soc/intel/*: Get rid of custom microcode caching

Get rid of custom microcode caching in MPinit and SGX code and
use the caching introduced in intel_microcode_find() instead.

Change-Id: If3ccd4dcff221c88839ffeafa812f4c38cede63f
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49897
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/cpu/intel/model_1067x/mp_init.c

@@ -9,11 +9,10 @@
 #include <device/device.h>
 
 /* Parallel MP initialization support. */
-static const void *microcode_patch;
-
 static void pre_mp_init(void)
 {
-	intel_microcode_load_unlocked(microcode_patch);
+	const void *patch = intel_microcode_find();
+	intel_microcode_load_unlocked(patch);
 
 	/* Setup MTRRs based on physical address size. */
 	x86_setup_mtrrs_with_detect();
@@ -32,7 +31,7 @@ static int get_cpu_count(void)
 
 static void get_microcode_info(const void **microcode, int *parallel)
 {
-	*microcode = microcode_patch;
+	*microcode = intel_microcode_find();
 	*parallel = !intel_ht_supported();
 }
 
@@ -98,8 +97,6 @@ static const struct mp_ops mp_ops = {
 
 void mp_init_cpus(struct bus *cpu_bus)
 {
-	microcode_patch = intel_microcode_find();
-
 	if (mp_init_with_smm(cpu_bus, &mp_ops))
 		printk(BIOS_ERR, "MP initialization failure.\n");
 }

src/cpu/intel/model_2065x/model_2065x_init.c

@@ -123,8 +123,6 @@ static void model_2065x_init(struct device *cpu)
 }
 
 /* MP initialization support. */
-static const void *microcode_patch;
-
 static void pre_mp_init(void)
 {
 	/* Setup MTRRs based on physical address size. */
@@ -149,8 +147,7 @@ static int get_cpu_count(void)
 
 static void get_microcode_info(const void **microcode, int *parallel)
 {
-	microcode_patch = intel_microcode_find();
-	*microcode = microcode_patch;
+	*microcode = intel_microcode_find();
 	*parallel = !intel_ht_supported();
 }
 
@@ -160,6 +157,7 @@ static void per_cpu_smm_trigger(void)
 	smm_relocate();
 
 	/* After SMM relocation a 2nd microcode load is required. */
+	const void *microcode_patch = intel_microcode_find();
 	intel_microcode_load_unlocked(microcode_patch);
 }
 

src/cpu/intel/model_206ax/model_206ax_init.c

@@ -466,8 +466,6 @@ static void model_206ax_init(struct device *cpu)
 }
 
 /* MP initialization support. */
-static const void *microcode_patch;
-
 static void pre_mp_init(void)
 {
 	/* Setup MTRRs based on physical address size. */
@@ -492,8 +490,7 @@ static int get_cpu_count(void)
 
 static void get_microcode_info(const void **microcode, int *parallel)
 {
-	microcode_patch = intel_microcode_find();
-	*microcode = microcode_patch;
+	*microcode = intel_microcode_find();
 	*parallel = !intel_ht_supported();
 }
 
@@ -503,6 +500,7 @@ static void per_cpu_smm_trigger(void)
 	smm_relocate();
 
 	/* After SMM relocation a 2nd microcode load is required. */
+	const void *microcode_patch = intel_microcode_find();
 	intel_microcode_load_unlocked(microcode_patch);
 }
 

src/soc/intel/common/block/cpu/mp_init.c

@@ -15,8 +15,6 @@
 #include <intelblocks/msr.h>
 #include <soc/cpu.h>
 
-static const void *microcode_patch;
-
 /* SoC override function */
 __weak void soc_core_init(struct device *dev)
 {
@@ -31,6 +29,8 @@ __weak void soc_init_cpus(struct bus *cpu_bus)
 static void init_one_cpu(struct device *dev)
 {
 	soc_core_init(dev);
+
+	const void *microcode_patch = intel_microcode_find();
 	intel_microcode_load_unlocked(microcode_patch);
 }
 
@@ -104,17 +104,6 @@ int get_cpu_count(void)
 	return num_virt_cores;
 }
 
-/*
- * Function to get the microcode patch pointer. Use this function to avoid
- * reading the microcode patch from the boot media. init_cpus() would
- * initialize microcode_patch global variable to point to microcode patch
- * in boot media and this function can be used to access the pointer.
- */
-const void *intel_mp_current_microcode(void)
-{
-	return microcode_patch;
-}
-
 /*
  * MP Init callback function(get_microcode_info) to find the Microcode at
  * Pre MP Init phase. This function is common among all SOCs and thus its in
@@ -125,7 +114,7 @@ const void *intel_mp_current_microcode(void)
  */
 void get_microcode_info(const void **microcode, int *parallel)
 {
-	*microcode = intel_mp_current_microcode();
+	*microcode = intel_microcode_find();
 	*parallel = 1;
 }
 
@@ -151,7 +140,7 @@ static void coreboot_init_cpus(void *unused)
 	if (CONFIG(USE_INTEL_FSP_MP_INIT))
 		return;
 
-	microcode_patch = intel_microcode_find();
+	const void *microcode_patch = intel_microcode_find();
 	intel_microcode_load_unlocked(microcode_patch);
 
 	init_cpus();

src/soc/intel/common/block/include/intelblocks/mp_init.h

@@ -53,14 +53,6 @@
  */
 int get_cpu_count(void);
 
-/*
- * Function to get the microcode patch pointer. Use this function to avoid
- * reading the microcode patch from the boot media. init_cpus() would
- * initialize microcode_patch global variable to point to microcode patch
- * in boot media and this function can be used to access the pointer.
- */
-const void *intel_mp_current_microcode(void);
-
 /*
  * MP Init callback function(get_microcode_info) to find the Microcode at
  * Pre MP Init phase. This function is common among all SOCs and thus its in

src/soc/intel/common/block/sgx/sgx.c

@@ -224,7 +224,7 @@ void sgx_configure(void *unused)
 	 * loads and to prevent simultaneous load attempts to the same core.
 	 */
 	if (!intel_ht_sibling()) {
-		const void *microcode_patch = intel_mp_current_microcode();
+		const void *microcode_patch = intel_microcode_find();
 		intel_microcode_load_unlocked(microcode_patch);
 	}
 

src/soc/intel/xeon_sp/cpx/cpu.c

@@ -58,15 +58,10 @@ static void xeon_configure_mca(void)
  */
 void get_microcode_info(const void **microcode, int *parallel)
 {
-	*microcode = intel_mp_current_microcode();
+	*microcode = intel_microcode_find();
 	*parallel = 0;
 }
 
-const void *intel_mp_current_microcode(void)
-{
-	return microcode_patch;
-}
-
 static void each_cpu_init(struct device *cpu)
 {
 	msr_t msr;