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authorWolfgang Denk <wd@pollux.denx.de>2005-10-13 01:45:54 +0200
committerWolfgang Denk <wd@pollux.denx.de>2005-10-13 01:45:54 +0200
commitf57f70aab9d5ed7964f2f791829a2d780b788a7e (patch)
treea618aa9c21d7e9ee9cb79161f0085edaa5f22672 /common/cmd_bootm.c
parent3df5bea0b0bddc196bf952c51d1dd54d966b82ba (diff)
Support passing of OF flat trees to the kernel.
Patch by Pantelis Antoniou, 04 Sep 2005
Diffstat (limited to 'common/cmd_bootm.c')
-rw-r--r--common/cmd_bootm.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index ab6ccbb07c..ee1b5c1c24 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -34,6 +34,10 @@
#include <environment.h>
#include <asm/byteorder.h>
+#ifdef CONFIG_OF_FLAT_TREE
+#include <ft_build.h>
+#endif
+
/*cmd_boot.c*/
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
@@ -489,6 +493,11 @@ fixup_silent_linux ()
}
#endif /* CONFIG_SILENT_CONSOLE */
+#ifdef CONFIG_OF_FLAT_TREE
+extern const unsigned char oftree_dtb[];
+extern const unsigned int oftree_dtb_len;
+#endif
+
#ifdef CONFIG_PPC
static void
do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
@@ -511,6 +520,9 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
bd_t *kbd;
void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
image_header_t *hdr = &header;
+#ifdef CONFIG_OF_FLAT_TREE
+ char *of_flat_tree;
+#endif
if ((s = getenv ("initrd_high")) != NULL) {
/* a value of "no" or a similar string will act like 0,
@@ -776,15 +788,26 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
initrd_end = 0;
}
+#ifdef CONFIG_OF_FLAT_TREE
+ if (initrd_start == 0)
+ of_flat_tree = (char *)(((ulong)kbd - OF_FLAT_TREE_MAX_SIZE -
+ sizeof(bd_t)) & ~0xF);
+ else
+ of_flat_tree = (char *)((initrd_start - OF_FLAT_TREE_MAX_SIZE -
+ sizeof(bd_t)) & ~0xF);
+#endif
debug ("## Transferring control to Linux (at address %08lx) ...\n",
(ulong)kernel);
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
@@ -794,6 +817,25 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
* r7: End of command line string
*/
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
+
+#else
+ ft_setup(of_flat_tree, OF_FLAT_TREE_MAX_SIZE, kbd);
+ /* ft_dump_blob(of_flat_tree); */
+
+#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
+ unlock_ram_in_cache();
+#endif
+ /*
+ * Linux Kernel Parameters:
+ * r3: ptr to OF flat tree, followed by the 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) ((bd_t *)of_flat_tree, initrd_start, initrd_end, cmd_start, cmd_end);
+
+#endif
}
#endif /* CONFIG_PPC */