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target-microblaze: Convert dcache-writeback to a CPU property

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Originally  the dcache-writeback PVR bits were manually set for each machine.
This is a hassle and difficult to read, instead set them based on the CPU
properties.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
This commit is contained in:
Alistair Francis 2015-06-18 21:16:32 -07:00 • committed by Edgar E. Iglesias
parent 7144612370
commit a6c3ed2474
3 changed files with 8 additions and 1 deletions
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1
target-microblaze/cpu-qom.h
View file

@ -65,6 +65,7 @@ typedef struct MicroBlazeCPU {
uint32_t base_vectors;
uint8_t use_fpu;
bool use_mmu;
bool dcache_writeback;
} cfg;
CPUMBState env;

5
target-microblaze/cpu.c
View file

@ -119,6 +119,9 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp)
env->pvr.regs[2] |= (cpu->cfg.use_fpu ? PVR2_USE_FPU_MASK : 0) |
(cpu->cfg.use_fpu > 1 ? PVR2_USE_FPU2_MASK : 0);
env->pvr.regs[5] |= cpu->cfg.dcache_writeback ?
PVR5_DCACHE_WRITEBACK_MASK : 0;
env->pvr.regs[10] = 0x0c000000; /* Default to spartan 3a dsp family. */
env->pvr.regs[11] = PVR11_USE_MMU | (16 << 17);
@ -169,6 +172,8 @@ static Property mb_properties[] = {
*/
DEFINE_PROP_UINT8("use-fpu", MicroBlazeCPU, cfg.use_fpu, 2),
DEFINE_PROP_BOOL("use-mmu", MicroBlazeCPU, cfg.use_mmu, true),
DEFINE_PROP_BOOL("dcache-writeback", MicroBlazeCPU, cfg.dcache_writeback,
false),
DEFINE_PROP_END_OF_LIST(),
};