| Dima Zavin | 9caac25 | 2009-01-26 12:37:15 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009, Google Inc. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <debug.h> |
| 30 | #include <reg.h> |
| 31 | #include <string.h> |
| 32 | #include <sys/types.h> |
| 33 | #include <platform/iomap.h> |
| 34 | |
| 35 | #include "smem.h" |
| 36 | |
| 37 | struct smem_ptn { |
| 38 | char name[16]; |
| 39 | unsigned start; |
| 40 | unsigned size; |
| 41 | unsigned attr; |
| 42 | } __attribute__ ((__packed__)); |
| 43 | |
| 44 | struct smem_ptable { |
| 45 | #define _SMEM_PTABLE_MAGIC_1 0x55ee73aa |
| 46 | #define _SMEM_PTABLE_MAGIC_2 0xe35ebddb |
| 47 | unsigned magic[2]; |
| 48 | unsigned version; |
| 49 | unsigned len; |
| 50 | struct smem_ptn parts[16]; |
| 51 | } __attribute__ ((__packed__)); |
| 52 | |
| 53 | /* partition table from SMEM */ |
| 54 | static struct smem_ptable smem_ptable; |
| 55 | static unsigned smem_apps_flash_start; |
| 56 | |
| 57 | static void dump_smem_ptable(void) |
| 58 | { |
| 59 | int i; |
| 60 | |
| 61 | for (i = 0; i < 16; i++) { |
| 62 | struct smem_ptn *p = &smem_ptable.parts[i]; |
| 63 | if (p->name[0] == '\0') |
| 64 | continue; |
| 65 | dprintf(SPEW, "%d: %s offs=0x%08x size=0x%08x attr: 0x%08x\n", |
| 66 | i, p->name, p->start, p->size, p->attr); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | void smem_ptable_init(void) |
| 71 | { |
| 72 | unsigned i; |
| 73 | |
| 74 | smem_apps_flash_start = 0xffffffff; |
| 75 | |
| 76 | i = smem_read_alloc_entry(SMEM_AARM_PARTITION_TABLE, |
| 77 | &smem_ptable, sizeof(smem_ptable)); |
| 78 | if (i != 0) |
| 79 | return; |
| 80 | |
| 81 | if (smem_ptable.magic[0] != _SMEM_PTABLE_MAGIC_1 || |
| 82 | smem_ptable.magic[1] != _SMEM_PTABLE_MAGIC_2) |
| 83 | return; |
| 84 | |
| 85 | dump_smem_ptable(); |
| 86 | dprintf(INFO, "smem ptable found: ver: %d len: %d\n", |
| 87 | smem_ptable.version, smem_ptable.len); |
| 88 | |
| 89 | for (i = 0; i < smem_ptable.len; i++) { |
| 90 | if (!strcmp(smem_ptable.parts[i].name, "0:APPS")) |
| 91 | break; |
| 92 | } |
| 93 | if (i == smem_ptable.len) |
| 94 | return; |
| 95 | |
| 96 | smem_apps_flash_start = smem_ptable.parts[i].start; |
| 97 | } |
| 98 | |
| 99 | unsigned smem_get_apps_flash_start(void) |
| 100 | { |
| 101 | return smem_apps_flash_start; |
| 102 | } |