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_helpers.h> 32 #include <assert.h> 33 #include <bl_common.h> 34 #include <context_mgmt.h> 35 #include <debug.h> 36 #include <errno.h> 37 #include <memctrl.h> 38 #include <runtime_svc.h> 39 #include <tegra_private.h> 40 41 #define TEGRA_SIP_NEW_VIDEOMEM_REGION 0x82000003 42 43 /******************************************************************************* 44 * This function is responsible for handling all SiP calls from the NS world 45 ******************************************************************************/ 46 uint64_t tegra_sip_handler(uint32_t smc_fid, 47 uint64_t x1, 48 uint64_t x2, 49 uint64_t x3, 50 uint64_t x4, 51 void *cookie, 52 void *handle, 53 uint64_t flags) 54 { 55 uint32_t ns; 56 int err; 57 58 /* Determine which security state this SMC originated from */ 59 ns = is_caller_non_secure(flags); 60 if (!ns) 61 SMC_RET1(handle, SMC_UNK); 62 63 switch (smc_fid) { 64 65 case TEGRA_SIP_NEW_VIDEOMEM_REGION: 66 67 /* 68 * Check if Video Memory overlaps TZDRAM (contains bl31/bl32) 69 * or falls outside of the valid DRAM range 70 */ 71 err = bl31_check_ns_address(x1, x2); 72 if (err) 73 SMC_RET1(handle, err); 74 75 /* 76 * Check if Video Memory is aligned to 1MB. 77 */ 78 if ((x1 & 0xFFFFF) || (x2 & 0xFFFFF)) { 79 ERROR("Unaligned Video Memory base address!\n"); 80 SMC_RET1(handle, -ENOTSUP); 81 } 82 83 /* new video memory carveout settings */ 84 tegra_memctrl_videomem_setup(x1, x2); 85 86 SMC_RET1(handle, 0); 87 88 default: 89 ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); 90 break; 91 } 92 93 SMC_RET1(handle, SMC_UNK); 94 } 95 96 /* Define a runtime service descriptor for fast SMC calls */ 97 DECLARE_RT_SVC( 98 tegra_sip_fast, 99 100 OEN_SIP_START, 101 OEN_SIP_END, 102 SMC_TYPE_FAST, 103 NULL, 104 tegra_sip_handler 105 ); 106