transition.h File Reference

#include <stdint.h>
#include <arch/lib_helpers.h>

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Data Structures
struct	regs
struct	elx_state
struct	exc_state

Macros
#define	STACK_POP_BYTES   16
#define	STACK_PUSH_BYTES   -16
#define	EXC_VID_CUR_SP_EL0_SYNC   0
#define	EXC_VID_CUR_SP_EL0_IRQ   1
#define	EXC_VID_CUR_SP_EL0_FIRQ   2
#define	EXC_VID_CUR_SP_EL0_SERR   3
#define	EXC_VID_CUR_SP_ELX_SYNC   4
#define	EXC_VID_CUR_SP_ELX_IRQ   5
#define	EXC_VID_CUR_SP_ELX_FIQ   6
#define	EXC_VID_CUR_SP_ELX_SERR   7
#define	EXC_VID_LOW64_SYNC   8
#define	EXC_VID_LOW64_IRQ   9
#define	EXC_VID_LOW64_FIQ   10
#define	EXC_VID_LOW64_SERR   11
#define	EXC_VID_LOW32_SYNC   12
#define	EXC_VID_LOW32_IRQ   13
#define	EXC_VID_LOW32_FIQ   14
#define	EXC_VID_LOW32_SERR   15
#define	NUM_EXC_VIDS   16
#define	XI_INDEX(i)   X##i##_INDEX = i

Enumerations
enum	{   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) ,   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) ,   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) ,   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) ,   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) ,   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) ,   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) ,   XI_INDEX =(0) , XI_INDEX =(0) , XI_INDEX =(0) , XMAX_INDEX }

Functions
static uint8_t	get_eret_el (uint8_t el, uint8_t l_or_h)
static uint8_t	get_el_from_spsr (uint64_t spsr)
static uint8_t	get_mode_from_spsr (uint64_t spsr)
void	transition_to_el2 (void *entry, void *arg, uint64_t spsr)
void	exc_exit (struct regs *regs)
void	trans_switch (struct regs *regs)
void	exc_set_vbar (void)
void	exc_dispatch (struct exc_state *exc_state, uint64_t id)
void	exc_entry (struct exc_state *exc_state, uint64_t id)

Macro Definition Documentation

EXC_VID_CUR_SP_EL0_FIRQ

#define EXC_VID_CUR_SP_EL0_FIRQ   2

Definition at line 30 of file transition.h.

EXC_VID_CUR_SP_EL0_IRQ

#define EXC_VID_CUR_SP_EL0_IRQ   1

Definition at line 29 of file transition.h.

EXC_VID_CUR_SP_EL0_SERR

#define EXC_VID_CUR_SP_EL0_SERR   3

Definition at line 31 of file transition.h.

EXC_VID_CUR_SP_EL0_SYNC

#define EXC_VID_CUR_SP_EL0_SYNC   0

Definition at line 28 of file transition.h.

EXC_VID_CUR_SP_ELX_FIQ

#define EXC_VID_CUR_SP_ELX_FIQ   6

Definition at line 34 of file transition.h.

EXC_VID_CUR_SP_ELX_IRQ

#define EXC_VID_CUR_SP_ELX_IRQ   5

Definition at line 33 of file transition.h.

EXC_VID_CUR_SP_ELX_SERR

#define EXC_VID_CUR_SP_ELX_SERR   7

Definition at line 35 of file transition.h.

EXC_VID_CUR_SP_ELX_SYNC

#define EXC_VID_CUR_SP_ELX_SYNC   4

Definition at line 32 of file transition.h.

EXC_VID_LOW32_FIQ

#define EXC_VID_LOW32_FIQ   14

Definition at line 42 of file transition.h.

EXC_VID_LOW32_IRQ

#define EXC_VID_LOW32_IRQ   13

Definition at line 41 of file transition.h.

EXC_VID_LOW32_SERR

#define EXC_VID_LOW32_SERR   15

Definition at line 43 of file transition.h.

EXC_VID_LOW32_SYNC

#define EXC_VID_LOW32_SYNC   12

Definition at line 40 of file transition.h.

EXC_VID_LOW64_FIQ

#define EXC_VID_LOW64_FIQ   10

Definition at line 38 of file transition.h.

EXC_VID_LOW64_IRQ

#define EXC_VID_LOW64_IRQ   9

Definition at line 37 of file transition.h.

EXC_VID_LOW64_SERR

#define EXC_VID_LOW64_SERR   11

Definition at line 39 of file transition.h.

EXC_VID_LOW64_SYNC

#define EXC_VID_LOW64_SYNC   8

Definition at line 36 of file transition.h.

NUM_EXC_VIDS

#define NUM_EXC_VIDS   16

Definition at line 44 of file transition.h.

STACK_POP_BYTES

#define STACK_POP_BYTES   16

Definition at line 25 of file transition.h.

STACK_PUSH_BYTES

#define STACK_PUSH_BYTES   -16

Definition at line 26 of file transition.h.

XI_INDEX

#define XI_INDEX

(

i

)

X##i##_INDEX = i

Definition at line 51 of file transition.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XI_INDEX
XMAX_INDEX

Definition at line 53 of file transition.h.

Function Documentation

exc_dispatch()

void exc_dispatch	(	struct exc_state *	exc_state,
		uint64_t	id
	)

Definition at line 141 of file exception.c.

References BIOS_DEBUG, exc_exit(), EXC_RET_ABORT, EXC_RET_HANDLED_DUMP_STATE, EXC_RET_IGNORED, handle_exception(), NUM_EXC_VIDS, print_exception_and_die(), print_exception_info(), and printk.

Referenced by exc_entry().

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exc_entry()

void exc_entry	(	struct exc_state *	exc_state,
		uint64_t	id
	)

Definition at line 14 of file transition.c.

References elx_state::elr, exc_state::elx, exc_dispatch(), get_mode_from_spsr(), exc_state::regs, regs::sp, elx_state::spsr, and SPSR_USE_H.

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exc_exit()

void exc_exit

(

struct regs *

regs

)

Referenced by exc_dispatch().

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exc_set_vbar()

void exc_set_vbar

(

void

)

get_el_from_spsr()

static uint8_t get_el_from_spsr ( uint64_t  spsr )

inlinestatic

Definition at line 134 of file transition.h.

References CURRENT_EL_MASK, and CURRENT_EL_SHIFT.

Referenced by transition_to_el2().

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get_eret_el()

static uint8_t get_eret_el ( uint8_t  el, uint8_t  l_or_h  )

inlinestatic

Definition at line 125 of file transition.h.

References CURRENT_EL_SHIFT.

Referenced by run_bl31(), and run_payload().

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get_mode_from_spsr()

static uint8_t get_mode_from_spsr ( uint64_t  spsr )

inlinestatic

Definition at line 139 of file transition.h.

References SPSR_L_H_MASK.

Referenced by exc_entry().

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trans_switch()

void trans_switch

(

struct regs *

regs

)

Referenced by transition_to_el2().

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transition_to_el2()

void transition_to_el2	(	void *	entry,
		void *	arg,
		uint64_t	spsr
	)

Definition at line 33 of file transition.c.

References arg, assert, CPTR_EL3_TCPAC_DISABLE, CPTR_EL3_TFP_DISABLE, CPTR_EL3_TTA_DISABLE, EL2, elx_state::elr, exc_state::elx, get_el_from_spsr(), mmu_disable(), exc_state::regs, SCR_API, SCR_APK, SCR_FIEN, SCR_HCE, SCR_NS, SCR_RES1, SCR_RW, SCR_SMD, SCR_ST, SCTLR_RES1, elx_state::sp_elx, elx_state::spsr, SPSR_ERET_32, trans_switch(), and regs::x.

Referenced by run_payload().

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