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static inline void set_ttbr_tcr_mair(int el, uint64_t table, uint64_t tcr, uint64_t attr)
{
asm volatile("dsb sy");
if (el == 1) {
asm volatile("msr ttbr0_el1, %0" : : "r" (table) : "memory");
asm volatile("msr tcr_el1, %0" : : "r" (tcr) : "memory");
asm volatile("msr mair_el1, %0" : : "r" (attr) : "memory");
} else if (el == 2) {
asm volatile("msr ttbr0_el2, %0" : : "r" (table) : "memory");
asm volatile("msr tcr_el2, %0" : : "r" (tcr) : "memory");
asm volatile("msr mair_el2, %0" : : "r" (attr) : "memory");
} else if (el == 3) {
asm volatile("msr ttbr0_el3, %0" : : "r" (table) : "memory");
asm volatile("msr tcr_el3, %0" : : "r" (tcr) : "memory");
asm volatile("msr mair_el3, %0" : : "r" (attr) : "memory");
} else {
hang();
}
asm volatile("isb");
}
static inline uint64_t get_ttbr(int el)
{
uint64_t val;
if (el == 1) {
asm volatile("mrs %0, ttbr0_el1" : "=r" (val));
} else if (el == 2) {
asm volatile("mrs %0, ttbr0_el2" : "=r" (val));
} else if (el == 3) {
asm volatile("mrs %0, ttbr0_el3" : "=r" (val));
} else {
hang();
}
return val;
}
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