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target/microblaze: Add props enabling exceptions on failed bus accesses 

Add MicroBlaze CPU properties to enable exceptions on failed
bus accesses.

Reviewed-by: Luc Michel <luc.michel@greensocs.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Edgar E. Iglesias 2019-01-04 15:05:10 +01:00
parent 619ddf5b1a
commit 2867a96ffb
2 changed files with 13 additions and 1 deletions
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12
target/microblaze/cpu.c
View File

@ -202,7 +202,11 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
(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.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);
env->pvr.regs[5] |= cpu->cfg.dcache_writeback ?
PVR5_DCACHE_WRITEBACK_MASK : 0;
@ -265,6 +269,12 @@ static Property mb_properties[] = {
DEFINE_PROP_BOOL("dcache-writeback", MicroBlazeCPU, cfg.dcache_writeback,
false),
DEFINE_PROP_BOOL("endianness", MicroBlazeCPU, cfg.endi, false),
/* Enables bus exceptions on failed data accesses (load/stores). */
DEFINE_PROP_BOOL("dopb-bus-exception", MicroBlazeCPU,
cfg.dopb_bus_exception, false),
/* Enables bus exceptions on failed instruction fetches. */
DEFINE_PROP_BOOL("iopb-bus-exception", MicroBlazeCPU,
cfg.iopb_bus_exception, false),
DEFINE_PROP_STRING("version", MicroBlazeCPU, cfg.version),
DEFINE_PROP_UINT8("pvr", MicroBlazeCPU, cfg.pvr, C_PVR_FULL),
DEFINE_PROP_END_OF_LIST(),

2
target/microblaze/cpu.h
View File

@ -308,6 +308,8 @@ struct MicroBlazeCPU {
bool use_mmu;
bool dcache_writeback;
bool endi;
bool dopb_bus_exception;
bool iopb_bus_exception;
char *version;
uint8_t pvr;
} cfg;