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9c70db9a43
When we use qemu tcg simulation, the page size of bios is 4KB. When using the level 2 super huge page (page size is 1G) to create the page table, it is found that the content of the corresponding address space is abnormal, resulting in the bios can not start the operating system and graphical interface normally. The lddir and ldpte instruction emulation has a problem with the use of super huge page processing above level 2. The page size is not correctly calculated, resulting in the wrong page size of the table entry found by tlb. Signed-off-by: Xianglai Li <lixianglai@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Song Gao <gaosong@loongson.cn> Message-Id: <20240318070332.1273939-1-lixianglai@loongson.cn>
214 lines
6.7 KiB
C
214 lines
6.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* QEMU LoongArch CSRs
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*
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* Copyright (c) 2021 Loongson Technology Corporation Limited
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*/
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#ifndef LOONGARCH_CPU_CSR_H
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#define LOONGARCH_CPU_CSR_H
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#include "hw/registerfields.h"
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/* Based on kernel definitions: arch/loongarch/include/asm/loongarch.h */
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/* Basic CSRs */
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#define LOONGARCH_CSR_CRMD 0x0 /* Current mode info */
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#define LOONGARCH_CSR_PRMD 0x1 /* Prev-exception mode info */
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FIELD(CSR_PRMD, PPLV, 0, 2)
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FIELD(CSR_PRMD, PIE, 2, 1)
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FIELD(CSR_PRMD, PWE, 3, 1)
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#define LOONGARCH_CSR_EUEN 0x2 /* Extended unit enable */
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FIELD(CSR_EUEN, FPE, 0, 1)
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FIELD(CSR_EUEN, SXE, 1, 1)
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FIELD(CSR_EUEN, ASXE, 2, 1)
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FIELD(CSR_EUEN, BTE, 3, 1)
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#define LOONGARCH_CSR_MISC 0x3 /* Misc config */
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FIELD(CSR_MISC, VA32, 0, 4)
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FIELD(CSR_MISC, DRDTL, 4, 4)
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FIELD(CSR_MISC, RPCNTL, 8, 4)
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FIELD(CSR_MISC, ALCL, 12, 4)
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FIELD(CSR_MISC, DWPL, 16, 3)
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#define LOONGARCH_CSR_ECFG 0x4 /* Exception config */
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FIELD(CSR_ECFG, LIE, 0, 13)
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FIELD(CSR_ECFG, VS, 16, 3)
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#define LOONGARCH_CSR_ESTAT 0x5 /* Exception status */
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FIELD(CSR_ESTAT, IS, 0, 13)
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FIELD(CSR_ESTAT, ECODE, 16, 6)
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FIELD(CSR_ESTAT, ESUBCODE, 22, 9)
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#define LOONGARCH_CSR_ERA 0x6 /* Exception return address */
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#define LOONGARCH_CSR_BADV 0x7 /* Bad virtual address */
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#define LOONGARCH_CSR_BADI 0x8 /* Bad instruction */
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#define LOONGARCH_CSR_EENTRY 0xc /* Exception entry address */
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/* TLB related CSRs */
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#define LOONGARCH_CSR_TLBIDX 0x10 /* TLB Index, EHINV, PageSize, NP */
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FIELD(CSR_TLBIDX, INDEX, 0, 12)
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FIELD(CSR_TLBIDX, PS, 24, 6)
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FIELD(CSR_TLBIDX, NE, 31, 1)
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#define LOONGARCH_CSR_TLBEHI 0x11 /* TLB EntryHi */
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FIELD(CSR_TLBEHI_32, VPPN, 13, 19)
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FIELD(CSR_TLBEHI_64, VPPN, 13, 35)
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#define LOONGARCH_CSR_TLBELO0 0x12 /* TLB EntryLo0 */
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#define LOONGARCH_CSR_TLBELO1 0x13 /* TLB EntryLo1 */
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FIELD(TLBENTRY, V, 0, 1)
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FIELD(TLBENTRY, D, 1, 1)
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FIELD(TLBENTRY, PLV, 2, 2)
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FIELD(TLBENTRY, MAT, 4, 2)
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FIELD(TLBENTRY, G, 6, 1)
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FIELD(TLBENTRY, HUGE, 6, 1)
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FIELD(TLBENTRY, HGLOBAL, 12, 1)
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FIELD(TLBENTRY, LEVEL, 13, 2)
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FIELD(TLBENTRY_32, PPN, 8, 24)
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FIELD(TLBENTRY_64, PPN, 12, 36)
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FIELD(TLBENTRY_64, NR, 61, 1)
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FIELD(TLBENTRY_64, NX, 62, 1)
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FIELD(TLBENTRY_64, RPLV, 63, 1)
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#define LOONGARCH_CSR_ASID 0x18 /* Address space identifier */
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FIELD(CSR_ASID, ASID, 0, 10)
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FIELD(CSR_ASID, ASIDBITS, 16, 8)
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/* Page table base address when badv[47] = 0 */
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#define LOONGARCH_CSR_PGDL 0x19
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/* Page table base address when badv[47] = 1 */
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#define LOONGARCH_CSR_PGDH 0x1a
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#define LOONGARCH_CSR_PGD 0x1b /* Page table base address */
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/* Page walk controller's low addr */
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#define LOONGARCH_CSR_PWCL 0x1c
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FIELD(CSR_PWCL, PTBASE, 0, 5)
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FIELD(CSR_PWCL, PTWIDTH, 5, 5)
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FIELD(CSR_PWCL, DIR1_BASE, 10, 5)
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FIELD(CSR_PWCL, DIR1_WIDTH, 15, 5)
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FIELD(CSR_PWCL, DIR2_BASE, 20, 5)
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FIELD(CSR_PWCL, DIR2_WIDTH, 25, 5)
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FIELD(CSR_PWCL, PTEWIDTH, 30, 2)
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/* Page walk controller's high addr */
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#define LOONGARCH_CSR_PWCH 0x1d
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FIELD(CSR_PWCH, DIR3_BASE, 0, 6)
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FIELD(CSR_PWCH, DIR3_WIDTH, 6, 6)
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FIELD(CSR_PWCH, DIR4_BASE, 12, 6)
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FIELD(CSR_PWCH, DIR4_WIDTH, 18, 6)
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#define LOONGARCH_CSR_STLBPS 0x1e /* Stlb page size */
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FIELD(CSR_STLBPS, PS, 0, 5)
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#define LOONGARCH_CSR_RVACFG 0x1f /* Reduced virtual address config */
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FIELD(CSR_RVACFG, RBITS, 0, 4)
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/* Config CSRs */
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#define LOONGARCH_CSR_CPUID 0x20 /* CPU core id */
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#define LOONGARCH_CSR_PRCFG1 0x21 /* Config1 */
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FIELD(CSR_PRCFG1, SAVE_NUM, 0, 4)
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FIELD(CSR_PRCFG1, TIMER_BITS, 4, 8)
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FIELD(CSR_PRCFG1, VSMAX, 12, 3)
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#define LOONGARCH_CSR_PRCFG2 0x22 /* Config2 */
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#define LOONGARCH_CSR_PRCFG3 0x23 /* Config3 */
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FIELD(CSR_PRCFG3, TLB_TYPE, 0, 4)
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FIELD(CSR_PRCFG3, MTLB_ENTRY, 4, 8)
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FIELD(CSR_PRCFG3, STLB_WAYS, 12, 8)
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FIELD(CSR_PRCFG3, STLB_SETS, 20, 8)
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/*
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* Save registers count can read from PRCFG1.SAVE_NUM
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* The Min count is 1. Max count is 15.
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*/
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#define LOONGARCH_CSR_SAVE(N) (0x30 + N)
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/* Timer CSRs */
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#define LOONGARCH_CSR_TID 0x40 /* Timer ID */
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#define LOONGARCH_CSR_TCFG 0x41 /* Timer config */
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FIELD(CSR_TCFG, EN, 0, 1)
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FIELD(CSR_TCFG, PERIODIC, 1, 1)
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FIELD(CSR_TCFG, INIT_VAL, 2, 46)
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#define LOONGARCH_CSR_TVAL 0x42 /* Timer ticks remain */
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#define LOONGARCH_CSR_CNTC 0x43 /* Timer offset */
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#define LOONGARCH_CSR_TICLR 0x44 /* Timer interrupt clear */
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/* LLBCTL CSRs */
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#define LOONGARCH_CSR_LLBCTL 0x60 /* LLBit control */
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FIELD(CSR_LLBCTL, ROLLB, 0, 1)
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FIELD(CSR_LLBCTL, WCLLB, 1, 1)
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FIELD(CSR_LLBCTL, KLO, 2, 1)
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/* Implement dependent */
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#define LOONGARCH_CSR_IMPCTL1 0x80 /* LoongArch config1 */
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#define LOONGARCH_CSR_IMPCTL2 0x81 /* LoongArch config2*/
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/* TLB Refill CSRs */
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#define LOONGARCH_CSR_TLBRENTRY 0x88 /* TLB refill exception address */
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#define LOONGARCH_CSR_TLBRBADV 0x89 /* TLB refill badvaddr */
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#define LOONGARCH_CSR_TLBRERA 0x8a /* TLB refill ERA */
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#define LOONGARCH_CSR_TLBRSAVE 0x8b /* KScratch for TLB refill */
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FIELD(CSR_TLBRERA, ISTLBR, 0, 1)
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FIELD(CSR_TLBRERA, PC, 2, 62)
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#define LOONGARCH_CSR_TLBRELO0 0x8c /* TLB refill entrylo0 */
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#define LOONGARCH_CSR_TLBRELO1 0x8d /* TLB refill entrylo1 */
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#define LOONGARCH_CSR_TLBREHI 0x8e /* TLB refill entryhi */
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FIELD(CSR_TLBREHI, PS, 0, 6)
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FIELD(CSR_TLBREHI_32, VPPN, 13, 19)
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FIELD(CSR_TLBREHI_64, VPPN, 13, 35)
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#define LOONGARCH_CSR_TLBRPRMD 0x8f /* TLB refill mode info */
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FIELD(CSR_TLBRPRMD, PPLV, 0, 2)
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FIELD(CSR_TLBRPRMD, PIE, 2, 1)
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FIELD(CSR_TLBRPRMD, PWE, 4, 1)
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/* Machine Error CSRs */
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#define LOONGARCH_CSR_MERRCTL 0x90 /* ERRCTL */
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FIELD(CSR_MERRCTL, ISMERR, 0, 1)
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#define LOONGARCH_CSR_MERRINFO1 0x91
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#define LOONGARCH_CSR_MERRINFO2 0x92
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#define LOONGARCH_CSR_MERRENTRY 0x93 /* MError exception base */
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#define LOONGARCH_CSR_MERRERA 0x94 /* MError exception PC */
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#define LOONGARCH_CSR_MERRSAVE 0x95 /* KScratch for error exception */
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#define LOONGARCH_CSR_CTAG 0x98 /* TagLo + TagHi */
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/* Direct map windows CSRs*/
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#define LOONGARCH_CSR_DMW(N) (0x180 + N)
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FIELD(CSR_DMW, PLV0, 0, 1)
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FIELD(CSR_DMW, PLV1, 1, 1)
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FIELD(CSR_DMW, PLV2, 2, 1)
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FIELD(CSR_DMW, PLV3, 3, 1)
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FIELD(CSR_DMW, MAT, 4, 2)
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FIELD(CSR_DMW_32, PSEG, 25, 3)
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FIELD(CSR_DMW_32, VSEG, 29, 3)
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FIELD(CSR_DMW_64, VSEG, 60, 4)
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/* Debug CSRs */
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#define LOONGARCH_CSR_DBG 0x500 /* debug config */
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FIELD(CSR_DBG, DST, 0, 1)
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FIELD(CSR_DBG, DREV, 1, 7)
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FIELD(CSR_DBG, DEI, 8, 1)
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FIELD(CSR_DBG, DCL, 9, 1)
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FIELD(CSR_DBG, DFW, 10, 1)
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FIELD(CSR_DBG, DMW, 11, 1)
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FIELD(CSR_DBG, ECODE, 16, 6)
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#define LOONGARCH_CSR_DERA 0x501 /* Debug era */
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#define LOONGARCH_CSR_DSAVE 0x502 /* Debug save */
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#endif /* LOONGARCH_CPU_CSR_H */
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