soc/intel/alderlake: Inform user during CSE update

If a CSE update is going to happen and early graphics is supported by
the mainboard, an on-screen text message is displayed to inform the
end user.

CSE update can take a while and an impatient end user facing a black
screen for a while may reset the device unnecessarily.

BUG=b:264648959
BRANCH=firmware-brya-14505.B
TEST=On screen text message during CSE update observed on skolas

Change-Id: I28c4fef9345d577be287b76a2a767b5c852ec742
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72098
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-by: Bora Guvendik <bora.guvendik@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/alderlake/romstage/Makefile.inc

@@ -5,3 +5,4 @@ romstage-y += ../../../../cpu/intel/car/romstage.c
 romstage-y += romstage.c
 romstage-y += systemagent.c
 romstage-$(CONFIG_EARLY_GFX_GMA) += graphics.c
+romstage-y += ux.c

src/soc/intel/alderlake/romstage/fsp_params.c

@@ -11,10 +11,8 @@
 #include <gpio.h>
 #include <intelbasecode/debug_feature.h>
 #include <intelblocks/cpulib.h>
-#include <intelblocks/early_graphics.h>
 #include <intelblocks/pcie_rp.h>
 #include <option.h>
-#include <pc80/vga.h>
 #include <soc/iomap.h>
 #include <soc/msr.h>
 #include <soc/pci_devs.h>
@@ -23,6 +21,8 @@
 #include <soc/soc_chip.h>
 #include <string.h>
 
+#include "ux.h"
+
 #define FSP_CLK_NOTUSED			0xFF
 #define FSP_CLK_LAN			0x70
 #define FSP_CLK_FREE_RUNNING		0x80
@@ -363,17 +363,6 @@ static void fill_fspm_ibecc_params(FSP_M_CONFIG *m_cfg,
 	}
 }
 
-static void inform_user_of_memory_training(void)
-{
-	if (!CONFIG(MAINBOARD_HAS_EARLY_LIBGFXINIT) ||
-	    !early_graphics_init())
-		return;
-
-	printk(BIOS_INFO, "Informing user on-display of memory training.\n");
-	vga_write_text(VGA_TEXT_CENTER, VGA_TEXT_HORIZONTAL_MIDDLE,
-		       "Your device is finishing an update. This may take 1-2 minutes.\nPlease do not turn off your device.");
-}
-
 static void soc_memory_init_params(FSP_M_CONFIG *m_cfg,
 		const struct soc_intel_alderlake_config *config)
 {
@@ -435,7 +424,7 @@ void platform_fsp_memory_init_params_cb(FSPM_UPD *mupd, uint32_t version)
 	 * user with an on-screen text message.
 	 */
 	if (!arch_upd->NvsBufferPtr)
-		inform_user_of_memory_training();
+		ux_inform_user_of_update_operation("memory training");
 
 	config = config_of_soc();
 

src/soc/intel/alderlake/romstage/romstage.c

@@ -22,6 +22,8 @@
 #include <string.h>
 #include <security/intel/txt/txt.h>
 
+#include "ux.h"
+
 #define FSP_SMBIOS_MEMORY_INFO_GUID	\
 {	\
 	0xd4, 0x71, 0x20, 0x9b, 0x54, 0xb0, 0x0c, 0x4e,	\
@@ -126,6 +128,16 @@ static void save_dimm_info(void)
 	printk(BIOS_DEBUG, "%d DIMMs found\n", mem_info->dimm_cnt);
 }
 
+void cse_fw_update_misc_oper(void)
+{
+	ux_inform_user_of_update_operation("CSE update");
+}
+
+void cse_board_reset(void)
+{
+	early_graphics_stop();
+}
+
 void mainboard_romstage_entry(void)
 {
 	struct chipset_power_state *ps = pmc_get_power_state();
@@ -137,6 +149,15 @@ void mainboard_romstage_entry(void)
 	if (CONFIG(SOC_INTEL_COMMON_BASECODE_DEBUG_FEATURE))
 		dbg_feature_cntrl_init();
 
+	/*
+	 * Disable Intel TXT if `CPU is unsupported` or `SoC haven't selected the config`.
+	 *
+	 * It would help to access VGA framebuffer prior calling into CSE
+	 * firmware update or FSP-M.
+	 */
+	if (!CONFIG(INTEL_TXT))
+		disable_intel_txt();
+
 	if (CONFIG(SOC_INTEL_CSE_LITE_SYNC_IN_ROMSTAGE) && !s3wake) {
 		timestamp_add_now(TS_CSE_FW_SYNC_START);
 		cse_fw_sync();
@@ -148,13 +169,6 @@ void mainboard_romstage_entry(void)
 	/* Program SMBus base address and enable it */
 	smbus_common_init();
 
-	/*
-	 * Disable Intel TXT if `CPU is unsupported` or `SoC haven't selected the config`.
-	 *
-	 * It would help to access VGA framebuffer prior calling into FSP-M.
-	 */
-	if (!CONFIG(INTEL_TXT))
-		disable_intel_txt();
 
 	/* Update coreboot timestamp table with CSE timestamps */
 	if (CONFIG(SOC_INTEL_CSE_PRE_CPU_RESET_TELEMETRY))

src/soc/intel/alderlake/romstage/ux.c

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <intelblocks/early_graphics.h>
+#include <pc80/vga.h>
+
+#include "ux.h"
+
+void ux_inform_user_of_update_operation(const char *name)
+{
+	if (!CONFIG(MAINBOARD_HAS_EARLY_LIBGFXINIT) ||
+	    !early_graphics_init())
+		return;
+
+	printk(BIOS_INFO, "Informing user on-display of %s.\n", name);
+	vga_write_text(VGA_TEXT_CENTER, VGA_TEXT_HORIZONTAL_MIDDLE,
+		       "Your device is finishing an update. This may take 1-2 minutes.\nPlease do not turn off your device.");
+}

src/soc/intel/alderlake/romstage/ux.h

@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+void ux_inform_user_of_update_operation(const char *name);