image: Split libfdt code into image-fdt.c
The image file is still very large, and some of the code is only used when libfdt is in use. Move this code into a new file. Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
Tom Rini
parent
87ebee39e9
commit
44d3a3066b
@ -231,6 +231,7 @@ COBJS-$(CONFIG_BOUNCE_BUFFER) += bouncebuf.o
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COBJS-y += console.o
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COBJS-y += dlmalloc.o
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COBJS-y += image.o
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COBJS-$(CONFIG_OF_LIBFDT) += image-fdt.o
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COBJS-$(CONFIG_FIT) += image-fit.o
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COBJS-y += memsize.o
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COBJS-y += stdio.o
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591
common/image-fdt.c
Normal file
591
common/image-fdt.c
Normal file
@ -0,0 +1,591 @@
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/*
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* Copyright (c) 2013, Google Inc.
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*
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* (C) Copyright 2008 Semihalf
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*
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* (C) Copyright 2000-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <fdt_support.h>
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#include <errno.h>
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#include <image.h>
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#include <libfdt.h>
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#include <asm/io.h>
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#ifndef CONFIG_SYS_FDT_PAD
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#define CONFIG_SYS_FDT_PAD 0x3000
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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static void fdt_error(const char *msg)
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{
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puts("ERROR: ");
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puts(msg);
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puts(" - must RESET the board to recover.\n");
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}
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static const image_header_t *image_get_fdt(ulong fdt_addr)
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{
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const image_header_t *fdt_hdr = map_sysmem(fdt_addr, 0);
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image_print_contents(fdt_hdr);
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puts(" Verifying Checksum ... ");
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if (!image_check_hcrc(fdt_hdr)) {
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fdt_error("fdt header checksum invalid");
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return NULL;
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}
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if (!image_check_dcrc(fdt_hdr)) {
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fdt_error("fdt checksum invalid");
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return NULL;
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}
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puts("OK\n");
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if (!image_check_type(fdt_hdr, IH_TYPE_FLATDT)) {
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fdt_error("uImage is not a fdt");
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return NULL;
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}
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if (image_get_comp(fdt_hdr) != IH_COMP_NONE) {
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fdt_error("uImage is compressed");
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return NULL;
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}
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if (fdt_check_header((char *)image_get_data(fdt_hdr)) != 0) {
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fdt_error("uImage data is not a fdt");
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return NULL;
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}
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return fdt_hdr;
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}
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/**
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* boot_fdt_add_mem_rsv_regions - Mark the memreserve sections as unusable
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* @lmb: pointer to lmb handle, will be used for memory mgmt
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* @fdt_blob: pointer to fdt blob base address
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*
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* Adds the memreserve regions in the dtb to the lmb block. Adding the
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* memreserve regions prevents u-boot from using them to store the initrd
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* or the fdt blob.
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*/
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void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
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{
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uint64_t addr, size;
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int i, total;
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if (fdt_check_header(fdt_blob) != 0)
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return;
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total = fdt_num_mem_rsv(fdt_blob);
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for (i = 0; i < total; i++) {
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if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0)
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continue;
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printf(" reserving fdt memory region: addr=%llx size=%llx\n",
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(unsigned long long)addr, (unsigned long long)size);
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lmb_reserve(lmb, addr, size);
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}
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}
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/**
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* boot_relocate_fdt - relocate flat device tree
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* @lmb: pointer to lmb handle, will be used for memory mgmt
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* @of_flat_tree: pointer to a char* variable, will hold fdt start address
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* @of_size: pointer to a ulong variable, will hold fdt length
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*
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* boot_relocate_fdt() allocates a region of memory within the bootmap and
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* relocates the of_flat_tree into that region, even if the fdt is already in
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* the bootmap. It also expands the size of the fdt by CONFIG_SYS_FDT_PAD
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* bytes.
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*
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* of_flat_tree and of_size are set to final (after relocation) values
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*
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* returns:
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* 0 - success
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* 1 - failure
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*/
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int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
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{
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void *fdt_blob = *of_flat_tree;
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void *of_start = NULL;
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char *fdt_high;
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ulong of_len = 0;
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int err;
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int disable_relocation = 0;
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/* nothing to do */
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if (*of_size == 0)
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return 0;
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if (fdt_check_header(fdt_blob) != 0) {
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fdt_error("image is not a fdt");
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goto error;
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}
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/* position on a 4K boundary before the alloc_current */
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/* Pad the FDT by a specified amount */
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of_len = *of_size + CONFIG_SYS_FDT_PAD;
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/* If fdt_high is set use it to select the relocation address */
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fdt_high = getenv("fdt_high");
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if (fdt_high) {
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void *desired_addr = (void *)simple_strtoul(fdt_high, NULL, 16);
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if (((ulong) desired_addr) == ~0UL) {
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/* All ones means use fdt in place */
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of_start = fdt_blob;
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lmb_reserve(lmb, (ulong)of_start, of_len);
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disable_relocation = 1;
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} else if (desired_addr) {
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of_start =
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(void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
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(ulong)desired_addr);
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if (of_start == NULL) {
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puts("Failed using fdt_high value for Device Tree");
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goto error;
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}
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} else {
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of_start =
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(void *)(ulong) lmb_alloc(lmb, of_len, 0x1000);
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}
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} else {
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of_start =
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(void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
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getenv_bootm_mapsize()
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+ getenv_bootm_low());
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}
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if (of_start == NULL) {
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puts("device tree - allocation error\n");
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goto error;
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}
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if (disable_relocation) {
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/*
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* We assume there is space after the existing fdt to use
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* for padding
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*/
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fdt_set_totalsize(of_start, of_len);
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printf(" Using Device Tree in place at %p, end %p\n",
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of_start, of_start + of_len - 1);
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} else {
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debug("## device tree at %p ... %p (len=%ld [0x%lX])\n",
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fdt_blob, fdt_blob + *of_size - 1, of_len, of_len);
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printf(" Loading Device Tree to %p, end %p ... ",
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of_start, of_start + of_len - 1);
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err = fdt_open_into(fdt_blob, of_start, of_len);
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if (err != 0) {
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fdt_error("fdt move failed");
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goto error;
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}
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puts("OK\n");
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}
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*of_flat_tree = of_start;
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*of_size = of_len;
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set_working_fdt_addr(*of_flat_tree);
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return 0;
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error:
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return 1;
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}
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#if defined(CONFIG_FIT)
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/**
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* fit_check_fdt - verify FIT format FDT subimage
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* @fit_hdr: pointer to the FIT header
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* fdt_noffset: FDT subimage node offset within FIT image
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* @verify: data CRC verification flag
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*
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* fit_check_fdt() verifies integrity of the FDT subimage and from
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* specified FIT image.
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*
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* returns:
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* 1, on success
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* 0, on failure
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*/
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static int fit_check_fdt(const void *fit, int fdt_noffset, int verify)
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{
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fit_image_print(fit, fdt_noffset, " ");
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if (verify) {
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puts(" Verifying Hash Integrity ... ");
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if (!fit_image_verify(fit, fdt_noffset)) {
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fdt_error("Bad Data Hash");
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return 0;
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}
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puts("OK\n");
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}
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if (!fit_image_check_type(fit, fdt_noffset, IH_TYPE_FLATDT)) {
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fdt_error("Not a FDT image");
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return 0;
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}
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if (!fit_image_check_comp(fit, fdt_noffset, IH_COMP_NONE)) {
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fdt_error("FDT image is compressed");
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return 0;
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}
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return 1;
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}
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#endif
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/**
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* boot_get_fdt - main fdt handling routine
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* @argc: command argument count
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* @argv: command argument list
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* @images: pointer to the bootm images structure
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* @of_flat_tree: pointer to a char* variable, will hold fdt start address
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* @of_size: pointer to a ulong variable, will hold fdt length
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*
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* boot_get_fdt() is responsible for finding a valid flat device tree image.
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* Curently supported are the following ramdisk sources:
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* - multicomponent kernel/ramdisk image,
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* - commandline provided address of decicated ramdisk image.
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*
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* returns:
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* 0, if fdt image was found and valid, or skipped
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* of_flat_tree and of_size are set to fdt start address and length if
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* fdt image is found and valid
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*
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* 1, if fdt image is found but corrupted
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* of_flat_tree and of_size are set to 0 if no fdt exists
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*/
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int boot_get_fdt(int flag, int argc, char * const argv[],
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bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
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{
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const image_header_t *fdt_hdr;
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ulong fdt_addr;
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char *fdt_blob = NULL;
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ulong image_start, image_data, image_end;
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ulong load_start, load_end;
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void *buf;
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#if defined(CONFIG_FIT)
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void *fit_hdr;
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const char *fit_uname_config = NULL;
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const char *fit_uname_fdt = NULL;
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ulong default_addr;
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int cfg_noffset;
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int fdt_noffset;
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const void *data;
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size_t size;
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#endif
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*of_flat_tree = NULL;
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*of_size = 0;
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if (argc > 3 || genimg_has_config(images)) {
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#if defined(CONFIG_FIT)
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if (argc > 3) {
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/*
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* If the FDT blob comes from the FIT image and the
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* FIT image address is omitted in the command line
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* argument, try to use ramdisk or os FIT image
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* address or default load address.
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*/
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if (images->fit_uname_rd)
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default_addr = (ulong)images->fit_hdr_rd;
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else if (images->fit_uname_os)
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default_addr = (ulong)images->fit_hdr_os;
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else
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default_addr = load_addr;
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if (fit_parse_conf(argv[3], default_addr,
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&fdt_addr, &fit_uname_config)) {
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debug("* fdt: config '%s' from image at 0x%08lx\n",
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fit_uname_config, fdt_addr);
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} else if (fit_parse_subimage(argv[3], default_addr,
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&fdt_addr, &fit_uname_fdt)) {
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debug("* fdt: subimage '%s' from image at 0x%08lx\n",
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fit_uname_fdt, fdt_addr);
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} else
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#endif
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{
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fdt_addr = simple_strtoul(argv[3], NULL, 16);
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debug("* fdt: cmdline image address = 0x%08lx\n",
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fdt_addr);
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}
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#if defined(CONFIG_FIT)
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} else {
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/* use FIT configuration provided in first bootm
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* command argument
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*/
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fdt_addr = map_to_sysmem(images->fit_hdr_os);
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fit_uname_config = images->fit_uname_cfg;
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debug("* fdt: using config '%s' from image at 0x%08lx\n",
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fit_uname_config, fdt_addr);
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/*
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* Check whether configuration has FDT blob defined,
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* if not quit silently.
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*/
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fit_hdr = images->fit_hdr_os;
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cfg_noffset = fit_conf_get_node(fit_hdr,
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fit_uname_config);
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if (cfg_noffset < 0) {
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debug("* fdt: no such config\n");
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return 0;
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}
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fdt_noffset = fit_conf_get_fdt_node(fit_hdr,
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cfg_noffset);
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if (fdt_noffset < 0) {
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debug("* fdt: no fdt in config\n");
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return 0;
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}
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}
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#endif
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debug("## Checking for 'FDT'/'FDT Image' at %08lx\n",
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fdt_addr);
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/* copy from dataflash if needed */
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fdt_addr = genimg_get_image(fdt_addr);
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/*
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* Check if there is an FDT image at the
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* address provided in the second bootm argument
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* check image type, for FIT images get a FIT node.
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*/
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buf = map_sysmem(fdt_addr, 0);
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switch (genimg_get_format(buf)) {
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case IMAGE_FORMAT_LEGACY:
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/* verify fdt_addr points to a valid image header */
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printf("## Flattened Device Tree from Legacy Image at %08lx\n",
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fdt_addr);
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fdt_hdr = image_get_fdt(fdt_addr);
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if (!fdt_hdr)
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goto error;
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/*
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* move image data to the load address,
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* make sure we don't overwrite initial image
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*/
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image_start = (ulong)fdt_hdr;
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image_data = (ulong)image_get_data(fdt_hdr);
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image_end = image_get_image_end(fdt_hdr);
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load_start = image_get_load(fdt_hdr);
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load_end = load_start + image_get_data_size(fdt_hdr);
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if (load_start == image_start ||
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load_start == image_data) {
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fdt_blob = (char *)image_data;
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break;
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}
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if ((load_start < image_end) &&
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(load_end > image_start)) {
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fdt_error("fdt overwritten");
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goto error;
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}
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debug(" Loading FDT from 0x%08lx to 0x%08lx\n",
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image_data, load_start);
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memmove((void *)load_start,
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(void *)image_data,
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image_get_data_size(fdt_hdr));
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fdt_blob = (char *)load_start;
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break;
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case IMAGE_FORMAT_FIT:
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/*
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* This case will catch both: new uImage format
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* (libfdt based) and raw FDT blob (also libfdt
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* based).
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*/
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#if defined(CONFIG_FIT)
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/* check FDT blob vs FIT blob */
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if (fit_check_format(buf)) {
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/*
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* FIT image
|
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*/
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fit_hdr = buf;
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printf("## Flattened Device Tree from FIT Image at %08lx\n",
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fdt_addr);
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|
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if (!fit_uname_fdt) {
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/*
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* no FDT blob image node unit name,
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* try to get config node first. If
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* config unit node name is NULL
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* fit_conf_get_node() will try to
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* find default config node
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*/
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cfg_noffset = fit_conf_get_node(fit_hdr,
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fit_uname_config);
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if (cfg_noffset < 0) {
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fdt_error("Could not find configuration node\n");
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goto error;
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}
|
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fit_uname_config = fdt_get_name(fit_hdr,
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cfg_noffset, NULL);
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printf(" Using '%s' configuration\n",
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fit_uname_config);
|
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|
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fdt_noffset = fit_conf_get_fdt_node(
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fit_hdr,
|
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cfg_noffset);
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fit_uname_fdt = fit_get_name(fit_hdr,
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fdt_noffset, NULL);
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} else {
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/*
|
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* get FDT component image node
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* offset
|
||||
*/
|
||||
fdt_noffset = fit_image_get_node(
|
||||
fit_hdr,
|
||||
fit_uname_fdt);
|
||||
}
|
||||
if (fdt_noffset < 0) {
|
||||
fdt_error("Could not find subimage node\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
printf(" Trying '%s' FDT blob subimage\n",
|
||||
fit_uname_fdt);
|
||||
|
||||
if (!fit_check_fdt(fit_hdr, fdt_noffset,
|
||||
images->verify))
|
||||
goto error;
|
||||
|
||||
/* get ramdisk image data address and length */
|
||||
if (fit_image_get_data(fit_hdr, fdt_noffset,
|
||||
&data, &size)) {
|
||||
fdt_error("Could not find FDT subimage data");
|
||||
goto error;
|
||||
}
|
||||
|
||||
/*
|
||||
* verify that image data is a proper FDT
|
||||
* blob
|
||||
*/
|
||||
if (fdt_check_header((char *)data) != 0) {
|
||||
fdt_error("Subimage data is not a FTD");
|
||||
goto error;
|
||||
}
|
||||
|
||||
/*
|
||||
* move image data to the load address,
|
||||
* make sure we don't overwrite initial image
|
||||
*/
|
||||
image_start = (ulong)fit_hdr;
|
||||
image_end = fit_get_end(fit_hdr);
|
||||
|
||||
if (fit_image_get_load(fit_hdr, fdt_noffset,
|
||||
&load_start) == 0) {
|
||||
load_end = load_start + size;
|
||||
|
||||
if ((load_start < image_end) &&
|
||||
(load_end > image_start)) {
|
||||
fdt_error("FDT overwritten");
|
||||
goto error;
|
||||
}
|
||||
|
||||
printf(" Loading FDT from 0x%08lx to 0x%08lx\n",
|
||||
(ulong)data, load_start);
|
||||
|
||||
memmove((void *)load_start,
|
||||
(void *)data, size);
|
||||
|
||||
fdt_blob = (char *)load_start;
|
||||
} else {
|
||||
fdt_blob = (char *)data;
|
||||
}
|
||||
|
||||
images->fit_hdr_fdt = fit_hdr;
|
||||
images->fit_uname_fdt = fit_uname_fdt;
|
||||
images->fit_noffset_fdt = fdt_noffset;
|
||||
break;
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
/*
|
||||
* FDT blob
|
||||
*/
|
||||
fdt_blob = buf;
|
||||
debug("* fdt: raw FDT blob\n");
|
||||
printf("## Flattened Device Tree blob at %08lx\n",
|
||||
(long)fdt_addr);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
puts("ERROR: Did not find a cmdline Flattened Device Tree\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
printf(" Booting using the fdt blob at 0x%p\n", fdt_blob);
|
||||
|
||||
} else if (images->legacy_hdr_valid &&
|
||||
image_check_type(&images->legacy_hdr_os_copy,
|
||||
IH_TYPE_MULTI)) {
|
||||
ulong fdt_data, fdt_len;
|
||||
|
||||
/*
|
||||
* Now check if we have a legacy multi-component image,
|
||||
* get second entry data start address and len.
|
||||
*/
|
||||
printf("## Flattened Device Tree from multi component Image at %08lX\n",
|
||||
(ulong)images->legacy_hdr_os);
|
||||
|
||||
image_multi_getimg(images->legacy_hdr_os, 2, &fdt_data,
|
||||
&fdt_len);
|
||||
if (fdt_len) {
|
||||
fdt_blob = (char *)fdt_data;
|
||||
printf(" Booting using the fdt at 0x%p\n", fdt_blob);
|
||||
|
||||
if (fdt_check_header(fdt_blob) != 0) {
|
||||
fdt_error("image is not a fdt");
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (fdt_totalsize(fdt_blob) != fdt_len) {
|
||||
fdt_error("fdt size != image size");
|
||||
goto error;
|
||||
}
|
||||
} else {
|
||||
debug("## No Flattened Device Tree\n");
|
||||
return 0;
|
||||
}
|
||||
} else {
|
||||
debug("## No Flattened Device Tree\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
*of_flat_tree = fdt_blob;
|
||||
*of_size = fdt_totalsize(fdt_blob);
|
||||
debug(" of_flat_tree at 0x%08lx size 0x%08lx\n",
|
||||
(ulong)*of_flat_tree, *of_size);
|
||||
|
||||
return 0;
|
||||
|
||||
error:
|
||||
*of_flat_tree = NULL;
|
||||
*of_size = 0;
|
||||
return 1;
|
||||
}
|
||||
566
common/image.c
566
common/image.c
@ -1150,572 +1150,6 @@ error:
|
||||
}
|
||||
#endif /* CONFIG_SYS_BOOT_RAMDISK_HIGH */
|
||||
|
||||
#ifdef CONFIG_OF_LIBFDT
|
||||
static void fdt_error(const char *msg)
|
||||
{
|
||||
puts("ERROR: ");
|
||||
puts(msg);
|
||||
puts(" - must RESET the board to recover.\n");
|
||||
}
|
||||
|
||||
static const image_header_t *image_get_fdt(ulong fdt_addr)
|
||||
{
|
||||
const image_header_t *fdt_hdr = map_sysmem(fdt_addr, 0);
|
||||
|
||||
image_print_contents(fdt_hdr);
|
||||
|
||||
puts(" Verifying Checksum ... ");
|
||||
if (!image_check_hcrc(fdt_hdr)) {
|
||||
fdt_error("fdt header checksum invalid");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (!image_check_dcrc(fdt_hdr)) {
|
||||
fdt_error("fdt checksum invalid");
|
||||
return NULL;
|
||||
}
|
||||
puts("OK\n");
|
||||
|
||||
if (!image_check_type(fdt_hdr, IH_TYPE_FLATDT)) {
|
||||
fdt_error("uImage is not a fdt");
|
||||
return NULL;
|
||||
}
|
||||
if (image_get_comp(fdt_hdr) != IH_COMP_NONE) {
|
||||
fdt_error("uImage is compressed");
|
||||
return NULL;
|
||||
}
|
||||
if (fdt_check_header((char *)image_get_data(fdt_hdr)) != 0) {
|
||||
fdt_error("uImage data is not a fdt");
|
||||
return NULL;
|
||||
}
|
||||
return fdt_hdr;
|
||||
}
|
||||
|
||||
/**
|
||||
* fit_check_fdt - verify FIT format FDT subimage
|
||||
* @fit_hdr: pointer to the FIT header
|
||||
* fdt_noffset: FDT subimage node offset within FIT image
|
||||
* @verify: data CRC verification flag
|
||||
*
|
||||
* fit_check_fdt() verifies integrity of the FDT subimage and from
|
||||
* specified FIT image.
|
||||
*
|
||||
* returns:
|
||||
* 1, on success
|
||||
* 0, on failure
|
||||
*/
|
||||
#if defined(CONFIG_FIT)
|
||||
static int fit_check_fdt(const void *fit, int fdt_noffset, int verify)
|
||||
{
|
||||
fit_image_print(fit, fdt_noffset, " ");
|
||||
|
||||
if (verify) {
|
||||
puts(" Verifying Hash Integrity ... ");
|
||||
if (!fit_image_verify(fit, fdt_noffset)) {
|
||||
fdt_error("Bad Data Hash");
|
||||
return 0;
|
||||
}
|
||||
puts("OK\n");
|
||||
}
|
||||
|
||||
if (!fit_image_check_type(fit, fdt_noffset, IH_TYPE_FLATDT)) {
|
||||
fdt_error("Not a FDT image");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!fit_image_check_comp(fit, fdt_noffset, IH_COMP_NONE)) {
|
||||
fdt_error("FDT image is compressed");
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
#endif /* CONFIG_FIT */
|
||||
|
||||
#ifndef CONFIG_SYS_FDT_PAD
|
||||
#define CONFIG_SYS_FDT_PAD 0x3000
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_OF_LIBFDT)
|
||||
/**
|
||||
* boot_fdt_add_mem_rsv_regions - Mark the memreserve sections as unusable
|
||||
* @lmb: pointer to lmb handle, will be used for memory mgmt
|
||||
* @fdt_blob: pointer to fdt blob base address
|
||||
*
|
||||
* Adds the memreserve regions in the dtb to the lmb block. Adding the
|
||||
* memreserve regions prevents u-boot from using them to store the initrd
|
||||
* or the fdt blob.
|
||||
*/
|
||||
void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
|
||||
{
|
||||
uint64_t addr, size;
|
||||
int i, total;
|
||||
|
||||
if (fdt_check_header(fdt_blob) != 0)
|
||||
return;
|
||||
|
||||
total = fdt_num_mem_rsv(fdt_blob);
|
||||
for (i = 0; i < total; i++) {
|
||||
if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0)
|
||||
continue;
|
||||
printf(" reserving fdt memory region: addr=%llx size=%llx\n",
|
||||
(unsigned long long)addr, (unsigned long long)size);
|
||||
lmb_reserve(lmb, addr, size);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* boot_relocate_fdt - relocate flat device tree
|
||||
* @lmb: pointer to lmb handle, will be used for memory mgmt
|
||||
* @of_flat_tree: pointer to a char* variable, will hold fdt start address
|
||||
* @of_size: pointer to a ulong variable, will hold fdt length
|
||||
*
|
||||
* boot_relocate_fdt() allocates a region of memory within the bootmap and
|
||||
* relocates the of_flat_tree into that region, even if the fdt is already in
|
||||
* the bootmap. It also expands the size of the fdt by CONFIG_SYS_FDT_PAD
|
||||
* bytes.
|
||||
*
|
||||
* of_flat_tree and of_size are set to final (after relocation) values
|
||||
*
|
||||
* returns:
|
||||
* 0 - success
|
||||
* 1 - failure
|
||||
*/
|
||||
int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
|
||||
{
|
||||
void *fdt_blob = *of_flat_tree;
|
||||
void *of_start = NULL;
|
||||
char *fdt_high;
|
||||
ulong of_len = 0;
|
||||
int err;
|
||||
int disable_relocation = 0;
|
||||
|
||||
/* nothing to do */
|
||||
if (*of_size == 0)
|
||||
return 0;
|
||||
|
||||
if (fdt_check_header(fdt_blob) != 0) {
|
||||
fdt_error("image is not a fdt");
|
||||
goto error;
|
||||
}
|
||||
|
||||
/* position on a 4K boundary before the alloc_current */
|
||||
/* Pad the FDT by a specified amount */
|
||||
of_len = *of_size + CONFIG_SYS_FDT_PAD;
|
||||
|
||||
/* If fdt_high is set use it to select the relocation address */
|
||||
fdt_high = getenv("fdt_high");
|
||||
if (fdt_high) {
|
||||
void *desired_addr = (void *)simple_strtoul(fdt_high, NULL, 16);
|
||||
|
||||
if (((ulong) desired_addr) == ~0UL) {
|
||||
/* All ones means use fdt in place */
|
||||
of_start = fdt_blob;
|
||||
lmb_reserve(lmb, (ulong)of_start, of_len);
|
||||
disable_relocation = 1;
|
||||
} else if (desired_addr) {
|
||||
of_start =
|
||||
(void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
|
||||
(ulong)desired_addr);
|
||||
if (of_start == NULL) {
|
||||
puts("Failed using fdt_high value for Device Tree");
|
||||
goto error;
|
||||
}
|
||||
} else {
|
||||
of_start =
|
||||
(void *)(ulong) lmb_alloc(lmb, of_len, 0x1000);
|
||||
}
|
||||
} else {
|
||||
of_start =
|
||||
(void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
|
||||
getenv_bootm_mapsize()
|
||||
+ getenv_bootm_low());
|
||||
}
|
||||
|
||||
if (of_start == NULL) {
|
||||
puts("device tree - allocation error\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (disable_relocation) {
|
||||
/* We assume there is space after the existing fdt to use for padding */
|
||||
fdt_set_totalsize(of_start, of_len);
|
||||
printf(" Using Device Tree in place at %p, end %p\n",
|
||||
of_start, of_start + of_len - 1);
|
||||
} else {
|
||||
debug("## device tree at %p ... %p (len=%ld [0x%lX])\n",
|
||||
fdt_blob, fdt_blob + *of_size - 1, of_len, of_len);
|
||||
|
||||
printf(" Loading Device Tree to %p, end %p ... ",
|
||||
of_start, of_start + of_len - 1);
|
||||
|
||||
err = fdt_open_into(fdt_blob, of_start, of_len);
|
||||
if (err != 0) {
|
||||
fdt_error("fdt move failed");
|
||||
goto error;
|
||||
}
|
||||
puts("OK\n");
|
||||
}
|
||||
|
||||
*of_flat_tree = of_start;
|
||||
*of_size = of_len;
|
||||
|
||||
set_working_fdt_addr(*of_flat_tree);
|
||||
return 0;
|
||||
|
||||
error:
|
||||
return 1;
|
||||
}
|
||||
#endif /* CONFIG_OF_LIBFDT */
|
||||
|
||||
/**
|
||||
* boot_get_fdt - main fdt handling routine
|
||||
* @argc: command argument count
|
||||
* @argv: command argument list
|
||||
* @images: pointer to the bootm images structure
|
||||
* @of_flat_tree: pointer to a char* variable, will hold fdt start address
|
||||
* @of_size: pointer to a ulong variable, will hold fdt length
|
||||
*
|
||||
* boot_get_fdt() is responsible for finding a valid flat device tree image.
|
||||
* Curently supported are the following ramdisk sources:
|
||||
* - multicomponent kernel/ramdisk image,
|
||||
* - commandline provided address of decicated ramdisk image.
|
||||
*
|
||||
* returns:
|
||||
* 0, if fdt image was found and valid, or skipped
|
||||
* of_flat_tree and of_size are set to fdt start address and length if
|
||||
* fdt image is found and valid
|
||||
*
|
||||
* 1, if fdt image is found but corrupted
|
||||
* of_flat_tree and of_size are set to 0 if no fdt exists
|
||||
*/
|
||||
int boot_get_fdt(int flag, int argc, char * const argv[],
|
||||
bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
|
||||
{
|
||||
const image_header_t *fdt_hdr;
|
||||
ulong fdt_addr;
|
||||
char *fdt_blob = NULL;
|
||||
ulong image_start, image_data, image_end;
|
||||
ulong load_start, load_end;
|
||||
void *buf;
|
||||
#if defined(CONFIG_FIT)
|
||||
void *fit_hdr;
|
||||
const char *fit_uname_config = NULL;
|
||||
const char *fit_uname_fdt = NULL;
|
||||
ulong default_addr;
|
||||
int cfg_noffset;
|
||||
int fdt_noffset;
|
||||
const void *data;
|
||||
size_t size;
|
||||
#endif
|
||||
|
||||
*of_flat_tree = NULL;
|
||||
*of_size = 0;
|
||||
|
||||
if (argc > 3 || genimg_has_config(images)) {
|
||||
#if defined(CONFIG_FIT)
|
||||
if (argc > 3) {
|
||||
/*
|
||||
* If the FDT blob comes from the FIT image and the
|
||||
* FIT image address is omitted in the command line
|
||||
* argument, try to use ramdisk or os FIT image
|
||||
* address or default load address.
|
||||
*/
|
||||
if (images->fit_uname_rd)
|
||||
default_addr = (ulong)images->fit_hdr_rd;
|
||||
else if (images->fit_uname_os)
|
||||
default_addr = (ulong)images->fit_hdr_os;
|
||||
else
|
||||
default_addr = load_addr;
|
||||
|
||||
if (fit_parse_conf(argv[3], default_addr,
|
||||
&fdt_addr, &fit_uname_config)) {
|
||||
debug("* fdt: config '%s' from image at "
|
||||
"0x%08lx\n",
|
||||
fit_uname_config, fdt_addr);
|
||||
} else if (fit_parse_subimage(argv[3], default_addr,
|
||||
&fdt_addr, &fit_uname_fdt)) {
|
||||
debug("* fdt: subimage '%s' from image at "
|
||||
"0x%08lx\n",
|
||||
fit_uname_fdt, fdt_addr);
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
fdt_addr = simple_strtoul(argv[3], NULL, 16);
|
||||
debug("* fdt: cmdline image address = "
|
||||
"0x%08lx\n",
|
||||
fdt_addr);
|
||||
}
|
||||
#if defined(CONFIG_FIT)
|
||||
} else {
|
||||
/* use FIT configuration provided in first bootm
|
||||
* command argument
|
||||
*/
|
||||
fdt_addr = map_to_sysmem(images->fit_hdr_os);
|
||||
fit_uname_config = images->fit_uname_cfg;
|
||||
debug("* fdt: using config '%s' from image "
|
||||
"at 0x%08lx\n",
|
||||
fit_uname_config, fdt_addr);
|
||||
|
||||
/*
|
||||
* Check whether configuration has FDT blob defined,
|
||||
* if not quit silently.
|
||||
*/
|
||||
fit_hdr = images->fit_hdr_os;
|
||||
cfg_noffset = fit_conf_get_node(fit_hdr,
|
||||
fit_uname_config);
|
||||
if (cfg_noffset < 0) {
|
||||
debug("* fdt: no such config\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
fdt_noffset = fit_conf_get_fdt_node(fit_hdr,
|
||||
cfg_noffset);
|
||||
if (fdt_noffset < 0) {
|
||||
debug("* fdt: no fdt in config\n");
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
debug("## Checking for 'FDT'/'FDT Image' at %08lx\n",
|
||||
fdt_addr);
|
||||
|
||||
/* copy from dataflash if needed */
|
||||
fdt_addr = genimg_get_image(fdt_addr);
|
||||
|
||||
/*
|
||||
* Check if there is an FDT image at the
|
||||
* address provided in the second bootm argument
|
||||
* check image type, for FIT images get a FIT node.
|
||||
*/
|
||||
buf = map_sysmem(fdt_addr, 0);
|
||||
switch (genimg_get_format(buf)) {
|
||||
case IMAGE_FORMAT_LEGACY:
|
||||
/* verify fdt_addr points to a valid image header */
|
||||
printf("## Flattened Device Tree from Legacy Image "
|
||||
"at %08lx\n",
|
||||
fdt_addr);
|
||||
fdt_hdr = image_get_fdt(fdt_addr);
|
||||
if (!fdt_hdr)
|
||||
goto error;
|
||||
|
||||
/*
|
||||
* move image data to the load address,
|
||||
* make sure we don't overwrite initial image
|
||||
*/
|
||||
image_start = (ulong)fdt_hdr;
|
||||
image_data = (ulong)image_get_data(fdt_hdr);
|
||||
image_end = image_get_image_end(fdt_hdr);
|
||||
|
||||
load_start = image_get_load(fdt_hdr);
|
||||
load_end = load_start + image_get_data_size(fdt_hdr);
|
||||
|
||||
if (load_start == image_start ||
|
||||
load_start == image_data) {
|
||||
fdt_blob = (char *)image_data;
|
||||
break;
|
||||
}
|
||||
|
||||
if ((load_start < image_end) && (load_end > image_start)) {
|
||||
fdt_error("fdt overwritten");
|
||||
goto error;
|
||||
}
|
||||
|
||||
debug(" Loading FDT from 0x%08lx to 0x%08lx\n",
|
||||
image_data, load_start);
|
||||
|
||||
memmove((void *)load_start,
|
||||
(void *)image_data,
|
||||
image_get_data_size(fdt_hdr));
|
||||
|
||||
fdt_blob = (char *)load_start;
|
||||
break;
|
||||
case IMAGE_FORMAT_FIT:
|
||||
/*
|
||||
* This case will catch both: new uImage format
|
||||
* (libfdt based) and raw FDT blob (also libfdt
|
||||
* based).
|
||||
*/
|
||||
#if defined(CONFIG_FIT)
|
||||
/* check FDT blob vs FIT blob */
|
||||
if (fit_check_format(buf)) {
|
||||
/*
|
||||
* FIT image
|
||||
*/
|
||||
fit_hdr = buf;
|
||||
printf("## Flattened Device Tree from FIT "
|
||||
"Image at %08lx\n",
|
||||
fdt_addr);
|
||||
|
||||
if (!fit_uname_fdt) {
|
||||
/*
|
||||
* no FDT blob image node unit name,
|
||||
* try to get config node first. If
|
||||
* config unit node name is NULL
|
||||
* fit_conf_get_node() will try to
|
||||
* find default config node
|
||||
*/
|
||||
cfg_noffset = fit_conf_get_node(fit_hdr,
|
||||
fit_uname_config);
|
||||
|
||||
if (cfg_noffset < 0) {
|
||||
fdt_error("Could not find "
|
||||
"configuration "
|
||||
"node\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
fit_uname_config = fdt_get_name(fit_hdr,
|
||||
cfg_noffset, NULL);
|
||||
printf(" Using '%s' configuration\n",
|
||||
fit_uname_config);
|
||||
|
||||
fdt_noffset = fit_conf_get_fdt_node(
|
||||
fit_hdr,
|
||||
cfg_noffset);
|
||||
fit_uname_fdt = fit_get_name(fit_hdr,
|
||||
fdt_noffset, NULL);
|
||||
} else {
|
||||
/* get FDT component image node offset */
|
||||
fdt_noffset = fit_image_get_node(
|
||||
fit_hdr,
|
||||
fit_uname_fdt);
|
||||
}
|
||||
if (fdt_noffset < 0) {
|
||||
fdt_error("Could not find subimage "
|
||||
"node\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
printf(" Trying '%s' FDT blob subimage\n",
|
||||
fit_uname_fdt);
|
||||
|
||||
if (!fit_check_fdt(fit_hdr, fdt_noffset,
|
||||
images->verify))
|
||||
goto error;
|
||||
|
||||
/* get ramdisk image data address and length */
|
||||
if (fit_image_get_data(fit_hdr, fdt_noffset,
|
||||
&data, &size)) {
|
||||
fdt_error("Could not find FDT "
|
||||
"subimage data");
|
||||
goto error;
|
||||
}
|
||||
|
||||
/* verift that image data is a proper FDT blob */
|
||||
if (fdt_check_header((char *)data) != 0) {
|
||||
fdt_error("Subimage data is not a FTD");
|
||||
goto error;
|
||||
}
|
||||
|
||||
/*
|
||||
* move image data to the load address,
|
||||
* make sure we don't overwrite initial image
|
||||
*/
|
||||
image_start = (ulong)fit_hdr;
|
||||
image_end = fit_get_end(fit_hdr);
|
||||
|
||||
if (fit_image_get_load(fit_hdr, fdt_noffset,
|
||||
&load_start) == 0) {
|
||||
load_end = load_start + size;
|
||||
|
||||
if ((load_start < image_end) &&
|
||||
(load_end > image_start)) {
|
||||
fdt_error("FDT overwritten");
|
||||
goto error;
|
||||
}
|
||||
|
||||
printf(" Loading FDT from 0x%08lx "
|
||||
"to 0x%08lx\n",
|
||||
(ulong)data,
|
||||
load_start);
|
||||
|
||||
memmove((void *)load_start,
|
||||
(void *)data, size);
|
||||
|
||||
fdt_blob = (char *)load_start;
|
||||
} else {
|
||||
fdt_blob = (char *)data;
|
||||
}
|
||||
|
||||
images->fit_hdr_fdt = fit_hdr;
|
||||
images->fit_uname_fdt = fit_uname_fdt;
|
||||
images->fit_noffset_fdt = fdt_noffset;
|
||||
break;
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
/*
|
||||
* FDT blob
|
||||
*/
|
||||
fdt_blob = buf;
|
||||
debug("* fdt: raw FDT blob\n");
|
||||
printf("## Flattened Device Tree blob at %08lx\n",
|
||||
(long)fdt_addr);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
puts("ERROR: Did not find a cmdline Flattened Device "
|
||||
"Tree\n");
|
||||
goto error;
|
||||
}
|
||||
|
||||
printf(" Booting using the fdt blob at 0x%p\n", fdt_blob);
|
||||
|
||||
} else if (images->legacy_hdr_valid &&
|
||||
image_check_type(&images->legacy_hdr_os_copy,
|
||||
IH_TYPE_MULTI)) {
|
||||
|
||||
ulong fdt_data, fdt_len;
|
||||
|
||||
/*
|
||||
* Now check if we have a legacy multi-component image,
|
||||
* get second entry data start address and len.
|
||||
*/
|
||||
printf("## Flattened Device Tree from multi "
|
||||
"component Image at %08lX\n",
|
||||
(ulong)images->legacy_hdr_os);
|
||||
|
||||
image_multi_getimg(images->legacy_hdr_os, 2, &fdt_data,
|
||||
&fdt_len);
|
||||
if (fdt_len) {
|
||||
|
||||
fdt_blob = (char *)fdt_data;
|
||||
printf(" Booting using the fdt at 0x%p\n", fdt_blob);
|
||||
|
||||
if (fdt_check_header(fdt_blob) != 0) {
|
||||
fdt_error("image is not a fdt");
|
||||
goto error;
|
||||
}
|
||||
|
||||
if (fdt_totalsize(fdt_blob) != fdt_len) {
|
||||
fdt_error("fdt size != image size");
|
||||
goto error;
|
||||
}
|
||||
} else {
|
||||
debug("## No Flattened Device Tree\n");
|
||||
return 0;
|
||||
}
|
||||
} else {
|
||||
debug("## No Flattened Device Tree\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
*of_flat_tree = fdt_blob;
|
||||
*of_size = fdt_totalsize(fdt_blob);
|
||||
debug(" of_flat_tree at 0x%08lx size 0x%08lx\n",
|
||||
(ulong)*of_flat_tree, *of_size);
|
||||
|
||||
return 0;
|
||||
|
||||
error:
|
||||
*of_flat_tree = NULL;
|
||||
*of_size = 0;
|
||||
return 1;
|
||||
}
|
||||
#endif /* CONFIG_OF_LIBFDT */
|
||||
|
||||
#ifdef CONFIG_SYS_BOOT_GET_CMDLINE
|
||||
/**
|
||||
* boot_get_cmdline - allocate and initialize kernel cmdline
|
||||
|
||||
Loading…
Reference in New Issue
Block a user