{drivers,soc/intel/braswell}: Implement C_ENVIRONMENT_BOOTBLOCK support

No C_ENVIRONMENT_BOOTBLOCK support for Braswell is available.
Enable support and add required files for the Braswell Bootblock in C.

The next changes are made support C_ENVIRONMENT_BOOTBLOCK:
- Add car_stage_entry() function bootblock-c_entry() functions.
- Specify config DCACHE_BSP_STACK_SIZE and C_ENV_BOOTBLOCK_SIZE.
- Add bootblock_c_entry().
- Move init from car_soc_XXX_console_init() to bootblock_soc_XXX_Init()

Removed the unused cache_as_ram_main() and weak car_XXX_XXX_console_init()

BUG=NA
TEST=Booting Embedded Linux on Facebook FBG-1701
     Building Google Banos

Change-Id: Iab48ad72f1514c93f20d70db5ef4fd8fa2383e8c
Signed-off-by: Frans Hendriks <fhendriks@eltan.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/29662
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/soc/intel/braswell/Makefile.inc b/src/soc/intel/braswell/Makefile.inc
index e479a3c5e5..1017d80c65 100644
--- a/src/soc/intel/braswell/Makefile.inc
+++ b/src/soc/intel/braswell/Makefile.inc
@@ -9,9 +9,14 @@ subdirs-y += ../../../cpu/intel/microcode
 subdirs-y += ../../../cpu/intel/turbo
 subdirs-y += ../../../cpu/intel/common
 
+bootblock-y += gpio_support.c
+bootblock-y += bootblock/bootblock.c
+bootblock-y += lpc_init.c
+bootblock-y += pmutil.c
+bootblock-y += tsc_freq.c
+
 romstage-y += gpio_support.c
 romstage-y += iosf.c
-romstage-y += lpc_init.c
 romstage-y += memmap.c
 romstage-y += pmutil.c
 romstage-y += smbus.c