| Varun Wadekar | 921b906 | 2015-08-25 17:03:14 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are met: |
| 6 | * |
| 7 | * Redistributions of source code must retain the above copyright notice, this |
| 8 | * list of conditions and the following disclaimer. |
| 9 | * |
| 10 | * Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * Neither the name of ARM nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without specific |
| 16 | * prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include <arch.h> |
| 32 | #include <arch_helpers.h> |
| 33 | #include <assert.h> |
| 34 | #include <bl_common.h> |
| 35 | #include <context_mgmt.h> |
| 36 | #include <debug.h> |
| 37 | #include <errno.h> |
| 38 | #include <memctrl.h> |
| 39 | #include <runtime_svc.h> |
| 40 | #include <tegra_private.h> |
| 41 | |
| 42 | /******************************************************************************* |
| 43 | * Tegra186 SiP SMCs |
| 44 | ******************************************************************************/ |
| 45 | #define TEGRA_SIP_NEW_VIDEOMEM_REGION 0x82000003 |
| 46 | |
| 47 | /******************************************************************************* |
| 48 | * This function is responsible for handling all SiP calls from the NS world |
| 49 | ******************************************************************************/ |
| 50 | uint64_t tegra186_sip_handler(uint32_t smc_fid, |
| 51 | uint64_t x1, |
| 52 | uint64_t x2, |
| 53 | uint64_t x3, |
| 54 | uint64_t x4, |
| 55 | void *cookie, |
| 56 | void *handle, |
| 57 | uint64_t flags) |
| 58 | { |
| 59 | uint32_t ns; |
| 60 | int err; |
| 61 | |
| 62 | /* Determine which security state this SMC originated from */ |
| 63 | ns = is_caller_non_secure(flags); |
| 64 | if (!ns) |
| 65 | SMC_RET1(handle, SMC_UNK); |
| 66 | |
| 67 | switch (smc_fid) { |
| 68 | |
| 69 | case TEGRA_SIP_NEW_VIDEOMEM_REGION: |
| 70 | |
| 71 | /* clean up the high bits */ |
| 72 | x1 = (uint32_t)x1; |
| 73 | x2 = (uint32_t)x2; |
| 74 | |
| 75 | /* |
| 76 | * Check if Video Memory overlaps TZDRAM (contains bl31/bl32) |
| 77 | * or falls outside of the valid DRAM range |
| 78 | */ |
| 79 | err = bl31_check_ns_address(x1, x2); |
| 80 | if (err) |
| 81 | SMC_RET1(handle, err); |
| 82 | |
| 83 | /* |
| 84 | * Check if Video Memory is aligned to 1MB. |
| 85 | */ |
| 86 | if ((x1 & 0xFFFFF) || (x2 & 0xFFFFF)) { |
| 87 | ERROR("Unaligned Video Memory base address!\n"); |
| 88 | SMC_RET1(handle, -ENOTSUP); |
| 89 | } |
| 90 | |
| 91 | /* new video memory carveout settings */ |
| 92 | tegra_memctrl_videomem_setup(x1, x2); |
| 93 | |
| 94 | SMC_RET1(handle, 0); |
| 95 | break; |
| 96 | |
| 97 | default: |
| 98 | ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); |
| 99 | break; |
| 100 | } |
| 101 | |
| 102 | SMC_RET1(handle, SMC_UNK); |
| 103 | } |
| 104 | |
| 105 | /* Define a runtime service descriptor for fast SMC calls */ |
| 106 | DECLARE_RT_SVC( |
| 107 | tegra186_sip_fast, |
| 108 | |
| 109 | OEN_SIP_START, |
| 110 | OEN_SIP_END, |
| 111 | SMC_TYPE_FAST, |
| 112 | NULL, |
| 113 | tegra186_sip_handler |
| 114 | ); |