diff options
| author |   Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com> | 2023-10-10 11:40:56 +0000 |
|---|---|---|
| committer | Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com> | 2023-10-10 11:40:56 +0000 |
| commit | e02cda008591317b1625707ff8e115a4841aa889 (patch) | |
| tree | aee302e3cf8b59ec2d32ec481be3d1afddfc8968 /target/microblaze/cpu-param.h | |
| parent | cc668e6b7e0ffd8c9d130513d12053cf5eda1d3b (diff) | |
Introduce Virtio-loopback epsilon release:
Epsilon release introduces a new compatibility layer which make virtio-loopback
design to work with QEMU and rust-vmm vhost-user backend without require any
changes.
Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9
Diffstat (limited to 'target/microblaze/cpu-param.h')
| -rw-r--r-- | target/microblaze/cpu-param.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/microblaze/cpu-param.h b/target/microblaze/cpu-param.h new file mode 100644 index 000000000..4d8297fa9 --- /dev/null +++ b/target/microblaze/cpu-param.h @@ -0,0 +1,33 @@ +/* + * MicroBlaze cpu parameters for qemu. + * + * Copyright (c) 2009 Edgar E. Iglesias + * SPDX-License-Identifier: LGPL-2.0+ + */ + +#ifndef MICROBLAZE_CPU_PARAM_H +#define MICROBLAZE_CPU_PARAM_H 1 + +/* + * While system mode can address up to 64 bits of address space, + * this is done via the lea/sea instructions, which are system-only + * (as they also bypass the mmu). + * + * We can improve the user-only experience by only exposing 32 bits + * of address space. + */ +#ifdef CONFIG_USER_ONLY +#define TARGET_LONG_BITS 32 +#define TARGET_PHYS_ADDR_SPACE_BITS 32 +#define TARGET_VIRT_ADDR_SPACE_BITS 32 +#else +#define TARGET_LONG_BITS 64 +#define TARGET_PHYS_ADDR_SPACE_BITS 64 +#define TARGET_VIRT_ADDR_SPACE_BITS 64 +#endif + +/* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */ +#define TARGET_PAGE_BITS 12 +#define NB_MMU_MODES 3 + +#endif |