C++ (Cpp) arm_write_ttbr Examples

Example #1

File: mmu.c Project: JeffreyLau/JJWD-K8_icsCream

void arm_mmu_init(void)
{
	int i;

	/* set some mmu specific control bits */
	arm_write_cr1(arm_read_cr1() & ~((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 (i=0; i < 4096; i++) {
#ifdef WITH_DMA_ZONE
		#if defined(PLATFORM_TCC892X)
		arm_mmu_map_section(i * MB, i * MB,  MMU_FLAG_READWRITE | MMU_FLAG_CACHED | MMU_FLAG_BUFFERED);
		#else
		arm_mmu_map_section(i * MB, i * MB,  MMU_FLAG_READWRITE | MMU_FLAG_CACHED);
		#endif
#else
		arm_mmu_map_section(i * MB, i * MB,  MMU_FLAG_READWRITE); // map everything uncached
#endif
	}

	/* 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_cr1(arm_read_cr1() | 0x1);
}

Example #2

File: mmu.c Project: machinaut/lk

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);
}