Hello from mipsel

conf/mips.rmk

@@ -2,7 +2,7 @@
 # -*- makefile -*-
 
 COMMON_ASFLAGS = -nostdinc
-COMMON_CFLAGS = 
+COMMON_CFLAGS = -mexplicit-relocs -mflush-func=grub_cpu_flush_cache
 COMMON_LDFLAGS += -nostdlib
 
 # Used by various components.  These rules need to precede them.
@@ -17,7 +17,7 @@ kernel_img_HEADERS = boot.h cache.h device.h disk.h dl.h elf.h elfload.h \
 	env.h err.h file.h fs.h kernel.h misc.h mm.h net.h parser.h reader.h \
 	symbol.h term.h time.h types.h loader.h partition.h \
 	msdos_partition.h machine/kernel.h handler.h list.h \
-	command.h
+	command.h machine/memory.h cpu/libgcc.h cpu/cache.h
 
 symlist.c: $(addprefix include/grub/,$(kernel_img_HEADERS)) config.h gensymlist.sh
 	/bin/sh gensymlist.sh $(filter %.h,$^) > $@ || (rm -f $@; exit 1)
@@ -99,8 +99,8 @@ kernel_img_LDFLAGS = $(COMMON_LDFLAGS) -static-libgcc -lgcc \
 	-Wl,-N,-S,-Ttext,$(LINK_BASE),-Bstatic
 
 # Scripts.
-sbin_SCRIPTS = grub-install
-bin_SCRIPTS = grub-mkrescue
+sbin_SCRIPTS = 
+bin_SCRIPTS = 
 
 # Modules.
 pkglib_MODULES = memdisk.mod \

genmoddep.awk

@@ -29,7 +29,7 @@ FNR == 1 {
   if ($1 in symtab) {
     modtab[module] = modtab[module] " " symtab[$1];
   }
-  else {
+  else if ($1 != "__gnu_local_gp"){
     printf "%s in %s is not defined\n", $1, module >"/dev/stderr";
     error++;
     exit;

include/grub/mipsel/qemu-r4k/memory.h

@@ -27,9 +27,27 @@
 
 #define GRUB_MACHINE_MEMORY_STACK_HIGH       0x81000000
 
+#define GRUB_MACHINE_MEMORY_AVAILABLE        1
+
 #ifndef ASM_FILE
 grub_err_t EXPORT_FUNC (grub_machine_mmap_iterate)
 (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t));
+grub_err_t EXPORT_FUNC(grub_machine_mmap_iterate)
+     (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, grub_uint64_t, grub_uint32_t));
+
+static inline grub_err_t
+grub_machine_mmap_register (grub_uint64_t start __attribute__ ((unused)),
+			    grub_uint64_t size __attribute__ ((unused)),
+			    int type __attribute__ ((unused)),
+			    int handle __attribute__ ((unused)))
+{
+  return GRUB_ERR_NONE;
+}
+static inline grub_err_t
+grub_machine_mmap_unregister (int handle  __attribute__ ((unused)))
+{
+  return GRUB_ERR_NONE;
+}
 #endif
 
 #endif

kern/main.c

@@ -149,29 +149,45 @@ grub_load_normal_mode (void)
 void
 grub_main (void)
 {
+  *((grub_uint8_t *)0x140003f8) = '1';
+
   /* First of all, initialize the machine.  */
   grub_machine_init ();
 
+  *((grub_uint8_t *)0x140003f8) = '2';
+
   /* Hello.  */
   grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
+  *((grub_uint8_t *)0x140003f8) = 'a';
   grub_printf ("Welcome to GRUB!\n\n");
+  *((grub_uint8_t *)0x140003f8) = 'b';
   grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
 
+  *((grub_uint8_t *)0x140003f8) = '3';
+
   /* Load pre-loaded modules and free the space.  */
   grub_register_exported_symbols ();
   grub_load_modules ();
 
+  *((grub_uint8_t *)0x140003f8) = '4';
+
   /* It is better to set the root device as soon as possible,
      for convenience.  */
   grub_machine_set_prefix ();
   grub_env_export ("prefix");
   grub_set_root_dev ();
 
+  *((grub_uint8_t *)0x140003f8) = '5';
+
   grub_register_core_commands ();
   grub_register_rescue_parser ();
   grub_register_rescue_reader ();
 
+  *((grub_uint8_t *)0x140003f8) = '6';
+
   grub_load_config ();
+  *((grub_uint8_t *)0x140003f8) = '7';
   grub_load_normal_mode ();
+  *((grub_uint8_t *)0x140003f8) = '8';
   grub_reader_loop (0);
 }

kern/mipsel/cache.S

@@ -1,5 +1,5 @@
 #include <grub/symbol.h>
 
 FUNCTION (grub_arch_sync_caches)
-FUNCTION (_flush_cache)
+FUNCTION (grub_cpu_flush_cache)
 	j $31

kern/mipsel/qemu-r4k/init.c

@@ -4,9 +4,13 @@
 #include <grub/time.h>
 #include <grub/types.h>
 #include <grub/misc.h>
+#include <grub/mm.h>
 #include <grub/machine/kernel.h>
+#include <grub/machine/memory.h>
 #include <grub/cpu/kernel.h>
 
+#define RAMSIZE (*(grub_uint32_t *) ((16 << 20) - 264))
+
 grub_uint32_t
 grub_get_rtc (void)
 {
@@ -17,6 +21,8 @@ grub_get_rtc (void)
 void
 grub_machine_init (void)
 {
+  grub_mm_init_region ((void *) GRUB_MACHINE_MEMORY_STACK_HIGH,
+		       RAMSIZE - GRUB_MACHINE_MEMORY_STACK_HIGH);
 }
 
 void
@@ -56,3 +62,13 @@ grub_arch_modules_addr (void)
 {
   return ALIGN_UP((grub_addr_t) _end + GRUB_MOD_GAP, GRUB_MOD_ALIGN);
 }
+
+grub_err_t 
+grub_machine_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t, 
+							 grub_uint64_t, 
+							 grub_uint32_t))
+{
+  hook (0, RAMSIZE,
+	GRUB_MACHINE_MEMORY_AVAILABLE);
+  return GRUB_ERR_NONE;
+}

kern/term.c

@@ -48,8 +48,9 @@ struct grub_handler_class grub_term_output_class =
 void
 grub_putcode (grub_uint32_t code)
 {
-  int height = grub_getwh () & 255;
+  //  int height = grub_getwh () & 255;
 
+#if 0
   if (code == '\t' && grub_cur_term_output->getxy)
     {
       int n;
@@ -60,13 +61,15 @@ grub_putcode (grub_uint32_t code)
 
       return;
     }
+#endif
 
-  (grub_cur_term_output->putchar) (code);
+  //  (grub_cur_term_output->putchar) (code);
+  *((grub_uint8_t *)0x140003f8) = code;
 
   if (code == '\n')
     {
       grub_putcode ('\r');
-
+#if 0
       grub_more_lines++;
 
       if (grub_more && grub_more_lines == height - 1)
@@ -93,6 +96,7 @@ grub_putcode (grub_uint32_t code)
 	  else
 	    grub_more_lines = 0;
 	}
+#endif
     }
 }
 
@@ -182,14 +186,14 @@ grub_cls (void)
 void
 grub_setcolorstate (grub_term_color_state state)
 {
-  if (grub_cur_term_output->setcolorstate)
+  if (grub_cur_term_output && grub_cur_term_output->setcolorstate)
     (grub_cur_term_output->setcolorstate) (state);
 }
 
 void
 grub_setcolor (grub_uint8_t normal_color, grub_uint8_t highlight_color)
 {
-  if (grub_cur_term_output->setcolor)
+  if (grub_cur_term_output && grub_cur_term_output->setcolor)
     (grub_cur_term_output->setcolor) (normal_color, highlight_color);
 }