diff options
Diffstat (limited to 'plat/nvidia/tegra/common/tegra_sip_calls.c')
-rw-r--r-- | plat/nvidia/tegra/common/tegra_sip_calls.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/plat/nvidia/tegra/common/tegra_sip_calls.c b/plat/nvidia/tegra/common/tegra_sip_calls.c new file mode 100644 index 0000000..1d79c80 --- /dev/null +++ b/plat/nvidia/tegra/common/tegra_sip_calls.c @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <arch_helpers.h> +#include <assert.h> +#include <bl_common.h> +#include <context_mgmt.h> +#include <debug.h> +#include <errno.h> +#include <memctrl.h> +#include <runtime_svc.h> +#include <tegra_private.h> + +#define TEGRA_SIP_NEW_VIDEOMEM_REGION 0x82000003 + +/******************************************************************************* + * This function is responsible for handling all SiP calls from the NS world + ******************************************************************************/ +uint64_t tegra_sip_handler(uint32_t smc_fid, + uint64_t x1, + uint64_t x2, + uint64_t x3, + uint64_t x4, + void *cookie, + void *handle, + uint64_t flags) +{ + uint32_t ns; + int err; + + /* Determine which security state this SMC originated from */ + ns = is_caller_non_secure(flags); + if (!ns) + SMC_RET1(handle, SMC_UNK); + + switch (smc_fid) { + + case TEGRA_SIP_NEW_VIDEOMEM_REGION: + + /* + * Check if Video Memory overlaps TZDRAM (contains bl31/bl32) + * or falls outside of the valid DRAM range + */ + err = bl31_check_ns_address(x1, x2); + if (err) + SMC_RET1(handle, err); + + /* + * Check if Video Memory is aligned to 1MB. + */ + if ((x1 & 0xFFFFF) || (x2 & 0xFFFFF)) { + ERROR("Unaligned Video Memory base address!\n"); + SMC_RET1(handle, -ENOTSUP); + } + + /* new video memory carveout settings */ + tegra_memctrl_videomem_setup(x1, x2); + + SMC_RET1(handle, 0); + + default: + ERROR("%s: unhandled SMC (0x%x)\n", __func__, smc_fid); + break; + } + + SMC_RET1(handle, SMC_UNK); +} + +/* Define a runtime service descriptor for fast SMC calls */ +DECLARE_RT_SVC( + tegra_sip_fast, + + OEN_SIP_START, + OEN_SIP_END, + SMC_TYPE_FAST, + NULL, + tegra_sip_handler +); |