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target/microblaze: Move pvr regs to MicroBlazeCPUConfig

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These values are constant, and are derived from the other
configuration knobs.  Move them into MicroBlazeCPUConfig
to emphasize that they are not variable.

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-09-04 11:11:28 -07:00
parent a0b2d16a09
commit a4bcfc3380
7 changed files with 54 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
hw/microblaze/petalogix_ml605_mmu.c
View File

@ -200,9 +200,9 @@ petalogix_ml605_init(MachineState *machine)
}
/* setup PVR to match kernel settings */
cpu->env.pvr.regs[4] = 0xc56b8000;
cpu->env.pvr.regs[5] = 0xc56be000;
cpu->env.pvr.regs[10] = 0x0e000000; /* virtex 6 */
cpu->cfg.pvr_regs[4] = 0xc56b8000;
cpu->cfg.pvr_regs[5] = 0xc56be000;
cpu->cfg.pvr_regs[10] = 0x0e000000; /* virtex 6 */
microblaze_load_kernel(cpu, MEMORY_BASEADDR, ram_size,
machine->initrd_filename,

92
target/microblaze/cpu.c
View File

@ -153,7 +153,6 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
CPUState *cs = CPU(dev);
MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(dev);
MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
CPUMBState *env = &cpu->env;
uint8_t version_code = 0;
const char *version;
int i = 0;
@ -173,16 +172,6 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
qemu_init_vcpu(cs);
env->pvr.regs[0] = PVR0_USE_EXC_MASK
| PVR0_USE_ICACHE_MASK
| PVR0_USE_DCACHE_MASK;
env->pvr.regs[2] = PVR2_D_OPB_MASK
| PVR2_D_LMB_MASK
| PVR2_I_OPB_MASK
| PVR2_I_LMB_MASK
| PVR2_FPU_EXC_MASK
| 0;
version = cpu->cfg.version ? cpu->cfg.version : DEFAULT_CPU_VERSION;
for (i = 0; mb_cpu_lookup[i].name && version; i++) {
if (strcmp(mb_cpu_lookup[i].name, version) == 0) {
@ -195,46 +184,53 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
qemu_log("Invalid MicroBlaze version number: %s\n", cpu->cfg.version);
}
env->pvr.regs[0] |= (cpu->cfg.stackprot ? PVR0_SPROT_MASK : 0) |
(cpu->cfg.use_fpu ? PVR0_USE_FPU_MASK : 0) |
(cpu->cfg.use_hw_mul ? PVR0_USE_HW_MUL_MASK : 0) |
(cpu->cfg.use_barrel ? PVR0_USE_BARREL_MASK : 0) |
(cpu->cfg.use_div ? PVR0_USE_DIV_MASK : 0) |
(cpu->cfg.use_mmu ? PVR0_USE_MMU_MASK : 0) |
(cpu->cfg.endi ? PVR0_ENDI_MASK : 0) |
(version_code << PVR0_VERSION_SHIFT) |
(cpu->cfg.pvr == C_PVR_FULL ? PVR0_PVR_FULL_MASK : 0) |
cpu->cfg.pvr_user1;
cpu->cfg.pvr_regs[0] =
(PVR0_USE_EXC_MASK |
PVR0_USE_ICACHE_MASK |
PVR0_USE_DCACHE_MASK |
(cpu->cfg.stackprot ? PVR0_SPROT_MASK : 0) |
(cpu->cfg.use_fpu ? PVR0_USE_FPU_MASK : 0) |
(cpu->cfg.use_hw_mul ? PVR0_USE_HW_MUL_MASK : 0) |
(cpu->cfg.use_barrel ? PVR0_USE_BARREL_MASK : 0) |
(cpu->cfg.use_div ? PVR0_USE_DIV_MASK : 0) |
(cpu->cfg.use_mmu ? PVR0_USE_MMU_MASK : 0) |
(cpu->cfg.endi ? PVR0_ENDI_MASK : 0) |
(version_code << PVR0_VERSION_SHIFT) |
(cpu->cfg.pvr == C_PVR_FULL ? PVR0_PVR_FULL_MASK : 0) |
cpu->cfg.pvr_user1);
env->pvr.regs[1] = cpu->cfg.pvr_user2;
env->pvr.regs[2] |= (cpu->cfg.use_fpu ? PVR2_USE_FPU_MASK : 0) |
(cpu->cfg.use_fpu > 1 ? PVR2_USE_FPU2_MASK : 0) |
(cpu->cfg.use_hw_mul ? PVR2_USE_HW_MUL_MASK : 0) |
(cpu->cfg.use_hw_mul > 1 ? PVR2_USE_MUL64_MASK : 0) |
(cpu->cfg.use_barrel ? PVR2_USE_BARREL_MASK : 0) |
(cpu->cfg.use_div ? PVR2_USE_DIV_MASK : 0) |
(cpu->cfg.use_msr_instr ? PVR2_USE_MSR_INSTR : 0) |
(cpu->cfg.use_pcmp_instr ? PVR2_USE_PCMP_INSTR : 0) |
(cpu->cfg.dopb_bus_exception ?
PVR2_DOPB_BUS_EXC_MASK : 0) |
(cpu->cfg.iopb_bus_exception ?
PVR2_IOPB_BUS_EXC_MASK : 0) |
(cpu->cfg.div_zero_exception ?
PVR2_DIV_ZERO_EXC_MASK : 0) |
(cpu->cfg.illegal_opcode_exception ?
PVR2_ILL_OPCODE_EXC_MASK : 0) |
(cpu->cfg.unaligned_exceptions ?
PVR2_UNALIGNED_EXC_MASK : 0) |
(cpu->cfg.opcode_0_illegal ?
PVR2_OPCODE_0x0_ILL_MASK : 0);
cpu->cfg.pvr_regs[1] = cpu->cfg.pvr_user2;
env->pvr.regs[5] |= cpu->cfg.dcache_writeback ?
PVR5_DCACHE_WRITEBACK_MASK : 0;
cpu->cfg.pvr_regs[2] =
(PVR2_D_OPB_MASK |
PVR2_D_LMB_MASK |
PVR2_I_OPB_MASK |
PVR2_I_LMB_MASK |
PVR2_FPU_EXC_MASK |
(cpu->cfg.use_fpu ? PVR2_USE_FPU_MASK : 0) |
(cpu->cfg.use_fpu > 1 ? PVR2_USE_FPU2_MASK : 0) |
(cpu->cfg.use_hw_mul ? PVR2_USE_HW_MUL_MASK : 0) |
(cpu->cfg.use_hw_mul > 1 ? PVR2_USE_MUL64_MASK : 0) |
(cpu->cfg.use_barrel ? PVR2_USE_BARREL_MASK : 0) |
(cpu->cfg.use_div ? PVR2_USE_DIV_MASK : 0) |
(cpu->cfg.use_msr_instr ? PVR2_USE_MSR_INSTR : 0) |
(cpu->cfg.use_pcmp_instr ? PVR2_USE_PCMP_INSTR : 0) |
(cpu->cfg.dopb_bus_exception ? PVR2_DOPB_BUS_EXC_MASK : 0) |
(cpu->cfg.iopb_bus_exception ? PVR2_IOPB_BUS_EXC_MASK : 0) |
(cpu->cfg.div_zero_exception ? PVR2_DIV_ZERO_EXC_MASK : 0) |
(cpu->cfg.illegal_opcode_exception ? PVR2_ILL_OPCODE_EXC_MASK : 0) |
(cpu->cfg.unaligned_exceptions ? PVR2_UNALIGNED_EXC_MASK : 0) |
(cpu->cfg.opcode_0_illegal ? PVR2_OPCODE_0x0_ILL_MASK : 0));
env->pvr.regs[10] = 0x0c000000 | /* Default to spartan 3a dsp family. */
(cpu->cfg.addr_size - 32) << PVR10_ASIZE_SHIFT;
env->pvr.regs[11] = (cpu->cfg.use_mmu ? PVR11_USE_MMU : 0) |
16 << 17;
cpu->cfg.pvr_regs[5] |=
cpu->cfg.dcache_writeback ? PVR5_DCACHE_WRITEBACK_MASK : 0;
cpu->cfg.pvr_regs[10] =
(0x0c000000 | /* Default to spartan 3a dsp family. */
(cpu->cfg.addr_size - 32) << PVR10_ASIZE_SHIFT);
cpu->cfg.pvr_regs[11] = ((cpu->cfg.use_mmu ? PVR11_USE_MMU : 0) |
16 << 17);
mcc->parent_realize(dev, errp);
}

5
target/microblaze/cpu.h
View File

@ -285,10 +285,6 @@ struct CPUMBState {
struct {} end_reset_fields;
/* These fields are preserved on reset. */
struct {
uint32_t regs[13];
} pvr;
};
/*
@ -301,6 +297,7 @@ typedef struct {
uint32_t base_vectors;
uint32_t pvr_user2;
uint32_t pvr_regs[13];
uint8_t addr_size;
uint8_t use_fpu;

4
target/microblaze/gdbstub.c
View File

@ -78,7 +78,7 @@ int mb_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n)
break;
case GDB_PVR0 ... GDB_PVR11:
/* PVR12 is intentionally skipped */
val = env->pvr.regs[n - GDB_PVR0];
val = cpu->cfg.pvr_regs[n - GDB_PVR0];
break;
case GDB_EDR:
val = env->edr;
@ -134,7 +134,7 @@ int mb_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
break;
case GDB_PVR0 ... GDB_PVR11:
/* PVR12 is intentionally skipped */
env->pvr.regs[n - GDB_PVR0] = tmp;
cpu->cfg.pvr_regs[n - GDB_PVR0] = tmp;
break;
case GDB_EDR:
env->edr = tmp;

2
target/microblaze/helper.c
View File

@ -122,7 +122,7 @@ void mb_cpu_do_interrupt(CPUState *cs)
switch (cs->exception_index) {
case EXCP_HW_EXCP:
if (!(env->pvr.regs[0] & PVR0_USE_EXC_MASK)) {
if (!(cpu->cfg.pvr_regs[0] & PVR0_USE_EXC_MASK)) {
qemu_log_mask(LOG_GUEST_ERROR,
"Exception raised on system without exceptions!\n");
return;

2
target/microblaze/op_helper.c
View File

@ -134,7 +134,7 @@ static void update_fpu_flags(CPUMBState *env, int flags, uintptr_t ra)
raise = 1;
}
if (raise
&& (env->pvr.regs[2] & PVR2_FPU_EXC_MASK)
&& (env_archcpu(env)->cfg.pvr_regs[2] & PVR2_FPU_EXC_MASK)
&& (env->msr & MSR_EE)) {
raise_fpu_exception(env, ra);
}

3
target/microblaze/translate.c
View File

@ -1539,7 +1539,8 @@ static bool trans_mfs(DisasContext *dc, arg_mfs *arg)
case 0x2000 ... 0x200c:
tcg_gen_ld_i32(dest, cpu_env,
offsetof(CPUMBState, pvr.regs[arg->rs - 0x2000]));
offsetof(MicroBlazeCPU, cfg.pvr_regs[arg->rs - 0x2000])
- offsetof(MicroBlazeCPU, env));
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "Invalid mfs reg 0x%x\n", arg->rs);