37  * BIOS.
47 /* Check if current bios is an ATOM BIOS.
48  * Return true if it is ATOM BIOS. Otherwise, return false.
50 static bool check_atom_bios(uint8_t *bios, size_t size)  in check_atom_bios()  argument
54 	if (!bios || size < 0x49) {  in check_atom_bios()
59 	if (!AMD_IS_VALID_VBIOS(bios)) {  in check_atom_bios()
60 		DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]);  in check_atom_bios()
64 	bios_header_start = bios[0x48] | (bios[0x49] << 8);  in check_atom_bios()
66 		DRM_INFO("Can't locate bios header\n");  in check_atom_bios()
72 		DRM_INFO("BIOS header is broken\n");  in check_atom_bios()
76 	if (!memcmp(bios + tmp, "ATOM", 4) ||  in check_atom_bios()
77 	    !memcmp(bios + tmp, "MOTA", 4)) {  in check_atom_bios()
87  * part of the system bios.  On boot, the system bios puts a
93 	uint8_t __iomem *bios;  in igp_read_bios_from_vram()  local
105 	adev->bios = NULL;  in igp_read_bios_from_vram()
107 	bios = ioremap_wc(vram_base, size);  in igp_read_bios_from_vram()
108 	if (!bios)  in igp_read_bios_from_vram()
111 	adev->bios = kmalloc(size, GFP_KERNEL);  in igp_read_bios_from_vram()
112 	if (!adev->bios) {  in igp_read_bios_from_vram()
113 		iounmap(bios);  in igp_read_bios_from_vram()
117 	memcpy_fromio(adev->bios, bios, size);  in igp_read_bios_from_vram()
118 	iounmap(bios);  in igp_read_bios_from_vram()
120 	if (!check_atom_bios(adev->bios, size)) {  in igp_read_bios_from_vram()
121 		kfree(adev->bios);  in igp_read_bios_from_vram()
130 	uint8_t __iomem *bios;  in amdgpu_read_bios()  local
133 	adev->bios = NULL;  in amdgpu_read_bios()
135 	bios = pci_map_rom(adev->pdev, &size);  in amdgpu_read_bios()
136 	if (!bios)  in amdgpu_read_bios()
139 	adev->bios = kzalloc(size, GFP_KERNEL);  in amdgpu_read_bios()
140 	if (adev->bios == NULL) {  in amdgpu_read_bios()
141 		pci_unmap_rom(adev->pdev, bios);  in amdgpu_read_bios()
145 	memcpy_fromio(adev->bios, bios, size);  in amdgpu_read_bios()
146 	pci_unmap_rom(adev->pdev, bios);  in amdgpu_read_bios()
148 	if (!check_atom_bios(adev->bios, size)) {  in amdgpu_read_bios()
149 		kfree(adev->bios);  in amdgpu_read_bios()
178 	adev->bios = kmalloc(len, GFP_KERNEL);  in amdgpu_read_bios_from_rom()
179 	if (!adev->bios) {  in amdgpu_read_bios_from_rom()
180 		DRM_ERROR("no memory to allocate for BIOS\n");  in amdgpu_read_bios_from_rom()
185 	/* read complete BIOS */  in amdgpu_read_bios_from_rom()
186 	amdgpu_asic_read_bios_from_rom(adev, adev->bios, len);  in amdgpu_read_bios_from_rom()
188 	if (!check_atom_bios(adev->bios, len)) {  in amdgpu_read_bios_from_rom()
189 		kfree(adev->bios);  in amdgpu_read_bios_from_rom()
200 	void __iomem *bios;  in amdgpu_read_platform_bios()  local
202 	adev->bios = NULL;  in amdgpu_read_platform_bios()
207 	adev->bios = kzalloc(romlen, GFP_KERNEL);  in amdgpu_read_platform_bios()
208 	if (!adev->bios)  in amdgpu_read_platform_bios()
211 	bios = ioremap(rom, romlen);  in amdgpu_read_platform_bios()
212 	if (!bios)  in amdgpu_read_platform_bios()
215 	memcpy_fromio(adev->bios, bios, romlen);  in amdgpu_read_platform_bios()
216 	iounmap(bios);  in amdgpu_read_platform_bios()
218 	if (!check_atom_bios(adev->bios, romlen))  in amdgpu_read_platform_bios()
225 	kfree(adev->bios);  in amdgpu_read_platform_bios()
230 /* ATRM is used to get the BIOS on the discrete cards in
239  * @bios: vbios image pointer
247 static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios,  in amdgpu_atrm_call()  argument
271 	memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);  in amdgpu_atrm_call()
325 	adev->bios = kmalloc(size, GFP_KERNEL);  in amdgpu_atrm_get_bios()
326 	if (!adev->bios) {  in amdgpu_atrm_get_bios()
327 		dev_err(adev->dev, "Unable to allocate bios\n");  in amdgpu_atrm_get_bios()
333 				       adev->bios,  in amdgpu_atrm_get_bios()
340 	if (!check_atom_bios(adev->bios, size)) {  in amdgpu_atrm_get_bios()
341 		kfree(adev->bios);  in amdgpu_atrm_get_bios()
404 			adev->bios = kmemdup(&vbios->VbiosContent,  in amdgpu_acpi_vfct_bios()
408 			if (!check_atom_bios(adev->bios, vhdr->ImageLength)) {  in amdgpu_acpi_vfct_bios()
409 				kfree(adev->bios);  in amdgpu_acpi_vfct_bios()
464 	dev_err(adev->dev, "Unable to locate a BIOS ROM\n");  in amdgpu_get_bios()
472 /* helper function for soc15 and onwards to read bios from rom */
474 				     u8 *bios, u32 length_bytes)  in amdgpu_soc15_read_bios_from_rom()  argument
482 	if (bios == NULL)  in amdgpu_soc15_read_bios_from_rom()
494 	dw_ptr = (u32 *)bios;  in amdgpu_soc15_read_bios_from_rom()