8 esel)
{
u32 _mas0, _mas1, _mas2, _mas3, _mas7;
_mas0 = FSL_BOOKE_MAS0(1, esel, 0);
_mas1 = 0;
_mas2 = 0;
_mas3 = 0;
_mas7 = 0;
mtspr(MAS0, _mas0);
mtspr(MAS1, _mas1);
mtspr(MAS2, _mas2);
mtspr(MAS3, _mas3);
#ifdef CONFIG_ENABLE_36BIT_PHYS
mtspr(MAS7, _mas7);
#endif
asm volatile("isync;msync;tlbwe;isync");
}
void invalidate_tlb(u8 tlb)
{
if (tlb == 0)
mtspr(MMUCSR0, 0x4);
if (tlb == 1)
mtspr(MMUCSR0, 0x2);
}
void init_tlbs(void)
{
#ifdef CONFIG_FSL_INIT_TLBS
int i;
for (i = 0; i < num_tlb_entries; i++) {
set_tlb(tlb_table[i].tlb, tlb_table[i].epn, tlb_table[i].rpn,
tlb_table[i].perms, tlb_table[i].wimge,
tlb_table[i].ts, tlb_table[i].esel, tlb_table[i].tsize,
tlb_table[i].iprot);
}
#endif
return ;
}
......@@ -418,6 +418,37 @@ extern int write_bat(ppc_bat_t bat, unsigned long upper, unsigned long lower);
#define BOOKE_PAGESZ_256GB 14
#define BOOKE_PAGESZ_1TB 15
#ifdef CONFIG_E500
#ifndef __ASSEMBLY__
extern void set_tlb(u8 tlb, u32 epn, u64 rpn,
u8 perms, u8 wimge,
u8 ts, u8 esel, u8 tsize, u8 iprot);
extern void disable_tlb(u8 esel);
extern void invalidate_tlb(u8 tlb);
extern void init_tlbs(void);
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define SET_TLB_ENTRY(_tlb, _epn, _rpn, _perms, _wimge, _ts, _esel, _sz, _iprot) \
{ .tlb = _tlb, .epn = _epn, .rpn = _rpn, .perms = _perms, \
.wimge = _wimge, .ts = _ts, .esel = _esel, .tsize = _sz, .iprot = _iprot }
struct fsl_e_tlb_entry {
u8 tlb;
u32 epn;
u64 rpn;
u8 perms;
u8 wimge;
u8 ts;
u8 esel;
u8 tsize;
u8 iprot;
};
extern struct fsl_e_tlb_entry tlb_table[];
extern int num_tlb_entries;
#endif
#endif
#if defined(CONFIG_MPC86xx)
#define LAWBAR_BASE_ADDR 0x00FFFFFF
#define LAWAR_TRGT_IF 0x01F00000
......
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