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Code Issues Releases Activity

Clean up SE TODOs, implement GIC nonsecure init

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This commit is contained in:
Michael Scire 2018-02-27 19:58:56 -08:00
parent 1463266190
commit 0508ee29d8
5 changed files with 17 additions and 6 deletions
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12
exosphere/src/interrupt.c
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@ -28,6 +28,18 @@ void intr_initialize_gic(void) {
GICC_BPR = 7;
}
/* Initializes Interrupt Groups 1-7 in the GIC. Called by pk2ldr. */
void intr_initialize_gic_nonsecure(void) {
for (unsigned int i = 1; i < 8; i++) {
GICD_IGROUPR[i] = 0xFFFFFFFF
}
for (unsigned int i = 0x20; i < 0xE0; i++) {
GICD_IPRIORITYR[i] = GIC_PRI_HIGHEST_NONSECURE;
}
GICD_CTLR = 1;
}
/* Sets GICC_CTLR to appropriate pre-sleep value. */
void intr_prepare_gicc_for_sleep(void) {
GICC_CTLR = 0x1E0;

2
exosphere/src/interrupt.h
View file

@ -22,6 +22,7 @@ static inline uintptr_t get_gicc_base(void) {
#define GICD_BASE (get_gicd_base())
#define GICC_BASE (get_gicc_base())
#define GICD_CTLR (*((volatile uint32_t *)(GICD_BASE + 0x000ull)))
#define GICD_IGROUPR ((volatile uint32_t *)(GICD_BASE + 0x080ull))
#define GICD_ISENABLER ((volatile uint32_t *)(GICD_BASE + 0x100ull))
#define GICD_ISPENDR ((volatile uint32_t *)(GICD_BASE + 0x200ull))
@ -46,6 +47,7 @@ void handle_registered_interrupt(void);
/* Initializes the GIC. TODO: This must be called during wakeup. */
void intr_initialize_gic(void);
void intr_initialize_gic_nonsecure(void);
void intr_prepare_gicc_for_sleep(void);

4
exosphere/src/package2.c
View file

@ -18,7 +18,9 @@ static void setup_se(void) {
/* Sanity check the Security Engine. */
se_verify_flags_cleared();
se_clear_interrupts();
/* Initialize Interrupts. */
intr_initialize_gic_nonsecure();
/* Perform some sanity initialization. */
volatile security_engine_t *p_security_engine = get_security_engine();

4
exosphere/src/se.c
View file

@ -71,10 +71,6 @@ void se_verify_flags_cleared(void) {
}
}
void se_clear_interrupts(void) {
/* TODO */
}
/* Set the flags for an AES keyslot. */
void set_aes_keyslot_flags(unsigned int keyslot, unsigned int flags) {
if (keyslot >= KEYSLOT_AES_MAX) {

1
exosphere/src/se.h
View file

@ -174,7 +174,6 @@ void se_operation_completed(void);
void se_check_error_status_reg(void);
void se_check_for_error(void);
void se_trigger_interrupt(void);
void se_clear_interrupts(void); /* TODO */
void se_verify_flags_cleared(void);