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 tmp = bios[0x18] | (bios[0x19] << 8); 63919db4c1SKen Xue if (bios[tmp + 0x14] != 0x0) { 64919db4c1SKen Xue DRM_INFO("Not an x86 BIOS ROM\n"); 65919db4c1SKen Xue return false; 66919db4c1SKen Xue } 67919db4c1SKen Xue 68919db4c1SKen Xue bios_header_start = bios[0x48] | (bios[0x49] << 8); 69919db4c1SKen Xue if (!bios_header_start) { 70919db4c1SKen Xue DRM_INFO("Can't locate bios header\n"); 71919db4c1SKen Xue return false; 72919db4c1SKen Xue } 73919db4c1SKen Xue 74919db4c1SKen Xue tmp = bios_header_start + 4; 75919db4c1SKen Xue if (size < tmp) { 76919db4c1SKen Xue DRM_INFO("BIOS header is broken\n"); 77919db4c1SKen Xue return false; 78919db4c1SKen Xue } 79919db4c1SKen Xue 80919db4c1SKen Xue if (!memcmp(bios + tmp, "ATOM", 4) || 81919db4c1SKen Xue !memcmp(bios + tmp, "MOTA", 4)) { 82919db4c1SKen Xue DRM_DEBUG("ATOMBIOS detected\n"); 83919db4c1SKen Xue return true; 84919db4c1SKen Xue } 85919db4c1SKen Xue 86919db4c1SKen Xue return false; 87919db4c1SKen Xue } 88919db4c1SKen Xue 89d38ceaf9SAlex Deucher /* If you boot an IGP board with a discrete card as the primary, 90d38ceaf9SAlex Deucher * the IGP rom is not accessible via the rom bar as the IGP rom is 91d38ceaf9SAlex Deucher * part of the system bios. On boot, the system bios puts a 92d38ceaf9SAlex Deucher * copy of the igp rom at the start of vram if a discrete card is 93d38ceaf9SAlex Deucher * present. 94d38ceaf9SAlex Deucher */ 95d38ceaf9SAlex Deucher static bool igp_read_bios_from_vram(struct amdgpu_device *adev) 96d38ceaf9SAlex Deucher { 97d38ceaf9SAlex Deucher uint8_t __iomem *bios; 98d38ceaf9SAlex Deucher resource_size_t vram_base; 99d38ceaf9SAlex Deucher resource_size_t size = 256 * 1024; /* ??? */ 100d38ceaf9SAlex Deucher 1012f7d10b3SJammy Zhou if (!(adev->flags & AMD_IS_APU)) 102c836fec5SJim Qu if (amdgpu_need_post(adev)) 103d38ceaf9SAlex Deucher return false; 104d38ceaf9SAlex Deucher 105d38ceaf9SAlex Deucher adev->bios = NULL; 106d38ceaf9SAlex Deucher vram_base = pci_resource_start(adev->pdev, 0); 107d38ceaf9SAlex Deucher bios = ioremap(vram_base, size); 108d38ceaf9SAlex Deucher if (!bios) { 109d38ceaf9SAlex Deucher return false; 110d38ceaf9SAlex Deucher } 111d38ceaf9SAlex Deucher 112d38ceaf9SAlex Deucher adev->bios = kmalloc(size, GFP_KERNEL); 1133f12325aSRavikant B Sharma if (!adev->bios) { 114d38ceaf9SAlex Deucher iounmap(bios); 115d38ceaf9SAlex Deucher return false; 116d38ceaf9SAlex Deucher } 117a9f5db9cSEvan Quan adev->bios_size = size; 118d38ceaf9SAlex Deucher memcpy_fromio(adev->bios, bios, size); 119d38ceaf9SAlex Deucher iounmap(bios); 120919db4c1SKen Xue 121919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 122919db4c1SKen Xue kfree(adev->bios); 123919db4c1SKen Xue return false; 124919db4c1SKen Xue } 125919db4c1SKen Xue 126d38ceaf9SAlex Deucher return true; 127d38ceaf9SAlex Deucher } 128d38ceaf9SAlex Deucher 129d38ceaf9SAlex Deucher bool amdgpu_read_bios(struct amdgpu_device *adev) 130d38ceaf9SAlex Deucher { 131919db4c1SKen Xue uint8_t __iomem *bios; 132d38ceaf9SAlex Deucher size_t size; 133d38ceaf9SAlex Deucher 134d38ceaf9SAlex Deucher adev->bios = NULL; 135d38ceaf9SAlex Deucher /* XXX: some cards may return 0 for rom size? ddx has a workaround */ 136d38ceaf9SAlex Deucher bios = pci_map_rom(adev->pdev, &size); 137d38ceaf9SAlex Deucher if (!bios) { 138d38ceaf9SAlex Deucher return false; 139d38ceaf9SAlex Deucher } 140d38ceaf9SAlex Deucher 14118da4340SAlex Deucher adev->bios = kzalloc(size, GFP_KERNEL); 142d38ceaf9SAlex Deucher if (adev->bios == NULL) { 143d38ceaf9SAlex Deucher pci_unmap_rom(adev->pdev, bios); 144d38ceaf9SAlex Deucher return false; 145d38ceaf9SAlex Deucher } 146a9f5db9cSEvan Quan adev->bios_size = size; 14718da4340SAlex Deucher memcpy_fromio(adev->bios, bios, size); 148d38ceaf9SAlex Deucher pci_unmap_rom(adev->pdev, bios); 149919db4c1SKen Xue 150919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 151919db4c1SKen Xue kfree(adev->bios); 152919db4c1SKen Xue return false; 153919db4c1SKen Xue } 154919db4c1SKen Xue 155d38ceaf9SAlex Deucher return true; 156d38ceaf9SAlex Deucher } 157d38ceaf9SAlex Deucher 158f930b2e8Smonk.liu static bool amdgpu_read_bios_from_rom(struct amdgpu_device *adev) 159f930b2e8Smonk.liu { 160f930b2e8Smonk.liu u8 header[AMD_VBIOS_SIGNATURE_END+1] = {0}; 161f930b2e8Smonk.liu int len; 162f930b2e8Smonk.liu 163f930b2e8Smonk.liu if (!adev->asic_funcs->read_bios_from_rom) 164f930b2e8Smonk.liu return false; 165f930b2e8Smonk.liu 166f930b2e8Smonk.liu /* validate VBIOS signature */ 167f930b2e8Smonk.liu if (amdgpu_asic_read_bios_from_rom(adev, &header[0], sizeof(header)) == false) 168f930b2e8Smonk.liu return false; 169f930b2e8Smonk.liu header[AMD_VBIOS_SIGNATURE_END] = 0; 170f930b2e8Smonk.liu 171f930b2e8Smonk.liu if ((!AMD_IS_VALID_VBIOS(header)) || 172f930b2e8Smonk.liu 0 != memcmp((char *)&header[AMD_VBIOS_SIGNATURE_OFFSET], 173f930b2e8Smonk.liu AMD_VBIOS_SIGNATURE, 174f930b2e8Smonk.liu strlen(AMD_VBIOS_SIGNATURE))) 175f930b2e8Smonk.liu return false; 176f930b2e8Smonk.liu 177f930b2e8Smonk.liu /* valid vbios, go on */ 178f930b2e8Smonk.liu len = AMD_VBIOS_LENGTH(header); 179f930b2e8Smonk.liu len = ALIGN(len, 4); 180f930b2e8Smonk.liu adev->bios = kmalloc(len, GFP_KERNEL); 181f930b2e8Smonk.liu if (!adev->bios) { 182f930b2e8Smonk.liu DRM_ERROR("no memory to allocate for BIOS\n"); 183f930b2e8Smonk.liu return false; 184f930b2e8Smonk.liu } 185a9f5db9cSEvan Quan adev->bios_size = len; 186f930b2e8Smonk.liu 187f930b2e8Smonk.liu /* read complete BIOS */ 188919db4c1SKen Xue amdgpu_asic_read_bios_from_rom(adev, adev->bios, len); 189919db4c1SKen Xue 190919db4c1SKen Xue if (!check_atom_bios(adev->bios, len)) { 191919db4c1SKen Xue kfree(adev->bios); 192919db4c1SKen Xue return false; 193919db4c1SKen Xue } 194919db4c1SKen Xue 195919db4c1SKen Xue return true; 196f930b2e8Smonk.liu } 197f930b2e8Smonk.liu 198d38ceaf9SAlex Deucher static bool amdgpu_read_platform_bios(struct amdgpu_device *adev) 199d38ceaf9SAlex Deucher { 200d38ceaf9SAlex Deucher uint8_t __iomem *bios; 201d38ceaf9SAlex Deucher size_t size; 202d38ceaf9SAlex Deucher 203d38ceaf9SAlex Deucher adev->bios = NULL; 204d38ceaf9SAlex Deucher 205d38ceaf9SAlex Deucher bios = pci_platform_rom(adev->pdev, &size); 206d38ceaf9SAlex Deucher if (!bios) { 207d38ceaf9SAlex Deucher return false; 208d38ceaf9SAlex Deucher } 209d38ceaf9SAlex Deucher 210919db4c1SKen Xue adev->bios = kzalloc(size, GFP_KERNEL); 211919db4c1SKen Xue if (adev->bios == NULL) 212919db4c1SKen Xue return false; 213919db4c1SKen Xue 214919db4c1SKen Xue memcpy_fromio(adev->bios, bios, size); 215919db4c1SKen Xue 216919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 217919db4c1SKen Xue kfree(adev->bios); 218d38ceaf9SAlex Deucher return false; 219d38ceaf9SAlex Deucher } 220919db4c1SKen Xue 221a9f5db9cSEvan Quan adev->bios_size = size; 222d38ceaf9SAlex Deucher 223d38ceaf9SAlex Deucher return true; 224d38ceaf9SAlex Deucher } 225d38ceaf9SAlex Deucher 226d38ceaf9SAlex Deucher #ifdef CONFIG_ACPI 227d38ceaf9SAlex Deucher /* ATRM is used to get the BIOS on the discrete cards in 228d38ceaf9SAlex Deucher * dual-gpu systems. 229d38ceaf9SAlex Deucher */ 230d38ceaf9SAlex Deucher /* retrieve the ROM in 4k blocks */ 231d38ceaf9SAlex Deucher #define ATRM_BIOS_PAGE 4096 232d38ceaf9SAlex Deucher /** 233d38ceaf9SAlex Deucher * amdgpu_atrm_call - fetch a chunk of the vbios 234d38ceaf9SAlex Deucher * 235d38ceaf9SAlex Deucher * @atrm_handle: acpi ATRM handle 236d38ceaf9SAlex Deucher * @bios: vbios image pointer 237d38ceaf9SAlex Deucher * @offset: offset of vbios image data to fetch 238d38ceaf9SAlex Deucher * @len: length of vbios image data to fetch 239d38ceaf9SAlex Deucher * 240d38ceaf9SAlex Deucher * Executes ATRM to fetch a chunk of the discrete 241d38ceaf9SAlex Deucher * vbios image on PX systems (all asics). 242d38ceaf9SAlex Deucher * Returns the length of the buffer fetched. 243d38ceaf9SAlex Deucher */ 244d38ceaf9SAlex Deucher static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios, 245d38ceaf9SAlex Deucher int offset, int len) 246d38ceaf9SAlex Deucher { 247d38ceaf9SAlex Deucher acpi_status status; 248d38ceaf9SAlex Deucher union acpi_object atrm_arg_elements[2], *obj; 249d38ceaf9SAlex Deucher struct acpi_object_list atrm_arg; 250d38ceaf9SAlex Deucher struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; 251d38ceaf9SAlex Deucher 252d38ceaf9SAlex Deucher atrm_arg.count = 2; 253d38ceaf9SAlex Deucher atrm_arg.pointer = &atrm_arg_elements[0]; 254d38ceaf9SAlex Deucher 255d38ceaf9SAlex Deucher atrm_arg_elements[0].type = ACPI_TYPE_INTEGER; 256d38ceaf9SAlex Deucher atrm_arg_elements[0].integer.value = offset; 257d38ceaf9SAlex Deucher 258d38ceaf9SAlex Deucher atrm_arg_elements[1].type = ACPI_TYPE_INTEGER; 259d38ceaf9SAlex Deucher atrm_arg_elements[1].integer.value = len; 260d38ceaf9SAlex Deucher 261d38ceaf9SAlex Deucher status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer); 262d38ceaf9SAlex Deucher if (ACPI_FAILURE(status)) { 263d38ceaf9SAlex Deucher printk("failed to evaluate ATRM got %s\n", acpi_format_exception(status)); 264d38ceaf9SAlex Deucher return -ENODEV; 265d38ceaf9SAlex Deucher } 266d38ceaf9SAlex Deucher 267d38ceaf9SAlex Deucher obj = (union acpi_object *)buffer.pointer; 268d38ceaf9SAlex Deucher memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length); 269d38ceaf9SAlex Deucher len = obj->buffer.length; 270d38ceaf9SAlex Deucher kfree(buffer.pointer); 271d38ceaf9SAlex Deucher return len; 272d38ceaf9SAlex Deucher } 273d38ceaf9SAlex Deucher 274d38ceaf9SAlex Deucher static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev) 275d38ceaf9SAlex Deucher { 276d38ceaf9SAlex Deucher int ret; 277d38ceaf9SAlex Deucher int size = 256 * 1024; 278d38ceaf9SAlex Deucher int i; 279d38ceaf9SAlex Deucher struct pci_dev *pdev = NULL; 280d38ceaf9SAlex Deucher acpi_handle dhandle, atrm_handle; 281d38ceaf9SAlex Deucher acpi_status status; 282d38ceaf9SAlex Deucher bool found = false; 283d38ceaf9SAlex Deucher 284d38ceaf9SAlex Deucher /* ATRM is for the discrete card only */ 2852f7d10b3SJammy Zhou if (adev->flags & AMD_IS_APU) 286d38ceaf9SAlex Deucher return false; 287d38ceaf9SAlex Deucher 288d38ceaf9SAlex Deucher while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) { 289d38ceaf9SAlex Deucher dhandle = ACPI_HANDLE(&pdev->dev); 290d38ceaf9SAlex Deucher if (!dhandle) 291d38ceaf9SAlex Deucher continue; 292d38ceaf9SAlex Deucher 293d38ceaf9SAlex Deucher status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); 294d38ceaf9SAlex Deucher if (!ACPI_FAILURE(status)) { 295d38ceaf9SAlex Deucher found = true; 296d38ceaf9SAlex Deucher break; 297d38ceaf9SAlex Deucher } 298d38ceaf9SAlex Deucher } 299d38ceaf9SAlex Deucher 300d38ceaf9SAlex Deucher if (!found) { 301d38ceaf9SAlex Deucher while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_OTHER << 8, pdev)) != NULL) { 302d38ceaf9SAlex Deucher dhandle = ACPI_HANDLE(&pdev->dev); 303d38ceaf9SAlex Deucher if (!dhandle) 304d38ceaf9SAlex Deucher continue; 305d38ceaf9SAlex Deucher 306d38ceaf9SAlex Deucher status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); 307d38ceaf9SAlex Deucher if (!ACPI_FAILURE(status)) { 308d38ceaf9SAlex Deucher found = true; 309d38ceaf9SAlex Deucher break; 310d38ceaf9SAlex Deucher } 311d38ceaf9SAlex Deucher } 312d38ceaf9SAlex Deucher } 313d38ceaf9SAlex Deucher 314d38ceaf9SAlex Deucher if (!found) 315d38ceaf9SAlex Deucher return false; 316d38ceaf9SAlex Deucher 317d38ceaf9SAlex Deucher adev->bios = kmalloc(size, GFP_KERNEL); 318d38ceaf9SAlex Deucher if (!adev->bios) { 319d38ceaf9SAlex Deucher DRM_ERROR("Unable to allocate bios\n"); 320d38ceaf9SAlex Deucher return false; 321d38ceaf9SAlex Deucher } 322d38ceaf9SAlex Deucher 323d38ceaf9SAlex Deucher for (i = 0; i < size / ATRM_BIOS_PAGE; i++) { 324d38ceaf9SAlex Deucher ret = amdgpu_atrm_call(atrm_handle, 325d38ceaf9SAlex Deucher adev->bios, 326d38ceaf9SAlex Deucher (i * ATRM_BIOS_PAGE), 327d38ceaf9SAlex Deucher ATRM_BIOS_PAGE); 328d38ceaf9SAlex Deucher if (ret < ATRM_BIOS_PAGE) 329d38ceaf9SAlex Deucher break; 330d38ceaf9SAlex Deucher } 331d38ceaf9SAlex Deucher 332919db4c1SKen Xue if (!check_atom_bios(adev->bios, size)) { 333d38ceaf9SAlex Deucher kfree(adev->bios); 334d38ceaf9SAlex Deucher return false; 335d38ceaf9SAlex Deucher } 336a9f5db9cSEvan Quan adev->bios_size = size; 337d38ceaf9SAlex Deucher return true; 338d38ceaf9SAlex Deucher } 339d38ceaf9SAlex Deucher #else 340d38ceaf9SAlex Deucher static inline bool amdgpu_atrm_get_bios(struct amdgpu_device *adev) 341d38ceaf9SAlex Deucher { 342d38ceaf9SAlex Deucher return false; 343d38ceaf9SAlex Deucher } 344d38ceaf9SAlex Deucher #endif 345d38ceaf9SAlex Deucher 346d38ceaf9SAlex Deucher static bool amdgpu_read_disabled_bios(struct amdgpu_device *adev) 347d38ceaf9SAlex Deucher { 3482f7d10b3SJammy Zhou if (adev->flags & AMD_IS_APU) 349d38ceaf9SAlex Deucher return igp_read_bios_from_vram(adev); 350d38ceaf9SAlex Deucher else 351d38ceaf9SAlex Deucher return amdgpu_asic_read_disabled_bios(adev); 352d38ceaf9SAlex Deucher } 353d38ceaf9SAlex Deucher 354d38ceaf9SAlex Deucher #ifdef CONFIG_ACPI 355d38ceaf9SAlex Deucher static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) 356d38ceaf9SAlex Deucher { 357d38ceaf9SAlex Deucher struct acpi_table_header *hdr; 358d38ceaf9SAlex Deucher acpi_size tbl_size; 359d38ceaf9SAlex Deucher UEFI_ACPI_VFCT *vfct; 36017ed9be8SAlex Deucher unsigned offset; 361d38ceaf9SAlex Deucher 3626b11d1d6SLv Zheng if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr))) 363d38ceaf9SAlex Deucher return false; 3646b11d1d6SLv Zheng tbl_size = hdr->length; 365d38ceaf9SAlex Deucher if (tbl_size < sizeof(UEFI_ACPI_VFCT)) { 366d38ceaf9SAlex Deucher DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n"); 367919db4c1SKen Xue return false; 368d38ceaf9SAlex Deucher } 369d38ceaf9SAlex Deucher 370d38ceaf9SAlex Deucher vfct = (UEFI_ACPI_VFCT *)hdr; 37117ed9be8SAlex Deucher offset = vfct->VBIOSImageOffset; 37217ed9be8SAlex Deucher 37317ed9be8SAlex Deucher while (offset < tbl_size) { 37417ed9be8SAlex Deucher GOP_VBIOS_CONTENT *vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + offset); 37517ed9be8SAlex Deucher VFCT_IMAGE_HEADER *vhdr = &vbios->VbiosHeader; 37617ed9be8SAlex Deucher 37717ed9be8SAlex Deucher offset += sizeof(VFCT_IMAGE_HEADER); 37817ed9be8SAlex Deucher if (offset > tbl_size) { 37917ed9be8SAlex Deucher DRM_ERROR("ACPI VFCT image header truncated\n"); 380919db4c1SKen Xue return false; 381d38ceaf9SAlex Deucher } 382d38ceaf9SAlex Deucher 38317ed9be8SAlex Deucher offset += vhdr->ImageLength; 38417ed9be8SAlex Deucher if (offset > tbl_size) { 385d38ceaf9SAlex Deucher DRM_ERROR("ACPI VFCT image truncated\n"); 386919db4c1SKen Xue return false; 387d38ceaf9SAlex Deucher } 388d38ceaf9SAlex Deucher 38917ed9be8SAlex Deucher if (vhdr->ImageLength && 39017ed9be8SAlex Deucher vhdr->PCIBus == adev->pdev->bus->number && 39117ed9be8SAlex Deucher vhdr->PCIDevice == PCI_SLOT(adev->pdev->devfn) && 39217ed9be8SAlex Deucher vhdr->PCIFunction == PCI_FUNC(adev->pdev->devfn) && 39317ed9be8SAlex Deucher vhdr->VendorID == adev->pdev->vendor && 39417ed9be8SAlex Deucher vhdr->DeviceID == adev->pdev->device) { 395919db4c1SKen Xue adev->bios = kmemdup(&vbios->VbiosContent, 396919db4c1SKen Xue vhdr->ImageLength, 397919db4c1SKen Xue GFP_KERNEL); 398d38ceaf9SAlex Deucher 399919db4c1SKen Xue if (!check_atom_bios(adev->bios, vhdr->ImageLength)) { 400919db4c1SKen Xue kfree(adev->bios); 401919db4c1SKen Xue return false; 402919db4c1SKen Xue } 403919db4c1SKen Xue adev->bios_size = vhdr->ImageLength; 404919db4c1SKen Xue return true; 405d38ceaf9SAlex Deucher } 40617ed9be8SAlex Deucher } 40717ed9be8SAlex Deucher 40817ed9be8SAlex Deucher DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n"); 40917ed9be8SAlex Deucher return false; 41017ed9be8SAlex Deucher } 411d38ceaf9SAlex Deucher #else 412d38ceaf9SAlex Deucher static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) 413d38ceaf9SAlex Deucher { 414d38ceaf9SAlex Deucher return false; 415d38ceaf9SAlex Deucher } 416d38ceaf9SAlex Deucher #endif 417d38ceaf9SAlex Deucher 418d38ceaf9SAlex Deucher bool amdgpu_get_bios(struct amdgpu_device *adev) 419d38ceaf9SAlex Deucher { 420919db4c1SKen Xue if (amdgpu_atrm_get_bios(adev)) 4210cdd5005SAlex Deucher goto success; 422919db4c1SKen Xue 423919db4c1SKen Xue if (amdgpu_acpi_vfct_bios(adev)) 4240cdd5005SAlex Deucher goto success; 425919db4c1SKen Xue 426919db4c1SKen Xue if (igp_read_bios_from_vram(adev)) 4270cdd5005SAlex Deucher goto success; 428919db4c1SKen Xue 429919db4c1SKen Xue if (amdgpu_read_bios(adev)) 4300cdd5005SAlex Deucher goto success; 431919db4c1SKen Xue 432919db4c1SKen Xue if (amdgpu_read_bios_from_rom(adev)) 4330cdd5005SAlex Deucher goto success; 434919db4c1SKen Xue 435919db4c1SKen Xue if (amdgpu_read_disabled_bios(adev)) 4360cdd5005SAlex Deucher goto success; 437919db4c1SKen Xue 438919db4c1SKen Xue if (amdgpu_read_platform_bios(adev)) 4390cdd5005SAlex Deucher goto success; 440919db4c1SKen Xue 441919db4c1SKen Xue DRM_ERROR("Unable to locate a BIOS ROM\n"); 442d38ceaf9SAlex Deucher return false; 4430cdd5005SAlex Deucher 4440cdd5005SAlex Deucher success: 4456c885554SAlex Deucher adev->is_atom_fw = (adev->asic_type >= CHIP_VEGA10) ? true : false; 4460cdd5005SAlex Deucher return true; 447d38ceaf9SAlex Deucher } 448