From: Hawking Zhang <Hawking.Zhang@amd.com>
Date: Mon, 22 Nov 2021 13:19:06 +0000 (+0800)
Subject: drm/amdgpu: add helper to verify ip discovery binary signature
X-Git-Tag: v5.17-rc1~173^2~8^2~49
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=32f0e1a3307f1372824dcf28b90fdab5aa11b54f;p=thirdparty%2Flinux.git

drm/amdgpu: add helper to verify ip discovery binary signature

To be used to check ip discovery binary signature

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
index 9ca5f5bac1a67..2ff502a81e873 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
@@ -235,6 +235,14 @@ static inline bool amdgpu_discovery_verify_checksum(uint8_t *data, uint32_t size
 	return !!(amdgpu_discovery_calculate_checksum(data, size) == expected);
 }
 
+static inline bool amdgpu_discovery_verify_binary_signature(uint8_t *binary)
+{
+	struct binary_header *bhdr;
+	bhdr = (struct binary_header *)binary;
+
+	return (le32_to_cpu(bhdr->binary_signature) == BINARY_SIGNATURE);
+}
+
 static int amdgpu_discovery_init(struct amdgpu_device *adev)
 {
 	struct table_info *info;