/* * Copyright 2008 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Dave Airlie * Alex Deucher * Jerome Glisse */ #include "amdgpu.h"#include "atom.h" #include <linux/device.h>#include <linux/pci.h>#include <linux/slab.h>#include <linux/acpi.h>/* * BIOS. */ #define AMD_VBIOS_SIGNATURE " 761295520"#define AMD_VBIOS_SIGNATURE_OFFSET 0x30#define AMD_VBIOS_SIGNATURE_SIZE sizeof(AMD_VBIOS_SIGNATURE)#define AMD_VBIOS_SIGNATURE_END (AMD_VBIOS_SIGNATURE_OFFSET + AMD_VBIOS_SIGNATURE_SIZE)#define AMD_IS_VALID_VBIOS(p) ((p)[0] == 0x55 && (p)[1] == 0xAA)#define AMD_VBIOS_LENGTH(p) ((p)[2] << 9) /* Check if current bios is an ATOM BIOS. * Return true if it is ATOM BIOS. Otherwise, return false. */static bool check_atom_bios(uint8_t *bios, size_t size){ uint16_t tmp, bios_header_start; if (!bios || size < 0x49) { DRM_INFO("vbios mem is null or mem size is wrong\n"); return false; } if (!AMD_IS_VALID_VBIOS(bios)) { DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]); return false; } bios_header_start = bios[0x48] | (bios[0x49] << 8); if (!bios_header_start) { DRM_INFO("Can't locate bios header\n"); return false; } tmp = bios_header_start + 4; if (size < tmp) { DRM_INFO("BIOS header is broken\n"); return false; } if (!memcmp(bios + tmp, "ATOM", 4) || !memcmp(bios + tmp, "MOTA", 4)) { DRM_DEBUG("ATOMBIOS detected\n"); return true; } return false;} /* If you boot an IGP board with a discrete card as the primary, * the IGP rom is not accessible via the rom bar as the IGP rom is * part of the system bios. On boot, the system bios puts a * copy of the igp rom at the start of vram if a discrete card is * present. * For SR-IOV, the vbios image is also put in VRAM in the VF. */static bool amdgpu_read_bios_from_vram(struct amdgpu_device *adev){ uint8_t __iomem *bios; resource_size_t vram_base; resource_size_t size = 256 * 1024; /* ??? */ if (!(adev->flags & AMD_IS_APU)) if (amdgpu_device_need_post(adev)) return false; /* FB BAR not enabled */ if (pci_resource_len(adev->pdev, 0) == 0) return false; adev->bios = NULL; vram_base = pci_resource_start(adev->pdev, 0); bios = ioremap_wc(vram_base, size); if (!bios) return false; adev->bios = kmalloc(size, GFP_KERNEL); if (!adev->bios) { iounmap(bios); return false; } adev->bios_size = size; memcpy_fromio(adev->bios, bios, size); iounmap(bios); if (!check_atom_bios(adev->bios, size)) { kfree(adev->bios); return false; } return true;} bool amdgpu_read_bios(struct amdgpu_device *adev){ uint8_t __iomem *bios; size_t size; adev->bios = NULL; /* XXX: some cards may return 0 for rom size? ddx has a workaround */ bios = pci_map_rom(adev->pdev, &size); if (!bios) return false; adev->bios = kzalloc(size, GFP_KERNEL); if (adev->bios == NULL) { pci_unmap_rom(adev->pdev, bios); return false; } adev->bios_size = size; memcpy_fromio(adev->bios, bios, size); pci_unmap_rom(adev->pdev, bios); if (!check_atom_bios(adev->bios, size)) { kfree(adev->bios); return false; } return true;} static bool amdgpu_read_bios_from_rom(struct amdgpu_device *adev){ u8 header[AMD_VBIOS_SIGNATURE_END+1] = {0}; int len; if (!adev->asic_funcs || !adev->asic_funcs->read_bios_from_rom) return false; /* validate VBIOS signature */ if (amdgpu_asic_read_bios_from_rom(adev, &header[0], sizeof(header)) == false) return false; header[AMD_VBIOS_SIGNATURE_END] = 0; if ((!AMD_IS_VALID_VBIOS(header)) || memcmp((char *)&header[AMD_VBIOS_SIGNATURE_OFFSET], AMD_VBIOS_SIGNATURE, strlen(AMD_VBIOS_SIGNATURE)) != 0) return false; /* valid vbios, go on */ len = AMD_VBIOS_LENGTH(header); len = ALIGN(len, 4); adev->bios = kmalloc(len, GFP_KERNEL); if (!adev->bios) { DRM_ERROR("no memory to allocate for BIOS\n"); return false; } adev->bios_size = len; /* read complete BIOS */ amdgpu_asic_read_bios_from_rom(adev, adev->bios, len); if (!check_atom_bios(adev->bios, len)) { kfree(adev->bios); return false; } return true;} static bool amdgpu_read_platform_bios(struct amdgpu_device *adev){ phys_addr_t rom = adev->pdev->rom; size_t romlen = adev->pdev->romlen; void __iomem *bios; adev->bios = NULL; if (!rom || romlen == 0) return false; adev->bios = kzalloc(romlen, GFP_KERNEL); if (!adev->bios) return false; bios = ioremap(rom, romlen); if (!bios) goto free_bios; memcpy_fromio(adev->bios, bios, romlen); iounmap(bios); if (!check_atom_bios(adev->bios, romlen)) goto free_bios; adev->bios_size = romlen; return true;free_bios: kfree(adev->bios); return false;} #ifdef CONFIG_ACPI/* ATRM is used to get the BIOS on the discrete cards in * dual-gpu systems. *//* retrieve the ROM in 4k blocks */#define ATRM_BIOS_PAGE 4096/** * amdgpu_atrm_call - fetch a chunk of the vbios * * @atrm_handle: acpi ATRM handle * @bios: vbios image pointer * @offset: offset of vbios image data to fetch * @len: length of vbios image data to fetch * * Executes ATRM to fetch a chunk of the discrete * vbios image on PX systems (all asics). * Returns the length of the buffer fetched. */static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios, int offset, int len){ acpi_status status; union acpi_object atrm_arg_elements[2], *obj; struct acpi_object_list atrm_arg; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; atrm_arg.count = 2; atrm_arg.pointer = &atrm_arg_elements[0]; atrm_arg_elements[0].type = ACPI_TYPE_INTEGER; atrm_arg_elements[0].integer.value = offset; atrm_arg_elements[1].type = ACPI_TYPE_INTEGER; atrm_arg_elements[1].integer.value = len; status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer); if (ACPI_FAILURE(status)) { DRM_ERROR("failed to evaluate ATRM got %s\n", acpi_format_exception(status)); return -ENODEV; } obj = (union acpi_object *)buffer.pointer; memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length); len = obj->buffer.length; kfree(buffer.pointer); return len;} static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev){ int ret; int size = 256 * 1024; int i; struct pci_dev *pdev = NULL; acpi_handle dhandle, atrm_handle; acpi_status status; bool found = false; /* ATRM is for on-platform devices only */ if (dev_is_removable(&adev->pdev->dev)) return false; while ((pdev = pci_get_base_class(PCI_BASE_CLASS_DISPLAY, pdev))) { if ((pdev->class != PCI_CLASS_DISPLAY_VGA << 8) && (pdev->class != PCI_CLASS_DISPLAY_OTHER << 8)) continue; dhandle = ACPI_HANDLE(&pdev->dev); if (!dhandle) continue; status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); if (ACPI_SUCCESS(status)) { found = true; break; } } if (!found) return false; pci_dev_put(pdev); adev->bios = kmalloc(size, GFP_KERNEL); if (!adev->bios) { dev_err(adev->dev, "Unable to allocate bios\n"); return false; } for (i = 0; i < size / ATRM_BIOS_PAGE; i++) { ret = amdgpu_atrm_call(atrm_handle, adev->bios, (i * ATRM_BIOS_PAGE), ATRM_BIOS_PAGE); if (ret < ATRM_BIOS_PAGE) break; } if (!check_atom_bios(adev->bios, size)) { kfree(adev->bios); return false; } adev->bios_size = size; return true;}#elsestatic inline bool amdgpu_atrm_get_bios(struct amdgpu_device *adev){ return false;}#endif static bool amdgpu_read_disabled_bios(struct amdgpu_device *adev){ return (!adev->asic_funcs || !adev->asic_funcs->read_disabled_bios) ? false : amdgpu_asic_read_disabled_bios(adev);} #ifdef CONFIG_ACPIstatic bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev){ struct acpi_table_header *hdr; acpi_size tbl_size; UEFI_ACPI_VFCT *vfct; unsigned int offset; if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr))) return false; tbl_size = hdr->length; if (tbl_size < sizeof(UEFI_ACPI_VFCT)) { dev_info(adev->dev, "ACPI VFCT table present but broken (too short #1),skipping\n"); return false; } vfct = (UEFI_ACPI_VFCT *)hdr; offset = vfct->VBIOSImageOffset; while (offset < tbl_size) { GOP_VBIOS_CONTENT *vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + offset); VFCT_IMAGE_HEADER *vhdr = &vbios->VbiosHeader; offset += sizeof(VFCT_IMAGE_HEADER); if (offset > tbl_size) { dev_info(adev->dev, "ACPI VFCT image header truncated,skipping\n"); return false; } offset += vhdr->ImageLength; if (offset > tbl_size) { dev_info(adev->dev, "ACPI VFCT image truncated,skipping\n"); return false; } if (vhdr->ImageLength && vhdr->PCIBus == adev->pdev->bus->number && vhdr->PCIDevice == PCI_SLOT(adev->pdev->devfn) && vhdr->PCIFunction == PCI_FUNC(adev->pdev->devfn) && vhdr->VendorID == adev->pdev->vendor && vhdr->DeviceID == adev->pdev->device) { adev->bios = kmemdup(&vbios->VbiosContent, vhdr->ImageLength, GFP_KERNEL); if (!check_atom_bios(adev->bios, vhdr->ImageLength)) { kfree(adev->bios); return false; } adev->bios_size = vhdr->ImageLength; return true; } } dev_info(adev->dev, "ACPI VFCT table present but broken (too short #2),skipping\n"); return false;}#elsestatic inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev){ return false;}#endif static bool amdgpu_get_bios_apu(struct amdgpu_device *adev){ if (amdgpu_acpi_vfct_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from VFCT\n"); goto success; } if (amdgpu_read_bios_from_vram(adev)) { dev_info(adev->dev, "Fetched VBIOS from VRAM BAR\n"); goto success; } if (amdgpu_read_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from ROM BAR\n"); goto success; } if (amdgpu_read_platform_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from platform\n"); goto success; } dev_err(adev->dev, "Unable to locate a BIOS ROM\n"); return false; success: return true;} static bool amdgpu_get_bios_dgpu(struct amdgpu_device *adev){ if (amdgpu_atrm_get_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from ATRM\n"); goto success; } if (amdgpu_acpi_vfct_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from VFCT\n"); goto success; } /* this is required for SR-IOV */ if (amdgpu_read_bios_from_vram(adev)) { dev_info(adev->dev, "Fetched VBIOS from VRAM BAR\n"); goto success; } if (amdgpu_read_platform_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from platform\n"); goto success; } if (amdgpu_read_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from ROM BAR\n"); goto success; } if (amdgpu_read_bios_from_rom(adev)) { dev_info(adev->dev, "Fetched VBIOS from ROM\n"); goto success; } if (amdgpu_read_disabled_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from disabled ROM BAR\n"); goto success; } dev_err(adev->dev, "Unable to locate a BIOS ROM\n"); return false; success: return true;} bool amdgpu_get_bios(struct amdgpu_device *adev){ bool found; if (adev->flags & AMD_IS_APU) found = amdgpu_get_bios_apu(adev); else found = amdgpu_get_bios_dgpu(adev); if (found) adev->is_atom_fw = adev->asic_type >= CHIP_VEGA10; return found;} /* helper function for soc15 and onwards to read bios from rom */Lines 1–500 of 545. 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/* * Copyright 2008 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Dave Airlie * Alex Deucher * Jerome Glisse */ #include "amdgpu.h" #include "atom.h" #include <linux/device.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/acpi.h> /* * BIOS. */ #define AMD_VBIOS_SIGNATURE " 761295520" #define AMD_VBIOS_SIGNATURE_OFFSET 0x30 #define AMD_VBIOS_SIGNATURE_SIZE sizeof(AMD_VBIOS_SIGNATURE) #define AMD_VBIOS_SIGNATURE_END (AMD_VBIOS_SIGNATURE_OFFSET + AMD_VBIOS_SIGNATURE_SIZE) #define AMD_IS_VALID_VBIOS(p) ((p)[0] == 0x55 && (p)[1] == 0xAA) #define AMD_VBIOS_LENGTH(p) ((p)[2] << 9) /* Check if current bios is an ATOM BIOS. * Return true if it is ATOM BIOS. Otherwise, return false. */ static bool check_atom_bios(uint8_t *bios, size_t size) { uint16_t tmp, bios_header_start; if (!bios || size < 0x49) { DRM_INFO("vbios mem is null or mem size is wrong\n"); return false; } if (!AMD_IS_VALID_VBIOS(bios)) { DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]); return false; } bios_header_start = bios[0x48] | (bios[0x49] << 8); if (!bios_header_start) { DRM_INFO("Can't locate bios header\n"); return false; } tmp = bios_header_start + 4; if (size < tmp) { DRM_INFO("BIOS header is broken\n"); return false; } if (!memcmp(bios + tmp, "ATOM", 4) || !memcmp(bios + tmp, "MOTA", 4)) { DRM_DEBUG("ATOMBIOS detected\n"); return true; } return false; } /* If you boot an IGP board with a discrete card as the primary, * the IGP rom is not accessible via the rom bar as the IGP rom is * part of the system bios. On boot, the system bios puts a * copy of the igp rom at the start of vram if a discrete card is * present. * For SR-IOV, the vbios image is also put in VRAM in the VF. */ static bool amdgpu_read_bios_from_vram(struct amdgpu_device *adev) { uint8_t __iomem *bios; resource_size_t vram_base; resource_size_t size = 256 * 1024; /* ??? */ if (!(adev->flags & AMD_IS_APU)) if (amdgpu_device_need_post(adev)) return false; /* FB BAR not enabled */ if (pci_resource_len(adev->pdev, 0) == 0) return false; adev->bios = NULL; vram_base = pci_resource_start(adev->pdev, 0); bios = ioremap_wc(vram_base, size); if (!bios) return false; adev->bios = kmalloc(size, GFP_KERNEL); if (!adev->bios) { iounmap(bios); return false; } adev->bios_size = size; memcpy_fromio(adev->bios, bios, size); iounmap(bios); if (!check_atom_bios(adev->bios, size)) { kfree(adev->bios); return false; } return true; } bool amdgpu_read_bios(struct amdgpu_device *adev) { uint8_t __iomem *bios; size_t size; adev->bios = NULL; /* XXX: some cards may return 0 for rom size? ddx has a workaround */ bios = pci_map_rom(adev->pdev, &size); if (!bios) return false; adev->bios = kzalloc(size, GFP_KERNEL); if (adev->bios == NULL) { pci_unmap_rom(adev->pdev, bios); return false; } adev->bios_size = size; memcpy_fromio(adev->bios, bios, size); pci_unmap_rom(adev->pdev, bios); if (!check_atom_bios(adev->bios, size)) { kfree(adev->bios); return false; } return true; } static bool amdgpu_read_bios_from_rom(struct amdgpu_device *adev) { u8 header[AMD_VBIOS_SIGNATURE_END+1] = {0}; int len; if (!adev->asic_funcs || !adev->asic_funcs->read_bios_from_rom) return false; /* validate VBIOS signature */ if (amdgpu_asic_read_bios_from_rom(adev, &header[0], sizeof(header)) == false) return false; header[AMD_VBIOS_SIGNATURE_END] = 0; if ((!AMD_IS_VALID_VBIOS(header)) || memcmp((char *)&header[AMD_VBIOS_SIGNATURE_OFFSET], AMD_VBIOS_SIGNATURE, strlen(AMD_VBIOS_SIGNATURE)) != 0) return false; /* valid vbios, go on */ len = AMD_VBIOS_LENGTH(header); len = ALIGN(len, 4); adev->bios = kmalloc(len, GFP_KERNEL); if (!adev->bios) { DRM_ERROR("no memory to allocate for BIOS\n"); return false; } adev->bios_size = len; /* read complete BIOS */ amdgpu_asic_read_bios_from_rom(adev, adev->bios, len); if (!check_atom_bios(adev->bios, len)) { kfree(adev->bios); return false; } return true; } static bool amdgpu_read_platform_bios(struct amdgpu_device *adev) { phys_addr_t rom = adev->pdev->rom; size_t romlen = adev->pdev->romlen; void __iomem *bios; adev->bios = NULL; if (!rom || romlen == 0) return false; adev->bios = kzalloc(romlen, GFP_KERNEL); if (!adev->bios) return false; bios = ioremap(rom, romlen); if (!bios) goto free_bios; memcpy_fromio(adev->bios, bios, romlen); iounmap(bios); if (!check_atom_bios(adev->bios, romlen)) goto free_bios; adev->bios_size = romlen; return true; free_bios: kfree(adev->bios); return false; } #ifdef CONFIG_ACPI /* ATRM is used to get the BIOS on the discrete cards in * dual-gpu systems. */ /* retrieve the ROM in 4k blocks */ #define ATRM_BIOS_PAGE 4096 /** * amdgpu_atrm_call - fetch a chunk of the vbios * * @atrm_handle: acpi ATRM handle * @bios: vbios image pointer * @offset: offset of vbios image data to fetch * @len: length of vbios image data to fetch * * Executes ATRM to fetch a chunk of the discrete * vbios image on PX systems (all asics). * Returns the length of the buffer fetched. */ static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios, int offset, int len) { acpi_status status; union acpi_object atrm_arg_elements[2], *obj; struct acpi_object_list atrm_arg; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL}; atrm_arg.count = 2; atrm_arg.pointer = &atrm_arg_elements[0]; atrm_arg_elements[0].type = ACPI_TYPE_INTEGER; atrm_arg_elements[0].integer.value = offset; atrm_arg_elements[1].type = ACPI_TYPE_INTEGER; atrm_arg_elements[1].integer.value = len; status = acpi_evaluate_object(atrm_handle, NULL, &atrm_arg, &buffer); if (ACPI_FAILURE(status)) { DRM_ERROR("failed to evaluate ATRM got %s\n", acpi_format_exception(status)); return -ENODEV; } obj = (union acpi_object *)buffer.pointer; memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length); len = obj->buffer.length; kfree(buffer.pointer); return len; } static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev) { int ret; int size = 256 * 1024; int i; struct pci_dev *pdev = NULL; acpi_handle dhandle, atrm_handle; acpi_status status; bool found = false; /* ATRM is for on-platform devices only */ if (dev_is_removable(&adev->pdev->dev)) return false; while ((pdev = pci_get_base_class(PCI_BASE_CLASS_DISPLAY, pdev))) { if ((pdev->class != PCI_CLASS_DISPLAY_VGA << 8) && (pdev->class != PCI_CLASS_DISPLAY_OTHER << 8)) continue; dhandle = ACPI_HANDLE(&pdev->dev); if (!dhandle) continue; status = acpi_get_handle(dhandle, "ATRM", &atrm_handle); if (ACPI_SUCCESS(status)) { found = true; break; } } if (!found) return false; pci_dev_put(pdev); adev->bios = kmalloc(size, GFP_KERNEL); if (!adev->bios) { dev_err(adev->dev, "Unable to allocate bios\n"); return false; } for (i = 0; i < size / ATRM_BIOS_PAGE; i++) { ret = amdgpu_atrm_call(atrm_handle, adev->bios, (i * ATRM_BIOS_PAGE), ATRM_BIOS_PAGE); if (ret < ATRM_BIOS_PAGE) break; } if (!check_atom_bios(adev->bios, size)) { kfree(adev->bios); return false; } adev->bios_size = size; return true; } #else static inline bool amdgpu_atrm_get_bios(struct amdgpu_device *adev) { return false; } #endif static bool amdgpu_read_disabled_bios(struct amdgpu_device *adev) { return (!adev->asic_funcs || !adev->asic_funcs->read_disabled_bios) ? false : amdgpu_asic_read_disabled_bios(adev); } #ifdef CONFIG_ACPI static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) { struct acpi_table_header *hdr; acpi_size tbl_size; UEFI_ACPI_VFCT *vfct; unsigned int offset; if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr))) return false; tbl_size = hdr->length; if (tbl_size < sizeof(UEFI_ACPI_VFCT)) { dev_info(adev->dev, "ACPI VFCT table present but broken (too short #1),skipping\n"); return false; } vfct = (UEFI_ACPI_VFCT *)hdr; offset = vfct->VBIOSImageOffset; while (offset < tbl_size) { GOP_VBIOS_CONTENT *vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + offset); VFCT_IMAGE_HEADER *vhdr = &vbios->VbiosHeader; offset += sizeof(VFCT_IMAGE_HEADER); if (offset > tbl_size) { dev_info(adev->dev, "ACPI VFCT image header truncated,skipping\n"); return false; } offset += vhdr->ImageLength; if (offset > tbl_size) { dev_info(adev->dev, "ACPI VFCT image truncated,skipping\n"); return false; } if (vhdr->ImageLength && vhdr->PCIBus == adev->pdev->bus->number && vhdr->PCIDevice == PCI_SLOT(adev->pdev->devfn) && vhdr->PCIFunction == PCI_FUNC(adev->pdev->devfn) && vhdr->VendorID == adev->pdev->vendor && vhdr->DeviceID == adev->pdev->device) { adev->bios = kmemdup(&vbios->VbiosContent, vhdr->ImageLength, GFP_KERNEL); if (!check_atom_bios(adev->bios, vhdr->ImageLength)) { kfree(adev->bios); return false; } adev->bios_size = vhdr->ImageLength; return true; } } dev_info(adev->dev, "ACPI VFCT table present but broken (too short #2),skipping\n"); return false; } #else static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) { return false; } #endif static bool amdgpu_get_bios_apu(struct amdgpu_device *adev) { if (amdgpu_acpi_vfct_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from VFCT\n"); goto success; } if (amdgpu_read_bios_from_vram(adev)) { dev_info(adev->dev, "Fetched VBIOS from VRAM BAR\n"); goto success; } if (amdgpu_read_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from ROM BAR\n"); goto success; } if (amdgpu_read_platform_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from platform\n"); goto success; } dev_err(adev->dev, "Unable to locate a BIOS ROM\n"); return false; success: return true; } static bool amdgpu_get_bios_dgpu(struct amdgpu_device *adev) { if (amdgpu_atrm_get_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from ATRM\n"); goto success; } if (amdgpu_acpi_vfct_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from VFCT\n"); goto success; } /* this is required for SR-IOV */ if (amdgpu_read_bios_from_vram(adev)) { dev_info(adev->dev, "Fetched VBIOS from VRAM BAR\n"); goto success; } if (amdgpu_read_platform_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from platform\n"); goto success; } if (amdgpu_read_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from ROM BAR\n"); goto success; } if (amdgpu_read_bios_from_rom(adev)) { dev_info(adev->dev, "Fetched VBIOS from ROM\n"); goto success; } if (amdgpu_read_disabled_bios(adev)) { dev_info(adev->dev, "Fetched VBIOS from disabled ROM BAR\n"); goto success; } dev_err(adev->dev, "Unable to locate a BIOS ROM\n"); return false; success: return true; } bool amdgpu_get_bios(struct amdgpu_device *adev) { bool found; if (adev->flags & AMD_IS_APU) found = amdgpu_get_bios_apu(adev); else found = amdgpu_get_bios_dgpu(adev); if (found) adev->is_atom_fw = adev->asic_type >= CHIP_VEGA10; return found; } /* helper function for soc15 and onwards to read bios from rom */