cpu/intel/slot_1: Move to C_ENVIRONMENT_BOOTBLOCK

Console is not yet enabled in bootblock. This will be done in
a different CL.

Change-Id: Ic751d42a1969fb79fb50366f766d8796846a0bc4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36774
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/southbridge/intel/i82371eb/Kconfig

@@ -4,8 +4,3 @@ config SOUTHBRIDGE_INTEL_I82371EB
 	select SOUTHBRIDGE_INTEL_COMMON_RTC
 	select SOUTHBRIDGE_INTEL_COMMON_RESET
 	bool
-
-config BOOTBLOCK_SOUTHBRIDGE_INIT
-	string
-	default "southbridge/intel/i82371eb/bootblock.c"
-	depends on SOUTHBRIDGE_INTEL_I82371EB

src/southbridge/intel/i82371eb/Makefile.inc

@@ -16,6 +16,8 @@
 
 ifeq ($(CONFIG_SOUTHBRIDGE_INTEL_I82371EB),y)
 
+bootblock-y += bootblock.c
+
 ramstage-y +=  i82371eb.c
 ramstage-y +=  isa.c
 ramstage-y +=  ide.c

src/southbridge/intel/i82371eb/bootblock.c

@@ -18,6 +18,7 @@
 #include <device/pci_ops.h>
 #include <device/pci_ids.h>
 #include <device/pci_type.h>
+#include <cpu/intel/car/bootblock.h>
 #include "i82371eb.h"
 
 #define PCI_ID(VENDOR_ID, DEVICE_ID) \
@@ -34,7 +35,13 @@ static pci_devfn_t pci_locate_device(unsigned int pci_id, pci_devfn_t dev)
 	return PCI_DEV_INVALID;
 }
 
-static void bootblock_southbridge_init(void)
+/* TODO: Does not need to happen before console init. */
+/* The whole rom is not accessible before this so limit
+   the bootblock size. */
+#if CONFIG_C_ENV_BOOTBLOCK_SIZE > 0x10000
+#error "CONFIG_C_ENV_BOOTBLOCK_SIZE needs to be below 64KiB"
+#endif
+void bootblock_early_southbridge_init(void)
 {
 	u16 reg16;
 	pci_devfn_t dev;