X-Git-Url: http://git.ozlabs.org/?p=yaboot.git;a=blobdiff_plain;f=util%2Faddnote.c;h=741bf8a0b76cef0b5e579bd44ad6d5167e9e17f4;hp=23022a71da16bca7fff1a555a69dc4f19dfebcad;hb=1cd0d9449cea60545406aa593c493ec90687ff6d;hpb=da7857367944c983abf98f956241dcc614b2f453

diff --git a/util/addnote.c b/util/addnote.c
index 23022a7..741bf8a 100644
--- a/util/addnote.c
+++ b/util/addnote.c
@@ -1,24 +1,34 @@
 /*
- * Program to hack in a PT_NOTE program header entry in an ELF file.
- * This is needed for OF on RS/6000s to load an image correctly.
- * Note that OF needs a program header entry for the note, not an
- * ELF section.
+ *  addnote.c - Program to hack in a PT_NOTE program header entry in an ELF file.
+ *             This is needed for OF on RS/6000s to load an image correctly.
+ *             Note that OF needs a program header entry for the note, not an
+ *             ELF section.
  *
- * Copyright 2000 Paul Mackerras.
+ *  Copyright 2000 Paul Mackerras.
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
  *
- * Usage: addnote zImage
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
+/* Usage: addnote zImage */
+
 #include <stdio.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <string.h>
 
+/* CHRP note section */
 char arch[] = "PowerPC";
 
 #define N_DESCR	6
@@ -31,6 +41,29 @@ unsigned int descr[N_DESCR] = {
      0x4000,			/* load-base */
 };
 
+/* RPA note section */
+char rpaname[] = "IBM,RPA-Client-Config";
+
+/*
+ * Note: setting ignore_my_client_config *should* mean that OF ignores
+ * all the other fields, but there is a firmware bug which means that
+ * it looks at the splpar field at least.  So these values need to be
+ * reasonable.
+ */
+#define N_RPA_DESCR	8
+unsigned int rpanote[N_RPA_DESCR] = {
+     0,				/* lparaffinity */
+     64,			/* min_rmo_size */
+     0,				/* min_rmo_percent */
+     40,			/* max_pft_size */
+     1,				/* splpar */
+     -1,			/* min_load */
+     0,				/* new_mem_def */
+     1,				/* ignore_my_client_config */
+};
+
+#define ROUNDUP(len)	(((len) + 3) & ~3)
+
 unsigned char buf[512];
 
 #define GET_16BE(off)	((buf[off] << 8) + (buf[(off)+1]))
@@ -68,7 +101,7 @@ main(int ac, char **av)
 {
      int fd, n, i;
      int ph, ps, np;
-     int nnote, ns;
+     int nnote, nnote2, ns;
 
      if (ac != 2) {
 	  fprintf(stderr, "Usage: %s elf-file\n", av[0]);
@@ -80,7 +113,8 @@ main(int ac, char **av)
 	  exit(1);
      }
 
-     nnote = strlen(arch) + 1 + (N_DESCR + 3) * 4;
+     nnote = 12 + ROUNDUP(strlen(arch) + 1) + sizeof(descr);
+     nnote2 = 12 + ROUNDUP(strlen(rpaname) + 1) + sizeof(rpanote);
 
      n = read(fd, buf, sizeof(buf));
      if (n < 0) {
@@ -103,7 +137,7 @@ main(int ac, char **av)
      np = GET_16BE(E_PHNUM);
      if (ph < E_HSIZE || ps < PH_HSIZE || np < 1)
 	  goto notelf;
-     if (ph + (np + 1) * ps + nnote > n)
+     if (ph + (np + 2) * ps + nnote + nnote2 > n)
 	  goto nospace;
 
      for (i = 0; i < np; ++i) {
@@ -116,12 +150,12 @@ main(int ac, char **av)
      }
 
      /* XXX check that the area we want to use is all zeroes */
-     for (i = 0; i < ps + nnote; ++i)
+     for (i = 0; i < 2 * ps + nnote + nnote2; ++i)
 	  if (buf[ph + i] != 0)
 	       goto nospace;
 
      /* fill in the program header entry */
-     ns = ph + ps;
+     ns = ph + 2 * ps;
      PUT_32BE(ph + PH_TYPE, PT_NOTE);
      PUT_32BE(ph + PH_OFFSET, ns);
      PUT_32BE(ph + PH_FILESZ, nnote);
@@ -133,11 +167,26 @@ main(int ac, char **av)
      PUT_32BE(ns + 8, 0x1275);
      strcpy(&buf[ns + 12], arch);
      ns += 12 + strlen(arch) + 1;
-     for (i = 0; i < N_DESCR; ++i)
-	  PUT_32BE(ns + i * 4, descr[i]);
+     for (i = 0; i < N_DESCR; ++i, ns += 4)
+	  PUT_32BE(ns, descr[i]);
+
+     /* fill in the second program header entry and the RPA note area */
+     ph += ps;
+     PUT_32BE(ph + PH_TYPE, PT_NOTE);
+     PUT_32BE(ph + PH_OFFSET, ns);
+     PUT_32BE(ph + PH_FILESZ, nnote2);
+
+     /* fill in the note area we point to */
+     PUT_32BE(ns, strlen(rpaname) + 1);
+     PUT_32BE(ns + 4, sizeof(rpanote));
+     PUT_32BE(ns + 8, 0x12759999);
+     strcpy(&buf[ns + 12], rpaname);
+     ns += 12 + ROUNDUP(strlen(rpaname) + 1);
+     for (i = 0; i < N_RPA_DESCR; ++i, ns += 4)
+	  PUT_32BE(ns, rpanote[i]);
 
      /* Update the number of program headers */
-     PUT_16BE(E_PHNUM, np + 1);
+     PUT_16BE(E_PHNUM, np + 2);
 
      /* write back */
      lseek(fd, (long) 0, SEEK_SET);