A patch to allow loading radeon graphics adapter bios from /lib/firmware/radeon/vbios.bin

radeon_bios.c

/*
This is a simple patch that will allow Radeon graphics adapters to function in Linux VMs running under ESXi
File is located in drivers/gpu/drm/radeon/radeon_bios.c
*/

//* Add this line after other includes
#include <linux/firmware.h>

//* Add this function to file
static bool radeon_read_bios_from_firmware(struct radeon_device *rdev)
{
	const uint8_t __iomem *bios;
	resource_size_t size;
	const struct firmware *fw = NULL;

	request_firmware(&fw, "radeon/vbios.bin", rdev->dev);
	if (!fw) {
		DRM_ERROR("No bios\n");
		return false;
	}
	size = fw->size;
	bios = fw->data;

	if (!bios) {
		DRM_ERROR("No bios\n");
		return false;
	}

	if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) {
		DRM_ERROR("wrong sig\n");
		release_firmware(fw);
		return false;
	}
	rdev->bios = kmalloc(size, GFP_KERNEL);
	if (rdev->bios == NULL) {
		DRM_ERROR("alloc fail\n");
		release_firmware(fw);
		return false;
	}
	memcpy(rdev->bios, bios, size);
	release_firmware(fw);
	return true;
}

/* 
Add the call to function after this line
    r = radeon_read_platform_bios(rdev);  
*/
		if (r == false)
			r = radeon_read_bios_from_firmware(rdev);