summaryrefslogtreecommitdiff
path: root/cpu/mpc85xx/tlb.c
diff options
context:
space:
mode:
Diffstat (limited to 'cpu/mpc85xx/tlb.c')
-rw-r--r--cpu/mpc85xx/tlb.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/cpu/mpc85xx/tlb.c b/cpu/mpc85xx/tlb.c
deleted file mode 100644
index b3037ac..0000000
--- a/cpu/mpc85xx/tlb.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * Copyright 2008-2009 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>
-#ifdef CONFIG_ADDR_MAP
-#include <addr_map.h>
-#endif
-
-DECLARE_GLOBAL_DATA_PTR;
-
-void invalidate_tlb(u8 tlb)
-{
- if (tlb == 0)
- mtspr(MMUCSR0, 0x4);
- if (tlb == 1)
- mtspr(MMUCSR0, 0x2);
-}
-
-void init_tlbs(void)
-{
- int i;
-
- for (i = 0; i < num_tlb_entries; i++) {
- write_tlb(tlb_table[i].mas0,
- tlb_table[i].mas1,
- tlb_table[i].mas2,
- tlb_table[i].mas3,
- tlb_table[i].mas7);
- }
-
- return ;
-}
-
-#ifndef CONFIG_NAND_SPL
-static inline void use_tlb_cam(u8 idx)
-{
- int i = idx / 32;
- int bit = idx % 32;
-
- gd->used_tlb_cams[i] |= (1 << bit);
-}
-
-static inline void free_tlb_cam(u8 idx)
-{
- int i = idx / 32;
- int bit = idx % 32;
-
- gd->used_tlb_cams[i] &= ~(1 << bit);
-}
-
-void init_used_tlb_cams(void)
-{
- int i;
- unsigned int num_cam = mfspr(SPRN_TLB1CFG) & 0xfff;
-
- for (i = 0; i < ((CONFIG_SYS_NUM_TLBCAMS+31)/32); i++)
- gd->used_tlb_cams[i] = 0;
-
- /* walk all the entries */
- for (i = 0; i < num_cam; i++) {
- u32 _mas1;
-
- mtspr(MAS0, FSL_BOOKE_MAS0(1, i, 0));
-
- asm volatile("tlbre;isync");
- _mas1 = mfspr(MAS1);
-
- /* if the entry isn't valid skip it */
- if ((_mas1 & MAS1_VALID))
- use_tlb_cam(i);
- }
-}
-
-int find_free_tlbcam(void)
-{
- int i;
- u32 idx;
-
- for (i = 0; i < ((CONFIG_SYS_NUM_TLBCAMS+31)/32); i++) {
- idx = ffz(gd->used_tlb_cams[i]);
-
- if (idx != 32)
- break;
- }
-
- idx += i * 32;
-
- if (idx >= CONFIG_SYS_NUM_TLBCAMS)
- return -1;
-
- return idx;
-}
-
-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;
-
- if (tlb == 1)
- use_tlb_cam(esel);
-
- _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 = FSL_BOOKE_MAS7(rpn);
-
- write_tlb(_mas0, _mas1, _mas2, _mas3, _mas7);
-
-#ifdef CONFIG_ADDR_MAP
- if ((tlb == 1) && (gd->flags & GD_FLG_RELOC))
- addrmap_set_entry(epn, rpn, (1UL << ((tsize * 2) + 10)), esel);
-#endif
-}
-
-void disable_tlb(u8 esel)
-{
- u32 _mas0, _mas1, _mas2, _mas3, _mas7;
-
- free_tlb_cam(esel);
-
- _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");
-
-#ifdef CONFIG_ADDR_MAP
- if (gd->flags & GD_FLG_RELOC)
- addrmap_set_entry(0, 0, 0, esel);
-#endif
-}
-
-static void tlbsx (const volatile unsigned *addr)
-{
- __asm__ __volatile__ ("tlbsx 0,%0" : : "r" (addr), "m" (*addr));
-}
-
-/* return -1 if we didn't find anything */
-int find_tlb_idx(void *addr, u8 tlbsel)
-{
- u32 _mas0, _mas1;
-
- /* zero out Search PID, AS */
- mtspr(MAS6, 0);
-
- tlbsx(addr);
-
- _mas0 = mfspr(MAS0);
- _mas1 = mfspr(MAS1);
-
- /* we found something, and its in the TLB we expect */
- if ((MAS1_VALID & _mas1) &&
- (MAS0_TLBSEL(tlbsel) == (_mas0 & MAS0_TLBSEL_MSK))) {
- return ((_mas0 & MAS0_ESEL_MSK) >> 16);
- }
-
- return -1;
-}
-
-#ifdef CONFIG_ADDR_MAP
-void init_addr_map(void)
-{
- int i;
- unsigned int num_cam = mfspr(SPRN_TLB1CFG) & 0xfff;
-
- /* walk all the entries */
- for (i = 0; i < num_cam; i++) {
- unsigned long epn;
- u32 tsize, _mas1;
- phys_addr_t rpn;
-
- mtspr(MAS0, FSL_BOOKE_MAS0(1, i, 0));
-
- asm volatile("tlbre;isync");
- _mas1 = mfspr(MAS1);
-
- /* if the entry isn't valid skip it */
- if (!(_mas1 & MAS1_VALID))
- continue;
-
- tsize = (_mas1 >> 8) & 0xf;
- epn = mfspr(MAS2) & MAS2_EPN;
- rpn = mfspr(MAS3) & MAS3_RPN;
-#ifdef CONFIG_ENABLE_36BIT_PHYS
- rpn |= ((phys_addr_t)mfspr(MAS7)) << 32;
-#endif
-
- addrmap_set_entry(epn, rpn, (1UL << ((tsize * 2) + 10)), i);
- }
-
- return ;
-}
-#endif
-
-unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg)
-{
- int i;
- unsigned int tlb_size;
- unsigned int ram_tlb_address = (unsigned int)CONFIG_SYS_DDR_SDRAM_BASE;
- unsigned int max_cam = (mfspr(SPRN_TLB1CFG) >> 16) & 0xf;
- u64 size, memsize = (u64)memsize_in_meg << 20;
-
- size = min(memsize, CONFIG_MAX_MEM_MAPPED);
-
- /* Convert (4^max) kB to (2^max) bytes */
- max_cam = max_cam * 2 + 10;
-
- for (i = 0; size && i < 8; i++) {
- int ram_tlb_index = find_free_tlbcam();
- u32 camsize = __ilog2_u64(size) & ~1U;
- u32 align = __ilog2(ram_tlb_address) & ~1U;
-
- if (ram_tlb_index == -1)
- break;
-
- if (align == -2) align = max_cam;
- if (camsize > align)
- camsize = align;
-
- if (camsize > max_cam)
- camsize = max_cam;
-
- tlb_size = (camsize - 10) / 2;
-
- set_tlb(1, ram_tlb_address, ram_tlb_address,
- MAS3_SX|MAS3_SW|MAS3_SR, 0,
- 0, ram_tlb_index, tlb_size, 1);
-
- size -= 1ULL << camsize;
- memsize -= 1ULL << camsize;
- ram_tlb_address += 1UL << camsize;
- }
-
- if (memsize)
- print_size(memsize, " left unmapped\n");
-
- /*
- * Confirm that the requested amount of memory was mapped.
- */
- return memsize_in_meg;
-}
-#endif /* !CONFIG_NAND_SPL */
generated by cgit v1.1 at 2024-11-10 11:24:41 +0000