xen/interface/arch-arm.h

1 /* SPDX-License-Identifier: MIT */
3  * arch-arm.h
21  * 32- or 64-bit), the second argument in x1/r1, the third in x2/r2,
26  * is an inter-procedure-call scratch register (e.g. for use in linker
40  * EABI) and Procedure Call Standard for the ARM 64-bit Architecture
41  * (AAPCS64). Where there is a conflict the 64-bit standard should be
47  * which is mapped as Normal Inner Write-Back Outer Write-Back Inner-Shareable.
49  *  - hypercall arguments passed via a pointer to guest memory.
50  *  - memory shared via the grant table mechanism (including PV I/O
52  *  - memory shared with the hypervisor (struct shared_info, struct
68  * The following hypercalls (and sub operations) are supported on the
73  *   All generic sub-operations
76  *   All generic sub-operations, with the exception of:
80  *   All generic sub-operations, with the exception of:
81  *    * SCHEDOP_block -- prefer wfi hardware instruction
84  *   All generic sub-operations
87  *   All generic sub-operations
90  *   All generic sub-operations
93  *   Exactly these sub-operations are supported:
98  *   All generic sub-operations, with the exception of:
104  *   Exactly these sub-operations are supported:
109  *   All generic sub-operations
112  *   Exactly these sub-operations are supported:
117  *   All generic sub-operations
121  * - struct start_info is not exported to ARM guests.
123  * - struct shared_info is mapped by ARM guests using the
124  *   HYPERVISOR_memory_op sub-op XENMEM_add_to_physmap, passing
127  * - All the per-cpu struct vcpu_info are mapped by ARM guests using the
128  *   HYPERVISOR_vcpu_op sub-op VCPUOP_register_vcpu_info, including cpu0
131  * - The grant table is mapped using the HYPERVISOR_memory_op sub-op
137  * - Xenstore is initialized by using the two hvm_params
139  *   with the HYPERVISOR_hvm_op sub-op HVMOP_get_param.
141  * - The paravirtualized console is initialized by using the two
143  *   can be read with the HYPERVISOR_hvm_op sub-op HVMOP_get_param.
145  * - Event channel notifications are delivered using the percpu GIC
149  * - The device tree Xen compatible node is fully described under Linux
182         _sxghr_tmp->q = 0;                                  \
183         _sxghr_tmp->p = val;                                \
192  * Maximum number of virtual CPUs in legacy multi-processor guests.
202 /* Anonymous union includes both 32- and 64-bit names (e.g., r0/x0). */
208 /* Non-gcc sources must always use the proper 64-bit name (e.g., x0). */
309      * Based on the property clock-frequency in the DT timer node.
345 #define PSR_IT_MASK     (0x0600fc00)  /* Thumb If-Then Mask */
375  * Note that PSR_Z is also set by U-Boot and QEMU -kernel when loading
432 /* Guest PCI-PCIe memory space where config space and BAR will be available.*/
504  * c-file-style: "BSD"
505  * c-basic-offset: 4
506  * tab-width: 4
507  * indent-tabs-mode: nil