Das U-Boot: Universal Boot Loader

diff --git a/cpu/mpc8xx/commproc.c b/cpu/mpc8xx/commproc.c
new file mode 100644 (file)
index 0000000..62a4458
--- /dev/null
+++ b/cpu/mpc8xx/commproc.c
@@ -0,0 +1,112 @@
+/*
+ * (C) Copyright 2000-2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 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
+ */
+
+#include <common.h>
+#include <commproc.h>
+
+#ifdef CFG_ALLOC_DPRAM
+
+int dpram_init (void)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       /* Reclaim the DP memory for our use. */
+       gd->dp_alloc_base = CPM_DATAONLY_BASE;
+       gd->dp_alloc_top  = CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE;
+
+       return (0);
+}
+
+/* Allocate some memory from the dual ported ram.  We may want to
+ * enforce alignment restrictions, but right now everyone is a good
+ * citizen.
+ */
+uint dpram_alloc (uint size)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+       uint addr = gd->dp_alloc_base;
+
+       if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top)
+               return (CPM_DP_NOSPACE);
+
+       gd->dp_alloc_base += size;
+
+       return addr;
+}
+
+uint dpram_base (void)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       return gd->dp_alloc_base;
+}
+
+/* Allocate some memory from the dual ported ram.  We may want to
+ * enforce alignment restrictions, but right now everyone is a good
+ * citizen.
+ */
+uint dpram_alloc_align (uint size, uint align)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       uint addr, mask = align - 1;
+
+       addr = (gd->dp_alloc_base + mask) & ~mask;
+
+       if ((addr + size) >= gd->dp_alloc_top)
+               return (CPM_DP_NOSPACE);
+
+       gd->dp_alloc_base = addr + size;
+
+       return addr;
+}
+
+uint dpram_base_align (uint align)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       uint mask = align - 1;
+
+       return (gd->dp_alloc_base + mask) & ~mask;
+}
+#endif /* CFG_ALLOC_DPRAM */
+
+#ifdef CONFIG_POST
+
+void post_word_store (ulong a)
+{
+       volatile void *save_addr =
+               ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
+
+       *(volatile ulong *) save_addr = a;
+}
+
+ulong post_word_load (void)
+{
+       volatile void *save_addr =
+               ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
+
+       return *(volatile ulong *) save_addr;
+}
+
+#endif /* CONFIG_POST */

diff --git a/post/post.c b/post/post.c
new file mode 100644 (file)
index 0000000..4f4b72f
--- /dev/null
+++ b/post/post.c
@@ -0,0 +1,318 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 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
+ */
+
+#include <common.h>
+#include <console.h>
+#include <watchdog.h>
+#include <post.h>
+
+#ifdef CONFIG_POST
+
+#define POST_MAX_NUMBER                32
+
+#define BOOTMODE_MAGIC 0xDEAD0000
+
+void post_bootmode_init (void)
+{
+       int bootmode = post_bootmode_get (0);
+
+       if (bootmode == 0) {
+               bootmode = POST_POWERON;
+       } else if (bootmode == POST_POWERON) {
+               bootmode = POST_POWERNORMAL;
+       } else {
+               return;
+       }
+
+       post_word_store (BOOTMODE_MAGIC | bootmode);
+}
+
+int post_bootmode_get (unsigned int *last_test)
+{
+       unsigned long word = post_word_load ();
+       int bootmode;
+
+       if ((word & 0xFFFF0000) != BOOTMODE_MAGIC) {
+               return 0;
+       }
+
+       bootmode = word & 0xFF;
+
+       if (last_test && (bootmode & POST_POWERTEST)) {
+               *last_test = (word >> 8) & 0xFF;
+       }
+
+       return bootmode;
+}
+
+void post_bootmode_clear (void)
+{
+       post_word_store (0);
+}
+
+static void post_bootmode_test_on (unsigned int last_test)
+{
+       unsigned long word = post_word_load ();
+
+       word |= POST_POWERTEST;
+
+       word |= (last_test & 0xFF) << 8;
+
+       post_word_store (word);
+}
+
+static void post_bootmode_test_off (void)
+{
+       unsigned long word = post_word_load ();
+
+       word &= ~POST_POWERTEST;
+
+       post_word_store (word);
+}
+
+static void post_get_flags (int *test_flags)
+{
+       int flag[] = { POST_POWERON, POST_POWERNORMAL, POST_POWERFAIL };
+       char *var[] = { "post_poweron", "post_normal", "post_shutdown" };
+       int varnum = sizeof (var) / sizeof (var[0]);
+       char list[128];                 /* long enough for POST list */
+       char *name;
+       char *s;
+       int last;
+       int i, j;
+
+       for (j = 0; j < post_list_size; j++) {
+               test_flags[j] = post_list[j].flags;
+       }
+
+       for (i = 0; i < varnum; i++) {
+               if (getenv_r (var[i], list, sizeof (list)) <= 0)
+                       continue;
+
+               for (j = 0; j < post_list_size; j++) {
+                       test_flags[j] &= ~flag[i];
+               }
+
+               last = 0;
+               name = list;
+               while (!last) {
+                       while (*name && *name == ' ')
+                               name++;
+                       if (*name == 0)
+                               break;
+                       s = name + 1;
+                       while (*s && *s != ' ')
+                               s++;
+                       if (*s == 0)
+                               last = 1;
+                       else
+                               *s = 0;
+
+                       for (j = 0; j < post_list_size; j++) {
+                               if (strcmp (post_list[j].cmd, name) == 0) {
+                                       test_flags[j] |= flag[i];
+                                       break;
+                               }
+                       }
+
+                       if (j == post_list_size) {
+                               printf ("No such test: %s\n", name);
+                       }
+
+                       name = s + 1;
+               }
+       }
+}
+
+static int post_run_single (struct post_test *test,
+                               int test_flags, int flags, unsigned int i)
+{
+       if ((flags & test_flags & POST_ALWAYS) &&
+               (flags & test_flags & POST_MEM)) {
+               WATCHDOG_RESET ();
+
+               if (!(flags & POST_REBOOT)) {
+                       if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
+                               post_bootmode_test_on (i);
+                       }
+
+                       post_log ("START %s\n", test->cmd);
+               }
+
+               if ((*test->test) (flags) != 0)
+                       post_log ("FAILED\n");
+               else
+                       post_log ("PASSED\n");
+
+               if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
+                       post_bootmode_test_off ();
+               }
+
+               return 0;
+       } else {
+               return -1;
+       }
+}
+
+int post_run (char *name, int flags)
+{
+       unsigned int i;
+       int test_flags[POST_MAX_NUMBER];
+
+       post_get_flags (test_flags);
+
+       if (name == NULL) {
+               unsigned int last;
+
+               if (post_bootmode_get (&last) & POST_POWERTEST) {
+                       if (last < post_list_size &&
+                               (flags & test_flags[last] & POST_ALWAYS) &&
+                               (flags & test_flags[last] & POST_MEM)) {
+
+                               post_run_single (post_list + last, test_flags[last],
+                                                                flags | POST_REBOOT, last);
+
+                               for (i = last + 1; i < post_list_size; i++) {
+                                       post_run_single (post_list + i, test_flags[i],
+                                                                        flags, i);
+                               }
+                       }
+               } else {
+                       for (i = 0; i < post_list_size; i++) {
+                               post_run_single (post_list + i, test_flags[i], flags,
+                                                                i);
+                       }
+               }
+
+               return 0;
+       } else {
+               for (i = 0; i < post_list_size; i++) {
+                       if (strcmp (post_list[i].cmd, name) == 0)
+                               break;
+               }
+
+               if (i < post_list_size) {
+                       return post_run_single (post_list + i,
+                                               test_flags[i],
+                                               flags, i);
+               } else {
+                       return -1;
+               }
+       }
+}
+
+static int post_info_single (struct post_test *test, int full)
+{
+       if (test->flags & POST_MANUAL) {
+               if (full)
+                       printf ("%s - %s\n"
+                               "  %s\n", test->cmd, test->name, test->desc);
+               else
+                       printf ("  %-15s - %s\n", test->cmd, test->name);
+
+               return 0;
+       } else {
+               return -1;
+       }
+}
+
+int post_info (char *name)
+{
+       unsigned int i;
+
+       if (name == NULL) {
+               for (i = 0; i < post_list_size; i++) {
+                       post_info_single (post_list + i, 0);
+               }
+
+               return 0;
+       } else {
+               for (i = 0; i < post_list_size; i++) {
+                       if (strcmp (post_list[i].cmd, name) == 0)
+                               break;
+               }
+
+               if (i < post_list_size) {
+                       return post_info_single (post_list + i, 1);
+               } else {
+                       return -1;
+               }
+       }
+}
+
+int post_log (char *format, ...)
+{
+       va_list args;
+       uint i;
+       char printbuffer[CFG_PBSIZE];
+
+       va_start (args, format);
+
+       /* For this to work, printbuffer must be larger than
+        * anything we ever want to print.
+        */
+       i = vsprintf (printbuffer, format, args);
+       va_end (args);
+
+       /* Send to the stdout file */
+       puts (printbuffer);
+
+       return 0;
+}
+
+void post_reloc (void)
+{
+       DECLARE_GLOBAL_DATA_PTR;
+
+       unsigned int i;
+
+       /*
+        * We have to relocate the test table manually
+        */
+       for (i = 0; i < post_list_size; i++) {
+               ulong addr;
+               struct post_test *test = post_list + i;
+
+               if (test->name) {
+                       addr = (ulong) (test->name) + gd->reloc_off;
+                       test->name = (char *) addr;
+               }
+
+               if (test->cmd) {
+                       addr = (ulong) (test->cmd) + gd->reloc_off;
+                       test->cmd = (char *) addr;
+               }
+
+               if (test->desc) {
+                       addr = (ulong) (test->desc) + gd->reloc_off;
+                       test->desc = (char *) addr;
+               }
+
+               if (test->test) {
+                       addr = (ulong) (test->test) + gd->reloc_off;
+                       test->test = (int (*)(int flags)) addr;
+               }
+       }
+}
+
+#endif /* CONFIG_POST */