From 13d06981a9829c9edcfd6f9f582d216fbaed95e5 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 8 May 2013 08:06:01 +0000 Subject: image: Add device tree setup to image library This seems to be a common function for several architectures, so create a common function rather than duplicating the code in each arch. Also make an attempt to avoid introducing #ifdefs in the new code, partly by removing useless #ifdefs around function declarations in the image.h header. Signed-off-by: Simon Glass --- common/image-fdt.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) (limited to 'common/image-fdt.c') diff --git a/common/image-fdt.c b/common/image-fdt.c index 8e8f35c1cf..158c9cfbf5 100644 --- a/common/image-fdt.c +++ b/common/image-fdt.c @@ -589,3 +589,65 @@ error: *of_size = 0; return 1; } + +/* + * Verify the device tree. + * + * This function is called after all device tree fix-ups have been enacted, + * so that the final device tree can be verified. The definition of "verified" + * is up to the specific implementation. However, it generally means that the + * addresses of some of the devices in the device tree are compared with the + * actual addresses at which U-Boot has placed them. + * + * Returns 1 on success, 0 on failure. If 0 is returned, U-boot will halt the + * boot process. + */ +__weak int ft_verify_fdt(void *fdt) +{ + return 1; +} + +__weak int arch_fixup_memory_node(void *blob) +{ + return 0; +} + +int image_setup_libfdt(bootm_headers_t *images, void *blob, + int of_size, struct lmb *lmb) +{ + ulong *initrd_start = &images->initrd_start; + ulong *initrd_end = &images->initrd_end; + int ret; + + if (fdt_chosen(blob, 1) < 0) { + puts("ERROR: /chosen node create failed"); + puts(" - must RESET the board to recover.\n"); + return -1; + } + arch_fixup_memory_node(blob); + if (IMAAGE_OF_BOARD_SETUP) + ft_board_setup(blob, gd->bd); + fdt_fixup_ethernet(blob); + + /* Delete the old LMB reservation */ + lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob, + (phys_size_t)fdt_totalsize(blob)); + + ret = fdt_resize(blob); + if (ret < 0) + return ret; + of_size = ret; + + if (*initrd_start && *initrd_end) { + of_size += FDT_RAMDISK_OVERHEAD; + fdt_set_totalsize(blob, of_size); + } + /* Create a new LMB reservation */ + lmb_reserve(lmb, (ulong)blob, of_size); + + fdt_initrd(blob, *initrd_start, *initrd_end, 1); + if (!ft_verify_fdt(blob)) + return -1; + + return 0; +} -- cgit v1.2.1