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Add support for passing initrd information via flat device tree

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Patch by Kumar Gala 11 Jan 2006
This commit is contained in:
Kumar Gala 2006-01-11 16:41:35 -06:00
parent c2871f0380
commit e559a6901a
4 changed files with 22 additions and 10 deletions
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3
CHANGELOG
View file

@ -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

16
common/cmd_bootm.c
View file

@ -819,7 +819,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
(*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 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
/*
* 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
}

11
common/ft_build.c
View file

@ -163,7 +163,7 @@ void ft_add_rsvmap(struct ft_cxt *cxt, u64 physaddr, u64 size)
((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 @@ static const struct {
};
#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 @@ void ft_setup(void *blob, int size, bd_t * bd)
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 @@ void ft_setup(void *blob, int size, bd_t * bd)
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

2
include/ft_build.h
View file

@ -57,7 +57,7 @@ void ft_prop_int(struct ft_cxt *cxt, const char *name, int val);
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);