drivers/intel/fsp1.1: Simplify bootflow and clean up

This gets rid of the boilerplate back and forward calls between the
SOC/FSP-driver code and mainboard code.

Change-Id: I5d4a10d1da6b3ac5e65efd7f82607b56b80e08d4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32961
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/drivers/intel/fsp1_1/include/fsp/romstage.h

@@ -44,15 +44,13 @@ struct romstage_params {
 
 void mainboard_memory_init_params(struct romstage_params *params,
 	MEMORY_INIT_UPD *memory_params);
-void mainboard_romstage_entry(struct romstage_params *params);
+void mainboard_pre_raminit(struct romstage_params *params);
 void mainboard_save_dimm_info(struct romstage_params *params);
 void mainboard_add_dimm_info(struct romstage_params *params,
 			     struct memory_info *mem_info,
 			     int channel, int dimm, int index);
 void raminit(struct romstage_params *params);
 void report_memory_config(void);
-void romstage_common(struct romstage_params *params);
-asmlinkage void romstage_main(FSP_INFO_HEADER *fih);
 /* Initialize memory margin analysis settings. */
 void setup_mma(MEMORY_INIT_UPD *memory_upd);
 void soc_after_ram_init(struct romstage_params *params);

src/drivers/intel/fsp1_1/romstage.c

@@ -37,48 +37,7 @@
 #include <timestamp.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 
-asmlinkage void romstage_main(FSP_INFO_HEADER *fih)
-{
-	struct romstage_params params = {
-		.chipset_context = fih,
-	};
-
-	post_code(0x30);
-
-	timestamp_add_now(TS_START_ROMSTAGE);
-
-	/* Load microcode before RAM init */
-	if (CONFIG(SUPPORT_CPU_UCODE_IN_CBFS))
-		intel_update_microcode_from_cbfs();
-
-	/* Display parameters */
-	if (!CONFIG(NO_MMCONF_SUPPORT))
-		printk(BIOS_SPEW, "CONFIG_MMCONF_BASE_ADDRESS: 0x%08x\n",
-			CONFIG_MMCONF_BASE_ADDRESS);
-	printk(BIOS_INFO, "Using FSP 1.1\n");
-
-	/* Display FSP banner */
-	print_fsp_info(fih);
-
-	/* Stash FSP version. */
-	params.fsp_version = fsp_version(fih);
-
-	/* Get power state */
-	params.power_state = fill_power_state();
-
-	/* Call into mainboard. */
-	mainboard_romstage_entry(&params);
-	soc_after_ram_init(&params);
-	post_code(0x38);
-}
-
-void cache_as_ram_stage_main(FSP_INFO_HEADER *fih)
-{
-	romstage_main(fih);
-}
-
-/* Entry from the mainboard. */
-void romstage_common(struct romstage_params *params)
+static void raminit_common(struct romstage_params *params)
 {
 	bool s3wake;
 	struct region_device rdev;
@@ -153,6 +112,47 @@ void romstage_common(struct romstage_params *params)
 		full_reset();
 }
 
+void cache_as_ram_stage_main(FSP_INFO_HEADER *fih)
+{
+	struct romstage_params params = {
+		.chipset_context = fih,
+	};
+
+	post_code(0x30);
+
+	timestamp_add_now(TS_START_ROMSTAGE);
+
+	/* Load microcode before RAM init */
+	if (CONFIG(SUPPORT_CPU_UCODE_IN_CBFS))
+		intel_update_microcode_from_cbfs();
+
+	/* Display parameters */
+	if (!CONFIG(NO_MMCONF_SUPPORT))
+		printk(BIOS_SPEW, "CONFIG_MMCONF_BASE_ADDRESS: 0x%08x\n",
+			CONFIG_MMCONF_BASE_ADDRESS);
+	printk(BIOS_INFO, "Using FSP 1.1\n");
+
+	/* Display FSP banner */
+	print_fsp_info(fih);
+
+	/* Stash FSP version. */
+	params.fsp_version = fsp_version(fih);
+
+	/* Get power state */
+	params.power_state = fill_power_state();
+
+	/* Board initialization before and after RAM is enabled */
+	mainboard_pre_raminit(&params);
+
+	post_code(0x31);
+
+	/* Initialize memory */
+	raminit_common(&params);
+
+	soc_after_ram_init(&params);
+	post_code(0x38);
+}
+
 /* Initialize the power state */
 __weak struct chipset_power_state *fill_power_state(void)
 {
@@ -160,13 +160,8 @@ __weak struct chipset_power_state *fill_power_state(void)
 }
 
 /* Board initialization before and after RAM is enabled */
-__weak void mainboard_romstage_entry(
-	struct romstage_params *params)
+__weak void mainboard_pre_raminit(struct romstage_params *params)
 {
-	post_code(0x31);
-
-	/* Initialize memory */
-	romstage_common(params);
 }
 
 /* Save the DIMM information for SMBIOS table 17 */

src/mainboard/google/cyan/romstage.c

@@ -19,13 +19,6 @@
 
 #include "spd/spd_util.h"
 
-/* All FSP specific code goes in this block */
-void mainboard_romstage_entry(struct romstage_params *rp)
-{
-	/* Call back into chipset code with platform values updated. */
-	romstage_common(rp);
-}
-
 void mainboard_memory_init_params(struct romstage_params *params,
 	MEMORY_INIT_UPD *memory_params)
 {

src/mainboard/google/glados/romstage.c

@@ -25,15 +25,13 @@
 #include "spd/spd_util.h"
 #include "spd/spd.h"
 
-void mainboard_romstage_entry(struct romstage_params *params)
+void mainboard_pre_raminit(struct romstage_params *params)
 {
 #ifdef EC_ENABLE_KEYBOARD_BACKLIGHT
 	/* Turn on keyboard backlight to indicate we are booting */
 	if (params->power_state->prev_sleep_state != ACPI_S3)
 		google_chromeec_kbbacklight(25);
 #endif
-	/* Initialize memory */
-	romstage_common(params);
 }
 
 void mainboard_memory_init_params(struct romstage_params *params,

src/mainboard/intel/kunimitsu/romstage.c

@@ -20,12 +20,6 @@
 #include "gpio.h"
 #include "spd/spd.h"
 
-void mainboard_romstage_entry(struct romstage_params *params)
-{
-	/* Initialize memory */
-	romstage_common(params);
-}
-
 void mainboard_memory_init_params(struct romstage_params *params,
 				  MEMORY_INIT_UPD *memory_params)
 {

src/mainboard/intel/saddlebrook/romstage.c

@@ -33,12 +33,6 @@ void car_mainboard_pre_console_init(void)
 	nuvoton_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
 }
 
-void mainboard_romstage_entry(struct romstage_params *params)
-{
-	post_code(0x31);
-	romstage_common(params);
-}
-
 void mainboard_memory_init_params(
 	struct romstage_params *params,
 	MEMORY_INIT_UPD *memory_params)

src/mainboard/intel/strago/romstage.c

@@ -14,8 +14,6 @@
  * GNU General Public License for more details.
  */
 
-#include <soc/gpio.h>
-#include <soc/pci_devs.h>
 #include <soc/romstage.h>
 #include "onboard.h"
 #include <boardid.h>