1/* 2 * Freescale SOC support functions 3 * 4 * Author: Scott Wood <scottwood@freescale.com> 5 * 6 * Copyright (c) 2007 Freescale Semiconductor, Inc. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License version 2 as published 10 * by the Free Software Foundation. 11 */ 12 13#include "ops.h" 14#include "types.h" 15#include "fsl-soc.h" 16#include "stdio.h" 17 18static u32 prop_buf[MAX_PROP_LEN / 4]; 19 20u32 *fsl_get_immr(void) 21{ 22 void *soc; 23 unsigned long ret = 0; 24 25 soc = find_node_by_devtype(NULL, "soc"); 26 if (soc) { 27 int size; 28 u32 naddr; 29 30 size = getprop(soc, "#address-cells", prop_buf, MAX_PROP_LEN); 31 if (size == 4) 32 naddr = prop_buf[0]; 33 else 34 naddr = 2; 35 36 if (naddr != 1 && naddr != 2) 37 goto err; 38 39 size = getprop(soc, "ranges", prop_buf, MAX_PROP_LEN); 40 41 if (size < 12) 42 goto err; 43 if (prop_buf[0] != 0) 44 goto err; 45 if (naddr == 2 && prop_buf[1] != 0) 46 goto err; 47 48 if (!dt_xlate_addr(soc, prop_buf + naddr, 8, &ret)) 49 ret = 0; 50 } 51 52err: 53 if (!ret) 54 printf("fsl_get_immr: Failed to find immr base\r\n"); 55 56 return (u32 *)ret; 57} 58