ESXi Linux VM Amdgpu bios not found hack

amdgpu_bios.patch

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
index 50dff69a0f6e..76b66284f631 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
@@ -29,6 +29,7 @@
 #include "amdgpu.h"
 #include "atom.h"
 
+#include <linux/firmware.h>
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/acpi.h>
@@ -121,6 +122,45 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev)
 	return true;
 }
 
+static bool amdgpu_read_bios_from_firmware(struct amdgpu_device *adev)
+{
+	const uint8_t __iomem *bios;
+	resource_size_t size;
+	const struct firmware *fw = NULL;
+	char *err = NULL;
+
+	request_firmware(&fw, "amdgpu/vbios.bin", adev->dev);
+	if (!fw) {
+		err = "firmware request returned NULL\n";
+		goto out;
+	}
+	size = fw->size;
+	bios = fw->data;
+
+	if (size == 0 || !bios) {
+		err = "firmware request returned zero sized or NULL data\n";
+		goto out;
+	}
+
+	if (bios[0] != 0x55 || bios[1] != 0xaa) {
+		err = "wrong signature on firmware\n";
+		goto out;
+	}
+	adev->bios = kmalloc(size, GFP_KERNEL);
+	if (adev->bios == NULL) {
+		err = "failed to kmalloc() memory for firmware\n";
+		goto out;
+	}
+	memcpy(adev->bios, bios, size);
+out:
+	if (err)
+		DRM_ERROR(err);
+	if (fw)
+		release_firmware(fw);
+	return !err;
+}
+
+
 bool amdgpu_read_bios(struct amdgpu_device *adev)
 {
 	uint8_t __iomem *bios;
@@ -433,6 +473,9 @@ bool amdgpu_get_bios(struct amdgpu_device *adev)
 	if (amdgpu_read_platform_bios(adev))
 		goto success;
 
+	if (amdgpu_read_bios_from_firmware(adev))
+		goto success;
+
 	DRM_ERROR("Unable to locate a BIOS ROM\n");
 	return false;