Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
tree: df8e4784a2
Fetching contributors…

Cannot retrieve contributors at this time

595 lines (570 sloc) 22.841 kB
/*
* MIPS emulation for qemu: CPU initialisation routines.
*
* Copyright (c) 2004-2005 Jocelyn Mayer
* Copyright (c) 2007 Herve Poussineau
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/* CPU / CPU family specific config register values. */
/* Have config1, uncached coherency */
#define MIPS_CONFIG0 \
((1 << CP0C0_M) | (0x2 << CP0C0_K0))
/* Have config2, no coprocessor2 attached, no MDMX support attached,
no performance counters, watch registers present,
no code compression, EJTAG present, no FPU */
#define MIPS_CONFIG1 \
((1 << CP0C1_M) | \
(0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) | \
(1 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP) | \
(0 << CP0C1_FP))
/* Have config3, no tertiary/secondary caches implemented */
#define MIPS_CONFIG2 \
((1 << CP0C2_M))
/* No config4, no DSP ASE, no large physaddr (PABITS),
no external interrupt controller, no vectored interupts,
no 1kb pages, no SmartMIPS ASE, no trace logic */
#define MIPS_CONFIG3 \
((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) | \
(0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \
(0 << CP0C3_SM) | (0 << CP0C3_TL))
/* MMU types, the first four entries have the same layout as the
CP0C0_MT field. */
enum mips_mmu_types {
MMU_TYPE_NONE,
MMU_TYPE_R4000,
MMU_TYPE_RESERVED,
MMU_TYPE_FMT,
MMU_TYPE_R3000,
MMU_TYPE_R6000,
MMU_TYPE_R8000
};
struct mips_def_t {
const char *name;
int32_t CP0_PRid;
int32_t CP0_Config0;
int32_t CP0_Config1;
int32_t CP0_Config2;
int32_t CP0_Config3;
int32_t CP0_Config6;
int32_t CP0_Config7;
target_ulong CP0_LLAddr_rw_bitmask;
int CP0_LLAddr_shift;
int32_t SYNCI_Step;
int32_t CCRes;
int32_t CP0_Status_rw_bitmask;
int32_t CP0_TCStatus_rw_bitmask;
int32_t CP0_SRSCtl;
int32_t CP1_fcr0;
int32_t SEGBITS;
int32_t PABITS;
int32_t CP0_SRSConf0_rw_bitmask;
int32_t CP0_SRSConf0;
int32_t CP0_SRSConf1_rw_bitmask;
int32_t CP0_SRSConf1;
int32_t CP0_SRSConf2_rw_bitmask;
int32_t CP0_SRSConf2;
int32_t CP0_SRSConf3_rw_bitmask;
int32_t CP0_SRSConf3;
int32_t CP0_SRSConf4_rw_bitmask;
int32_t CP0_SRSConf4;
int insn_flags;
enum mips_mmu_types mmu_type;
};
/*****************************************************************************/
/* MIPS CPU definitions */
static const mips_def_t mips_defs[] =
{
{
.name = "4Kc",
.CP0_PRid = 0x00018000,
.CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(0 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x1278FF17,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "4Km",
.CP0_PRid = 0x00018300,
/* Config1 implemented, fixed mapping MMU,
no virtual icache, uncached coherency. */
.CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_FMT << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x1258FF17,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32 | ASE_MIPS16,
.mmu_type = MMU_TYPE_FMT,
},
{
.name = "4KEcR1",
.CP0_PRid = 0x00018400,
.CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(0 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x1278FF17,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "4KEmR1",
.CP0_PRid = 0x00018500,
.CP0_Config0 = MIPS_CONFIG0 | (MMU_TYPE_FMT << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x1258FF17,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32 | ASE_MIPS16,
.mmu_type = MMU_TYPE_FMT,
},
{
.name = "4KEc",
.CP0_PRid = 0x00019000,
.CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(0 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3 | (0 << CP0C3_VInt),
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x1278FF17,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R2,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "4KEm",
.CP0_PRid = 0x00019100,
.CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) |
(MMU_TYPE_FMT << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x1258FF17,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R2 | ASE_MIPS16,
.mmu_type = MMU_TYPE_FMT,
},
{
.name = "24Kc",
.CP0_PRid = 0x00019300,
.CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3 | (0 << CP0C3_VInt),
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
/* No DSP implemented. */
.CP0_Status_rw_bitmask = 0x1278FF1F,
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R2 | ASE_MIPS16,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "24Kf",
.CP0_PRid = 0x00019300,
.CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3 | (0 << CP0C3_VInt),
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
/* No DSP implemented. */
.CP0_Status_rw_bitmask = 0x3678FF1F,
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) |
(1 << FCR0_D) | (1 << FCR0_S) | (0x93 << FCR0_PRID),
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R2 | ASE_MIPS16,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "34Kf",
.CP0_PRid = 0x00019500,
.CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) |
(0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
(0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_CA),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3 | (0 << CP0C3_VInt) | (1 << CP0C3_MT),
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 0,
.SYNCI_Step = 32,
.CCRes = 2,
/* No DSP implemented. */
.CP0_Status_rw_bitmask = 0x3678FF1F,
/* No DSP implemented. */
.CP0_TCStatus_rw_bitmask = (0 << CP0TCSt_TCU3) | (0 << CP0TCSt_TCU2) |
(1 << CP0TCSt_TCU1) | (1 << CP0TCSt_TCU0) |
(0 << CP0TCSt_TMX) | (1 << CP0TCSt_DT) |
(1 << CP0TCSt_DA) | (1 << CP0TCSt_A) |
(0x3 << CP0TCSt_TKSU) | (1 << CP0TCSt_IXMT) |
(0xff << CP0TCSt_TASID),
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) |
(1 << FCR0_D) | (1 << FCR0_S) | (0x95 << FCR0_PRID),
.CP0_SRSCtl = (0xf << CP0SRSCtl_HSS),
.CP0_SRSConf0_rw_bitmask = 0x3fffffff,
.CP0_SRSConf0 = (1 << CP0SRSC0_M) | (0x3fe << CP0SRSC0_SRS3) |
(0x3fe << CP0SRSC0_SRS2) | (0x3fe << CP0SRSC0_SRS1),
.CP0_SRSConf1_rw_bitmask = 0x3fffffff,
.CP0_SRSConf1 = (1 << CP0SRSC1_M) | (0x3fe << CP0SRSC1_SRS6) |
(0x3fe << CP0SRSC1_SRS5) | (0x3fe << CP0SRSC1_SRS4),
.CP0_SRSConf2_rw_bitmask = 0x3fffffff,
.CP0_SRSConf2 = (1 << CP0SRSC2_M) | (0x3fe << CP0SRSC2_SRS9) |
(0x3fe << CP0SRSC2_SRS8) | (0x3fe << CP0SRSC2_SRS7),
.CP0_SRSConf3_rw_bitmask = 0x3fffffff,
.CP0_SRSConf3 = (1 << CP0SRSC3_M) | (0x3fe << CP0SRSC3_SRS12) |
(0x3fe << CP0SRSC3_SRS11) | (0x3fe << CP0SRSC3_SRS10),
.CP0_SRSConf4_rw_bitmask = 0x3fffffff,
.CP0_SRSConf4 = (0x3fe << CP0SRSC4_SRS15) |
(0x3fe << CP0SRSC4_SRS14) | (0x3fe << CP0SRSC4_SRS13),
.SEGBITS = 32,
.PABITS = 32,
.insn_flags = CPU_MIPS32R2 | ASE_MIPS16 | ASE_DSP | ASE_MT,
.mmu_type = MMU_TYPE_R4000,
},
#if defined(TARGET_MIPS64)
{
.name = "R4000",
.CP0_PRid = 0x00000400,
/* No L2 cache, icache size 8k, dcache size 8k, uncached coherency. */
.CP0_Config0 = (1 << 17) | (0x1 << 9) | (0x1 << 6) | (0x2 << CP0C0_K0),
/* Note: Config1 is only used internally, the R4000 has only Config0. */
.CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU),
.CP0_LLAddr_rw_bitmask = 0xFFFFFFFF,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 16,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x3678FFFF,
/* The R4000 has a full 64bit FPU but doesn't use the fcr0 bits. */
.CP1_fcr0 = (0x5 << FCR0_PRID) | (0x0 << FCR0_REV),
.SEGBITS = 40,
.PABITS = 36,
.insn_flags = CPU_MIPS3,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "VR5432",
.CP0_PRid = 0x00005400,
/* No L2 cache, icache size 8k, dcache size 8k, uncached coherency. */
.CP0_Config0 = (1 << 17) | (0x1 << 9) | (0x1 << 6) | (0x2 << CP0C0_K0),
.CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU),
.CP0_LLAddr_rw_bitmask = 0xFFFFFFFFL,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 16,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x3678FFFF,
/* The VR5432 has a full 64bit FPU but doesn't use the fcr0 bits. */
.CP1_fcr0 = (0x54 << FCR0_PRID) | (0x0 << FCR0_REV),
.SEGBITS = 40,
.PABITS = 32,
.insn_flags = CPU_VR54XX,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "5Kc",
.CP0_PRid = 0x00018100,
.CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (31 << CP0C1_MMU) |
(1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) |
(1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x32F8FFFF,
.SEGBITS = 42,
.PABITS = 36,
.insn_flags = CPU_MIPS64,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "5Kf",
.CP0_PRid = 0x00018100,
.CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (31 << CP0C1_MMU) |
(1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) |
(1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) |
(1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 4,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x36F8FFFF,
/* The 5Kf has F64 / L / W but doesn't use the fcr0 bits. */
.CP1_fcr0 = (1 << FCR0_D) | (1 << FCR0_S) |
(0x81 << FCR0_PRID) | (0x0 << FCR0_REV),
.SEGBITS = 42,
.PABITS = 36,
.insn_flags = CPU_MIPS64,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "20Kc",
/* We emulate a later version of the 20Kc, earlier ones had a broken
WAIT instruction. */
.CP0_PRid = 0x000182a0,
.CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT) |
(MMU_TYPE_R4000 << CP0C0_MT) | (1 << CP0C0_VI),
.CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (47 << CP0C1_MMU) |
(2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) |
(2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) |
(1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3,
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 0,
.SYNCI_Step = 32,
.CCRes = 1,
.CP0_Status_rw_bitmask = 0x36FBFFFF,
/* The 20Kc has F64 / L / W but doesn't use the fcr0 bits. */
.CP1_fcr0 = (1 << FCR0_3D) | (1 << FCR0_PS) |
(1 << FCR0_D) | (1 << FCR0_S) |
(0x82 << FCR0_PRID) | (0x0 << FCR0_REV),
.SEGBITS = 40,
.PABITS = 36,
.insn_flags = CPU_MIPS64 | ASE_MIPS3D,
.mmu_type = MMU_TYPE_R4000,
},
{
/* A generic CPU providing MIPS64 Release 2 features.
FIXME: Eventually this should be replaced by a real CPU model. */
.name = "MIPS64R2-generic",
.CP0_PRid = 0x00010000,
.CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR) | (0x2 << CP0C0_AT) |
(MMU_TYPE_R4000 << CP0C0_MT),
.CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (63 << CP0C1_MMU) |
(2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) |
(2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) |
(1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
.CP0_Config2 = MIPS_CONFIG2,
.CP0_Config3 = MIPS_CONFIG3 | (1 << CP0C3_LPA),
.CP0_LLAddr_rw_bitmask = 0,
.CP0_LLAddr_shift = 0,
.SYNCI_Step = 32,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x36FBFFFF,
.CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_3D) | (1 << FCR0_PS) |
(1 << FCR0_L) | (1 << FCR0_W) | (1 << FCR0_D) |
(1 << FCR0_S) | (0x00 << FCR0_PRID) | (0x0 << FCR0_REV),
.SEGBITS = 42,
/* The architectural limit is 59, but we have hardcoded 36 bit
in some places...
.PABITS = 59, */ /* the architectural limit */
.PABITS = 36,
.insn_flags = CPU_MIPS64R2 | ASE_MIPS3D,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "Loongson-2E",
.CP0_PRid = 0x6302,
/*64KB I-cache and d-cache. 4 way with 32 bit cache line size*/
.CP0_Config0 = (0x1<<17) | (0x1<<16) | (0x1<<11) | (0x1<<8) | (0x1<<5) |
(0x1<<4) | (0x1<<1),
/* Note: Config1 is only used internally, Loongson-2E has only Config0. */
.CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU),
.SYNCI_Step = 16,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0x35D0FFFF,
.CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV),
.SEGBITS = 40,
.PABITS = 40,
.insn_flags = CPU_LOONGSON2E,
.mmu_type = MMU_TYPE_R4000,
},
{
.name = "Loongson-2F",
.CP0_PRid = 0x6303,
/*64KB I-cache and d-cache. 4 way with 32 bit cache line size*/
.CP0_Config0 = (0x1<<17) | (0x1<<16) | (0x1<<11) | (0x1<<8) | (0x1<<5) |
(0x1<<4) | (0x1<<1),
/* Note: Config1 is only used internally, Loongson-2F has only Config0. */
.CP0_Config1 = (1 << CP0C1_FP) | (47 << CP0C1_MMU),
.SYNCI_Step = 16,
.CCRes = 2,
.CP0_Status_rw_bitmask = 0xF5D0FF1F, /*bit5:7 not writeable*/
.CP1_fcr0 = (0x5 << FCR0_PRID) | (0x1 << FCR0_REV),
.SEGBITS = 40,
.PABITS = 40,
.insn_flags = CPU_LOONGSON2F,
.mmu_type = MMU_TYPE_R4000,
},
#endif
};
static const mips_def_t *cpu_mips_find_by_name (const char *name)
{
int i;
for (i = 0; i < ARRAY_SIZE(mips_defs); i++) {
if (strcasecmp(name, mips_defs[i].name) == 0) {
return &mips_defs[i];
}
}
return NULL;
}
void mips_cpu_list (FILE *f, fprintf_function cpu_fprintf)
{
int i;
for (i = 0; i < ARRAY_SIZE(mips_defs); i++) {
(*cpu_fprintf)(f, "MIPS '%s'\n",
mips_defs[i].name);
}
}
#ifndef CONFIG_USER_ONLY
static void no_mmu_init (CPUMIPSState *env, const mips_def_t *def)
{
env->tlb->nb_tlb = 1;
env->tlb->map_address = &no_mmu_map_address;
}
static void fixed_mmu_init (CPUMIPSState *env, const mips_def_t *def)
{
env->tlb->nb_tlb = 1;
env->tlb->map_address = &fixed_mmu_map_address;
}
static void r4k_mmu_init (CPUMIPSState *env, const mips_def_t *def)
{
env->tlb->nb_tlb = 1 + ((def->CP0_Config1 >> CP0C1_MMU) & 63);
env->tlb->map_address = &r4k_map_address;
env->tlb->helper_tlbwi = r4k_helper_tlbwi;
env->tlb->helper_tlbwr = r4k_helper_tlbwr;
env->tlb->helper_tlbp = r4k_helper_tlbp;
env->tlb->helper_tlbr = r4k_helper_tlbr;
}
static void mmu_init (CPUMIPSState *env, const mips_def_t *def)
{
env->tlb = qemu_mallocz(sizeof(CPUMIPSTLBContext));
switch (def->mmu_type) {
case MMU_TYPE_NONE:
no_mmu_init(env, def);
break;
case MMU_TYPE_R4000:
r4k_mmu_init(env, def);
break;
case MMU_TYPE_FMT:
fixed_mmu_init(env, def);
break;
case MMU_TYPE_R3000:
case MMU_TYPE_R6000:
case MMU_TYPE_R8000:
default:
cpu_abort(env, "MMU type not supported\n");
}
}
#endif /* CONFIG_USER_ONLY */
static void fpu_init (CPUMIPSState *env, const mips_def_t *def)
{
int i;
for (i = 0; i < MIPS_FPU_MAX; i++)
env->fpus[i].fcr0 = def->CP1_fcr0;
memcpy(&env->active_fpu, &env->fpus[0], sizeof(env->active_fpu));
}
static void mvp_init (CPUMIPSState *env, const mips_def_t *def)
{
env->mvp = qemu_mallocz(sizeof(CPUMIPSMVPContext));
/* MVPConf1 implemented, TLB sharable, no gating storage support,
programmable cache partitioning implemented, number of allocatable
and sharable TLB entries, MVP has allocatable TCs, 2 VPEs
implemented, 5 TCs implemented. */
env->mvp->CP0_MVPConf0 = (1 << CP0MVPC0_M) | (1 << CP0MVPC0_TLBS) |
(0 << CP0MVPC0_GS) | (1 << CP0MVPC0_PCP) |
// TODO: actually do 2 VPEs.
// (1 << CP0MVPC0_TCA) | (0x1 << CP0MVPC0_PVPE) |
// (0x04 << CP0MVPC0_PTC);
(1 << CP0MVPC0_TCA) | (0x0 << CP0MVPC0_PVPE) |
(0x04 << CP0MVPC0_PTC);
#if !defined(CONFIG_USER_ONLY)
/* Usermode has no TLB support */
env->mvp->CP0_MVPConf0 |= (env->tlb->nb_tlb << CP0MVPC0_PTLBE);
#endif
/* Allocatable CP1 have media extensions, allocatable CP1 have FP support,
no UDI implemented, no CP2 implemented, 1 CP1 implemented. */
env->mvp->CP0_MVPConf1 = (1 << CP0MVPC1_CIM) | (1 << CP0MVPC1_CIF) |
(0x0 << CP0MVPC1_PCX) | (0x0 << CP0MVPC1_PCP2) |
(0x1 << CP0MVPC1_PCP1);
}
Jump to Line
Something went wrong with that request. Please try again.