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lib: Extend sbi_hart_switch_mode() to support hypervisor extension

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This patch extends sbi_hart_switch_mode() to support entering
VS/VU modes when hypervisor extension is available.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Anup Patel
2019-04-05 14:08:57 +05:30
committed by Anup Patel
parent 0089897d41
commit 1a5614e971
4 changed files with 44 additions and 5 deletions
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14
include/sbi/riscv_encoding.h
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@@ -38,8 +38,21 @@
#define MSTATUS_TW 0x00200000
#define MSTATUS_TSR 0x00400000
#define MSTATUS32_SD 0x80000000
#if __riscv_xlen == 64
#define MSTATUS_UXL 0x0000000300000000
#define MSTATUS_SXL 0x0000000C00000000
#define MSTATUS_MTL 0x0000004000000000
#define MSTATUS_MTL_SHIFT 38
#define MSTATUS_MPV 0x0000008000000000
#define MSTATUS_MPV_HIFT 39
#else
#define MSTATUSH_UXL 0x00000003
#define MSTATUSH_SXL 0x0000000C
#define MSTATUSH_MTL 0x00000040
#define MSTATUSH_MTL_SHIFT 6
#define MSTATUSH_MPV 0x00000080
#define MSTATUSH_MPV_HIFT 7
#endif
#define MSTATUS64_SD 0x8000000000000000
#define SSTATUS_UIE 0x00000001
@@ -256,6 +269,7 @@
#define CSR_MIE 0x304
#define CSR_MTVEC 0x305
#define CSR_MCOUNTEREN 0x306
#define CSR_MSTATUSH 0x310
#define CSR_MSCRATCH 0x340
#define CSR_MEPC 0x341
#define CSR_MCAUSE 0x342