[U-Boot] [RFC PATCH 05/22] image: Split libfdt code into image-fdt.c
Simon Glass
sjg at chromium.org
Thu Jan 10 15:58:08 CET 2013
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 at chromium.org>
---
common/Makefile | 1 +
common/image-fdt.c | 608 ++++++++++++++++++++++++++++++++++++++++++++++++++++
common/image.c | 566 ------------------------------------------------
3 files changed, 609 insertions(+), 566 deletions(-)
create mode 100644 common/image-fdt.c
diff --git a/common/Makefile b/common/Makefile
index 8208b0b..b688a91 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -223,6 +223,7 @@ COBJS-$(CONFIG_BOUNCE_BUFFER) += bouncebuf.o
COBJS-y += console.o
COBJS-y += dlmalloc.o
COBJS-y += image.o
+COBJS-$(CONFIG_OF_LIBFDT) += image-fdt.o
COBJS-$(CONFIG_FIT) += image-fit.o
COBJS-$(CONFIG_FIT_SIGNATURE) += image-sig.o
COBJS-y += memsize.o
diff --git a/common/image-fdt.c b/common/image-fdt.c
new file mode 100644
index 0000000..1c88a16
--- /dev/null
+++ b/common/image-fdt.c
@@ -0,0 +1,608 @@
+/*
+ * Copyright (c) 2013, Google Inc.
+ *
+ * (C) Copyright 2008 Semihalf
+ *
+ * (C) Copyright 2000-2006
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <fdt_support.h>
+#include <errno.h>
+#include <image.h>
+#include <libfdt.h>
+#include <asm/io.h>
+
+#ifndef CONFIG_SYS_FDT_PAD
+#define CONFIG_SYS_FDT_PAD 0x3000
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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;
+}
+
+/**
+ * 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;
+}
+
+#if defined(CONFIG_FIT)
+/**
+ * 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
+ */
+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
+
+/**
+ * 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;
+ }
+
+ /*
+ * 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;
+}
diff --git a/common/image.c b/common/image.c
index 88172cc..aa2818e 100644
--- a/common/image.c
+++ b/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
--
1.7.7.3
More information about the U-Boot
mailing list