Add support for passing initrd information via flat device tree
Patch by Kumar Gala 11 Jan 2006
diff --git a/CHANGELOG b/CHANGELOG
index 7c20143..9b64a02 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,9 @@
Changes since U-Boot 1.1.4:
======================================================================
+* Add support for passing initrd information via flat device tree
+ Patch by Kumar Gala 11 Jan 2006
+
* Added OF_STDOUT_PATH and OF_SOC
OF_STDOUT_PATH specifies the path to the device the kernel can use
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 8599a49..9562dbe 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -819,7 +819,7 @@
(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
#else
- ft_setup(of_flat_tree, OF_FLAT_TREE_MAX_SIZE, kbd);
+ ft_setup(of_flat_tree, OF_FLAT_TREE_MAX_SIZE, kbd, initrd_start, initrd_end);
/* ft_dump_blob(of_flat_tree); */
#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
@@ -828,12 +828,16 @@
/*
* 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
+ * r4: physical pointer to the kernel itself
+ * r5: NULL
+ * r6: NULL
+ * r7: NULL
*/
- (*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end, cmd_start, cmd_end);
+ if (getenv("disable_of") != NULL)
+ (*kernel) ((bd_t *)of_flat_tree, initrd_start, initrd_end,
+ cmd_start, cmd_end);
+ else
+ (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
#endif
}
diff --git a/common/ft_build.c b/common/ft_build.c
index 7a9a40a..9e9c906 100644
--- a/common/ft_build.c
+++ b/common/ft_build.c
@@ -163,7 +163,7 @@
((u64 *) cxt->pres)[0] = cpu_to_be64(physaddr); /* phys = 0, size = 0, terminate */
((u64 *) cxt->pres)[1] = cpu_to_be64(size);
- cxt->pres += 18; /* advance */
+ cxt->pres += 16; /* advance */
((u64 *) cxt->pres)[0] = 0; /* phys = 0, size = 0, terminate */
((u64 *) cxt->pres)[1] = 0;
@@ -577,7 +577,7 @@
};
#endif
-void ft_setup(void *blob, int size, bd_t * bd)
+void ft_setup(void *blob, int size, bd_t * bd, ulong initrd_start, ulong initrd_end)
{
u32 *p;
int len;
@@ -602,7 +602,8 @@
ft_begin(&cxt, blob, size);
- /* fs_add_rsvmap not used */
+ if (initrd_start && initrd_end)
+ ft_add_rsvmap(&cxt, initrd_start, initrd_end - initrd_start + 1);
ft_begin_tree(&cxt);
@@ -645,6 +646,10 @@
ft_prop_str(&cxt, "name", "chosen");
ft_prop_str(&cxt, "bootargs", getenv("bootargs"));
ft_prop_int(&cxt, "linux,platform", 0x600); /* what is this? */
+ if (initrd_start && initrd_end) {
+ ft_prop_int(&cxt, "linux,initrd-start", initrd_start);
+ ft_prop_int(&cxt, "linux,initrd-end", initrd_end);
+ }
#ifdef OF_STDOUT_PATH
ft_prop_str(&cxt, "linux,stdout-path", OF_STDOUT_PATH);
#endif
diff --git a/include/ft_build.h b/include/ft_build.h
index a276867..47ca575 100644
--- a/include/ft_build.h
+++ b/include/ft_build.h
@@ -57,7 +57,7 @@
void ft_begin(struct ft_cxt *cxt, void *blob, int max_size);
void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size);
-void ft_setup(void *blob, int size, bd_t * bd);
+void ft_setup(void *blob, int size, bd_t * bd, ulong initrd_start, ulong initrd_end);
void ft_dump_blob(const void *bphp);
void ft_merge_blob(struct ft_cxt *cxt, void *blob);