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Merge pull request #1314 from antonio-nino-diaz-arm/an/smccc-header

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Rename 'smcc' to 'smccc'
This commit is contained in:
davidcunado-arm 2018-03-21 19:18:29 +00:00 committed by GitHub
commit 6d8db46bec
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GPG Key ID: 4AEE18F83AFDEB23
28 changed files with 617 additions and 558 deletions
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4
bl1/aarch32/bl1_context_mgmt.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -10,7 +10,7 @@
#include <context_mgmt.h> #include <context_mgmt.h>
#include <debug.h> #include <debug.h>
#include <platform.h> #include <platform.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include "../bl1_private.h" #include "../bl1_private.h"
/* /*

6
bl1/aarch32/bl1_entrypoint.S
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -9,8 +9,8 @@
#include <bl_common.h> #include <bl_common.h>
#include <context.h> #include <context.h>
#include <el3_common_macros.S> #include <el3_common_macros.S>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <smcc_macros.S> #include <smccc_macros.S>
.globl bl1_vector_table .globl bl1_vector_table
.globl bl1_entrypoint .globl bl1_entrypoint

8
bl1/aarch32/bl1_exceptions.S
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -9,8 +9,8 @@
#include <bl1.h> #include <bl1.h>
#include <bl_common.h> #include <bl_common.h>
#include <context.h> #include <context.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <smcc_macros.S> #include <smccc_macros.S>
#include <xlat_tables.h> #include <xlat_tables.h>
.globl bl1_aarch32_smc_handler .globl bl1_aarch32_smc_handler
@ -93,7 +93,7 @@ func smc_handler
* Save the GP registers. * Save the GP registers.
* ----------------------------------------------------- * -----------------------------------------------------
*/ */
smcc_save_gp_mode_regs smccc_save_gp_mode_regs
/* /*
* `sp` still points to `smc_ctx_t`. Save it to a register * `sp` still points to `smc_ctx_t`. Save it to a register

4
bl1/aarch64/bl1_exceptions.S
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -218,7 +218,7 @@ unexpected_sync_exception:
smc_handler: smc_handler:
/* ----------------------------------------------------- /* -----------------------------------------------------
* Save the GP registers x0-x29. * Save the GP registers x0-x29.
* TODO: Revisit to store only SMCC specified registers. * TODO: Revisit to store only SMCCC specified registers.
* ----------------------------------------------------- * -----------------------------------------------------
*/ */
bl save_gp_registers bl save_gp_registers

2
bl1/bl1_fwu.c
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@ -15,7 +15,7 @@
#include <errno.h> #include <errno.h>
#include <platform.h> #include <platform.h>
#include <platform_def.h> #include <platform_def.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <string.h> #include <string.h>
#include <utils.h> #include <utils.h>
#include "bl1_private.h" #include "bl1_private.h"

2
bl1/bl1_main.c
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@ -15,7 +15,7 @@
#include <errata_report.h> #include <errata_report.h>
#include <platform.h> #include <platform.h>
#include <platform_def.h> #include <platform_def.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <utils.h> #include <utils.h>
#include <uuid.h> #include <uuid.h>
#include "bl1_private.h" #include "bl1_private.h"

8
bl32/sp_min/aarch32/entrypoint.S
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@ -10,8 +10,8 @@
#include <context.h> #include <context.h>
#include <el3_common_macros.S> #include <el3_common_macros.S>
#include <runtime_svc.h> #include <runtime_svc.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <smcc_macros.S> #include <smccc_macros.S>
#include <xlat_tables_defs.h> #include <xlat_tables_defs.h>
.globl sp_min_vector_table .globl sp_min_vector_table
@ -164,7 +164,7 @@ func sp_min_handle_smc
/* On SMC entry, `sp` points to `smc_ctx_t`. Save `lr`. */ /* On SMC entry, `sp` points to `smc_ctx_t`. Save `lr`. */
str lr, [sp, #SMC_CTX_LR_MON] str lr, [sp, #SMC_CTX_LR_MON]
smcc_save_gp_mode_regs smccc_save_gp_mode_regs
clrex_on_monitor_entry clrex_on_monitor_entry
@ -222,7 +222,7 @@ func sp_min_handle_fiq
/* On SMC entry, `sp` points to `smc_ctx_t`. Save `lr`. */ /* On SMC entry, `sp` points to `smc_ctx_t`. Save `lr`. */
str lr, [sp, #SMC_CTX_LR_MON] str lr, [sp, #SMC_CTX_LR_MON]
smcc_save_gp_mode_regs smccc_save_gp_mode_regs
clrex_on_monitor_entry clrex_on_monitor_entry

6
bl32/sp_min/sp_min_main.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -17,7 +17,7 @@
#include <platform_sp_min.h> #include <platform_sp_min.h>
#include <psci.h> #include <psci.h>
#include <runtime_svc.h> #include <runtime_svc.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <stddef.h> #include <stddef.h>
#include <stdint.h> #include <stdint.h>
#include <string.h> #include <string.h>
@ -32,7 +32,7 @@ static void *sp_min_cpu_ctx_ptr[PLATFORM_CORE_COUNT];
static smc_ctx_t sp_min_smc_context[PLATFORM_CORE_COUNT]; static smc_ctx_t sp_min_smc_context[PLATFORM_CORE_COUNT];
/****************************************************************************** /******************************************************************************
* Define the smcc helper library API's * Define the smccc helper library API's
*****************************************************************************/ *****************************************************************************/
void *smc_get_ctx(unsigned int security_state) void *smc_get_ctx(unsigned int security_state)
{ {

2
docs/psci-lib-integration-guide.rst
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@ -261,7 +261,7 @@ argument) determines the PSCI API to be called. The ``x1`` to ``x4`` (2nd to 5th
arguments), are the values of the registers r1 - r4 (in AArch32) or x1 - x4 arguments), are the values of the registers r1 - r4 (in AArch32) or x1 - x4
(in AArch64) when the SMC is received. These are the arguments to PSCI API as (in AArch64) when the SMC is received. These are the arguments to PSCI API as
described in `PSCI spec`_. The 'flags' (8th argument) is a bit field parameter described in `PSCI spec`_. The 'flags' (8th argument) is a bit field parameter
and is detailed in 'smcc.h' header. It includes whether the call is from the and is detailed in 'smccc.h' header. It includes whether the call is from the
secure or non-secure world. The ``cookie`` (6th argument) and the ``handle`` secure or non-secure world. The ``cookie`` (6th argument) and the ``handle``
(7th argument) are not used and are reserved for future use. (7th argument) are not used and are reserved for future use.

4
docs/rt-svc-writers-guide.rst
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@ -108,7 +108,7 @@ initialization and call handler functions.
is also used for diagnostic purposes is also used for diagnostic purposes
- ``_start`` and ``_end`` values must be based on the ``OEN_*`` values defined in - ``_start`` and ``_end`` values must be based on the ``OEN_*`` values defined in
`smcc.h`_ `smccc.h`_
- ``_type`` must be one of ``SMC_TYPE_FAST`` or ``SMC_TYPE_YIELD`` - ``_type`` must be one of ``SMC_TYPE_FAST`` or ``SMC_TYPE_YIELD``
@ -311,5 +311,5 @@ provide this information....
.. _services: ../services .. _services: ../services
.. _lib/psci: ../lib/psci .. _lib/psci: ../lib/psci
.. _runtime\_svc.h: ../include/common/runtime_svc.h .. _runtime\_svc.h: ../include/common/runtime_svc.h
.. _smcc.h: ../include/lib/smcc.h .. _smccc.h: ../include/lib/smccc.h
.. _std\_svc\_setup.c: ../services/std_svc/std_svc_setup.c .. _std\_svc\_setup.c: ../services/std_svc/std_svc_setup.c

2
include/common/runtime_svc.h
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@ -8,7 +8,7 @@
#define __RUNTIME_SVC_H__ #define __RUNTIME_SVC_H__
#include <bl_common.h> /* to include exception types */ #include <bl_common.h> /* to include exception types */
#include <smcc_helpers.h> /* to include SMCC definitions */ #include <smccc_helpers.h> /* to include SMCCC definitions */
/******************************************************************************* /*******************************************************************************

157
include/lib/aarch32/smcc_helpers.h
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@ -7,159 +7,8 @@
#ifndef __SMCC_HELPERS_H__ #ifndef __SMCC_HELPERS_H__
#define __SMCC_HELPERS_H__ #define __SMCC_HELPERS_H__
#include <smcc.h> #if !ERROR_DEPRECATED
#include <smccc_helpers.h>
#endif
/* These are offsets to registers in smc_ctx_t */
#define SMC_CTX_GPREG_R0 0x0
#define SMC_CTX_GPREG_R1 0x4
#define SMC_CTX_GPREG_R2 0x8
#define SMC_CTX_GPREG_R3 0xC
#define SMC_CTX_GPREG_R4 0x10
#define SMC_CTX_GPREG_R5 0x14
#define SMC_CTX_SP_USR 0x34
#define SMC_CTX_SPSR_MON 0x78
#define SMC_CTX_SP_MON 0x7C
#define SMC_CTX_LR_MON 0x80
#define SMC_CTX_SCR 0x84
#define SMC_CTX_PMCR 0x88
#define SMC_CTX_SIZE 0x90
#ifndef __ASSEMBLY__
#include <cassert.h>
#include <types.h>
/*
* The generic structure to save arguments and callee saved registers during
* an SMC. Also this structure is used to store the result return values after
* the completion of SMC service.
*/
typedef struct smc_ctx {
u_register_t r0;
u_register_t r1;
u_register_t r2;
u_register_t r3;
u_register_t r4;
u_register_t r5;
u_register_t r6;
u_register_t r7;
u_register_t r8;
u_register_t r9;
u_register_t r10;
u_register_t r11;
u_register_t r12;
/* spsr_usr doesn't exist */
u_register_t sp_usr;
u_register_t lr_usr;
u_register_t spsr_irq;
u_register_t sp_irq;
u_register_t lr_irq;
u_register_t spsr_fiq;
u_register_t sp_fiq;
u_register_t lr_fiq;
u_register_t spsr_svc;
u_register_t sp_svc;
u_register_t lr_svc;
u_register_t spsr_abt;
u_register_t sp_abt;
u_register_t lr_abt;
u_register_t spsr_und;
u_register_t sp_und;
u_register_t lr_und;
u_register_t spsr_mon;
/*
* `sp_mon` will point to the C runtime stack in monitor mode. But prior
* to exit from SMC, this will point to the `smc_ctx_t` so that
* on next entry due to SMC, the `smc_ctx_t` can be easily accessed.
*/
u_register_t sp_mon;
u_register_t lr_mon;
u_register_t scr;
u_register_t pmcr;
/*
* The workaround for CVE-2017-5715 requires storing information in
* the bottom 3 bits of the stack pointer. Add a padding field to
* force the size of the struct to be a multiple of 8.
*/
u_register_t pad;
} smc_ctx_t __aligned(8);
/*
* Compile time assertions related to the 'smc_context' structure to
* ensure that the assembler and the compiler view of the offsets of
* the structure members is the same.
*/
CASSERT(SMC_CTX_GPREG_R0 == __builtin_offsetof(smc_ctx_t, r0), \
assert_smc_ctx_greg_r0_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R1 == __builtin_offsetof(smc_ctx_t, r1), \
assert_smc_ctx_greg_r1_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R2 == __builtin_offsetof(smc_ctx_t, r2), \
assert_smc_ctx_greg_r2_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R3 == __builtin_offsetof(smc_ctx_t, r3), \
assert_smc_ctx_greg_r3_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R4 == __builtin_offsetof(smc_ctx_t, r4), \
assert_smc_ctx_greg_r4_offset_mismatch);
CASSERT(SMC_CTX_SP_USR == __builtin_offsetof(smc_ctx_t, sp_usr), \
assert_smc_ctx_sp_usr_offset_mismatch);
CASSERT(SMC_CTX_LR_MON == __builtin_offsetof(smc_ctx_t, lr_mon), \
assert_smc_ctx_lr_mon_offset_mismatch);
CASSERT(SMC_CTX_SPSR_MON == __builtin_offsetof(smc_ctx_t, spsr_mon), \
assert_smc_ctx_spsr_mon_offset_mismatch);
CASSERT((sizeof(smc_ctx_t) & 0x7) == 0, assert_smc_ctx_not_aligned);
CASSERT(SMC_CTX_SIZE == sizeof(smc_ctx_t), assert_smc_ctx_size_mismatch);
/* Convenience macros to return from SMC handler */
#define SMC_RET0(_h) { \
return (uintptr_t)(_h); \
}
#define SMC_RET1(_h, _r0) { \
((smc_ctx_t *)(_h))->r0 = (_r0); \
SMC_RET0(_h); \
}
#define SMC_RET2(_h, _r0, _r1) { \
((smc_ctx_t *)(_h))->r1 = (_r1); \
SMC_RET1(_h, (_r0)); \
}
#define SMC_RET3(_h, _r0, _r1, _r2) { \
((smc_ctx_t *)(_h))->r2 = (_r2); \
SMC_RET2(_h, (_r0), (_r1)); \
}
#define SMC_RET4(_h, _r0, _r1, _r2, _r3) { \
((smc_ctx_t *)(_h))->r3 = (_r3); \
SMC_RET3(_h, (_r0), (_r1), (_r2)); \
}
/* Return a UUID in the SMC return registers */
#define SMC_UUID_RET(_h, _uuid) \
SMC_RET4(handle, ((const uint32_t *) &(_uuid))[0], \
((const uint32_t *) &(_uuid))[1], \
((const uint32_t *) &(_uuid))[2], \
((const uint32_t *) &(_uuid))[3])
/*
* Helper macro to retrieve the SMC parameters from smc_ctx_t.
*/
#define get_smc_params_from_ctx(_hdl, _r1, _r2, _r3, _r4) { \
_r1 = ((smc_ctx_t *)_hdl)->r1; \
_r2 = ((smc_ctx_t *)_hdl)->r2; \
_r3 = ((smc_ctx_t *)_hdl)->r3; \
_r4 = ((smc_ctx_t *)_hdl)->r4; \
}
/* ------------------------------------------------------------------------
* Helper APIs for setting and retrieving appropriate `smc_ctx_t`.
* These functions need to implemented by the BL including this library.
* ------------------------------------------------------------------------
*/
/* Get the pointer to `smc_ctx_t` corresponding to the security state. */
void *smc_get_ctx(unsigned int security_state);
/* Set the next `smc_ctx_t` corresponding to the security state. */
void smc_set_next_ctx(unsigned int security_state);
/* Get the pointer to next `smc_ctx_t` already set by `smc_set_next_ctx()`. */
void *smc_get_next_ctx(void);
#endif /*__ASSEMBLY__*/
#endif /* __SMCC_HELPERS_H__ */ #endif /* __SMCC_HELPERS_H__ */

192
include/lib/aarch32/smcc_macros.S
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@ -1,199 +1,15 @@
/* /*
* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
#ifndef __SMCC_MACROS_S__ #ifndef __SMCC_MACROS_S__
#define __SMCC_MACROS_S__ #define __SMCC_MACROS_S__
#include <arch.h> #if !ERROR_DEPRECATED
#include <smccc_macros.S>
/* #define smcc_save_gp_mode_regs smccc_save_gp_mode_regs
* Macro to save the General purpose registers (r0 - r12), the banked
* spsr, lr, sp registers and the `scr` register to the SMC context on entry
* due a SMC call. The `lr` of the current mode (monitor) is expected to be
* already saved. The `sp` must point to the `smc_ctx_t` to save to.
* Additionally, also save the 'pmcr' register as this is updated whilst
* executing in the secure world.
*/
.macro smcc_save_gp_mode_regs
/* Save r0 - r12 in the SMC context */
stm sp, {r0-r12}
mov r0, sp
add r0, r0, #SMC_CTX_SP_USR
#if ARM_ARCH_MAJOR == 7 && !defined(ARMV7_SUPPORTS_VIRTUALIZATION)
/* Must be in secure state to restore Monitor mode */
ldcopr r4, SCR
bic r2, r4, #SCR_NS_BIT
stcopr r2, SCR
isb
cps #MODE32_sys
stm r0!, {sp, lr}
cps #MODE32_irq
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_fiq
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_svc
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_abt
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_und
mrs r2, spsr
stm r0!, {r2, sp, lr}
/* lr_mon is already saved by caller */
cps #MODE32_mon
mrs r2, spsr
stm r0!, {r2}
stcopr r4, SCR
isb
#else
/* Save the banked registers including the current SPSR and LR */
mrs r4, sp_usr
mrs r5, lr_usr
mrs r6, spsr_irq
mrs r7, sp_irq
mrs r8, lr_irq
mrs r9, spsr_fiq
mrs r10, sp_fiq
mrs r11, lr_fiq
mrs r12, spsr_svc
stm r0!, {r4-r12}
mrs r4, sp_svc
mrs r5, lr_svc
mrs r6, spsr_abt
mrs r7, sp_abt
mrs r8, lr_abt
mrs r9, spsr_und
mrs r10, sp_und
mrs r11, lr_und
mrs r12, spsr
stm r0!, {r4-r12}
/* lr_mon is already saved by caller */
ldcopr r4, SCR
#endif #endif
str r4, [sp, #SMC_CTX_SCR]
ldcopr r4, PMCR
str r4, [sp, #SMC_CTX_PMCR]
.endm
/*
* Macro to restore the `smc_ctx_t`, which includes the General purpose
* registers and banked mode registers, and exit from the monitor mode.
* r0 must point to the `smc_ctx_t` to restore from.
*/
.macro monitor_exit
/*
* Save the current sp and restore the smc context
* pointer to sp which will be used for handling the
* next SMC.
*/
str sp, [r0, #SMC_CTX_SP_MON]
mov sp, r0
/*
* Restore SCR first so that we access the right banked register
* when the other mode registers are restored.
*/
ldr r1, [r0, #SMC_CTX_SCR]
stcopr r1, SCR
isb
/*
* Restore the PMCR register.
*/
ldr r1, [r0, #SMC_CTX_PMCR]
stcopr r1, PMCR
/* Restore the banked registers including the current SPSR */
add r1, r0, #SMC_CTX_SP_USR
#if ARM_ARCH_MAJOR == 7 && !defined(ARMV7_SUPPORTS_VIRTUALIZATION)
/* Must be in secure state to restore Monitor mode */
ldcopr r4, SCR
bic r2, r4, #SCR_NS_BIT
stcopr r2, SCR
isb
cps #MODE32_sys
ldm r1!, {sp, lr}
cps #MODE32_irq
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_fiq
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_svc
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_abt
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_und
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_mon
ldm r1!, {r2}
msr spsr_fsxc, r2
stcopr r4, SCR
isb
#else
ldm r1!, {r4-r12}
msr sp_usr, r4
msr lr_usr, r5
msr spsr_irq, r6
msr sp_irq, r7
msr lr_irq, r8
msr spsr_fiq, r9
msr sp_fiq, r10
msr lr_fiq, r11
msr spsr_svc, r12
ldm r1!, {r4-r12}
msr sp_svc, r4
msr lr_svc, r5
msr spsr_abt, r6
msr sp_abt, r7
msr lr_abt, r8
msr spsr_und, r9
msr sp_und, r10
msr lr_und, r11
/*
* Use the `_fsxc` suffix explicitly to instruct the assembler
* to update all the 32 bits of SPSR. Else, by default, the
* assembler assumes `_fc` suffix which only modifies
* f->[31:24] and c->[7:0] bits of SPSR.
*/
msr spsr_fsxc, r12
#endif
/* Restore the LR */
ldr lr, [r0, #SMC_CTX_LR_MON]
/* Restore the rest of the general purpose registers */
ldm r0, {r0-r12}
eret
.endm
#endif /* __SMCC_MACROS_S__ */ #endif /* __SMCC_MACROS_S__ */

166
include/lib/aarch32/smccc_helpers.h Normal file
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@ -0,0 +1,166 @@
/*
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __SMCCC_HELPERS_H__
#define __SMCCC_HELPERS_H__
#include <smccc.h>
/* These are offsets to registers in smc_ctx_t */
#define SMC_CTX_GPREG_R0 0x0
#define SMC_CTX_GPREG_R1 0x4
#define SMC_CTX_GPREG_R2 0x8
#define SMC_CTX_GPREG_R3 0xC
#define SMC_CTX_GPREG_R4 0x10
#define SMC_CTX_GPREG_R5 0x14
#define SMC_CTX_SP_USR 0x34
#define SMC_CTX_SPSR_MON 0x78
#define SMC_CTX_SP_MON 0x7C
#define SMC_CTX_LR_MON 0x80
#define SMC_CTX_SCR 0x84
#define SMC_CTX_PMCR 0x88
#define SMC_CTX_SIZE 0x90
#ifndef __ASSEMBLY__
#include <cassert.h>
#include <types.h>
/*
* The generic structure to save arguments and callee saved registers during
* an SMC. Also this structure is used to store the result return values after
* the completion of SMC service.
*/
typedef struct smc_ctx {
u_register_t r0;
u_register_t r1;
u_register_t r2;
u_register_t r3;
u_register_t r4;
u_register_t r5;
u_register_t r6;
u_register_t r7;
u_register_t r8;
u_register_t r9;
u_register_t r10;
u_register_t r11;
u_register_t r12;
/* spsr_usr doesn't exist */
u_register_t sp_usr;
u_register_t lr_usr;
u_register_t spsr_irq;
u_register_t sp_irq;
u_register_t lr_irq;
u_register_t spsr_fiq;
u_register_t sp_fiq;
u_register_t lr_fiq;
u_register_t spsr_svc;
u_register_t sp_svc;
u_register_t lr_svc;
u_register_t spsr_abt;
u_register_t sp_abt;
u_register_t lr_abt;
u_register_t spsr_und;
u_register_t sp_und;
u_register_t lr_und;
u_register_t spsr_mon;
/*
* `sp_mon` will point to the C runtime stack in monitor mode. But prior
* to exit from SMC, this will point to the `smc_ctx_t` so that
* on next entry due to SMC, the `smc_ctx_t` can be easily accessed.
*/
u_register_t sp_mon;
u_register_t lr_mon;
u_register_t scr;
u_register_t pmcr;
/*
* The workaround for CVE-2017-5715 requires storing information in
* the bottom 3 bits of the stack pointer. Add a padding field to
* force the size of the struct to be a multiple of 8.
*/
u_register_t pad;
} smc_ctx_t __aligned(8);
/*
* Compile time assertions related to the 'smc_context' structure to
* ensure that the assembler and the compiler view of the offsets of
* the structure members is the same.
*/
CASSERT(SMC_CTX_GPREG_R0 == __builtin_offsetof(smc_ctx_t, r0), \
assert_smc_ctx_greg_r0_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R1 == __builtin_offsetof(smc_ctx_t, r1), \
assert_smc_ctx_greg_r1_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R2 == __builtin_offsetof(smc_ctx_t, r2), \
assert_smc_ctx_greg_r2_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R3 == __builtin_offsetof(smc_ctx_t, r3), \
assert_smc_ctx_greg_r3_offset_mismatch);
CASSERT(SMC_CTX_GPREG_R4 == __builtin_offsetof(smc_ctx_t, r4), \
assert_smc_ctx_greg_r4_offset_mismatch);
CASSERT(SMC_CTX_SP_USR == __builtin_offsetof(smc_ctx_t, sp_usr), \
assert_smc_ctx_sp_usr_offset_mismatch);
CASSERT(SMC_CTX_LR_MON == __builtin_offsetof(smc_ctx_t, lr_mon), \
assert_smc_ctx_lr_mon_offset_mismatch);
CASSERT(SMC_CTX_SPSR_MON == __builtin_offsetof(smc_ctx_t, spsr_mon), \
assert_smc_ctx_spsr_mon_offset_mismatch);
CASSERT((sizeof(smc_ctx_t) & 0x7) == 0, assert_smc_ctx_not_aligned);
CASSERT(SMC_CTX_SIZE == sizeof(smc_ctx_t), assert_smc_ctx_size_mismatch);
/* Convenience macros to return from SMC handler */
#define SMC_RET0(_h) { \
return (uintptr_t)(_h); \
}
#define SMC_RET1(_h, _r0) { \
((smc_ctx_t *)(_h))->r0 = (_r0); \
SMC_RET0(_h); \
}
#define SMC_RET2(_h, _r0, _r1) { \
((smc_ctx_t *)(_h))->r1 = (_r1); \
SMC_RET1(_h, (_r0)); \
}
#define SMC_RET3(_h, _r0, _r1, _r2) { \
((smc_ctx_t *)(_h))->r2 = (_r2); \
SMC_RET2(_h, (_r0), (_r1)); \
}
#define SMC_RET4(_h, _r0, _r1, _r2, _r3) { \
((smc_ctx_t *)(_h))->r3 = (_r3); \
SMC_RET3(_h, (_r0), (_r1), (_r2)); \
}
/* Return a UUID in the SMC return registers */
#define SMC_UUID_RET(_h, _uuid) \
SMC_RET4(handle, ((const uint32_t *) &(_uuid))[0], \
((const uint32_t *) &(_uuid))[1], \
((const uint32_t *) &(_uuid))[2], \
((const uint32_t *) &(_uuid))[3])
/*
* Helper macro to retrieve the SMC parameters from smc_ctx_t.
*/
#define get_smc_params_from_ctx(_hdl, _r1, _r2, _r3, _r4) { \
_r1 = ((smc_ctx_t *)_hdl)->r1; \
_r2 = ((smc_ctx_t *)_hdl)->r2; \
_r3 = ((smc_ctx_t *)_hdl)->r3; \
_r4 = ((smc_ctx_t *)_hdl)->r4; \
}
/* ------------------------------------------------------------------------
* Helper APIs for setting and retrieving appropriate `smc_ctx_t`.
* These functions need to implemented by the BL including this library.
* ------------------------------------------------------------------------
*/
/* Get the pointer to `smc_ctx_t` corresponding to the security state. */
void *smc_get_ctx(unsigned int security_state);
/* Set the next `smc_ctx_t` corresponding to the security state. */
void smc_set_next_ctx(unsigned int security_state);
/* Get the pointer to next `smc_ctx_t` already set by `smc_set_next_ctx()`. */
void *smc_get_next_ctx(void);
#endif /*__ASSEMBLY__*/
#endif /* __SMCCC_HELPERS_H__ */

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/*
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __SMCCC_MACROS_S__
#define __SMCCC_MACROS_S__
#include <arch.h>
/*
* Macro to save the General purpose registers (r0 - r12), the banked
* spsr, lr, sp registers and the `scr` register to the SMC context on entry
* due a SMC call. The `lr` of the current mode (monitor) is expected to be
* already saved. The `sp` must point to the `smc_ctx_t` to save to.
* Additionally, also save the 'pmcr' register as this is updated whilst
* executing in the secure world.
*/
.macro smccc_save_gp_mode_regs
/* Save r0 - r12 in the SMC context */
stm sp, {r0-r12}
mov r0, sp
add r0, r0, #SMC_CTX_SP_USR
#if ARM_ARCH_MAJOR == 7 && !defined(ARMV7_SUPPORTS_VIRTUALIZATION)
/* Must be in secure state to restore Monitor mode */
ldcopr r4, SCR
bic r2, r4, #SCR_NS_BIT
stcopr r2, SCR
isb
cps #MODE32_sys
stm r0!, {sp, lr}
cps #MODE32_irq
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_fiq
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_svc
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_abt
mrs r2, spsr
stm r0!, {r2, sp, lr}
cps #MODE32_und
mrs r2, spsr
stm r0!, {r2, sp, lr}
/* lr_mon is already saved by caller */
cps #MODE32_mon
mrs r2, spsr
stm r0!, {r2}
stcopr r4, SCR
isb
#else
/* Save the banked registers including the current SPSR and LR */
mrs r4, sp_usr
mrs r5, lr_usr
mrs r6, spsr_irq
mrs r7, sp_irq
mrs r8, lr_irq
mrs r9, spsr_fiq
mrs r10, sp_fiq
mrs r11, lr_fiq
mrs r12, spsr_svc
stm r0!, {r4-r12}
mrs r4, sp_svc
mrs r5, lr_svc
mrs r6, spsr_abt
mrs r7, sp_abt
mrs r8, lr_abt
mrs r9, spsr_und
mrs r10, sp_und
mrs r11, lr_und
mrs r12, spsr
stm r0!, {r4-r12}
/* lr_mon is already saved by caller */
ldcopr r4, SCR
#endif
str r4, [sp, #SMC_CTX_SCR]
ldcopr r4, PMCR
str r4, [sp, #SMC_CTX_PMCR]
.endm
/*
* Macro to restore the `smc_ctx_t`, which includes the General purpose
* registers and banked mode registers, and exit from the monitor mode.
* r0 must point to the `smc_ctx_t` to restore from.
*/
.macro monitor_exit
/*
* Save the current sp and restore the smc context
* pointer to sp which will be used for handling the
* next SMC.
*/
str sp, [r0, #SMC_CTX_SP_MON]
mov sp, r0
/*
* Restore SCR first so that we access the right banked register
* when the other mode registers are restored.
*/
ldr r1, [r0, #SMC_CTX_SCR]
stcopr r1, SCR
isb
/*
* Restore the PMCR register.
*/
ldr r1, [r0, #SMC_CTX_PMCR]
stcopr r1, PMCR
/* Restore the banked registers including the current SPSR */
add r1, r0, #SMC_CTX_SP_USR
#if ARM_ARCH_MAJOR == 7 && !defined(ARMV7_SUPPORTS_VIRTUALIZATION)
/* Must be in secure state to restore Monitor mode */
ldcopr r4, SCR
bic r2, r4, #SCR_NS_BIT
stcopr r2, SCR
isb
cps #MODE32_sys
ldm r1!, {sp, lr}
cps #MODE32_irq
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_fiq
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_svc
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_abt
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_und
ldm r1!, {r2, sp, lr}
msr spsr_fsxc, r2
cps #MODE32_mon
ldm r1!, {r2}
msr spsr_fsxc, r2
stcopr r4, SCR
isb
#else
ldm r1!, {r4-r12}
msr sp_usr, r4
msr lr_usr, r5
msr spsr_irq, r6
msr sp_irq, r7
msr lr_irq, r8
msr spsr_fiq, r9
msr sp_fiq, r10
msr lr_fiq, r11
msr spsr_svc, r12
ldm r1!, {r4-r12}
msr sp_svc, r4
msr lr_svc, r5
msr spsr_abt, r6
msr sp_abt, r7
msr lr_abt, r8
msr spsr_und, r9
msr sp_und, r10
msr lr_und, r11
/*
* Use the `_fsxc` suffix explicitly to instruct the assembler
* to update all the 32 bits of SPSR. Else, by default, the
* assembler assumes `_fc` suffix which only modifies
* f->[31:24] and c->[7:0] bits of SPSR.
*/
msr spsr_fsxc, r12
#endif
/* Restore the LR */
ldr lr, [r0, #SMC_CTX_LR_MON]
/* Restore the rest of the general purpose registers */
ldm r0, {r0-r12}
eret
.endm
#endif /* __SMCCC_MACROS_S__ */

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include/lib/aarch64/smcc_helpers.h
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -7,84 +7,8 @@
#ifndef __SMCC_HELPERS_H__ #ifndef __SMCC_HELPERS_H__
#define __SMCC_HELPERS_H__ #define __SMCC_HELPERS_H__
#include <smcc.h> #if !ERROR_DEPRECATED
#include <smccc_helpers.h>
#endif
#ifndef __ASSEMBLY__
#include <context.h>
/* Convenience macros to return from SMC handler */
#define SMC_RET0(_h) { \
return (uint64_t) (_h); \
}
#define SMC_RET1(_h, _x0) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X0), (_x0)); \
SMC_RET0(_h); \
}
#define SMC_RET2(_h, _x0, _x1) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X1), (_x1)); \
SMC_RET1(_h, (_x0)); \
}
#define SMC_RET3(_h, _x0, _x1, _x2) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X2), (_x2)); \
SMC_RET2(_h, (_x0), (_x1)); \
}
#define SMC_RET4(_h, _x0, _x1, _x2, _x3) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X3), (_x3)); \
SMC_RET3(_h, (_x0), (_x1), (_x2)); \
}
#define SMC_RET5(_h, _x0, _x1, _x2, _x3, _x4) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X4), (_x4)); \
SMC_RET4(_h, (_x0), (_x1), (_x2), (_x3)); \
}
#define SMC_RET6(_h, _x0, _x1, _x2, _x3, _x4, _x5) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X5), (_x5)); \
SMC_RET5(_h, (_x0), (_x1), (_x2), (_x3), (_x4)); \
}
#define SMC_RET7(_h, _x0, _x1, _x2, _x3, _x4, _x5, _x6) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X6), (_x6)); \
SMC_RET6(_h, (_x0), (_x1), (_x2), (_x3), (_x4), (_x5)); \
}
#define SMC_RET8(_h, _x0, _x1, _x2, _x3, _x4, _x5, _x6, _x7) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X7), (_x7)); \
SMC_RET7(_h, (_x0), (_x1), (_x2), (_x3), (_x4), (_x5), (_x6)); \
}
/*
* Convenience macros to access general purpose registers using handle provided
* to SMC handler. These take the offset values defined in context.h
*/
#define SMC_GET_GP(_h, _g) \
read_ctx_reg((get_gpregs_ctx(_h)), (_g))
#define SMC_SET_GP(_h, _g, _v) \
write_ctx_reg((get_gpregs_ctx(_h)), (_g), (_v))
/*
* Convenience macros to access EL3 context registers using handle provided to
* SMC handler. These take the offset values defined in context.h
*/
#define SMC_GET_EL3(_h, _e) \
read_ctx_reg((get_el3state_ctx(_h)), (_e))
#define SMC_SET_EL3(_h, _e, _v) \
write_ctx_reg((get_el3state_ctx(_h)), (_e), (_v))
/* Return a UUID in the SMC return registers */
#define SMC_UUID_RET(_h, _uuid) \
SMC_RET4(handle, ((const uint32_t *) &(_uuid))[0], \
((const uint32_t *) &(_uuid))[1], \
((const uint32_t *) &(_uuid))[2], \
((const uint32_t *) &(_uuid))[3])
/*
* Helper macro to retrieve the SMC parameters from cpu_context_t.
*/
#define get_smc_params_from_ctx(_hdl, _x1, _x2, _x3, _x4) \
do { \
const gp_regs_t *regs = get_gpregs_ctx(_hdl); \
_x1 = read_ctx_reg(regs, CTX_GPREG_X1); \
_x2 = read_ctx_reg(regs, CTX_GPREG_X2); \
_x3 = read_ctx_reg(regs, CTX_GPREG_X3); \
_x4 = read_ctx_reg(regs, CTX_GPREG_X4); \
} while (0)
#endif /*__ASSEMBLY__*/
#endif /* __SMCC_HELPERS_H__ */ #endif /* __SMCC_HELPERS_H__ */

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/*
* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __SMCCC_HELPERS_H__
#define __SMCCC_HELPERS_H__
#include <smccc.h>
#ifndef __ASSEMBLY__
#include <context.h>
/* Convenience macros to return from SMC handler */
#define SMC_RET0(_h) { \
return (uint64_t) (_h); \
}
#define SMC_RET1(_h, _x0) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X0), (_x0)); \
SMC_RET0(_h); \
}
#define SMC_RET2(_h, _x0, _x1) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X1), (_x1)); \
SMC_RET1(_h, (_x0)); \
}
#define SMC_RET3(_h, _x0, _x1, _x2) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X2), (_x2)); \
SMC_RET2(_h, (_x0), (_x1)); \
}
#define SMC_RET4(_h, _x0, _x1, _x2, _x3) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X3), (_x3)); \
SMC_RET3(_h, (_x0), (_x1), (_x2)); \
}
#define SMC_RET5(_h, _x0, _x1, _x2, _x3, _x4) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X4), (_x4)); \
SMC_RET4(_h, (_x0), (_x1), (_x2), (_x3)); \
}
#define SMC_RET6(_h, _x0, _x1, _x2, _x3, _x4, _x5) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X5), (_x5)); \
SMC_RET5(_h, (_x0), (_x1), (_x2), (_x3), (_x4)); \
}
#define SMC_RET7(_h, _x0, _x1, _x2, _x3, _x4, _x5, _x6) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X6), (_x6)); \
SMC_RET6(_h, (_x0), (_x1), (_x2), (_x3), (_x4), (_x5)); \
}
#define SMC_RET8(_h, _x0, _x1, _x2, _x3, _x4, _x5, _x6, _x7) { \
write_ctx_reg((get_gpregs_ctx(_h)), (CTX_GPREG_X7), (_x7)); \
SMC_RET7(_h, (_x0), (_x1), (_x2), (_x3), (_x4), (_x5), (_x6)); \
}
/*
* Convenience macros to access general purpose registers using handle provided
* to SMC handler. These take the offset values defined in context.h
*/
#define SMC_GET_GP(_h, _g) \
read_ctx_reg((get_gpregs_ctx(_h)), (_g))
#define SMC_SET_GP(_h, _g, _v) \
write_ctx_reg((get_gpregs_ctx(_h)), (_g), (_v))
/*
* Convenience macros to access EL3 context registers using handle provided to
* SMC handler. These take the offset values defined in context.h
*/
#define SMC_GET_EL3(_h, _e) \
read_ctx_reg((get_el3state_ctx(_h)), (_e))
#define SMC_SET_EL3(_h, _e, _v) \
write_ctx_reg((get_el3state_ctx(_h)), (_e), (_v))
/* Return a UUID in the SMC return registers */
#define SMC_UUID_RET(_h, _uuid) \
SMC_RET4(handle, ((const uint32_t *) &(_uuid))[0], \
((const uint32_t *) &(_uuid))[1], \
((const uint32_t *) &(_uuid))[2], \
((const uint32_t *) &(_uuid))[3])
/*
* Helper macro to retrieve the SMC parameters from cpu_context_t.
*/
#define get_smc_params_from_ctx(_hdl, _x1, _x2, _x3, _x4) \
do { \
const gp_regs_t *regs = get_gpregs_ctx(_hdl); \
_x1 = read_ctx_reg(regs, CTX_GPREG_X1); \
_x2 = read_ctx_reg(regs, CTX_GPREG_X2); \
_x3 = read_ctx_reg(regs, CTX_GPREG_X3); \
_x4 = read_ctx_reg(regs, CTX_GPREG_X4); \
} while (0)
#endif /*__ASSEMBLY__*/
#endif /* __SMCCC_HELPERS_H__ */

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#ifndef __SMCC_H__ #ifndef __SMCC_H__
#define __SMCC_H__ #define __SMCC_H__
#include <utils_def.h>
/*******************************************************************************
* Bit definitions inside the function id as per the SMC calling convention
******************************************************************************/
#define FUNCID_TYPE_SHIFT U(31)
#define FUNCID_CC_SHIFT U(30)
#define FUNCID_OEN_SHIFT U(24)
#define FUNCID_NUM_SHIFT U(0)
#define FUNCID_TYPE_MASK U(0x1)
#define FUNCID_CC_MASK U(0x1)
#define FUNCID_OEN_MASK U(0x3f)
#define FUNCID_NUM_MASK U(0xffff)
#define FUNCID_TYPE_WIDTH U(1)
#define FUNCID_CC_WIDTH U(1)
#define FUNCID_OEN_WIDTH U(6)
#define FUNCID_NUM_WIDTH U(16)
#define GET_SMC_CC(id) ((id >> FUNCID_CC_SHIFT) & \
FUNCID_CC_MASK)
#define GET_SMC_TYPE(id) ((id >> FUNCID_TYPE_SHIFT) & \
FUNCID_TYPE_MASK)
#define SMC_64 U(1)
#define SMC_32 U(0)
#define SMC_OK U(0)
#define SMC_UNK -1
#define SMC_TYPE_FAST ULL(1)
#if !ERROR_DEPRECATED #if !ERROR_DEPRECATED
#define SMC_TYPE_STD ULL(0) #include <smccc.h>
#endif #endif
#define SMC_TYPE_YIELD U(0)
#define SMC_PREEMPTED -2
/*******************************************************************************
* Owning entity number definitions inside the function id as per the SMC
* calling convention
******************************************************************************/
#define OEN_ARM_START U(0)
#define OEN_ARM_END U(0)
#define OEN_CPU_START U(1)
#define OEN_CPU_END U(1)
#define OEN_SIP_START U(2)
#define OEN_SIP_END U(2)
#define OEN_OEM_START U(3)
#define OEN_OEM_END U(3)
#define OEN_STD_START U(4) /* Standard Service Calls */
#define OEN_STD_END U(4)
#define OEN_TAP_START U(48) /* Trusted Applications */
#define OEN_TAP_END U(49)
#define OEN_TOS_START U(50) /* Trusted OS */
#define OEN_TOS_END U(63)
#define OEN_LIMIT U(64)
#ifndef __ASSEMBLY__
#include <cassert.h>
#include <stdint.h>
#define SMCCC_MAJOR_VERSION U(1)
#define SMCCC_MINOR_VERSION U(1)
#define MAKE_SMCCC_VERSION(_major, _minor) (((_major) << 16) | (_minor))
/* Various flags passed to SMC handlers */
#define SMC_FROM_SECURE (U(0) << 0)
#define SMC_FROM_NON_SECURE (U(1) << 0)
#define is_caller_non_secure(_f) (!!(_f & SMC_FROM_NON_SECURE))
#define is_caller_secure(_f) (!(is_caller_non_secure(_f)))
/* The macro below is used to identify a Standard Service SMC call */
#define is_std_svc_call(_fid) ((((_fid) >> FUNCID_OEN_SHIFT) & \
FUNCID_OEN_MASK) == OEN_STD_START)
/* The macro below is used to identify a Arm Architectural Service SMC call */
#define is_arm_arch_svc_call(_fid) ((((_fid) >> FUNCID_OEN_SHIFT) & \
FUNCID_OEN_MASK) == OEN_ARM_START)
/* The macro below is used to identify a valid Fast SMC call */
#define is_valid_fast_smc(_fid) ((!(((_fid) >> 16) & U(0xff))) && \
(GET_SMC_TYPE(_fid) == SMC_TYPE_FAST))
/*
* Macro to define UUID for services. Apart from defining and initializing a
* uuid_t structure, this macro verifies that the first word of the defined UUID
* does not equal SMC_UNK. This is to ensure that the caller won't mistake the
* returned UUID in x0 for an invalid SMC error return
*/
#define DEFINE_SVC_UUID(_name, _tl, _tm, _th, _cl, _ch, \
_n0, _n1, _n2, _n3, _n4, _n5) \
CASSERT((uint32_t)(_tl) != (uint32_t) SMC_UNK, invalid_svc_uuid);\
static const uuid_t _name = { \
_tl, _tm, _th, _cl, _ch, \
{ _n0, _n1, _n2, _n3, _n4, _n5 } \
}
#endif /*__ASSEMBLY__*/
#endif /* __SMCC_H__ */ #endif /* __SMCC_H__ */

109
include/lib/smccc.h Normal file
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@ -0,0 +1,109 @@
/*
* Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __SMCCC_H__
#define __SMCCC_H__
#include <utils_def.h>
/*******************************************************************************
* Bit definitions inside the function id as per the SMC calling convention
******************************************************************************/
#define FUNCID_TYPE_SHIFT U(31)
#define FUNCID_CC_SHIFT U(30)
#define FUNCID_OEN_SHIFT U(24)
#define FUNCID_NUM_SHIFT U(0)
#define FUNCID_TYPE_MASK U(0x1)
#define FUNCID_CC_MASK U(0x1)
#define FUNCID_OEN_MASK U(0x3f)
#define FUNCID_NUM_MASK U(0xffff)
#define FUNCID_TYPE_WIDTH U(1)
#define FUNCID_CC_WIDTH U(1)
#define FUNCID_OEN_WIDTH U(6)
#define FUNCID_NUM_WIDTH U(16)
#define GET_SMC_CC(id) ((id >> FUNCID_CC_SHIFT) & \
FUNCID_CC_MASK)
#define GET_SMC_TYPE(id) ((id >> FUNCID_TYPE_SHIFT) & \
FUNCID_TYPE_MASK)
#define SMC_64 U(1)
#define SMC_32 U(0)
#define SMC_OK U(0)
#define SMC_UNK -1
#define SMC_TYPE_FAST ULL(1)
#if !ERROR_DEPRECATED
#define SMC_TYPE_STD ULL(0)
#endif
#define SMC_TYPE_YIELD U(0)
#define SMC_PREEMPTED -2
/*******************************************************************************
* Owning entity number definitions inside the function id as per the SMC
* calling convention
******************************************************************************/
#define OEN_ARM_START U(0)
#define OEN_ARM_END U(0)
#define OEN_CPU_START U(1)
#define OEN_CPU_END U(1)
#define OEN_SIP_START U(2)
#define OEN_SIP_END U(2)
#define OEN_OEM_START U(3)
#define OEN_OEM_END U(3)
#define OEN_STD_START U(4) /* Standard Service Calls */
#define OEN_STD_END U(4)
#define OEN_TAP_START U(48) /* Trusted Applications */
#define OEN_TAP_END U(49)
#define OEN_TOS_START U(50) /* Trusted OS */
#define OEN_TOS_END U(63)
#define OEN_LIMIT U(64)
#ifndef __ASSEMBLY__
#include <cassert.h>
#include <stdint.h>
#define SMCCC_MAJOR_VERSION U(1)
#define SMCCC_MINOR_VERSION U(1)
#define MAKE_SMCCC_VERSION(_major, _minor) (((_major) << 16) | (_minor))
/* Various flags passed to SMC handlers */
#define SMC_FROM_SECURE (U(0) << 0)
#define SMC_FROM_NON_SECURE (U(1) << 0)
#define is_caller_non_secure(_f) (!!(_f & SMC_FROM_NON_SECURE))
#define is_caller_secure(_f) (!(is_caller_non_secure(_f)))
/* The macro below is used to identify a Standard Service SMC call */
#define is_std_svc_call(_fid) ((((_fid) >> FUNCID_OEN_SHIFT) & \
FUNCID_OEN_MASK) == OEN_STD_START)
/* The macro below is used to identify a Arm Architectural Service SMC call */
#define is_arm_arch_svc_call(_fid) ((((_fid) >> FUNCID_OEN_SHIFT) & \
FUNCID_OEN_MASK) == OEN_ARM_START)
/* The macro below is used to identify a valid Fast SMC call */
#define is_valid_fast_smc(_fid) ((!(((_fid) >> 16) & U(0xff))) && \
(GET_SMC_TYPE(_fid) == SMC_TYPE_FAST))
/*
* Macro to define UUID for services. Apart from defining and initializing a
* uuid_t structure, this macro verifies that the first word of the defined UUID
* does not equal SMC_UNK. This is to ensure that the caller won't mistake the
* returned UUID in x0 for an invalid SMC error return
*/
#define DEFINE_SVC_UUID(_name, _tl, _tm, _th, _cl, _ch, \
_n0, _n1, _n2, _n3, _n4, _n5) \
CASSERT((uint32_t)(_tl) != (uint32_t) SMC_UNK, invalid_svc_uuid);\
static const uuid_t _name = { \
_tl, _tm, _th, _cl, _ch, \
{ _n0, _n1, _n2, _n3, _n4, _n5 } \
}
#endif /*__ASSEMBLY__*/
#endif /* __SMCCC_H__ */

4
lib/el3_runtime/aarch32/context_mgmt.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2016-2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -13,7 +13,7 @@
#include <context_mgmt.h> #include <context_mgmt.h>
#include <platform.h> #include <platform.h>
#include <platform_def.h> #include <platform_def.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <string.h> #include <string.h>
#include <utils.h> #include <utils.h>

4
lib/el3_runtime/aarch64/context_mgmt.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -15,7 +15,7 @@
#include <platform.h> #include <platform.h>
#include <platform_def.h> #include <platform_def.h>
#include <pubsub_events.h> #include <pubsub_events.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <spe.h> #include <spe.h>
#include <string.h> #include <string.h>
#include <sve.h> #include <sve.h>

4
lib/pmf/pmf_smc.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -7,7 +7,7 @@
#include <debug.h> #include <debug.h>
#include <platform.h> #include <platform.h>
#include <pmf.h> #include <pmf.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
/* /*
* This function is responsible for handling all PMF SMC calls. * This function is responsible for handling all PMF SMC calls.

2
lib/psci/psci_main.c
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@ -12,7 +12,7 @@
#include <platform.h> #include <platform.h>
#include <pmf.h> #include <pmf.h>
#include <runtime_instr.h> #include <runtime_instr.h>
#include <smcc.h> #include <smccc.h>
#include <string.h> #include <string.h>
#include "psci_private.h" #include "psci_private.h"

4
plat/arm/common/execution_state_switch.c
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
@ -10,7 +10,7 @@
#include <context_mgmt.h> #include <context_mgmt.h>
#include <plat_arm.h> #include <plat_arm.h>
#include <psci.h> #include <psci.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <string.h> #include <string.h>
#include <utils.h> #include <utils.h>

4
plat/rockchip/rk3399/drivers/dp/cdn_dp.c
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@ -1,11 +1,11 @@
/* /*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
* *
* SPDX-License-Identifier: BSD-3-Clause * SPDX-License-Identifier: BSD-3-Clause
*/ */
#include <cdn_dp.h> #include <cdn_dp.h>
#include <smcc.h> #include <smccc.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>

4
services/arm_arch_svc/arm_arch_svc_setup.c
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@ -8,8 +8,8 @@
#include <debug.h> #include <debug.h>
#include <errata_report.h> #include <errata_report.h>
#include <runtime_svc.h> #include <runtime_svc.h>
#include <smcc.h> #include <smccc.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <workaround_cve_2017_5715.h> #include <workaround_cve_2017_5715.h>
static int32_t smccc_version(void) static int32_t smccc_version(void)

4
services/std_svc/spm/spm_main.c
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@ -14,8 +14,8 @@
#include <platform.h> #include <platform.h>
#include <runtime_svc.h> #include <runtime_svc.h>
#include <secure_partition.h> #include <secure_partition.h>
#include <smcc.h> #include <smccc.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <spinlock.h> #include <spinlock.h>
#include <spm_svc.h> #include <spm_svc.h>
#include <utils.h> #include <utils.h>

2
services/std_svc/std_svc_setup.c
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@ -12,7 +12,7 @@
#include <runtime_instr.h> #include <runtime_instr.h>
#include <runtime_svc.h> #include <runtime_svc.h>
#include <sdei.h> #include <sdei.h>
#include <smcc_helpers.h> #include <smccc_helpers.h>
#include <spm_svc.h> #include <spm_svc.h>
#include <std_svc.h> #include <std_svc.h>
#include <stdint.h> #include <stdint.h>