From 72212c137c574b564723327af751c4054c7cfca6 Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@shinybook.infradead.org>
Date: Tue, 11 Apr 2006 19:09:16 -0400
Subject: Initial commit

---
 doc_loadbios.c | 149 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 doc_loadbios.c

(limited to 'doc_loadbios.c')

diff --git a/doc_loadbios.c b/doc_loadbios.c
new file mode 100644
index 0000000..f7ba8fa
--- /dev/null
+++ b/doc_loadbios.c
@@ -0,0 +1,149 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <time.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+
+/* $Id: doc_loadbios.c,v 1.9 2005/11/07 11:15:10 gleixner Exp $ */
+#include <mtd/mtd-user.h>
+
+unsigned char databuf[512];
+
+int main(int argc,char **argv)
+{
+   mtd_info_t meminfo;
+   int ifd,ofd;
+   struct stat statbuf;
+   erase_info_t erase;
+   unsigned long retlen, ofs, iplsize, ipltailsize;
+   unsigned char *iplbuf;
+   iplbuf = NULL;
+
+   if (argc < 3) {
+	   fprintf(stderr,"You must specify a device,"
+			" the source firmware file and the offset\n");
+	   return 1;
+   }
+
+   // Open and size the device
+   if ((ofd = open(argv[1],O_RDWR)) < 0) {
+	   perror("Open flash device");
+	   return 1;
+   }
+
+   if ((ifd = open(argv[2], O_RDONLY)) < 0) {
+	   perror("Open firmware file\n");
+	   close(ofd);
+	   return 1;
+   }
+
+   if (fstat(ifd, &statbuf) != 0) {
+	   perror("Stat firmware file");
+	   goto error;
+   }
+
+#if 0
+   if (statbuf.st_size > 65536) {
+	   printf("Firmware too large (%ld bytes)\n",statbuf.st_size);
+	   goto error;
+   }
+#endif
+
+   if (ioctl(ofd,MEMGETINFO,&meminfo) != 0) {
+	   perror("ioctl(MEMGETINFO)");
+	   goto error;
+   }
+
+   iplsize = (ipltailsize = 0);
+   if (argc >= 4) {
+	   /* DoC Millennium has IPL in the first 1K of flash memory */
+	   /* You may want to specify the offset 1024 to store
+	      the firmware next to IPL. */
+	   iplsize = strtoul(argv[3], NULL, 0);
+	   ipltailsize = iplsize % meminfo.erasesize;
+   }
+
+   if (lseek(ofd, iplsize - ipltailsize, SEEK_SET) < 0) {
+	   perror("lseek");
+	   goto error;
+   }
+
+   if (ipltailsize) {
+	   iplbuf = malloc(ipltailsize);
+	   if (iplbuf == NULL) {
+		   fprintf(stderr, "Not enough memory for IPL tail buffer of"
+			" %lu bytes\n", (unsigned long) ipltailsize);
+		   goto error;
+	   }
+	   printf("Reading IPL%s area of length %lu at offset %lu\n",
+		(iplsize - ipltailsize) ? " tail" : "",
+		(long unsigned) ipltailsize,
+		(long unsigned) (iplsize - ipltailsize));
+	   if (read(ofd, iplbuf, ipltailsize) != ipltailsize) {
+		   perror("read");
+		   goto error;
+	   }
+   }
+
+   erase.length = meminfo.erasesize;
+
+   for (ofs = iplsize - ipltailsize ;
+	ofs < iplsize + statbuf.st_size ;
+	ofs += meminfo.erasesize) {
+	   erase.start = ofs;
+	   printf("Performing Flash Erase of length %lu at offset %lu\n",
+		  (long unsigned) erase.length, (long unsigned) erase.start);
+
+	   if (ioctl(ofd,MEMERASE,&erase) != 0) {
+		   perror("ioctl(MEMERASE)");
+		   goto error;
+	   }
+   }
+
+   if (lseek(ofd, iplsize - ipltailsize, SEEK_SET) < 0) {
+	   perror("lseek");
+	   goto error;
+   }
+
+   if (ipltailsize) {
+	   printf("Writing IPL%s area of length %lu at offset %lu\n",
+		(iplsize - ipltailsize) ? " tail" : "",
+		(long unsigned) ipltailsize,
+		(long unsigned) (iplsize - ipltailsize));
+	   if (write(ofd, iplbuf, ipltailsize) != ipltailsize) {
+		   perror("write");
+		   goto error;
+	   }
+   }
+
+   printf("Writing the firmware of length %lu at %lu... ",
+		(unsigned long) statbuf.st_size,
+		(unsigned long) iplsize);
+   do {
+	   retlen = read(ifd, databuf, 512);
+	   if (retlen < 512)
+	     memset(databuf+retlen, 0xff, 512-retlen);
+	   if (write(ofd, databuf, 512) != 512) {
+		   perror("write");
+		   goto error;
+	   }
+   } while (retlen == 512);
+   printf("Done.\n");
+
+   if (iplbuf != NULL)
+	   free(iplbuf);
+   close(ifd);
+   close(ofd);
+   return 0;
+
+error:
+   if (iplbuf != NULL)
+	   free(iplbuf);
+   close(ifd);
+   close(ofd);
+   return 1;
+}
-- 
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