amdgpu: detect if we are using atomfirmware or atombios for vbios (v2) (0cdd5005) · Commits · 戴 / test

drivers/gpu/drm/amd/amdgpu/amdgpu.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -1308,6 +1308,7 @@ struct amdgpu_device {
		bool have_disp_power_ref;

		/* BIOS */
		bool is_atom_fw;
		uint8_t *bios;
		uint32_t bios_size;
		struct amdgpu_bo *stollen_vga_memory;

+23 −7

Original line number	Diff line number	Diff line
		@@ -86,6 +86,18 @@ static bool check_atom_bios(uint8_t *bios, size_t size)
		return false;
		}

		static bool is_atom_fw(uint8_t *bios)
		{
		uint16_t bios_header_start = bios[0x48] \| (bios[0x49] << 8);
		uint8_t frev = bios[bios_header_start + 2];
		uint8_t crev = bios[bios_header_start + 3];

		if ((frev < 3) \|\|
		((frev == 3) && (crev < 3)))
		return false;

		return true;
		}

		/* 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
		@@ -419,26 +431,30 @@ static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev)
		bool amdgpu_get_bios(struct amdgpu_device *adev)
		{
		if (amdgpu_atrm_get_bios(adev))
		return true;
		goto success;

		if (amdgpu_acpi_vfct_bios(adev))
		return true;
		goto success;

		if (igp_read_bios_from_vram(adev))
		return true;
		goto success;

		if (amdgpu_read_bios(adev))
		return true;
		goto success;

		if (amdgpu_read_bios_from_rom(adev))
		return true;
		goto success;

		if (amdgpu_read_disabled_bios(adev))
		return true;
		goto success;

		if (amdgpu_read_platform_bios(adev))
		return true;
		goto success;

		DRM_ERROR("Unable to locate a BIOS ROM\n");
		return false;

		success:
		adev->is_atom_fw = is_atom_fw(adev->bios);
		return true;
		}