On 2/14/25 2:13 AM, Steven Price wrote:
The RMM (Realm Management Monitor) provides functionality that can be
accessed by SMC calls from the host.
The SMC definitions are based on DEN0137[1] version 1.0-rel0
[1] https://developer.arm.com/documentation/den0137/1-0rel0/
Signed-off-by: Steven Price <steven.price@xxxxxxx>
---
Changes since v6:
* Renamed REC_ENTER_xxx defines to include 'FLAG' to make it obvious
these are flag values.
Changes since v5:
* Sorted the SMC #defines by value.
* Renamed SMI_RxI_CALL to SMI_RMI_CALL since the macro is only used for
RMI calls.
* Renamed REC_GIC_NUM_LRS to REC_MAX_GIC_NUM_LRS since the actual
number of available list registers could be lower.
* Provided a define for the reserved fields of FeatureRegister0.
* Fix inconsistent names for padding fields.
Changes since v4:
* Update to point to final released RMM spec.
* Minor rearrangements.
Changes since v3:
* Update to match RMM spec v1.0-rel0-rc1.
Changes since v2:
* Fix specification link.
* Rename rec_entry->rec_enter to match spec.
* Fix size of pmu_ovf_status to match spec.
---
arch/arm64/include/asm/rmi_smc.h | 259 +++++++++++++++++++++++++++++++
1 file changed, 259 insertions(+)
create mode 100644 arch/arm64/include/asm/rmi_smc.h
One nitpick below, with it addressed:
Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>
diff --git a/arch/arm64/include/asm/rmi_smc.h b/arch/arm64/include/asm/rmi_smc.h
new file mode 100644
index 000000000000..f85a82072337
--- /dev/null
+++ b/arch/arm64/include/asm/rmi_smc.h
@@ -0,0 +1,259 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2023-2024 ARM Ltd.
+ *
+ * The values and structures in this file are from the Realm Management Monitor
+ * specification (DEN0137) version 1.0-rel0:
+ * https://developer.arm.com/documentation/den0137/1-0rel0/
+ */
+
+#ifndef __ASM_RME_SMC_H
+#define __ASM_RME_SMC_H
+
#ifndef __ASM_RMI_SMC_H
#define __ASM_RMI_SMC_H
[...]
+
+struct rec_run {
+ struct rec_enter enter;
+ struct rec_exit exit;
+};
+
+#endif
#endif /* __ASM_RMI_SMC_H */
