mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-22 09:58:52 +09:00
![Peng Fan](/assets/img/avatar_default.png)
If condition of "(load == image_start || load == image_data)" is true, should use "fdt_addr = load;", but not "fdt_blob = (char *)image_data;", or fdt_blob will be overridden by "fdt_blob = map_sysmem(fdt_addr, 0);" at the end of the switch case. Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Cc: Simon Glass <sjg@chromium.org> Cc: Joe Hershberger <joe.hershberger@ni.com> Cc: Max Krummenacher <max.krummenacher@toradex.com> Cc: Marek Vasut <marex@denx.de> Cc: Suriyan Ramasami <suriyan.r@gmail.com> Cc: Paul Kocialkowski <contact@paulk.fr> Cc: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
535 lines
13 KiB
C
535 lines
13 KiB
C
/*
|
|
* 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 <mapmem.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");
|
|
}
|
|
|
|
#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
|
|
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((void *)image_get_data(fdt_hdr)) != 0) {
|
|
fdt_error("uImage data is not a fdt");
|
|
return NULL;
|
|
}
|
|
return fdt_hdr;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* 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((ulong)*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)
|
|
{
|
|
#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
|
|
const image_header_t *fdt_hdr;
|
|
ulong load, load_end;
|
|
ulong image_start, image_data, image_end;
|
|
#endif
|
|
ulong fdt_addr;
|
|
char *fdt_blob = NULL;
|
|
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;
|
|
int ok_no_fdt = 0;
|
|
|
|
*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)) {
|
|
#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
|
|
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 no_fdt;
|
|
|
|
/*
|
|
* 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_addr = load;
|
|
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;
|
|
#endif
|
|
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,
|
|
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 no_fdt;
|
|
}
|
|
|
|
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");
|
|
goto no_fdt;
|
|
}
|
|
} else {
|
|
debug("## No Flattened Device Tree\n");
|
|
goto no_fdt;
|
|
}
|
|
|
|
*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;
|
|
|
|
no_fdt:
|
|
ok_no_fdt = 1;
|
|
error:
|
|
*of_flat_tree = NULL;
|
|
*of_size = 0;
|
|
if (!select && ok_no_fdt) {
|
|
debug("Continuing to boot without FDT\n");
|
|
return 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_fdt(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 = -EPERM;
|
|
int fdt_ret;
|
|
|
|
if (fdt_root(blob) < 0) {
|
|
printf("ERROR: root node setup failed\n");
|
|
goto err;
|
|
}
|
|
if (fdt_chosen(blob) < 0) {
|
|
printf("ERROR: /chosen node create failed\n");
|
|
goto err;
|
|
}
|
|
if (arch_fixup_fdt(blob) < 0) {
|
|
printf("ERROR: arch-specific fdt fixup failed\n");
|
|
goto err;
|
|
}
|
|
if (IMAGE_OF_BOARD_SETUP) {
|
|
fdt_ret = ft_board_setup(blob, gd->bd);
|
|
if (fdt_ret) {
|
|
printf("ERROR: board-specific fdt fixup failed: %s\n",
|
|
fdt_strerror(fdt_ret));
|
|
goto err;
|
|
}
|
|
}
|
|
if (IMAGE_OF_SYSTEM_SETUP) {
|
|
fdt_ret = ft_system_setup(blob, gd->bd);
|
|
if (fdt_ret) {
|
|
printf("ERROR: system-specific fdt fixup failed: %s\n",
|
|
fdt_strerror(fdt_ret));
|
|
goto err;
|
|
}
|
|
}
|
|
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_shrink_to_minimum(blob);
|
|
if (ret < 0)
|
|
goto err;
|
|
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);
|
|
if (!ft_verify_fdt(blob))
|
|
goto err;
|
|
|
|
#if defined(CONFIG_SOC_KEYSTONE)
|
|
if (IMAGE_OF_BOARD_SETUP)
|
|
ft_board_setup_ex(blob, gd->bd);
|
|
#endif
|
|
|
|
return 0;
|
|
err:
|
|
printf(" - must RESET the board to recover.\n\n");
|
|
|
|
return ret;
|
|
}
|