C++ (Cpp) radeon_read_disabled_biosの例

コード例 #1

ファイル: radeon_bios.c プロジェクト: Eudemony/note4_kernel_test

bool radeon_get_bios(struct radeon_device *rdev)
{
	bool r;
	uint16_t tmp;

	r = radeon_atrm_get_bios(rdev);
	if (r == false)
		r = radeon_acpi_vfct_bios(rdev);
	if (r == false)
		r = igp_read_bios_from_vram(rdev);
	if (r == false)
		r = radeon_read_bios(rdev);
	if (r == false) {
		r = radeon_read_disabled_bios(rdev);
	}
	if (r == false) {
		r = radeon_read_platform_bios(rdev);
	}
	if (r == false || rdev->bios == NULL) {
		DRM_ERROR("Unable to locate a BIOS ROM\n");
		rdev->bios = NULL;
		return false;
	}
	if (rdev->bios[0] != 0x55 || rdev->bios[1] != 0xaa) {
		printk("BIOS signature incorrect %x %x\n", rdev->bios[0], rdev->bios[1]);
		goto free_bios;
	}

	tmp = RBIOS16(0x18);
	if (RBIOS8(tmp + 0x14) != 0x0) {
		DRM_INFO("Not an x86 BIOS ROM, not using.\n");
		goto free_bios;
	}

	rdev->bios_header_start = RBIOS16(0x48);
	if (!rdev->bios_header_start) {
		goto free_bios;
	}
	tmp = rdev->bios_header_start + 4;
	if (!memcmp(rdev->bios + tmp, "ATOM", 4) ||
	    !memcmp(rdev->bios + tmp, "MOTA", 4)) {
		rdev->is_atom_bios = true;
	} else {
		rdev->is_atom_bios = false;
	}

	DRM_DEBUG("%sBIOS detected\n", rdev->is_atom_bios ? "ATOM" : "COM");
	return true;
free_bios:
	kfree(rdev->bios);
	rdev->bios = NULL;
	return false;
}

コード例 #2

ファイル: radeon_bios.c プロジェクト: laudarch/simcom-linux-kernel

bool radeon_get_bios(struct radeon_device *rdev)
{
	bool r;
	uint16_t tmp;

	if (rdev->flags & RADEON_IS_IGP) {
		r = igp_read_bios_from_vram(rdev);
		if (r == false)
			r = radeon_read_bios(rdev);
	} else
		r = radeon_read_bios(rdev);
	if (r == false) {
		r = radeon_read_disabled_bios(rdev);
	}
	if (r == false || rdev->bios == NULL) {
		DRM_ERROR("Unable to locate a BIOS ROM\n");
		rdev->bios = NULL;
		return false;
	}
	if (rdev->bios[0] != 0x55 || rdev->bios[1] != 0xaa) {
		goto free_bios;
	}

	rdev->bios_header_start = RBIOS16(0x48);
	if (!rdev->bios_header_start) {
		goto free_bios;
	}
	tmp = rdev->bios_header_start + 4;
	if (!memcmp(rdev->bios + tmp, "ATOM", 4) ||
	    !memcmp(rdev->bios + tmp, "MOTA", 4)) {
		rdev->is_atom_bios = true;
	} else {
		rdev->is_atom_bios = false;
	}

	DRM_DEBUG("%sBIOS detected\n", rdev->is_atom_bios ? "ATOM" : "COM");
	return true;
free_bios:
	kfree(rdev->bios);
	rdev->bios = NULL;
	return false;
}