void arm_mmu_init(void)
{
/* set some mmu specific control bits */
arm_write_sctlr(arm_read_sctlr() & ~((1<<29)|(1<<28)|(1<<0))); // access flag disabled, TEX remap disabled, mmu disabled
/* set up an identity-mapped translation table with cache disabled */
for (addr_t i=0; i < 4096; i++) {
arm_mmu_map_section(i * MB, i * MB, MMU_FLAG_READWRITE); // map everything uncached
}
/* set up the translation table base */
arm_write_ttbr((uint32_t)tt);
/* set up the domain access register */
arm_write_dacr(0x00000001);
/* turn on the mmu */
arm_write_sctlr(arm_read_sctlr() | 0x1);
}
void arch_disable_mmu(void)
{
arm_write_sctlr(arm_read_sctlr() & ~(1<<0)); // access flag disabled, TEX remap disabled, mmu disabled
}
void arch_disable_mmu(void)
{
arm_write_sctlr(arm_read_sctlr() & ~(1<<0)); // mmu disabled
}