Пример #1
0
int board_early_init_r(void)
{
	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
	const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);

	/*
	 * Remap Boot flash region to caching-inhibited
	 * so that flash can be erased properly.
	 */

	/* Flush d-cache and invalidate i-cache of any FLASH data */
	flush_dcache();
	invalidate_icache();

	/* invalidate existing TLB entry for flash */
	disable_tlb(flash_esel);

	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
			0, flash_esel, BOOKE_PAGESZ_16M, 1);
	return 0;
}
Пример #2
0
int board_early_init_r(void)
{
	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
	const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);

	/*
	 * Remap Boot flash + PROMJET region to caching-inhibited
	 * so that flash can be erased properly.
	 */

	/* Flush d-cache and invalidate i-cache of any FLASH data */
	flush_dcache();
	invalidate_icache();

	/* invalidate existing TLB entry for flash + promjet */
	disable_tlb(flash_esel);

	set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,	/* tlb, epn, rpn */
		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,	/* perms, wimge */
		0, flash_esel, BOOKE_PAGESZ_256M, 1);	/* ts, esel, tsize, iprot */

	return 0;
}
Пример #3
0
/* invalid the TLBs for DDR and setup new ones to cover p_addr */
static int reset_tlb(phys_addr_t p_addr, u32 size, phys_addr_t *phys_offset)
{
	u32 vstart = CONFIG_SYS_DDR_SDRAM_BASE;
	unsigned long epn;
	u32 tsize, valid, ptr;
	int ddr_esel;

	clear_ddr_tlbs_phys(p_addr, size>>20);

	/* Setup new tlb to cover the physical address */
	setup_ddr_tlbs_phys(p_addr, size>>20);

	ptr = vstart;
	ddr_esel = find_tlb_idx((void *)ptr, 1);
	if (ddr_esel != -1) {
		read_tlbcam_entry(ddr_esel, &valid, &tsize, &epn, phys_offset);
	} else {
		printf("TLB error in function %s\n", __func__);
		return -1;
	}

	return 0;
}