Function decode_win_sdram_fixup

freebsd/arm/mv/mv_common.c:1243–1283

}

static int
decode_win_sdram_fixup(void)
{
	struct mem_region mr[FDT_MEM_REGIONS];
	uint8_t window_valid[MV_WIN_DDR_MAX];
	int mr_cnt, err, i, j;
	uint32_t valid_win_num = 0;

	/* Grab physical memory regions information from device tree. */
	err = fdt_get_mem_regions(mr, &mr_cnt, NULL);
	if (err != 0)
		return (err);

	for (i = 0; i < MV_WIN_DDR_MAX; i++)
		window_valid[i] = 0;

	/* Try to match entries from device tree with settings from u-boot */
	for (i = 0; i < mr_cnt; i++) {
		for (j = 0; j < MV_WIN_DDR_MAX; j++) {
			if (ddr_is_active(j) &&
			    (ddr_base(j) == mr[i].mr_start) &&
			    (ddr_size(j) == mr[i].mr_size)) {
				window_valid[j] = 1;
				valid_win_num++;
			}
		}
	}

	if (mr_cnt != valid_win_num)
		return (EINVAL);

	/* Destroy windows without corresponding device tree entry */
	for (j = 0; j < MV_WIN_DDR_MAX; j++) {
		if (ddr_is_active(j) && (window_valid[j] != 1)) {
			printf("Disabling SDRAM decoding window: %d\n", j);
			ddr_disable(j);
		}
	}

	return (0);
}
/*
 * Check if we're able to cover all active DDR banks.
 */