nb/intel/gm45: Add C_ENVIRONMENT_BOOTBLOCK support

The i82801ix_early_init is now called both in the bootblock and
romstage. The rationale behind setting this up twice is to ensure
bootblock-romstage compatibility in the future if for instance VBOOT
is used.

This moves the console init to the bootblock.

The romstage now runs uncached. Adding a prog_run hooks to set up an
MTRR to cache the romstage will be done in a followup patch.

The default size of 64KiB is not modified for the bootblock as trying
to fit both EHCI and SPI flash debugging needs a more space and 64KiB
is the next power of 2 size that fits it.

TESTED on Thinkpad X200.

Change-Id: I8f59736cb54377973215f35e35d2cbcd1d82c374
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35992
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/cpu/intel/socket_BGA956/Kconfig

@@ -14,4 +14,8 @@ config DCACHE_RAM_SIZE
 	hex
 	default 0x8000
 
+config DCACHE_BSP_STACK_SIZE
+	hex
+	default 0x2000
+
 endif

src/cpu/intel/socket_BGA956/Makefile.inc

@@ -8,7 +8,8 @@ subdirs-y += ../microcode
 subdirs-y += ../hyperthreading
 subdirs-y += ../speedstep
 
-cpu_incs-y += $(src)/cpu/intel/car/core2/cache_as_ram.S
+bootblock-y += ../car/core2/cache_as_ram.S
+bootblock-y += ../car/bootblock.c
 postcar-y += ../car/p4-netburst/exit_car.S
 
 romstage-y += ../car/romstage.c

src/cpu/intel/socket_p/Kconfig

@@ -15,4 +15,8 @@ config DCACHE_RAM_SIZE
 	hex
 	default 0x8000
 
+config DCACHE_BSP_STACK_SIZE
+	hex
+	default 0x2000
+
 endif

src/cpu/intel/socket_p/Makefile.inc

@@ -9,7 +9,8 @@ subdirs-y += ../microcode
 subdirs-y += ../hyperthreading
 subdirs-y += ../speedstep
 
-cpu_incs-y += $(src)/cpu/intel/car/core2/cache_as_ram.S
+bootblock-y += ../car/core2/cache_as_ram.S
+bootblock-y += ../car/bootblock.c
 postcar-y += ../car/p4-netburst/exit_car.S
 
 romstage-y += ../car/romstage.c

src/mainboard/lenovo/t400/Makefile.inc

@@ -13,7 +13,8 @@
 ## GNU General Public License for more details.
 ##
 
-romstage-y += dock.c
+bootblock-y += bootblock.c
+bootblock-y += dock.c
 
 subdirs-y += variants/$(VARIANT_DIR)/
 

src/mainboard/lenovo/t400/bootblock.c

@@ -0,0 +1,37 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <console/console.h>
+#include <bootblock_common.h>
+#include "dock.h"
+
+static int dock_err;
+
+void bootblock_mainboard_early_init(void)
+{
+	/* Minimal setup to detect dock */
+	dock_err = pc87382_early();
+	if (dock_err == 0)
+		dock_connect();
+}
+
+void bootblock_mainboard_init(void)
+{
+	/* Console is not yet initialized in bootblock_mainboard_early_init,
+	   so we print the dock information here */
+	if (dock_err)
+		printk(BIOS_ERR, "DOCK: Failed to init pc87382\n");
+	else
+		dock_info();
+}

src/mainboard/lenovo/t400/romstage.c

@@ -18,7 +18,6 @@
 #include <southbridge/intel/common/gpio.h>
 #include <northbridge/intel/gm45/gm45.h>
 #include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h>
-#include "dock.h"
 
 static void hybrid_graphics_init(sysinfo_t *sysinfo)
 {
@@ -30,16 +29,6 @@ static void hybrid_graphics_init(sysinfo_t *sysinfo)
 	sysinfo->enable_peg = peg;
 }
 
-static int dock_err;
-
-void mb_setup_superio(void)
-{
-	/* Minimal setup to detect dock */
-	dock_err = pc87382_early();
-	if (dock_err == 0)
-		dock_connect();
-}
-
 void get_mb_spd_addrmap(u8 *spd_addrmap)
 {
 	spd_addrmap[0] = 0x50;
@@ -48,13 +37,6 @@ void get_mb_spd_addrmap(u8 *spd_addrmap)
 
 void mb_pre_raminit_setup(sysinfo_t *sysinfo)
 {
-	/* Console is not yet initialized in mb_setup_superio, so we print
-	   the dock information here */
-	if (dock_err)
-		printk(BIOS_ERR, "DOCK: Failed to init pc87382\n");
-	else
-		dock_info();
-
 	if (CONFIG(BOARD_LENOVO_R500)) {
 		int use_integrated = get_gpio(21);
 		printk(BIOS_DEBUG, "R500 variant found with an %s GPU\n",

src/mainboard/roda/rk9/Makefile.inc

@@ -13,6 +13,8 @@
 ## GNU General Public License for more details.
 ##
 
+bootblock-y += bootblock.c
+
 romstage-y = gpio.c
 
 ramstage-$(CONFIG_CARDBUS_PLUGIN_SUPPORT) += ti_pci7xx1.c

src/mainboard/roda/rk9/bootblock.c

@@ -0,0 +1,63 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 secunet Security Networks AG
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <bootblock_common.h>
+#include <arch/io.h>
+#include <device/pnp_ops.h>
+#include <superio/smsc/lpc47n227/lpc47n227.h>
+
+#define SERIAL_DEV PNP_DEV(0x2e, LPC47N227_SP1)
+
+void bootblock_mainboard_early_init(void)
+{
+	/* Original settings:
+	   idx 30 31 32 33 34 35 36 37  38 39
+	   val 60 00 00 40 00 ff 00 e0  00 80
+	   def 00 00 00 00 00 00 00 00  00 80
+
+	   Values:
+	   GP1 GP2 GP3 GP4
+	    fd  17  88  14
+	*/
+	const pnp_devfn_t sio = PNP_DEV(0x2e, 0);
+
+	/* Enter super-io's configuration state. */
+	pnp_enter_conf_state(sio);
+
+	/* Set lpc47n227's runtime register block's base address. */
+	pnp_write_config(sio, 0x30, 0x600 >> 4);
+
+	/* Set GP23 to alternate function. */
+	pnp_write_config(sio, 0x33, 0x40);
+
+	/* Set GP30 - GP37 to output mode: COM control */
+	pnp_write_config(sio, 0x35, 0xff);
+
+	/* Set GP45 - GP47 to output mode. */
+	pnp_write_config(sio, 0x37, 0xe0);
+
+	/* Set nIO_PME to open drain. */
+	pnp_write_config(sio, 0x39, 0x80);
+
+	/* Exit configuration state. */
+	pnp_exit_conf_state(sio);
+
+	/* Set GPIO output values: */
+	outb(0x88, 0x600 + 0xb + 3); /* GP30 - GP37 */
+	outb(0x10, 0x600 + 0xb + 4); /* GP40 - GP47 */
+
+	lpc47n227_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
+}

src/mainboard/roda/rk9/romstage.c

@@ -14,53 +14,7 @@
  * GNU General Public License for more details.
  */
 
-#include <arch/io.h>
-#include <device/pnp_ops.h>
 #include <northbridge/intel/gm45/gm45.h>
-#include <superio/smsc/lpc47n227/lpc47n227.h>
-
-#define SERIAL_DEV PNP_DEV(0x2e, LPC47N227_SP1)
-
-void mb_setup_superio(void)
-{
-	/* Original settings:
-	   idx 30 31 32 33 34 35 36 37  38 39
-	   val 60 00 00 40 00 ff 00 e0  00 80
-	   def 00 00 00 00 00 00 00 00  00 80
-
-	   Values:
-	   GP1 GP2 GP3 GP4
-	    fd  17  88  14
-	*/
-	const pnp_devfn_t sio = PNP_DEV(0x2e, 0);
-
-	/* Enter super-io's configuration state. */
-	pnp_enter_conf_state(sio);
-
-	/* Set lpc47n227's runtime register block's base address. */
-	pnp_write_config(sio, 0x30, 0x600 >> 4);
-
-	/* Set GP23 to alternate function. */
-	pnp_write_config(sio, 0x33, 0x40);
-
-	/* Set GP30 - GP37 to output mode: COM control */
-	pnp_write_config(sio, 0x35, 0xff);
-
-	/* Set GP45 - GP47 to output mode. */
-	pnp_write_config(sio, 0x37, 0xe0);
-
-	/* Set nIO_PME to open drain. */
-	pnp_write_config(sio, 0x39, 0x80);
-
-	/* Exit configuration state. */
-	pnp_exit_conf_state(sio);
-
-	/* Set GPIO output values: */
-	outb(0x88, 0x600 + 0xb + 3); /* GP30 - GP37 */
-	outb(0x10, 0x600 + 0xb + 4); /* GP40 - GP47 */
-
-	lpc47n227_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
-}
 
 void get_mb_spd_addrmap(u8 *spd_addrmap)
 {

src/northbridge/intel/gm45/Kconfig

@@ -26,15 +26,12 @@ config NORTHBRIDGE_SPECIFIC_OPTIONS # dummy
 	select INTEL_GMA_ACPI
 	select INTEL_GMA_SSC_ALTERNATE_REF
 	select PARALLEL_MP
+	select C_ENVIRONMENT_BOOTBLOCK
 
 config CBFS_SIZE
 	hex
 	default 0x100000
 
-config BOOTBLOCK_NORTHBRIDGE_INIT
-	string
-	default "northbridge/intel/gm45/bootblock.c"
-
 config VGA_BIOS_ID
 	string
 	default "8086,2a42"

src/northbridge/intel/gm45/Makefile.inc

@@ -15,6 +15,8 @@
 
 ifeq ($(CONFIG_NORTHBRIDGE_INTEL_GM45),y)
 
+bootblock-y += bootblock.c
+
 romstage-y += early_init.c
 romstage-y += early_reset.c
 romstage-y += raminit.c

src/northbridge/intel/gm45/bootblock.c

@@ -11,13 +11,14 @@
  * GNU General Public License for more details.
  */
 
+#include <cpu/intel/car/bootblock.h>
 #include <device/pci_ops.h>
 
 /* Just re-define these instead of including gm45.h. It blows up romcc. */
 #define D0F0_PCIEXBAR_LO 0x60
 #define D0F0_PCIEXBAR_HI 0x64
 
-static void bootblock_northbridge_init(void)
+void bootblock_early_northbridge_init(void)
 {
 	uint32_t reg;
 

src/northbridge/intel/gm45/romstage.c

@@ -62,12 +62,6 @@ void mainboard_romstage_entry(void)
 	i82801ix_early_init();
 	setup_pch_gpios(&mainboard_gpio_map);
 
-	i82801ix_lpc_decode();
-
-	mb_setup_superio();
-
-	console_init();
-
 	reg16 = pci_read_config16(LPC_DEV, D31F0_GEN_PMCON_3);
 	pci_write_config16(LPC_DEV, D31F0_GEN_PMCON_3, reg16);
 	if ((MCHBAR16(SSKPD_MCHBAR) == 0xCAFE) && !(reg16 & (1 << 9))) {

src/southbridge/intel/i82801ix/Kconfig

@@ -47,8 +47,4 @@ config HPET_MIN_TICKS
 	hex
 	default 0x80
 
-config BOOTBLOCK_SOUTHBRIDGE_INIT
-	string
-	default "southbridge/intel/i82801ix/bootblock.c"
-
 endif

src/southbridge/intel/i82801ix/Makefile.inc

@@ -35,6 +35,9 @@ ramstage-$(CONFIG_HAVE_SMI_HANDLER) += ../../../cpu/x86/smm/smmrelocate.S
 endif
 smm-y += smihandler.c
 
+bootblock-y += bootblock.c
+bootblock-y += early_init.c
+
 romstage-y += early_init.c
 romstage-y += early_smbus.c
 romstage-y += dmi_setup.c

src/southbridge/intel/i82801ix/bootblock.c

@@ -14,6 +14,9 @@
  */
 
 #include <device/pci_ops.h>
+#include <cpu/intel/car/bootblock.h>
+#include "i82801ix.h"
+
 
 static void enable_spi_prefetch(void)
 {
@@ -28,7 +31,10 @@ static void enable_spi_prefetch(void)
 	pci_write_config8(dev, 0xdc, reg8);
 }
 
-static void bootblock_southbridge_init(void)
+void bootblock_early_southbridge_init(void)
 {
 	enable_spi_prefetch();
+
+	i82801ix_early_init();
+	i82801ix_lpc_decode();
 }