soc/intel/broadwell: Get rid of `cpu_is_ult`

It is only used in a single file, on two functions that already check
whether coreboot is running on a Haswell or a Broadwell processor.

Change-Id: I86e1061f722e6d6855190c2fd863d85fc24a1ee0
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46708
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/broadwell/Makefile.inc

@@ -19,8 +19,6 @@ bootblock-y += ../../../cpu/x86/early_reset.S
 
 ramstage-y += acpi.c
 ramstage-y += cpu.c
-ramstage-y += cpu_info.c
-smm-y += cpu_info.c
 ramstage-y += finalize.c
 ramstage-y += gma.c
 ramstage-y += memmap.c

src/soc/intel/broadwell/cpu_info.c

@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <arch/cpu.h>
-#include <soc/cpu.h>
-#include <soc/msr.h>
-#include <soc/systemagent.h>
-
-/* Dynamically determine if the part is ULT. */
-int cpu_is_ult(void)
-{
-	static int ult = -1;
-
-	if (ult < 0) {
-		u32 fm = cpu_family_model();
-		if (fm == BROADWELL_FAMILY_ULT || fm == HASWELL_FAMILY_ULT)
-			ult = 1;
-		else
-			ult = 0;
-	}
-
-	return ult;
-}

src/soc/intel/broadwell/gma.c

@@ -364,6 +364,7 @@ static int igd_get_cdclk_haswell(u32 *const cdsel, int *const inform_pc,
 
 	/* Check for ULX GT1 or GT2 */
 	const int devid = pci_read_config16(dev, PCI_DEVICE_ID);
+	const int cpu_is_ult = cpu_family_model() == HASWELL_FAMILY_ULT;
 	const int gpu_is_ulx = devid == IGD_HASWELL_ULX_GT1 ||
 				devid == IGD_HASWELL_ULX_GT2;
 
@@ -378,7 +379,7 @@ static int igd_get_cdclk_haswell(u32 *const cdsel, int *const inform_pc,
 	 */
 	if (gpu_is_ulx && cdclk <= GT_CDCLK_337)
 		cdclk = GT_CDCLK_337;
-	else if (gpu_is_ulx || cpu_is_ult() ||
+	else if (gpu_is_ulx || cpu_is_ult ||
 			cdclk == GT_CDCLK_337 || cdclk == GT_CDCLK_450)
 		cdclk = GT_CDCLK_450;
 	else
@@ -398,6 +399,7 @@ static int igd_get_cdclk_broadwell(u32 *const cdsel, int *const inform_pc,
 
 	/* Check for ULX */
 	const int devid = pci_read_config16(dev, PCI_DEVICE_ID);
+	const int cpu_is_ult = cpu_family_model() == BROADWELL_FAMILY_ULT;
 	const int gpu_is_ulx = devid == IGD_BROADWELL_Y_GT2;
 
 	/* Inform power controller of upcoming frequency change */
@@ -428,7 +430,7 @@ static int igd_get_cdclk_broadwell(u32 *const cdsel, int *const inform_pc,
 			(gpu_is_ulx && cdclk == GT_CDCLK_DEFAULT))
 		cdclk = GT_CDCLK_450;
 	else if (cdclk == GT_CDCLK_540 || gpu_is_ulx ||
-			(cpu_is_ult() && cdclk == GT_CDCLK_DEFAULT))
+			(cpu_is_ult && cdclk == GT_CDCLK_DEFAULT))
 		cdclk = GT_CDCLK_540;
 	else
 		cdclk = GT_CDCLK_675;

src/soc/intel/broadwell/include/soc/cpu.h

@@ -54,6 +54,4 @@ static inline u32 cpu_stepping(void)
 	return cpuid_eax(1) & 0xf;
 }
 
-int cpu_is_ult(void);
-
 #endif