Allow users to pick a logo

Makefile.in

@@ -85,7 +85,7 @@ VPATH := $(addprefix $(src_dir)/, $(sprojs_enabled))
 CC            := @CC@
 READELF       := @READELF@
 OBJCOPY       := @OBJCOPY@
-CFLAGS        := @CFLAGS@ $(CFLAGS) -DBBL_PAYLOAD=\"bbl_payload\"
+CFLAGS        := @CFLAGS@ $(CFLAGS) -DBBL_PAYLOAD=\"bbl_payload\" -DBBL_LOGO_FILE=\"@BBL_LOGO_FILE@\"
 BBL_PAYLOAD   := @BBL_PAYLOAD@
 COMPILE       := $(CC) -MMD -MP $(CFLAGS) \
                  $(sprojs_include)

bbl/bbl.ac

@@ -6,3 +6,7 @@ AS_IF([test "x$enable_logo" == "xyes"], [
 AC_ARG_WITH([payload], AS_HELP_STRING([--with-payload], [Set ELF payload for bbl]),
   [AC_SUBST([BBL_PAYLOAD], $with_payload, [Kernel payload for bbl])],
   [AC_SUBST([BBL_PAYLOAD], [dummy_payload], [Kernel payload for bbl])])
+
+AC_ARG_WITH([logo], AS_HELP_STRING([--with-logo], [Specify a better logo]),
+  [AC_SUBST([BBL_LOGO_FILE], $with_logo, [Logo for bbl])],
+  [AC_SUBST([BBL_LOGO_FILE], [riscv_logo.txt], [Logo for bbl])])

bbl/bbl.mk.in

@@ -12,6 +12,7 @@ bbl_c_srcs = \
 
 bbl_asm_srcs = \
   payload.S \
+  raw_logo.S \
 
 payload.o: bbl_payload
 

bbl/logo.c

@@ -1,30 +1,7 @@
 #include <string.h>
 #include "mtrap.h"
 
-static const char logo[] =
-"              vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv\n"
-"                  vvvvvvvvvvvvvvvvvvvvvvvvvvvv\n"
-"rrrrrrrrrrrrr       vvvvvvvvvvvvvvvvvvvvvvvvvv\n"
-"rrrrrrrrrrrrrrrr      vvvvvvvvvvvvvvvvvvvvvvvv\n"
-"rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv\n"
-"rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv\n"
-"rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv\n"
-"rrrrrrrrrrrrrrrr      vvvvvvvvvvvvvvvvvvvvvv  \n"
-"rrrrrrrrrrrrr       vvvvvvvvvvvvvvvvvvvvvv    \n"
-"rr                vvvvvvvvvvvvvvvvvvvvvv      \n"
-"rr            vvvvvvvvvvvvvvvvvvvvvvvv      rr\n"
-"rrrr      vvvvvvvvvvvvvvvvvvvvvvvvvv      rrrr\n"
-"rrrrrr      vvvvvvvvvvvvvvvvvvvvvv      rrrrrr\n"
-"rrrrrrrr      vvvvvvvvvvvvvvvvvv      rrrrrrrr\n"
-"rrrrrrrrrr      vvvvvvvvvvvvvv      rrrrrrrrrr\n"
-"rrrrrrrrrrrr      vvvvvvvvvv      rrrrrrrrrrrr\n"
-"rrrrrrrrrrrrrr      vvvvvv      rrrrrrrrrrrrrr\n"
-"rrrrrrrrrrrrrrrr      vv      rrrrrrrrrrrrrrrr\n"
-"rrrrrrrrrrrrrrrrrr          rrrrrrrrrrrrrrrrrr\n"
-"rrrrrrrrrrrrrrrrrrrr      rrrrrrrrrrrrrrrrrrrr\n"
-"rrrrrrrrrrrrrrrrrrrrrr  rrrrrrrrrrrrrrrrrrrrrr\n"
-"\n"
-"       INSTRUCTION SETS WANT TO BE FREE\n";
+extern const char logo[];
 
 void print_logo()
 {

bbl/raw_logo.S

@@ -0,0 +1,7 @@
+#include "encoding.h"
+
+  .section .rodata
+  .globl logo
+logo:
+  .incbin BBL_LOGO_FILE
+  .byte 0

bbl/riscv_logo.txt

@@ -0,0 +1,23 @@
+              vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
+                  vvvvvvvvvvvvvvvvvvvvvvvvvvvv
+rrrrrrrrrrrrr       vvvvvvvvvvvvvvvvvvvvvvvvvv
+rrrrrrrrrrrrrrrr      vvvvvvvvvvvvvvvvvvvvvvvv
+rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv
+rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv
+rrrrrrrrrrrrrrrrrr    vvvvvvvvvvvvvvvvvvvvvvvv
+rrrrrrrrrrrrrrrr      vvvvvvvvvvvvvvvvvvvvvv  
+rrrrrrrrrrrrr       vvvvvvvvvvvvvvvvvvvvvv    
+rr                vvvvvvvvvvvvvvvvvvvvvv      
+rr            vvvvvvvvvvvvvvvvvvvvvvvv      rr
+rrrr      vvvvvvvvvvvvvvvvvvvvvvvvvv      rrrr
+rrrrrr      vvvvvvvvvvvvvvvvvvvvvv      rrrrrr
+rrrrrrrr      vvvvvvvvvvvvvvvvvv      rrrrrrrr
+rrrrrrrrrr      vvvvvvvvvvvvvv      rrrrrrrrrr
+rrrrrrrrrrrr      vvvvvvvvvv      rrrrrrrrrrrr
+rrrrrrrrrrrrrr      vvvvvv      rrrrrrrrrrrrrr
+rrrrrrrrrrrrrrrr      vv      rrrrrrrrrrrrrrrr
+rrrrrrrrrrrrrrrrrr          rrrrrrrrrrrrrrrrrr
+rrrrrrrrrrrrrrrrrrrr      rrrrrrrrrrrrrrrrrrrr
+rrrrrrrrrrrrrrrrrrrrrr  rrrrrrrrrrrrrrrrrrrrrr
+
+       INSTRUCTION SETS WANT TO BE FREE

configure

@@ -590,6 +590,7 @@ ac_subst_vars='LTLIBOBJS
 LIBOBJS
 subprojects_enabled
 subprojects
+BBL_LOGO_FILE
 BBL_PAYLOAD
 install_subdir
 RISCV
@@ -674,6 +675,7 @@ enable_optional_subprojects
 enable_vm
 enable_logo
 with_payload
+with_logo
 enable_fp_emulation
 '
       ac_precious_vars='build_alias
@@ -1329,6 +1331,7 @@ Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
   --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
   --with-payload          Set ELF payload for bbl
+  --with-logo             Specify a better logo
 
 Some influential environment variables:
   CC          C compiler command
@@ -4254,6 +4257,17 @@ fi
 
 
 
+# Check whether --with-logo was given.
+if test "${with_logo+set}" = set; then :
+  withval=$with_logo; BBL_LOGO_FILE=$with_logo
+
+else
+  BBL_LOGO_FILE=riscv_logo.txt
+
+fi
+
+
+