riscv: Remove config string support

The code dealing with the old config string isn't needed anymore,
because the config string has been deprecated in favor of
OpenFirmware-derived devicetrees.

Change-Id: I71398fb4861dbaf7eefc6e6f222bb7159798fafa
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/22594
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/arch/riscv/Kconfig

@@ -19,8 +19,3 @@ config ARCH_ROMSTAGE_RISCV
 config ARCH_RAMSTAGE_RISCV
 	bool
 	default n
-
-config RISCV_CONFIGSTRING
-	hex "Location of pointer to RISCV config string"
-	default 0x100c
-	depends on ARCH_RISCV

src/arch/riscv/Makefile.inc

@@ -43,8 +43,7 @@ bootblock-y += \
 	$(top)/src/lib/memcmp.c \
 	$(top)/src/lib/memcpy.c \
 	$(top)/src/lib/memmove.c \
-	$(top)/src/lib/memset.c \
-	$(top)/src/commonlib/configstring.c
+	$(top)/src/lib/memset.c
 
 $(objcbfs)/bootblock.debug: $$(bootblock-objs)
 	@printf "    LINK       $(subst $(obj)/,,$(@))\n"
@@ -70,8 +69,7 @@ romstage-y += \
 	$(top)/src/lib/memcmp.c \
 	$(top)/src/lib/memcpy.c \
 	$(top)/src/lib/memmove.c \
-	$(top)/src/lib/memset.c \
-	$(top)/src/commonlib/configstring.c
+	$(top)/src/lib/memset.c
 
 romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
 
@@ -103,8 +101,7 @@ ramstage-y += \
 	$(top)/src/lib/memcmp.c \
 	$(top)/src/lib/memcpy.c \
 	$(top)/src/lib/memmove.c \
-	$(top)/src/lib/memset.c \
-	$(top)/src/commonlib/configstring.c
+	$(top)/src/lib/memset.c
 
 $(eval $(call create_class_compiler,rmodules,riscv))
 

src/arch/riscv/boot.c

@@ -18,13 +18,12 @@
 #include <arch/encoding.h>
 #include <rules.h>
 #include <console/console.h>
-#include <commonlib/configstring.h>
 
 void arch_prog_run(struct prog *prog)
 {
 	void (*doit)(void *) = prog_entry(prog);
 	void riscvpayload(const char *configstring, void *payload);
-	const char *config = configstring();
+	const char *config = NULL;
 
 	if (ENV_RAMSTAGE && prog_type(prog) == PROG_PAYLOAD) {
 		printk(BIOS_SPEW, "Config string: '%s'\n", config);

src/arch/riscv/trap_handler.c

@@ -18,7 +18,6 @@
 #include <console/console.h>
 #include <string.h>
 #include <vm.h>
-#include <commonlib/configstring.h>
 
 static uint64_t *time;
 static uint64_t *timecmp;