projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| bbc6fac3 SW |
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 | ||
| 18 | static u32 prop_buf[MAX_PROP_LEN / 4]; | |
| 19 | ||
| 20 | u32 *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 | ||
| 52 | err: | |
| 53 | if (!ret) | |
| 54 | printf("fsl_get_immr: Failed to find immr base\r\n"); | |
| 55 | ||
| 56 | return (u32 *)ret; | |
| 57 | } |