Doing the fdt before the ramdisk allows us to grow the fdt w/o concern however it does mean we have to go in and fixup the initrd info since we don't know where it will be.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- lib_ppc/bootm.c | 39 +++++++++++++++++++++++++++++++++++---- 1 files changed, 35 insertions(+), 4 deletions(-)
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c index 5158ccc..99d32eb 100644 --- a/lib_ppc/bootm.c +++ b/lib_ppc/bootm.c @@ -71,6 +71,7 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, bd_t *kbd; void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
+ int ret; int has_of = 0;
#if defined(CONFIG_OF_LIBFDT) @@ -121,9 +122,6 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
rd_len = rd_data_end - rd_data_start;
- alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len, - sp_limit, get_sp (), &initrd_start, &initrd_end); - #if defined(CONFIG_OF_LIBFDT) /* find flattened device tree */ alloc_current = get_fdt (alloc_current, @@ -134,7 +132,8 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, * if the user wants it (the logic is in the subroutines). */ if (of_flat_tree) { - if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) { + /* pass in dummy initrd info, we'll fix up later */ + if (fdt_chosen(of_flat_tree, rd_data_start, rd_data_end, 0) < 0) { fdt_error ("/chosen node create failed"); do_reset (cmdtp, flag, argc, argv); } @@ -157,6 +156,38 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, } #endif /* CONFIG_OF_LIBFDT */
+ alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len, + sp_limit, get_sp (), &initrd_start, &initrd_end); + +#if defined(CONFIG_OF_LIBFDT) + /* fixup the initrd now that we know where it should be */ + if ((of_flat_tree) && (initrd_start && initrd_end)) { + uint64_t addr, size; + int total = fdt_num_mem_rsv(of_flat_tree); + int j; + + /* Look for the dummy entry and delete it */ + for (j = 0; j < total; j++) { + fdt_get_mem_rsv(of_flat_tree, j, &addr, &size); + if (addr == rd_data_start) { + fdt_del_mem_rsv(of_flat_tree, j); + break; + } + } + + ret = fdt_add_mem_rsv(of_flat_tree, initrd_start, + initrd_end - initrd_start + 1); + if (ret < 0) { + printf("fdt_chosen: %s\n", fdt_strerror(ret)); + do_reset (cmdtp, flag, argc, argv); + } + + do_fixup_by_path_u32(of_flat_tree, "/chosen", + "linux,initrd-start", initrd_start, 0); + do_fixup_by_path_u32(of_flat_tree, "/chosen", + "linux,initrd-end", initrd_end, 0); + } +#endif debug ("## Transferring control to Linux (at address %08lx) ...\n", (ulong)kernel);