kernel: load cpu amd microcode update if loaded by the bootloader

we detect basically the cpu info before loading the microcode, to be able to detect the vendor, and avoid any update on hypervisor. I couldn't test because my cpu doesn't have any update available. Change-Id: I6aea830158423b3ee13b640be8a788fc9041e23c Reviewed-on: https://review.haiku-os.org/c/haiku/+/5859 Tested-by: Commit checker robot <[email protected]> Reviewed-by: Jérôme Duval <[email protected]>
2022-11-30 08:50:59 +00:00
parent 616edea7fb
commit fb69e06195
2 changed files with 179 additions and 13 deletions
@@ -123,6 +123,7 @@
 // AMD MSR registers
 #define MSR_F10H_HWCR						0xc0010015
 #define 	HWCR_TSCFREQSEL					(1 << 24)
+#define MSR_K8_UCODE_UPDATE				0xc0010020
 #define K8_MSR_IPM						0xc0010055
 #define MSR_F10H_PSTATEDEF(x)				(0xc0010064 + (x))
 #define 	PSTATEDEF_EN					(1ULL << 63)
@@ -594,6 +595,46 @@ struct intel_microcode_extended_signature {
 };


+// AMD Microcode structures
+
+struct amd_container_header {
+	uint32 magic;
+};
+
+
+struct amd_section_header {
+	uint32 type;
+	uint32 size;
+};
+
+
+struct amd_equiv_cpu_entry {
+	uint32 installed_cpu;
+	uint32 fixed_errata_mask;
+	uint32 fixed_errata_compare;
+	uint16 equiv_cpu;
+	uint16 res;
+};
+
+
+struct amd_microcode_header {
+	uint32 data_code;
+	uint32 patch_id;
+	uint16 mc_patch_data_id;
+	uint8 mc_patch_data_len;
+	uint8 init_flag;
+	uint32 mc_patch_data_checksum;
+	uint32 nb_dev_id;
+	uint32 sb_dev_id;
+	uint16 processor_rev_id;
+	uint8 nb_rev_id;
+	uint8 sb_rev_id;
+	uint8 bios_api_rev;
+	uint8 reserved1[3];
+	uint32 match_reg[8];
+};
+
+
 extern void (*gCpuIdleFunc)(void);