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lib: sbi: Implement SBI MPXY extension

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Implement the SBI MPXY extension which provides an SBI interface to
the supervisor software for send messages via MPXY framework.

Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Co-developed-by: Anup Patel <apatel@ventanamicro.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
This commit is contained in:
Anup Patel
2024-08-08 11:04:55 +05:30
committed by Anup Patel
parent 7939bf1329
commit e67d91cdcc
4 changed files with 84 additions and 0 deletions
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10
include/sbi/sbi_ecall_interface.h
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@@ -37,6 +37,7 @@
#define SBI_EXT_DBTR 0x44425452
#define SBI_EXT_SSE 0x535345
#define SBI_EXT_FWFT 0x46574654
#define SBI_EXT_MPXY 0x4D505859
/* SBI function IDs for BASE extension*/
#define SBI_EXT_BASE_GET_SPEC_VERSION 0x0
@@ -421,6 +422,15 @@ enum sbi_sse_state {
#define SBI_SSE_EVENT_GLOBAL_BIT (1 << 15)
#define SBI_SSE_EVENT_PLATFORM_BIT (1 << 14)
/* SBI function IDs for MPXY extension */
#define SBI_EXT_MPXY_SET_SHMEM 0x0
#define SBI_EXT_MPXY_GET_CHANNEL_IDS 0x1
#define SBI_EXT_MPXY_READ_ATTRS 0x2
#define SBI_EXT_MPXY_WRITE_ATTRS 0x3
#define SBI_EXT_MPXY_SEND_MSG_WITH_RESP 0x4
#define SBI_EXT_MPXY_SEND_MSG_NO_RESP 0x5
#define SBI_EXT_MPXY_GET_NOTIFICATION_EVENTS 0x6
/* SBI base specification related macros */
#define SBI_SPEC_VERSION_MAJOR_OFFSET 24
#define SBI_SPEC_VERSION_MAJOR_MASK 0x7f