X-Git-Url: https://git.librecmc.org/?p=oweals%2Fu-boot.git;a=blobdiff_plain;f=arch%2Fpowerpc%2Fcpu%2Fmpc85xx%2Ftlb.c;h=4465ae7565a45be93f4f0d55a0fbf00d5e455311;hp=929f6a607e029bac48630e6977246067cd2460cf;hb=c27178ba3649f539c9f1890ea147f4c5415f63b5;hpb=0c2dd9a05bdcf3b2b4880509ec690116873fe158 diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c index 929f6a607e..4465ae7565 100644 --- a/arch/powerpc/cpu/mpc85xx/tlb.c +++ b/arch/powerpc/cpu/mpc85xx/tlb.c @@ -1,35 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2008-2011 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 +#include #include #include #ifdef CONFIG_ADDR_MAP #include #endif +#include + DECLARE_GLOBAL_DATA_PTR; void invalidate_tlb(u8 tlb) @@ -40,7 +26,7 @@ void invalidate_tlb(u8 tlb) mtspr(MMUCSR0, 0x2); } -void init_tlbs(void) +__weak void init_tlbs(void) { int i; @@ -55,7 +41,8 @@ void init_tlbs(void) return ; } -#ifndef CONFIG_NAND_SPL +#if !defined(CONFIG_NAND_SPL) && \ + (!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_SPL_INIT_MINIMAL)) void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn, phys_addr_t *rpn) { @@ -66,7 +53,7 @@ void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn, _mas1 = mfspr(MAS1); *valid = (_mas1 & MAS1_VALID); - *tsize = (_mas1 >> 8) & 0xf; + *tsize = (_mas1 >> 7) & 0x1f; *epn = mfspr(MAS2) & MAS2_EPN; *rpn = mfspr(MAS3) & MAS3_RPN; #ifdef CONFIG_ENABLE_36BIT_PHYS @@ -99,7 +86,7 @@ static inline void use_tlb_cam(u8 idx) int i = idx / 32; int bit = idx % 32; - gd->used_tlb_cams[i] |= (1 << bit); + gd->arch.used_tlb_cams[i] |= (1 << bit); } static inline void free_tlb_cam(u8 idx) @@ -107,7 +94,7 @@ static inline void free_tlb_cam(u8 idx) int i = idx / 32; int bit = idx % 32; - gd->used_tlb_cams[i] &= ~(1 << bit); + gd->arch.used_tlb_cams[i] &= ~(1 << bit); } void init_used_tlb_cams(void) @@ -116,7 +103,7 @@ void init_used_tlb_cams(void) 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; + gd->arch.used_tlb_cams[i] = 0; /* walk all the entries */ for (i = 0; i < num_cam; i++) { @@ -133,7 +120,7 @@ int find_free_tlbcam(void) u32 idx; for (i = 0; i < ((CONFIG_SYS_NUM_TLBCAMS+31)/32); i++) { - idx = ffz(gd->used_tlb_cams[i]); + idx = ffz(gd->arch.used_tlb_cams[i]); if (idx != 32) break; @@ -156,6 +143,13 @@ void set_tlb(u8 tlb, u32 epn, u64 rpn, if (tlb == 1) use_tlb_cam(esel); + if ((mfspr(SPRN_MMUCFG) & MMUCFG_MAVN) == MMUCFG_MAVN_V1 && + tsize & 1) { + printf("%s: bad tsize %d on entry %d at 0x%08x\n", + __func__, tsize, tlb, epn); + return; + } + _mas0 = FSL_BOOKE_MAS0(tlb, esel, 0); _mas1 = FSL_BOOKE_MAS1(1, iprot, 0, ts, tsize); _mas2 = FSL_BOOKE_MAS2(epn, wimge); @@ -244,34 +238,42 @@ void init_addr_map(void) } #endif -unsigned int -setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg) +uint64_t tlb_map_range(ulong v_addr, phys_addr_t p_addr, uint64_t size, + enum tlb_map_type map_type) { int i; unsigned int tlb_size; - unsigned int wimge = 0; - unsigned int ram_tlb_address = (unsigned int)CONFIG_SYS_DDR_SDRAM_BASE; - unsigned int max_cam; - u64 size, memsize = (u64)memsize_in_meg << 20; + unsigned int wimge; + unsigned int perm; + unsigned int max_cam, tsize_mask; + if (map_type == TLB_MAP_RAM) { + perm = MAS3_SX|MAS3_SW|MAS3_SR; + wimge = MAS2_M; #ifdef CONFIG_SYS_PPC_DDR_WIMGE - wimge = CONFIG_SYS_PPC_DDR_WIMGE; + wimge = CONFIG_SYS_PPC_DDR_WIMGE; #endif - size = min(memsize, CONFIG_MAX_MEM_MAPPED); + } else { + perm = MAS3_SW|MAS3_SR; + wimge = MAS2_I|MAS2_G; + } + if ((mfspr(SPRN_MMUCFG) & MMUCFG_MAVN) == MMUCFG_MAVN_V1) { /* Convert (4^max) kB to (2^max) bytes */ max_cam = ((mfspr(SPRN_TLB1CFG) >> 16) & 0xf) * 2 + 10; + tsize_mask = ~1U; } else { /* Convert (2^max) kB to (2^max) bytes */ max_cam = __ilog2(mfspr(SPRN_TLB1PS)) + 10; + tsize_mask = ~0U; } 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; + int tlb_index = find_free_tlbcam(); + u32 camsize = __ilog2_u64(size) & tsize_mask; + u32 align = __ilog2(v_addr) & tsize_mask; - if (ram_tlb_index == -1) + if (tlb_index == -1) break; if (align == -2) align = max_cam; @@ -281,20 +283,35 @@ setup_ddr_tlbs_phys(phys_addr_t p_addr, unsigned int memsize_in_meg) if (camsize > max_cam) camsize = max_cam; - tlb_size = (camsize - 10) / 2; + tlb_size = camsize - 10; - set_tlb(1, ram_tlb_address, p_addr, - MAS3_SX|MAS3_SW|MAS3_SR, wimge, - 0, ram_tlb_index, tlb_size, 1); + set_tlb(1, v_addr, p_addr, perm, wimge, + 0, tlb_index, tlb_size, 1); size -= 1ULL << camsize; - memsize -= 1ULL << camsize; - ram_tlb_address += 1UL << camsize; + v_addr += 1UL << camsize; p_addr += 1UL << camsize; } - if (memsize) - print_size(memsize, " left unmapped\n"); + return size; +} + +unsigned int setup_ddr_tlbs_phys(phys_addr_t p_addr, + unsigned int memsize_in_meg) +{ + unsigned int ram_tlb_address = (unsigned int)CONFIG_SYS_DDR_SDRAM_BASE; + u64 memsize = (u64)memsize_in_meg << 20; + u64 size; + + size = min(memsize, (u64)CONFIG_MAX_MEM_MAPPED); + size = tlb_map_range(ram_tlb_address, p_addr, size, TLB_MAP_RAM); + + if (size || memsize > CONFIG_MAX_MEM_MAPPED) { + print_size(memsize > CONFIG_MAX_MEM_MAPPED ? + memsize - CONFIG_MAX_MEM_MAPPED + size : size, + " left unmapped\n"); + } + return memsize_in_meg; } @@ -332,4 +349,4 @@ void clear_ddr_tlbs(unsigned int memsize_in_meg) } -#endif /* !CONFIG_NAND_SPL */ +#endif /* not SPL */