Rest of monolithic CILO files.

Makefile

@@ -5,6 +5,8 @@ TEXTADDR=0x80008000
 ifndef CROSS_COMPILE
 CROSS_COMPILE=mips-elf-
 endif
+CFLAGS=-DDEBUG -mno-abicalls
+LDFLAGS=-Ttext ${TEXTADDR}
 
 # Configuration for the Cisco 3660 Routers
 # TARGET=c3600
@@ -16,14 +18,15 @@ endif
 
 # Configuration for the Cisco 1700 Series Routers
 #TARGET=c1700
-# MACHINE=0x33
+#MACHCODE=0x33
 #TEXTADDR=0x80008000
 #ifndef CROSS_COMPILE
 #CROSS_COMPILE=powerpc-elf-
 #endif
+#LDFLAGS=-Ttext=${TEXTADDR}
 
 # additional CFLAGS
-CFLAGS=
+CFLAGS+=
 
 # don't modify anything below here
 # ===================================================================
@@ -42,13 +45,13 @@ RAW=${OBJCOPY} --strip-unneeded --alt-machine-code ${MACHCODE}
 
 INCLUDE=-Iinclude/ -Imach/${TARGET} -Iinclude/mach/${TARGET}
 
-CFLAGS+=-fno-builtin -fomit-frame-pointer -fno-pic -mno-abicalls \
+CFLAGS+=-fno-builtin -fomit-frame-pointer -fno-pic \
 	-Wall
 
 ASFLAGS=-D__ASSEMBLY__-xassembler-with-cpp -traditional-cpp
 
-LDFLAGS=--omagic -nostartfiles -nostdlib --discard-all --strip-all \
+LDFLAGS+=--omagic -nostartfiles -nostdlib --discard-all --strip-all \
-	-Ttext ${TEXTADDR} --entry _start
+	--entry _start
 
 OBJECTS=string.o main.o ciloio.o printf.o elf_loader.o
 
@@ -75,13 +78,11 @@ sub:
 	@for i in $(MACHDIR); do \
 	echo "Making all in $$i..."; \
 	(cd $$i; $(MAKE) $(MFLAGS) $(THISFLAGS) all); done
-	(cd second/; $(MAKE) $(MFLAGS))
 
 subclean:
 	@for i in $(MACHDIR); do \
 	echo "Cleaning all in $$i..."; \
 	(cd $$i; $(MAKE) $(MFLAGS) clean); done
-	(cd second/; $(MAKE) $(MFLAGS) clean)
 
 clean: subclean
 	-rm -f *.o

README

@@ -22,23 +22,18 @@ target architecture is mips-elf and not mips-unknown-linux-gnu), just go
 to the root directory of the source distribution and type make. Everything
 should build from there.
 
-Next, build the second stage bootloader by going to the second/ directory 
+Copy the ciscoload.bin file to the router's flash along with your kernel and 
-and typing make.
+set the router boot image to be ciscoload.bin.
-
-Copy the ciscoload.bin and ciscoload.two files to the router's flash along
-with your kernel and set the router boot image to be ciscoload.bin.
 
 4. How do I use CILO?
 Assuming you have one of the supported routers, it is really quite easy. 
-In short, you must build CiscoLoad, build the stage-two loader and copy 
+In short, you must build CiscoLoad and a kernel then copy  them to your 
-them to your device's flash, typically using IOS.
+device's flash, typically using IOS.
 
 When the router boots, it will load CILO; CILO then will prompt you to 
 select the file you want to boot. Enter the file name you wish to boot, and 
 away you go!
 
-Of course, it makes sense to put your kernel on your flash device as well.
-
 5. What hardware is supported?
 At this time, the Cisco 3600 Series of routers (3620 and 3640 at least) are
 very well supported. As well, preliminary support is underway for the 

elf2mzip/elf2img.c

@@ -19,10 +19,11 @@
 
 void usage(const char *s)
 {
-    printf("usage: %s [-m] [elffile] [outfile]\n", s);
+    printf("usage: %s [-m] [elffile] [outfile] [descrfile]\n", s);
     printf("\t-m Generates an MZIP image\n");
     printf("\t[elffile] Input ELF file\n");
     printf("\t[outfile] Output image\n");
+    printf("\t[descrfile] file containing textual description of image\n");
     printf("The parameters of the format to be converted to are determined "
         "based\non the structure of the input ELF file.\n\n");
 }
@@ -64,14 +65,15 @@ int main(const int argc, const char *argv[])
     struct elf32_phdr *phdr;
     int i;
     char swap = 0;
-    const char *file_in = argv[argc - 2];
+    const char *file_in = argv[argc - 3];
-    const char *file_out = argv[argc - 1];
+    const char *file_out = argv[argc - 2];
+    const char *file_desc = argv[argc - 1];
     char mzip = 0;
 
     printf("elf2img - Cisco Router Image Generation Utility.\n");
     printf("(c) 2009 Philippe Vachon <philippe@cowpig.ca>\n\n");
 
-    if (argc < 2) {
+    if (argc < 3) {
         printf("Insufficient arguments.\n");
         USAGE;
         return -1;
@@ -241,13 +243,43 @@ int main(const int argc, const char *argv[])
 
     mzip_print_header(&mz);
      
+    /* read in the description file */
+    FILE *fp_desc = fopen(file_desc, "r");
+    if (!fp_desc) {
+        printf("Unable to open description file.\n");
+        USAGE;
+        goto quit;
+    }
+
+    fseek(fp_desc, 0, SEEK_END);
+    uint32_t desc_len = ftell(fp_desc);
+
+    char *desc_buf = (char *)malloc(desc_len);
+    if (desc_buf == NULL) {
+        printf("Error while allocating memory for description buffer.\n");
+        goto quit;
+    }
+
+    rewind(fp_desc);
+    fread(desc_buf, desc_len, 1, fp_desc);
+
+    fclose(fp_desc);
+
+    printf("Descriptor:\n%s", desc_buf);
+
     /* write out the MZIP file */
     mzip_write_header(fp_out, &mz);
     mzip_write_codeseg(fp_out, zip_buf, seg_size);
 
+    fseek(fp_out, 0, SEEK_END);
+
+    fwrite(desc_buf, desc_len, 1, fp_out);
+
+quit:
     if (zip_buf) free(zip_buf);
 
     free(phdr);
+    free(desc_buf);
     fclose(fp_in);
     fclose(fp_out);
     return 0;

elf_loader.c

@@ -63,10 +63,9 @@ void load_elf32_uninitialized_memory(uint32_t address, uint32_t length)
  * @param loader_addr address of the loader binary in memory
  * @return  
  */
-int load_elf32_file(struct file *fp)
+int load_elf32_file(struct file *fp, char *cmd_line)
 {
     struct elf32_header hdr;
-
     uint32_t mem_sz = 0;
 
     /* read in header entries */
@@ -110,21 +109,6 @@ int load_elf32_file(struct file *fp)
     uint32_t offset = 0xffffffff;
 
     cilo_seek(fp, hdr.phoff, SEEK_SET);
-    /* read in program header(s), determine total memory size of image */
-    /* TODO: figure out if there's a better way to determine this */
-    for (i = 0; i < hdr.phnum; i++) {
-        cilo_read(&phdr, sizeof(struct elf32_phdr), 1, fp);
-
-        if (phdr.type != ELF_PT_LOAD) continue;
-
-        mem_sz += phdr.memsz;
-
-        if (phdr.paddr < offset) offset = phdr.paddr;
-    }
-
-#ifdef DEBUG
-    printf("mem_sz = %08x\n", mem_sz);
-#endif
 
     /* read the PT_LOAD segments into memory at paddr + mem_sz */
     cilo_seek(fp, hdr.phoff, SEEK_SET);
@@ -134,35 +118,32 @@ int load_elf32_file(struct file *fp)
         /* skip unloadable segments */
         if (phdr.type != ELF_PT_LOAD) continue;
 
-        /* uint32_t leftover = phdr.memsz - phdr.filesz; */
+        load_elf32_section(fp, phdr.paddr,
-        load_elf32_section(fp, mem_sz + phdr.paddr,
             phdr.offset, phdr.filesz);
 
-/*        if (leftover > 0) {
+        mem_sz += phdr.memsz;
-            load_elf32_uninitialized_memory(mem_sz + phdr.paddr +
+
-                phdr.filesz, leftover);
+        if (phdr.memsz - phdr.filesz > 0) {
-        } */
+            load_elf32_uninitialized_memory(phdr.paddr +
+                phdr.filesz, phdr.memsz - phdr.filesz);
+        }
 
         cilo_seek(fp, hdr.phoff + sizeof(struct elf32_phdr) * (i + 1), 
             SEEK_SET);
     }
 
     /* assume the entry point is the smallest address we're loading */
-    uint32_t load_offset = mem_sz + offset;
+    printf("Loaded %d bytes.\n", mem_sz);
-
-    printf("Loaded %d bytes at %08x.\n", mem_sz, load_offset);
 
     printf("Kicking into Linux.\n");
 
 #ifdef DEBUG
-    printf("load_offset = 0x%08x\n", load_offset);
     printf("hdr.entry = 0x%08x\n", hdr.entry);
     printf("mem_sz = 0x%08x\n", mem_sz);
-    printf("offset = 0x%08x\n", offset);
 #endif
 
-    /* Jump to the copy routine */
+    ((void (*)(uint32_t mem_sz, char *cmd_line))(hdr.entry))
-    stage_two(load_offset, hdr.entry, mem_sz, offset);
+        (c_memsz(), cmd_line);
 
     return -1; /* something failed, badly */
 }

include/elf_loader.h

@@ -7,6 +7,6 @@
 void load_elf32_section(struct file *fp, uint32_t address, 
     uint32_t file_offset, uint32_t length);
 void load_elf32_uninitialized_memory(uint32_t address, uint32_t length);
-int load_elf32_file(struct file *fp);
+int load_elf32_file(struct file *fp, char *cmd_line);
 
 #endif /* _ELF_LOADER_H */

include/mach/c3600/platform.h

@@ -10,8 +10,5 @@
 void platform_init();
 uint32_t check_flash();
 void flash_directory();
-uint32_t locate_stage_two();
-void stage_two(uint32_t kern_off, uint32_t kern_entry, uint32_t kern_size,
-    uint32_t kern_loadpt);
 
 #endif /* _INCLUDE_MACH_C3600_PLATFORM_H */

mach/c3600/platform.c

@@ -42,28 +42,3 @@ void flash_directory()
         f = (struct fs_ent *)(FLASH_BASE + offset);
     }
 }
-
-/**
- * Locate the stage two loader for CiscoLoad for this particular platform
- * returns 0 if not found, 1 if found
- */
-uint32_t locate_stage_two()
-{
-    return platio_find_file("ciscoload.two");
-}
-
-/**
- * Kick into the stage two loader.
- */
-void stage_two(uint32_t kern_off, uint32_t kern_entry, uint32_t kern_size, 
-    uint32_t kern_loadpt)
-{
-    uint32_t s2addr = ((uint32_t)find_file("ciscoload.two", FLASH_BASE)) +
-        sizeof(struct fs_ent);
-
-
-    ((void (*)(uint32_t data_offset, uint32_t data_length, uint32_t entry_pt,
-        uint32_t load_offset)) (s2addr))
-        (kern_off, kern_size, kern_entry, kern_loadpt);
-    
-}

main.c

@@ -71,13 +71,6 @@ void start_bootloader()
     c_putc('O');
     platform_init();
 
-    /* locate the stage two loader */
-    if (!locate_stage_two()) {
-        printf("\nError: Unable to find valid stage two loader. "
-            "Aborting load.\n");
-        return;
-    }
-
     printf("\nCiscoLoader (CILO) - Linux bootloader for Cisco Routers\n");
     printf("Available RAM: %d kB\n", r);
 
@@ -121,7 +114,7 @@ enter_filename:
         printf("DEBUG: cmd_line: %s\n", cmd_line);
 #endif
         printf("Booting %s.\n", kernel);
-        if (load_elf32_file(&kernel_file) 
+        if (load_elf32_file(&kernel_file, cmd_line) 
             < 0) 
         {
             printf("Fatal error while loading kernel. Aborting.\n");