Hi Supreeth, On Fri, Sep 22, 2017 at 08:25:39PM +0100, Supreeth Venkatesh wrote: > This patch adds a list of function IDs that fall under the standard > SMC range as defined in > http://infocenter.arm.com/help/topic/com.arm.doc.den0060a/DEN0060A_ARM_MM_Interface_Specification.pdf. > > SMCs associated with Management Mode are in the range 0xC4000040 - > 0xC400005f (64 bit) and 0x84000040 - 0x8400005f (32 bit). > > The function(s) available to the normal world: > 1. Request services from the secure MM environment using MM_COMMUNICATE. > > SVCs are in the range 0xC4000060 - 0xC400007f. > The functions available to the secure MM partition: > 1. Signal completion of MM event handling. > 2. Set/Get memory attributes for a memory region at runtime. > 3. Get version number of secure partition manager. > > Also, it defines memory attributes and MM return codes.
The SVCs in the 0xC4000060 - 0xC400007f range are not a part of the MM interface specification. At the moment, these are used to implement an interface between ARM TF in EL3 and S-EL0. These should go into a separate patch that introduces them as an ARM TF ABI. cheers, Achin > > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Achin Gupta <[email protected]> > Signed-off-by: Supreeth Venkatesh <[email protected]> > --- > ArmPkg/Include/IndustryStandard/ArmStdSmc.h | 46 > ++++++++++++++++++++++++++++- > 1 file changed, 45 insertions(+), 1 deletion(-) > > diff --git a/ArmPkg/Include/IndustryStandard/ArmStdSmc.h > b/ArmPkg/Include/IndustryStandard/ArmStdSmc.h > index 593a3ce729..a625bc2048 100644 > --- a/ArmPkg/Include/IndustryStandard/ArmStdSmc.h > +++ b/ArmPkg/Include/IndustryStandard/ArmStdSmc.h > @@ -1,6 +1,6 @@ > /** @file > * > -* Copyright (c) 2012-2014, ARM Limited. All rights reserved. > +* Copyright (c) 2012-2017, ARM Limited. All rights reserved. > * > * This program and the accompanying materials > * are licensed and made available under the terms and conditions of the BSD > License > @@ -40,6 +40,50 @@ > #define ARM_SMC_STD_REVISION_MAJOR 0x0 > #define ARM_SMC_STD_REVISION_MINOR 0x1 > > + > +/* > + * Management Mode (MM) calls cover a subset of the Standard Service Call > range. > + * The list below is not exhaustive. > + */ > +#define ARM_SMC_ID_MM_VERSION_AARCH32 0x84000040 > +#define ARM_SMC_ID_MM_VERSION_AARCH64 0xC4000040 > + > +// Request service from secure standalone MM environment > +#define ARM_SMC_ID_MM_COMMUNICATE_AARCH32 0x84000041 > +#define ARM_SMC_ID_MM_COMMUNICATE_AARCH64 0xC4000041 > + > +/* > + * SVC IDs to allow the MM secure partition to initialise itself, handle > + * delegated events and request the Secure partition manager to perform > + * privileged operations on its behalf. > + */ > +#define ARM_SVC_ID_SPM_VERSION_AARCH64 0xC4000060 > +#define ARM_SVC_ID_SP_EVENT_COMPLETE_AARCH64 0xC4000061 > +#define ARM_SVC_ID_SP_GET_MEM_ATTRIBUTES_AARCH64 0xC4000064 > +#define ARM_SVC_ID_SP_SET_MEM_ATTRIBUTES_AARCH64 0xC4000065 > + > +#define SET_MEM_ATTR_DATA_PERM_MASK 0x3 > +#define SET_MEM_ATTR_DATA_PERM_SHIFT 0 > +#define SET_MEM_ATTR_DATA_PERM_NO_ACCESS 0 > +#define SET_MEM_ATTR_DATA_PERM_RW 1 > +#define SET_MEM_ATTR_DATA_PERM_RO 3 > + > +#define SET_MEM_ATTR_CODE_PERM_MASK 0x1 > +#define SET_MEM_ATTR_CODE_PERM_SHIFT 2 > +#define SET_MEM_ATTR_CODE_PERM_X 0 > +#define SET_MEM_ATTR_CODE_PERM_XN 1 > + > +#define SET_MEM_ATTR_MAKE_PERM_REQUEST(d_perm, c_perm) > \ > + ((((c_perm) & SET_MEM_ATTR_CODE_PERM_MASK) << > SET_MEM_ATTR_CODE_PERM_SHIFT) | \ > + (( (d_perm) & SET_MEM_ATTR_DATA_PERM_MASK) << > SET_MEM_ATTR_DATA_PERM_SHIFT)) > + > +/* MM return error codes */ > +#define ARM_SMC_MM_RET_SUCCESS 0 > +#define ARM_SMC_MM_RET_NOT_SUPPORTED -1 > +#define ARM_SMC_MM_RET_INVALID_PARAMS -2 > +#define ARM_SMC_MM_RET_DENIED -3 > +#define ARM_SMC_MM_RET_NO_MEMORY -4 > + > /* > * Power State Coordination Interface (PSCI) calls cover a subset of the > * Standard Service Call range. > -- > 2.14.1 > _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
