amd/amdgpu/amdgpu_bios.c

47 /* Check if current bios is an ATOM BIOS.
50 static bool check_atom_bios(uint8_t *bios, size_t size)
54 	if (!bios || size < 0x49) {
59 	if (!AMD_IS_VALID_VBIOS(bios)) {
60 		DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]);
64 	bios_header_start = bios[0x48] | (bios[0x49] << 8);
66 		DRM_INFO("Can't locate bios header\n");
76 	if (!memcmp(bios + tmp, "ATOM", 4) ||
77 	    !memcmp(bios + tmp, "MOTA", 4)) {
87  * part of the system bios.  On boot, the system bios puts a
93 	uint8_t __iomem *bios;
105 	adev->bios = NULL;
107 	bios = ioremap_wc(vram_base, size);
108 	if (!bios)
111 	adev->bios = kmalloc(size, GFP_KERNEL);
112 	if (!adev->bios) {
113 		iounmap(bios);
117 	memcpy_fromio(adev->bios, bios, size);
118 	iounmap(bios);
120 	if (!check_atom_bios(adev->bios, size)) {
121 		kfree(adev->bios);
130 	uint8_t __iomem *bios;
133 	adev->bios = NULL;
135 	bios = pci_map_rom(adev->pdev, &size);
136 	if (!bios)
139 	adev->bios = kzalloc(size, GFP_KERNEL);
140 	if (adev->bios == NULL) {
141 		pci_unmap_rom(adev->pdev, bios);
145 	memcpy_fromio(adev->bios, bios, size);
146 	pci_unmap_rom(adev->pdev, bios);
148 	if (!check_atom_bios(adev->bios, size)) {
149 		kfree(adev->bios);
178 	adev->bios = kmalloc(len, GFP_KERNEL);
179 	if (!adev->bios) {
186 	amdgpu_asic_read_bios_from_rom(adev, adev->bios, len);
188 	if (!check_atom_bios(adev->bios, len)) {
189 		kfree(adev->bios);
200 	void __iomem *bios;
202 	adev->bios = NULL;
207 	adev->bios = kzalloc(romlen, GFP_KERNEL);
208 	if (!adev->bios)
211 	bios = ioremap(rom, romlen);
212 	if (!bios)
215 	memcpy_fromio(adev->bios, bios, romlen);
216 	iounmap(bios);
218 	if (!check_atom_bios(adev->bios, romlen))
225 	kfree(adev->bios);
239  * @bios: vbios image pointer
247 static int amdgpu_atrm_call(acpi_handle atrm_handle, uint8_t *bios,
271 	memcpy(bios+offset, obj->buffer.pointer, obj->buffer.length);
315 	adev->bios = kmalloc(size, GFP_KERNEL);
316 	if (!adev->bios) {
317 		dev_err(adev->dev, "Unable to allocate bios\n");
323 				       adev->bios,
330 	if (!check_atom_bios(adev->bios, size)) {
331 		kfree(adev->bios);
394 			adev->bios = kmemdup(&vbios->VbiosContent,
398 			if (!check_atom_bios(adev->bios, vhdr->ImageLength)) {
399 				kfree(adev->bios);
462 /* helper function for soc15 and onwards to read bios from rom */
464 				     u8 *bios, u32 length_bytes)
472 	if (bios == NULL)
484 	dw_ptr = (u32 *)bios;