1d38ceaf9SAlex Deucher /* 2d38ceaf9SAlex Deucher * Copyright 2008 Advanced Micro Devices, Inc. 3d38ceaf9SAlex Deucher * Copyright 2008 Red Hat Inc. 4d38ceaf9SAlex Deucher * Copyright 2009 Jerome Glisse. 5d38ceaf9SAlex Deucher * 6d38ceaf9SAlex Deucher * Permission is hereby granted, free of charge, to any person obtaining a 7d38ceaf9SAlex Deucher * copy of this software and associated documentation files (the "Software"), 8d38ceaf9SAlex Deucher * to deal in the Software without restriction, including without limitation 9d38ceaf9SAlex Deucher * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10d38ceaf9SAlex Deucher * and/or sell copies of the Software, and to permit persons to whom the 11d38ceaf9SAlex Deucher * Software is furnished to do so, subject to the following conditions: 12d38ceaf9SAlex Deucher * 13d38ceaf9SAlex Deucher * The above copyright notice and this permission notice shall be included in 14d38ceaf9SAlex Deucher * all copies or substantial portions of the Software. 15d38ceaf9SAlex Deucher * 16d38ceaf9SAlex Deucher * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17d38ceaf9SAlex Deucher * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18d38ceaf9SAlex Deucher * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19d38ceaf9SAlex Deucher * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20d38ceaf9SAlex Deucher * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21d38ceaf9SAlex Deucher * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22d38ceaf9SAlex Deucher * OTHER DEALINGS IN THE SOFTWARE. 23d38ceaf9SAlex Deucher * 24d38ceaf9SAlex Deucher * Authors: Dave Airlie 25d38ceaf9SAlex Deucher * Alex Deucher 26d38ceaf9SAlex Deucher * Jerome Glisse 27d38ceaf9SAlex Deucher */ 28d38ceaf9SAlex Deucher #include <drm/drmP.h> 29d38ceaf9SAlex Deucher #include "amdgpu.h" 30d38ceaf9SAlex Deucher #include "atom.h" 31d38ceaf9SAlex Deucher 32d38ceaf9SAlex Deucher #include <linux/slab.h> 33d38ceaf9SAlex Deucher #include <linux/acpi.h> 34d38ceaf9SAlex Deucher /* 35d38ceaf9SAlex Deucher * BIOS. 36d38ceaf9SAlex Deucher */ 37d38ceaf9SAlex Deucher 38f930b2e8Smonk.liu #define AMD_VBIOS_SIGNATURE " 761295520" 39f930b2e8Smonk.liu #define AMD_VBIOS_SIGNATURE_OFFSET 0x30 40f930b2e8Smonk.liu #define AMD_VBIOS_SIGNATURE_SIZE sizeof(AMD_VBIOS_SIGNATURE) 41f930b2e8Smonk.liu #define AMD_VBIOS_SIGNATURE_END (AMD_VBIOS_SIGNATURE_OFFSET + AMD_VBIOS_SIGNATURE_SIZE) 42f930b2e8Smonk.liu #define AMD_IS_VALID_VBIOS(p) ((p)[0] == 0x55 && (p)[1] == 0xAA) 43f930b2e8Smonk.liu #define AMD_VBIOS_LENGTH(p) ((p)[2] << 9) 44f930b2e8Smonk.liu 45919db4c1SKen Xue /* Check if current bios is an ATOM BIOS. 46919db4c1SKen Xue * Return true if it is ATOM BIOS. Otherwise, return false. 47919db4c1SKen Xue */ 48919db4c1SKen Xue static bool check_atom_bios(uint8_t *bios, size_t size) 49919db4c1SKen Xue { 50919db4c1SKen Xue uint16_t tmp, bios_header_start; 51919db4c1SKen Xue 52919db4c1SKen Xue if (!bios || size < 0x49) { 53919db4c1SKen Xue DRM_INFO("vbios mem is null or mem size is wrong\n"); 54919db4c1SKen Xue return false; 55919db4c1SKen Xue } 56919db4c1SKen Xue 57919db4c1SKen Xue if (!AMD_IS_VALID_VBIOS(bios)) { 58919db4c1SKen Xue DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]); 59919db4c1SKen Xue return false; 60919db4c1SKen Xue } 61919db4c1SKen Xue 62919db4c1SKen Xue bios_header_start = bios[0x48] | (bios[0x49] << 8); 63919db4c1SKen Xue if (!bios_header_start) { 64919db4c1SKen Xue DRM_INFO("Can't locate bios header\n"); 65919db4c1SKen Xue return false; 66919db4c1SKen Xue } 67919db4c1SKen Xue 68919db4c1SKen Xue tmp = bios_header_start + 4; 69919db4c1SKen Xue if (size < tmp) { 70919db4c1SKen Xue DRM_INFO("BIOS header is broken\n"); 71919db4c1SKen Xue return false; 72919db4c1SKen Xue } 73919db4c1SKen Xue 74919db4c1SKen Xue if (!memcmp(bios + tmp, "ATOM", 4) || 75919db4c1SKen Xue !memcmp(bios + tmp, "MOTA", 4)) { 76919db4c1SKen Xue DRM_DEBUG("ATOMBIOS detected\n"); 77919db4c1SKen Xue return true; 78919db4c1SKen Xue } 79919db4c1SKen Xue 80919db4c1SKen Xue return false; 81919db4c1SKen Xue } 82919db4c1SKen Xue 83d38ceaf9SAlex Deucher /* If you boot an IGP board with a discrete card as the primary, 84d38ceaf9SAlex Deucher * the IGP rom is not accessible via the rom bar as the IGP rom is 85d38ceaf9SAlex Deucher * part of the system bios. On boot, the system bios puts a 86d38ceaf9SAlex Deucher * copy of the igp rom at the start of vram if a discrete card is 87d38ceaf9SAlex Deucher * present. 88d38ceaf9SAlex Deucher */ 89d38ceaf9SAlex Deucher static bool igp_read_bios_from_vram(struct amdgpu_device *adev) 90d38ceaf9SAlex Deucher { 91d38ceaf9SAlex Deucher uint8_t __iomem *bios; 92d38ceaf9SAlex Deucher resource_size_t vram_base; 93d38ceaf9SAlex Deucher resource_size_t size = 256 * 1024; /* ??? */ 94d38ceaf9SAlex Deucher 952f7d10b3SJammy Zhou if (!(adev->flags & AMD_IS_APU)) 9639c640c0SAlex Deucher if (amdgpu_device_need_post(adev)) 97d38ceaf9SAlex Deucher return false; 98d38ceaf9SAlex Deucher 99d38ceaf9SAlex Deucher adev->bios = NULL; 100d38ceaf9SAlex Deucher vram_base = pci_resource_start(adev->pdev, 0); 101f31c94d1SXiangliang Yu bios = ioremap_wc(vram_base, size); 102d38ceaf9SAlex Deucher if (!bios) { 103d38ceaf9SAlex Deucher return false; 104d38ceaf9SAlex Deucher } 105d38ceaf9SAlex Deucher 106d38ceaf9SAlex Deucher adev->bios = kmalloc(size, GFP_KERNEL); 1073f12325aSRavikant B Sharma if (!adev->bios) { 108d38ceaf9SAlex Deucher iounmap(bios); 109d38ceaf9SAlex Deucher return false; 110d38ceaf9SAlex Deucher } 111a9f5db9cSEvan Quan adev->bios_size = size; 112d38ceaf9SAlex Deucher memcpy_fromio(adev->bios, bios, size); 113d38ceaf9SAlex Deucher iounmap(bios); 114919db4c1SKen Xue 115919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 116919db4c1SKen Xue kfree(adev->bios); 117919db4c1SKen Xue return false; 118919db4c1SKen Xue } 119919db4c1SKen Xue 120d38ceaf9SAlex Deucher return true; 121d38ceaf9SAlex Deucher } 122d38ceaf9SAlex Deucher 123d38ceaf9SAlex Deucher bool amdgpu_read_bios(struct amdgpu_device *adev) 124d38ceaf9SAlex Deucher { 125919db4c1SKen Xue uint8_t __iomem *bios; 126d38ceaf9SAlex Deucher size_t size; 127d38ceaf9SAlex Deucher 128d38ceaf9SAlex Deucher adev->bios = NULL; 129d38ceaf9SAlex Deucher /* XXX: some cards may return 0 for rom size? ddx has a workaround */ 130d38ceaf9SAlex Deucher bios = pci_map_rom(adev->pdev, &size); 131d38ceaf9SAlex Deucher if (!bios) { 132d38ceaf9SAlex Deucher return false; 133d38ceaf9SAlex Deucher } 134d38ceaf9SAlex Deucher 13518da4340SAlex Deucher adev->bios = kzalloc(size, GFP_KERNEL); 136d38ceaf9SAlex Deucher if (adev->bios == NULL) { 137d38ceaf9SAlex Deucher pci_unmap_rom(adev->pdev, bios); 138d38ceaf9SAlex Deucher return false; 139d38ceaf9SAlex Deucher } 140a9f5db9cSEvan Quan adev->bios_size = size; 14118da4340SAlex Deucher memcpy_fromio(adev->bios, bios, size); 142d38ceaf9SAlex Deucher pci_unmap_rom(adev->pdev, bios); 143919db4c1SKen Xue 144919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 145919db4c1SKen Xue kfree(adev->bios); 146919db4c1SKen Xue return false; 147919db4c1SKen Xue } 148919db4c1SKen Xue 149d38ceaf9SAlex Deucher return true; 150d38ceaf9SAlex Deucher } 151d38ceaf9SAlex Deucher 152f930b2e8Smonk.liu static bool amdgpu_read_bios_from_rom(struct amdgpu_device *adev) 153f930b2e8Smonk.liu { 154f930b2e8Smonk.liu u8 header[AMD_VBIOS_SIGNATURE_END+1] = {0}; 155f930b2e8Smonk.liu int len; 156f930b2e8Smonk.liu 157f930b2e8Smonk.liu if (!adev->asic_funcs->read_bios_from_rom) 158f930b2e8Smonk.liu return false; 159f930b2e8Smonk.liu 160f930b2e8Smonk.liu /* validate VBIOS signature */ 161f930b2e8Smonk.liu if (amdgpu_asic_read_bios_from_rom(adev, &header[0], sizeof(header)) == false) 162f930b2e8Smonk.liu return false; 163f930b2e8Smonk.liu header[AMD_VBIOS_SIGNATURE_END] = 0; 164f930b2e8Smonk.liu 165f930b2e8Smonk.liu if ((!AMD_IS_VALID_VBIOS(header)) || 166f930b2e8Smonk.liu 0 != memcmp((char *)&header[AMD_VBIOS_SIGNATURE_OFFSET], 167f930b2e8Smonk.liu AMD_VBIOS_SIGNATURE, 168f930b2e8Smonk.liu strlen(AMD_VBIOS_SIGNATURE))) 169f930b2e8Smonk.liu return false; 170f930b2e8Smonk.liu 171f930b2e8Smonk.liu /* valid vbios, go on */ 172f930b2e8Smonk.liu len = AMD_VBIOS_LENGTH(header); 173f930b2e8Smonk.liu len = ALIGN(len, 4); 174f930b2e8Smonk.liu adev->bios = kmalloc(len, GFP_KERNEL); 175f930b2e8Smonk.liu if (!adev->bios) { 176f930b2e8Smonk.liu DRM_ERROR("no memory to allocate for BIOS\n"); 177f930b2e8Smonk.liu return false; 178f930b2e8Smonk.liu } 179a9f5db9cSEvan Quan adev->bios_size = len; 180f930b2e8Smonk.liu 181f930b2e8Smonk.liu /* read complete BIOS */ 182919db4c1SKen Xue amdgpu_asic_read_bios_from_rom(adev, adev->bios, len); 183919db4c1SKen Xue 184919db4c1SKen Xue if (!check_atom_bios(adev->bios, len)) { 185919db4c1SKen Xue kfree(adev->bios); 186919db4c1SKen Xue return false; 187919db4c1SKen Xue } 188919db4c1SKen Xue 189919db4c1SKen Xue return true; 190f930b2e8Smonk.liu } 191f930b2e8Smonk.liu 192d38ceaf9SAlex Deucher static bool amdgpu_read_platform_bios(struct amdgpu_device *adev) 193d38ceaf9SAlex Deucher { 194d38ceaf9SAlex Deucher uint8_t __iomem *bios; 195d38ceaf9SAlex Deucher size_t size; 196d38ceaf9SAlex Deucher 197d38ceaf9SAlex Deucher adev->bios = NULL; 198d38ceaf9SAlex Deucher 199d38ceaf9SAlex Deucher bios = pci_platform_rom(adev->pdev, &size); 200d38ceaf9SAlex Deucher if (!bios) { 201d38ceaf9SAlex Deucher return false; 202d38ceaf9SAlex Deucher } 203d38ceaf9SAlex Deucher 204919db4c1SKen Xue adev->bios = kzalloc(size, GFP_KERNEL); 205919db4c1SKen Xue if (adev->bios == NULL) 206919db4c1SKen Xue return false; 207919db4c1SKen Xue 208919db4c1SKen Xue memcpy_fromio(adev->bios, bios, size); 209919db4c1SKen Xue 210919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 211919db4c1SKen Xue kfree(adev->bios); 212d38ceaf9SAlex Deucher return false; 213d38ceaf9SAlex Deucher } 214919db4c1SKen Xue 215a9f5db9cSEvan Quan adev->bios_size = size; 216d38ceaf9SAlex Deucher 217d38ceaf9SAlex Deucher return true; 218d38ceaf9SAlex Deucher } 219d38ceaf9SAlex Deucher 220d38ceaf9SAlex Deucher #ifdef CONFIG_ACPI 221d38ceaf9SAlex Deucher /* ATRM is used to get the BIOS on the discrete cards in 222d38ceaf9SAlex Deucher * dual-gpu systems. 223d38ceaf9SAlex Deucher */ 224d38ceaf9SAlex Deucher /* retrieve the ROM in 4k blocks */ 225d38ceaf9SAlex Deucher #define ATRM_BIOS_PAGE 4096 226d38ceaf9SAlex Deucher /** 227d38ceaf9SAlex Deucher * amdgpu_atrm_call - fetch a chunk of the vbios 228d38ceaf9SAlex Deucher * 229d38ceaf9SAlex Deucher * @atrm_handle: acpi ATRM handle 230d38ceaf9SAlex Deucher * @bios: vbios image pointer 231d38ceaf9SAlex Deucher * @offset: offset of vbios image data to fetch 232d38ceaf9SAlex Deucher * @len: length of vbios image data to fetch 233d38ceaf9SAlex Deucher * 234d38ceaf9SAlex Deucher * Executes ATRM to fetch a chunk of the discrete 235d38ceaf9SAlex Deucher * vbios image on PX systems (all asics). 236d38ceaf9SAlex Deucher * Returns the length of the buffer fetched. 237d38ceaf9SAlex Deucher */ 238d38ceaf9SAlex Deucher static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios, 239d38ceaf9SAlex Deucher int offset, int len) 240d38ceaf9SAlex Deucher { 241d38ceaf9SAlex Deucher acpi_status status; 242d38ceaf9SAlex Deucher union acpi_object atrm_arg_elements[2], *obj; 243d38ceaf9SAlex Deucher struct acpi_object_list atrm_arg; 244d38ceaf9SAlex Deucher struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; 245d38ceaf9SAlex Deucher 246d38ceaf9SAlex Deucher atrm_arg.count = 2; 247d38ceaf9SAlex Deucher atrm_arg.pointer = &atrm_arg_elements[0]; 248d38ceaf9SAlex Deucher 249d38ceaf9SAlex Deucher atrm_arg_elements[0].type = ACPI_TYPE_INTEGER; 250d38ceaf9SAlex Deucher atrm_arg_elements[0].integer.value = offset; 251d38ceaf9SAlex Deucher 252d38ceaf9SAlex Deucher atrm_arg_elements[1].type = ACPI_TYPE_INTEGER; 253d38ceaf9SAlex Deucher atrm_arg_elements[1].integer.value = len; 254d38ceaf9SAlex Deucher 255d38ceaf9SAlex Deucher status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer); 256d38ceaf9SAlex Deucher if (ACPI_FAILURE(status)) { 257d38ceaf9SAlex Deucher printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status)); 258d38ceaf9SAlex Deucher return -ENODEV; 259d38ceaf9SAlex Deucher } 260d38ceaf9SAlex Deucher 261d38ceaf9SAlex Deucher obj = (union acpi_object *)buffer.pointer; 262d38ceaf9SAlex Deucher memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length); 263d38ceaf9SAlex Deucher len = obj->buffer.length; 264d38ceaf9SAlex Deucher kfree(buffer.pointer); 265d38ceaf9SAlex Deucher return len; 266d38ceaf9SAlex Deucher } 267d38ceaf9SAlex Deucher 268d38ceaf9SAlex Deucher static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev) 269d38ceaf9SAlex Deucher { 270d38ceaf9SAlex Deucher int ret; 271d38ceaf9SAlex Deucher int size = 256 * 1024; 272d38ceaf9SAlex Deucher int i; 273d38ceaf9SAlex Deucher struct pci_dev *pdev = NULL; 274d38ceaf9SAlex Deucher acpi_handle dhandle, atrm_handle; 275d38ceaf9SAlex Deucher acpi_status status; 276d38ceaf9SAlex Deucher bool found = false; 277d38ceaf9SAlex Deucher 278d38ceaf9SAlex Deucher /* ATRM is for the discrete card only */ 2792f7d10b3SJammy Zhou if (adev->flags & AMD_IS_APU) 280d38ceaf9SAlex Deucher return false; 281d38ceaf9SAlex Deucher 282d38ceaf9SAlex Deucher while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { 283d38ceaf9SAlex Deucher dhandle = ACPI_HANDLE(&pdev->dev); 284d38ceaf9SAlex Deucher if (!dhandle) 285d38ceaf9SAlex Deucher continue; 286d38ceaf9SAlex Deucher 287d38ceaf9SAlex Deucher status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); 288d38ceaf9SAlex Deucher if (!ACPI_FAILURE(status)) { 289d38ceaf9SAlex Deucher found = true; 290d38ceaf9SAlex Deucher break; 291d38ceaf9SAlex Deucher } 292d38ceaf9SAlex Deucher } 293d38ceaf9SAlex Deucher 294d38ceaf9SAlex Deucher if (!found) { 295d38ceaf9SAlex Deucher while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) { 296d38ceaf9SAlex Deucher dhandle = ACPI_HANDLE(&pdev->dev); 297d38ceaf9SAlex Deucher if (!dhandle) 298d38ceaf9SAlex Deucher continue; 299d38ceaf9SAlex Deucher 300d38ceaf9SAlex Deucher status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); 301d38ceaf9SAlex Deucher if (!ACPI_FAILURE(status)) { 302d38ceaf9SAlex Deucher found = true; 303d38ceaf9SAlex Deucher break; 304d38ceaf9SAlex Deucher } 305d38ceaf9SAlex Deucher } 306d38ceaf9SAlex Deucher } 307d38ceaf9SAlex Deucher 308d38ceaf9SAlex Deucher if (!found) 309d38ceaf9SAlex Deucher return false; 310d38ceaf9SAlex Deucher 311d38ceaf9SAlex Deucher adev->bios = kmalloc(size, GFP_KERNEL); 312d38ceaf9SAlex Deucher if (!adev->bios) { 313d38ceaf9SAlex Deucher DRM_ERROR("Unable to allocate bios\n"); 314d38ceaf9SAlex Deucher return false; 315d38ceaf9SAlex Deucher } 316d38ceaf9SAlex Deucher 317d38ceaf9SAlex Deucher for (i = 0; i < size / ATRM_BIOS_PAGE; i++) { 318d38ceaf9SAlex Deucher ret = amdgpu_atrm_call(atrm_handle, 319d38ceaf9SAlex Deucher adev->bios, 320d38ceaf9SAlex Deucher (i * ATRM_BIOS_PAGE), 321d38ceaf9SAlex Deucher ATRM_BIOS_PAGE); 322d38ceaf9SAlex Deucher if (ret < ATRM_BIOS_PAGE) 323d38ceaf9SAlex Deucher break; 324d38ceaf9SAlex Deucher } 325d38ceaf9SAlex Deucher 326919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 327d38ceaf9SAlex Deucher kfree(adev->bios); 328d38ceaf9SAlex Deucher return false; 329d38ceaf9SAlex Deucher } 330a9f5db9cSEvan Quan adev->bios_size = size; 331d38ceaf9SAlex Deucher return true; 332d38ceaf9SAlex Deucher } 333d38ceaf9SAlex Deucher #else 334d38ceaf9SAlex Deucher static inline bool amdgpu_atrm_get_bios(struct amdgpu_device *adev) 335d38ceaf9SAlex Deucher { 336d38ceaf9SAlex Deucher return false; 337d38ceaf9SAlex Deucher } 338d38ceaf9SAlex Deucher #endif 339d38ceaf9SAlex Deucher 340d38ceaf9SAlex Deucher static bool amdgpu_read_disabled_bios(struct amdgpu_device *adev) 341d38ceaf9SAlex Deucher { 3422f7d10b3SJammy Zhou if (adev->flags & AMD_IS_APU) 343d38ceaf9SAlex Deucher return igp_read_bios_from_vram(adev); 344d38ceaf9SAlex Deucher else 345d38ceaf9SAlex Deucher return amdgpu_asic_read_disabled_bios(adev); 346d38ceaf9SAlex Deucher } 347d38ceaf9SAlex Deucher 348d38ceaf9SAlex Deucher #ifdef CONFIG_ACPI 349d38ceaf9SAlex Deucher static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) 350d38ceaf9SAlex Deucher { 351d38ceaf9SAlex Deucher struct acpi_table_header *hdr; 352d38ceaf9SAlex Deucher acpi_size tbl_size; 353d38ceaf9SAlex Deucher UEFI_ACPI_VFCT *vfct; 35417ed9be8SAlex Deucher unsigned offset; 355d38ceaf9SAlex Deucher 3566b11d1d6SLv Zheng if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr))) 357d38ceaf9SAlex Deucher return false; 3586b11d1d6SLv Zheng tbl_size = hdr->length; 359d38ceaf9SAlex Deucher if (tbl_size < sizeof(UEFI_ACPI_VFCT)) { 360d38ceaf9SAlex Deucher DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n"); 361919db4c1SKen Xue return false; 362d38ceaf9SAlex Deucher } 363d38ceaf9SAlex Deucher 364d38ceaf9SAlex Deucher vfct = (UEFI_ACPI_VFCT *)hdr; 36517ed9be8SAlex Deucher offset = vfct->VBIOSImageOffset; 36617ed9be8SAlex Deucher 36717ed9be8SAlex Deucher while (offset < tbl_size) { 36817ed9be8SAlex Deucher GOP_VBIOS_CONTENT *vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + offset); 36917ed9be8SAlex Deucher VFCT_IMAGE_HEADER *vhdr = &vbios->VbiosHeader; 37017ed9be8SAlex Deucher 37117ed9be8SAlex Deucher offset += sizeof(VFCT_IMAGE_HEADER); 37217ed9be8SAlex Deucher if (offset > tbl_size) { 37317ed9be8SAlex Deucher DRM_ERROR("ACPI VFCT image header truncated\n"); 374919db4c1SKen Xue return false; 375d38ceaf9SAlex Deucher } 376d38ceaf9SAlex Deucher 37717ed9be8SAlex Deucher offset += vhdr->ImageLength; 37817ed9be8SAlex Deucher if (offset > tbl_size) { 379d38ceaf9SAlex Deucher DRM_ERROR("ACPI VFCT image truncated\n"); 380919db4c1SKen Xue return false; 381d38ceaf9SAlex Deucher } 382d38ceaf9SAlex Deucher 38317ed9be8SAlex Deucher if (vhdr->ImageLength && 38417ed9be8SAlex Deucher vhdr->PCIBus == adev->pdev->bus->number && 38517ed9be8SAlex Deucher vhdr->PCIDevice == PCI_SLOT(adev->pdev->devfn) && 38617ed9be8SAlex Deucher vhdr->PCIFunction == PCI_FUNC(adev->pdev->devfn) && 38717ed9be8SAlex Deucher vhdr->VendorID == adev->pdev->vendor && 38817ed9be8SAlex Deucher vhdr->DeviceID == adev->pdev->device) { 389919db4c1SKen Xue adev->bios = kmemdup(&vbios->VbiosContent, 390919db4c1SKen Xue vhdr->ImageLength, 391919db4c1SKen Xue GFP_KERNEL); 392d38ceaf9SAlex Deucher 393919db4c1SKen Xue if (!check_atom_bios(adev->bios, vhdr->ImageLength)) { 394919db4c1SKen Xue kfree(adev->bios); 395919db4c1SKen Xue return false; 396919db4c1SKen Xue } 397919db4c1SKen Xue adev->bios_size = vhdr->ImageLength; 398919db4c1SKen Xue return true; 399d38ceaf9SAlex Deucher } 40017ed9be8SAlex Deucher } 40117ed9be8SAlex Deucher 40217ed9be8SAlex Deucher DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n"); 40317ed9be8SAlex Deucher return false; 40417ed9be8SAlex Deucher } 405d38ceaf9SAlex Deucher #else 406d38ceaf9SAlex Deucher static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) 407d38ceaf9SAlex Deucher { 408d38ceaf9SAlex Deucher return false; 409d38ceaf9SAlex Deucher } 410d38ceaf9SAlex Deucher #endif 411d38ceaf9SAlex Deucher 412d38ceaf9SAlex Deucher bool amdgpu_get_bios(struct amdgpu_device *adev) 413d38ceaf9SAlex Deucher { 414919db4c1SKen Xue if (amdgpu_atrm_get_bios(adev)) 4150cdd5005SAlex Deucher goto success; 416919db4c1SKen Xue 417919db4c1SKen Xue if (amdgpu_acpi_vfct_bios(adev)) 4180cdd5005SAlex Deucher goto success; 419919db4c1SKen Xue 420919db4c1SKen Xue if (igp_read_bios_from_vram(adev)) 4210cdd5005SAlex Deucher goto success; 422919db4c1SKen Xue 423919db4c1SKen Xue if (amdgpu_read_bios(adev)) 4240cdd5005SAlex Deucher goto success; 425919db4c1SKen Xue 426919db4c1SKen Xue if (amdgpu_read_bios_from_rom(adev)) 4270cdd5005SAlex Deucher goto success; 428919db4c1SKen Xue 429919db4c1SKen Xue if (amdgpu_read_disabled_bios(adev)) 4300cdd5005SAlex Deucher goto success; 431919db4c1SKen Xue 432919db4c1SKen Xue if (amdgpu_read_platform_bios(adev)) 4330cdd5005SAlex Deucher goto success; 434919db4c1SKen Xue 435919db4c1SKen Xue DRM_ERROR("Unable to locate a BIOS ROM\n"); 436d38ceaf9SAlex Deucher return false; 4370cdd5005SAlex Deucher 4380cdd5005SAlex Deucher success: 4396c885554SAlex Deucher adev->is_atom_fw = (adev->asic_type >= CHIP_VEGA10) ? true : false; 4400cdd5005SAlex Deucher return true; 441d38ceaf9SAlex Deucher } 442