Smita Ghosh | 7a4f3b7 | 2013-03-15 13:48:30 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 2 | * |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
| 12 | * * Neither the name of The Linux Foundation nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <reg.h> |
| 30 | #include <debug.h> |
| 31 | #include <malloc.h> |
| 32 | #include <smem.h> |
| 33 | #include <stdint.h> |
| 34 | #include <libfdt.h> |
Deepa Dinamani | 61e3a0c | 2012-10-19 14:33:37 -0700 | [diff] [blame] | 35 | #include <platform.h> |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 36 | #include <platform/iomap.h> |
| 37 | #include <dev_tree.h> |
| 38 | |
| 39 | #define SIZE_1M (1024 * 1024) |
| 40 | |
Deepa Dinamani | 61e3a0c | 2012-10-19 14:33:37 -0700 | [diff] [blame] | 41 | static struct smem_ram_ptable ram_ptable; |
| 42 | |
Deepa Dinamani | 61e3a0c | 2012-10-19 14:33:37 -0700 | [diff] [blame] | 43 | struct smem_ram_ptable* target_smem_ram_ptable_init() |
| 44 | { |
| 45 | /* Make sure RAM partition table is initialized */ |
| 46 | ASSERT(smem_ram_ptable_init(&ram_ptable)); |
| 47 | |
| 48 | return &ram_ptable; |
| 49 | } |
| 50 | |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 51 | /* Funtion to add the ram partition entries into device tree. |
| 52 | * The function assumes that all the entire fixed memory regions should |
| 53 | * be listed in the first bank of the passed in ddr regions. |
| 54 | */ |
| 55 | uint32_t target_dev_tree_mem(void *fdt, uint32_t memory_node_offset) |
| 56 | { |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 57 | unsigned int i; |
| 58 | int ret; |
| 59 | |
Deepa Dinamani | 460127d | 2012-11-28 12:17:34 -0800 | [diff] [blame] | 60 | for (i = 0; i < ram_ptable.len; i++) |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 61 | { |
Deepa Dinamani | 460127d | 2012-11-28 12:17:34 -0800 | [diff] [blame] | 62 | if ((ram_ptable.parts[i].category == SDRAM) && |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 63 | (ram_ptable.parts[i].type == SYS_MEMORY)) |
| 64 | { |
Deepa Dinamani | 460127d | 2012-11-28 12:17:34 -0800 | [diff] [blame] | 65 | if (ram_ptable.parts[i].start == 0) |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 66 | { |
| 67 | /* Pass along all other usable memory regions to Linux */ |
Deepa Dinamani | 460127d | 2012-11-28 12:17:34 -0800 | [diff] [blame] | 68 | /* Any memory not accessible by the kernel which is below the |
| 69 | * kernel start address must *not* be given to the kernel. |
| 70 | */ |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 71 | ret = dev_tree_add_mem_info(fdt, |
| 72 | memory_node_offset, |
Smita Ghosh | 7b94505 | 2013-08-01 13:42:29 -0700 | [diff] [blame] | 73 | ram_ptable.parts[i].start + 3*SIZE_1M, |
| 74 | ram_ptable.parts[i].size - 3*SIZE_1M); |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 75 | |
Deepa Dinamani | 460127d | 2012-11-28 12:17:34 -0800 | [diff] [blame] | 76 | } |
| 77 | else |
| 78 | { |
| 79 | /* Pass along all other usable memory regions to Linux */ |
| 80 | ret = dev_tree_add_mem_info(fdt, |
| 81 | memory_node_offset, |
| 82 | ram_ptable.parts[i].start, |
| 83 | ram_ptable.parts[i].size); |
| 84 | |
| 85 | } |
| 86 | |
| 87 | |
| 88 | if (ret) |
| 89 | { |
| 90 | dprintf(CRITICAL, "Failed to add memory bank addresses to device tree\n"); |
| 91 | goto target_dev_tree_mem_err; |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | target_dev_tree_mem_err: |
| 97 | |
| 98 | return ret; |
| 99 | } |
| 100 | |
| 101 | void *target_get_scratch_address(void) |
| 102 | { |
Deepa Dinamani | 61e3a0c | 2012-10-19 14:33:37 -0700 | [diff] [blame] | 103 | return ((void *) VA((addr_t)SCRATCH_REGION1)); |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | unsigned target_get_max_flash_size(void) |
| 107 | { |
Deepa Dinamani | 61e3a0c | 2012-10-19 14:33:37 -0700 | [diff] [blame] | 108 | return (SCRATCH_REGION1_SIZE + SCRATCH_REGION2_SIZE); |
Deepa Dinamani | 28c0ffe | 2012-09-24 11:45:21 -0700 | [diff] [blame] | 109 | } |