soc/amd/psp_verstage: Split up verstage_soc_init

Make psp verstage initialization more granular be splitting
verstage_soc_init into separate functions. Specifically, create
soc init functions for espi, i2c spi, and aoac.

BUG=b:200578885
BRANCH=None
TEST=Build and boot guybrush

Change-Id: I489889a0dfd4016aa4f2b53a2c6a7a1ea4459e60
Signed-off-by: Rob Barnes <robbarnes@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59318
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>

src/soc/amd/common/psp_verstage/fch.c

@@ -152,15 +152,29 @@ uint32_t verstage_soc_early_init(void)
 	return map_fch_devices();
 }
 
-void verstage_soc_init(void)
+void verstage_soc_espi_init(void)
 {
-	if (CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI))
+	if (!CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI))
+		return;
+	printk(BIOS_DEBUG, "Setting up espi\n");
 	espi_setup();
+}
 
-	enable_aoac_devices();
+void verstage_soc_i2c_init(void)
+{
 	printk(BIOS_DEBUG, "Setting up i2c\n");
 	i2c_soc_early_init();
-	printk(BIOS_DEBUG, "i2c setup\n");
+}
+
+void verstage_soc_aoac_init(void)
+{
+	printk(BIOS_DEBUG, "Setting up aoac\n");
+	enable_aoac_devices();
+}
+
+void verstage_soc_spi_init(void)
+{
+	printk(BIOS_DEBUG, "Setting up spi\n");
 	fch_spi_config_modes();
 	show_spi_speeds_and_modes();
 }

src/soc/amd/common/psp_verstage/include/psp_verstage.h

@@ -49,7 +49,10 @@ void test_svc_calls(void);
 uint32_t unmap_fch_devices(void);
 uint32_t verstage_soc_early_init(void);
 void verstage_mainboard_espi_init(void);
-void verstage_soc_init(void);
+void verstage_soc_aoac_init(void);
+void verstage_soc_espi_init(void);
+void verstage_soc_i2c_init(void);
+void verstage_soc_spi_init(void);
 uintptr_t *map_spi_rom(void);
 
 uint32_t get_max_workbuf_size(uint32_t *size);

src/soc/amd/common/psp_verstage/psp_verstage.c

@@ -243,7 +243,19 @@ void Main(void)
 
 	svc_write_postcode(POSTCODE_LATE_INIT);
 	fch_io_enable_legacy_io();
-	verstage_soc_init();
+
+	printk(BIOS_DEBUG, "calling verstage_soc_espi_init\n");
+	verstage_soc_espi_init();
+
+	printk(BIOS_DEBUG, "calling verstage_soc_aoac_init\n");
+	verstage_soc_aoac_init();
+
+	printk(BIOS_DEBUG, "calling verstage_soc_i2c_init\n");
+	verstage_soc_i2c_init();
+
+	printk(BIOS_DEBUG, "calling verstage_soc_spi_init\n");
+	verstage_soc_spi_init();
+
 	verstage_mainboard_init();
 
 	post_code(POSTCODE_VERSTAGE_MAIN);