--- /dev/null
+/*
+ * Copyright (c) 2013, Google Inc.
+ *
+ * (C) Copyright 2008 Semihalf
+ *
+ * (C) Copyright 2000-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#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;
+}
+
+/**
+ * boot_get_fdt - main fdt handling routine
+ * @argc: command argument count
+ * @argv: command argument list
+ * @arch: architecture (IH_ARCH_...)
+ * @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[], uint8_t arch,
+ 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, load_end;
+ void *buf;
+#if defined(CONFIG_FIT)
+ const char *fit_uname_config = images->fit_uname_cfg;
+ const char *fit_uname_fdt = NULL;
+ ulong default_addr;
+ int fdt_noffset;
+#endif
+ const char *select = NULL;
+
+ *of_flat_tree = NULL;
+ *of_size = 0;
+
+ if (argc > 2)
+ select = argv[2];
+ if (select || genimg_has_config(images)) {
+#if defined(CONFIG_FIT)
+ if (select) {
+ /*
+ * 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(select, 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(select, 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(select, 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);
+ fdt_noffset = fit_get_node_from_config(images,
+ FIT_FDT_PROP,
+ fdt_addr);
+ if (fdt_noffset == -ENOLINK)
+ return 0;
+ else if (fdt_noffset < 0)
+ return 1;
+ }
+#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 = image_get_load(fdt_hdr);
+ load_end = load + image_get_data_size(fdt_hdr);
+
+ if (load == image_start ||
+ load == image_data) {
+ fdt_blob = (char *)image_data;
+ break;
+ }
+
+ if ((load < 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);
+
+ memmove((void *)load,
+ (void *)image_data,
+ image_get_data_size(fdt_hdr));
+
+ fdt_addr = load;
+ 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)) {
+ ulong load, len;
+
+ fdt_noffset = fit_image_load(images,
+ FIT_FDT_PROP,
+ fdt_addr, &fit_uname_fdt,
+ &fit_uname_config,
+ arch, IH_TYPE_FLATDT,
+ BOOTSTAGE_ID_FIT_FDT_START,
+ FIT_LOAD_OPTIONAL, &load, &len);
+
+ images->fit_hdr_fdt = map_sysmem(fdt_addr, 0);
+ images->fit_uname_fdt = fit_uname_fdt;
+ images->fit_noffset_fdt = fdt_noffset;
+ fdt_addr = load;
+ break;
+ } else
+#endif
+ {
+ /*
+ * FDT blob
+ */
+ 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 %#08lx\n", fdt_addr);
+ fdt_blob = map_sysmem(fdt_addr, 0);
+ } 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;
+}
+
+/*
+ * 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;
+}
projects / karo-tx-uboot.git / blobdiff