36  * BIOS.
46 /* Check if current bios is an ATOM BIOS.
47  * Return true if it is ATOM BIOS. Otherwise, return false.
49 static bool check_atom_bios(uint8_t *bios, size_t size)  in check_atom_bios()  argument
53 	if (!bios || size < 0x49) {  in check_atom_bios()
58 	if (!AMD_IS_VALID_VBIOS(bios)) {  in check_atom_bios()
59 		DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]);  in check_atom_bios()
63 	bios_header_start = bios[0x48] | (bios[0x49] << 8);  in check_atom_bios()
65 		DRM_INFO("Can't locate bios header\n");  in check_atom_bios()
71 		DRM_INFO("BIOS header is broken\n");  in check_atom_bios()
75 	if (!memcmp(bios + tmp, "ATOM", 4) ||  in check_atom_bios()
76 	    !memcmp(bios + tmp, "MOTA", 4)) {  in check_atom_bios()
86  * part of the system bios.  On boot, the system bios puts a
92 	uint8_t __iomem *bios;  in igp_read_bios_from_vram()  local
104 	adev->bios = NULL;  in igp_read_bios_from_vram()
106 	bios = ioremap_wc(vram_base, size);  in igp_read_bios_from_vram()
107 	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()
140 	adev->bios = kzalloc(size, GFP_KERNEL);  in amdgpu_read_bios()
141 	if (adev->bios == NULL) {  in amdgpu_read_bios()
142 		pci_unmap_rom(adev->pdev, bios);  in amdgpu_read_bios()
146 	memcpy_fromio(adev->bios, bios, size);  in amdgpu_read_bios()
147 	pci_unmap_rom(adev->pdev, bios);  in amdgpu_read_bios()
149 	if (!check_atom_bios(adev->bios, size)) {  in amdgpu_read_bios()
150 		kfree(adev->bios);  in amdgpu_read_bios()
179 	adev->bios = kmalloc(len, GFP_KERNEL);  in amdgpu_read_bios_from_rom()
180 	if (!adev->bios) {  in amdgpu_read_bios_from_rom()
181 		DRM_ERROR("no memory to allocate for BIOS\n");  in amdgpu_read_bios_from_rom()
186 	/* read complete BIOS */  in amdgpu_read_bios_from_rom()
187 	amdgpu_asic_read_bios_from_rom(adev, adev->bios, len);  in amdgpu_read_bios_from_rom()
189 	if (!check_atom_bios(adev->bios, len)) {  in amdgpu_read_bios_from_rom()
190 		kfree(adev->bios);  in amdgpu_read_bios_from_rom()
201 	void __iomem *bios;  in amdgpu_read_platform_bios()  local
203 	adev->bios = NULL;  in amdgpu_read_platform_bios()
208 	adev->bios = kzalloc(romlen, GFP_KERNEL);  in amdgpu_read_platform_bios()
209 	if (!adev->bios)  in amdgpu_read_platform_bios()
212 	bios = ioremap(rom, romlen);  in amdgpu_read_platform_bios()
213 	if (!bios)  in amdgpu_read_platform_bios()
216 	memcpy_fromio(adev->bios, bios, romlen);  in amdgpu_read_platform_bios()
217 	iounmap(bios);  in amdgpu_read_platform_bios()
219 	if (!check_atom_bios(adev->bios, romlen))  in amdgpu_read_platform_bios()
226 	kfree(adev->bios);  in amdgpu_read_platform_bios()
231 /* ATRM is used to get the BIOS on the discrete cards in
240  * @bios: vbios image pointer
248 static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios,  in amdgpu_atrm_call()  argument
272 	memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);  in amdgpu_atrm_call()
321 	adev->bios = kmalloc(size, GFP_KERNEL);  in amdgpu_atrm_get_bios()
322 	if (!adev->bios) {  in amdgpu_atrm_get_bios()
323 		dev_err(adev->dev, "Unable to allocate bios\n");  in amdgpu_atrm_get_bios()
329 				       adev->bios,  in amdgpu_atrm_get_bios()
336 	if (!check_atom_bios(adev->bios, size)) {  in amdgpu_atrm_get_bios()
337 		kfree(adev->bios);  in amdgpu_atrm_get_bios()
400 			adev->bios = kmemdup(&vbios->VbiosContent,  in amdgpu_acpi_vfct_bios()
404 			if (!check_atom_bios(adev->bios, vhdr->ImageLength)) {  in amdgpu_acpi_vfct_bios()
405 				kfree(adev->bios);  in amdgpu_acpi_vfct_bios()
460 	dev_err(adev->dev, "Unable to locate a BIOS ROM\n");  in amdgpu_get_bios()
468 /* helper function for soc15 and onwards to read bios from rom */
470 				     u8 *bios, u32 length_bytes)  in amdgpu_soc15_read_bios_from_rom()  argument
478 	if (bios == NULL)  in amdgpu_soc15_read_bios_from_rom()
490 	dw_ptr = (u32 *)bios;  in amdgpu_soc15_read_bios_from_rom()