Difference between revisions of "SMC"

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The secure monitor provides two top level handlers of which each provides a range of sub handlers.
 
The secure monitor provides two top level handlers of which each provides a range of sub handlers.
 +
 +
Secure Monitor Calls follow the ARM SMC calling convention:
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{| class=wikitable
 +
! Bit number || Bit mask || Description
 +
|-
 +
| 31 || 0x80000000 || Set to 0 means Yielding Call; Set to 1 means Fast Call.
 +
|-
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| 30 || 0x40000000 || Set to 0 means SMC32 convention; Set to 1 means SMC64.
 +
|-
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| 29-24 || 0x3F000000 || Service Call ranges.
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|-
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| 23-16 || 0x00FF0000 || Must be zero.
 +
|-
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| 15-0 || 0x0000FFFF || Function number within the range call type.
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|}
  
 
== Id 0 ==
 
== Id 0 ==
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! Sub-Id || Name || In || Out
 
! Sub-Id || Name || In || Out
 
|-
 
|-
| 0xC4000001 || oyasumi || ||
+
| 0xC4000001 || CPU_SUSPEND (oyasumi) || ||
 
|-
 
|-
| 0x84000002 || || ||
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| 0x84000002 || CPU_OFF || ||
 
|-
 
|-
| 0xC4000003 || || ||
+
| 0xC4000003 || CPU_ON || ||
 
|-
 
|-
 
| 0xC3000004 || (Same as Id 0 Sub-Id 2.) || ||
 
| 0xC3000004 || (Same as Id 0 Sub-Id 2.) || ||

Revision as of 12:57, 10 July 2017

Secure Monitor Calls

The secure monitor provides two top level handlers of which each provides a range of sub handlers.

Secure Monitor Calls follow the ARM SMC calling convention:

Bit number Bit mask Description
31 0x80000000 Set to 0 means Yielding Call; Set to 1 means Fast Call.
30 0x40000000 Set to 0 means SMC32 convention; Set to 1 means SMC64.
29-24 0x3F000000 Service Call ranges.
23-16 0x00FF0000 Must be zero.
15-0 0x0000FFFF Function number within the range call type.

Id 0

Cryptography related functions.

Sub-Id Name In Out
0xC3000401
0xC3000002 (Same as Id 1 Sub-Id 4.)
0xC3000003
0xC3000404
0xC3000E05
0xC3000006
0xC3000007
0xC3000008
0xC3000009
0xC300000A
0xC300040B
0xC300100C
0xC300100D
0xC300100E
0xC300060F
0xC3000610
0xC3000011
0xC3000012

Id 1

General and power related functions.

Sub-Id Name In Out
0xC4000001 CPU_SUSPEND (oyasumi)
0x84000002 CPU_OFF
0xC4000003 CPU_ON
0xC3000004 (Same as Id 0 Sub-Id 2.)
0xC3000005
0xC3000006
0xC3000007
0xC3000008