[U-Boot-Users] [PATCH] Allow CONFIG_OF_FLAT_TREE to boot a non-arch/powerpc kernel

Grant Likely
2006-10-29T22:54:09Z

This patch allows an arch/ppc kernel to be booted by just passing 1 or 2
arguments to bootm. It removes the getenv("disable_of") test that used
to be used for this purpose.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---
common/cmd_bootm.c | 54 +++++++++++++++++++++------------------------------
1 files changed, 22 insertions(+), 32 deletions(-)

diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 3091a58..7aae8a6 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -833,10 +833,6 @@ #endif
printf ("ERROR: flat device tree size does not agree with image\n");
return;
}
-
- } else if (getenv("disable_of") == NULL) {
- printf ("ERROR: bootm needs flat device tree as third argument\n");
- return;
}
#endif
if (!data) {
@@ -913,23 +909,11 @@ #endif /* CONFIG_HW_WATCHDOG || CONFIG_W

SHOW_BOOT_PROGRESS (15);

-#ifndef CONFIG_OF_FLAT_TREE
-
#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
unlock_ram_in_cache();
#endif

- /*
- * Linux Kernel Parameters:
- * r3: ptr to board info data
- * r4: initrd_start or 0 if no initrd
- * r5: initrd_end - unused if r4 is 0
- * r6: Start of command line string
- * r7: End of command line string
- */
- (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
-
-#else /* CONFIG_OF_FLAT_TREE */
+#ifdef CONFIG_OF_FLAT_TREE
/* move of_flat_tree if needed */
if (of_data) {
ulong of_start, of_len;
@@ -948,30 +932,36 @@ #else /* CONFIG_OF_FLAT_TREE */
of_start, of_start + of_len - 1);
memmove ((void *)of_start, (void *)of_data, of_len);
}
+#endif

- ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
- /* ft_dump_blob(of_flat_tree); */
-
-#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
- unlock_ram_in_cache();
+ /*
+ * Linux Kernel Parameters (passing board info data):
+ * r3: ptr to board info data
+ * r4: initrd_start or 0 if no initrd
+ * r5: initrd_end - unused if r4 is 0
+ * r6: Start of command line string
+ * r7: End of command line string
+ */
+#ifdef CONFIG_OF_FLAT_TREE
+ if (!of_flat_tree) /* no device tree; boot old style */
#endif
+ (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
+ /* does not return */
+
+#ifdef CONFIG_OF_FLAT_TREE
/*
- * Linux Kernel Parameters:
+ * Linux Kernel Parameters (passing device tree):
* r3: ptr to OF flat tree, followed by the board info data
* r4: physical pointer to the kernel itself
* r5: NULL
* r6: NULL
* r7: NULL
*/
- if (getenv("disable_of") != NULL)
- (*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end,
- cmd_start, cmd_end);
- else {
- ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
- /* ft_dump_blob(of_flat_tree); */
- (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
- }
-#endif /* CONFIG_OF_FLAT_TREE */
+ ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
+ /* ft_dump_blob(of_flat_tree); */
+
+ (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
+#endif
}
#endif /* CONFIG_PPC */

--
1.4.3.rc2.g0503