mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 19:10:13 +00:00
185f812c41
Sphinx expects Return: and not @return to indicate a return value. find . -name '*.c' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; find . -name '*.h' -exec \ sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \; Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
157 lines
4.3 KiB
C
157 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2018 Linaro Ltd.
|
|
* Sam Protsenko <semen.protsenko@linaro.org>
|
|
*/
|
|
|
|
#include <image-android-dt.h>
|
|
#include <dt_table.h>
|
|
#include <common.h>
|
|
#include <linux/libfdt.h>
|
|
#include <mapmem.h>
|
|
|
|
/**
|
|
* Check if image header is correct.
|
|
*
|
|
* @param hdr_addr Start address of DT image
|
|
* Return: true if header is correct or false if header is incorrect
|
|
*/
|
|
bool android_dt_check_header(ulong hdr_addr)
|
|
{
|
|
const struct dt_table_header *hdr;
|
|
u32 magic;
|
|
|
|
hdr = map_sysmem(hdr_addr, sizeof(*hdr));
|
|
magic = fdt32_to_cpu(hdr->magic);
|
|
unmap_sysmem(hdr);
|
|
|
|
return magic == DT_TABLE_MAGIC;
|
|
}
|
|
|
|
/**
|
|
* Get the address of FDT (dtb or dtbo) in memory by its index in image.
|
|
*
|
|
* @param hdr_addr Start address of DT image
|
|
* @param index Index of desired FDT in image (starting from 0)
|
|
* @param[out] addr If not NULL, will contain address to specified FDT
|
|
* @param[out] size If not NULL, will contain size of specified FDT
|
|
*
|
|
* Return: true on success or false on error
|
|
*/
|
|
bool android_dt_get_fdt_by_index(ulong hdr_addr, u32 index, ulong *addr,
|
|
u32 *size)
|
|
{
|
|
const struct dt_table_header *hdr;
|
|
const struct dt_table_entry *e;
|
|
u32 entry_count, entries_offset, entry_size;
|
|
ulong e_addr;
|
|
u32 dt_offset, dt_size;
|
|
|
|
hdr = map_sysmem(hdr_addr, sizeof(*hdr));
|
|
entry_count = fdt32_to_cpu(hdr->dt_entry_count);
|
|
entries_offset = fdt32_to_cpu(hdr->dt_entries_offset);
|
|
entry_size = fdt32_to_cpu(hdr->dt_entry_size);
|
|
unmap_sysmem(hdr);
|
|
|
|
if (index >= entry_count) {
|
|
printf("Error: index >= dt_entry_count (%u >= %u)\n", index,
|
|
entry_count);
|
|
return false;
|
|
}
|
|
|
|
e_addr = hdr_addr + entries_offset + index * entry_size;
|
|
e = map_sysmem(e_addr, sizeof(*e));
|
|
dt_offset = fdt32_to_cpu(e->dt_offset);
|
|
dt_size = fdt32_to_cpu(e->dt_size);
|
|
unmap_sysmem(e);
|
|
|
|
if (addr)
|
|
*addr = hdr_addr + dt_offset;
|
|
if (size)
|
|
*size = dt_size;
|
|
|
|
return true;
|
|
}
|
|
|
|
#if !defined(CONFIG_SPL_BUILD)
|
|
static void android_dt_print_fdt_info(const struct fdt_header *fdt)
|
|
{
|
|
u32 fdt_size;
|
|
int root_node_off;
|
|
const char *compatible;
|
|
|
|
root_node_off = fdt_path_offset(fdt, "/");
|
|
if (root_node_off < 0) {
|
|
printf("Error: Root node not found\n");
|
|
return;
|
|
}
|
|
|
|
fdt_size = fdt_totalsize(fdt);
|
|
compatible = fdt_getprop(fdt, root_node_off, "compatible",
|
|
NULL);
|
|
|
|
printf(" (FDT)size = %d\n", fdt_size);
|
|
printf(" (FDT)compatible = %s\n",
|
|
compatible ? compatible : "(unknown)");
|
|
}
|
|
|
|
/**
|
|
* Print information about DT image structure.
|
|
*
|
|
* @param hdr_addr Start address of DT image
|
|
*/
|
|
void android_dt_print_contents(ulong hdr_addr)
|
|
{
|
|
const struct dt_table_header *hdr;
|
|
u32 entry_count, entries_offset, entry_size;
|
|
u32 i;
|
|
|
|
hdr = map_sysmem(hdr_addr, sizeof(*hdr));
|
|
entry_count = fdt32_to_cpu(hdr->dt_entry_count);
|
|
entries_offset = fdt32_to_cpu(hdr->dt_entries_offset);
|
|
entry_size = fdt32_to_cpu(hdr->dt_entry_size);
|
|
|
|
/* Print image header info */
|
|
printf("dt_table_header:\n");
|
|
printf(" magic = %08x\n", fdt32_to_cpu(hdr->magic));
|
|
printf(" total_size = %d\n", fdt32_to_cpu(hdr->total_size));
|
|
printf(" header_size = %d\n", fdt32_to_cpu(hdr->header_size));
|
|
printf(" dt_entry_size = %d\n", entry_size);
|
|
printf(" dt_entry_count = %d\n", entry_count);
|
|
printf(" dt_entries_offset = %d\n", entries_offset);
|
|
printf(" page_size = %d\n", fdt32_to_cpu(hdr->page_size));
|
|
printf(" version = %d\n", fdt32_to_cpu(hdr->version));
|
|
|
|
unmap_sysmem(hdr);
|
|
|
|
/* Print image entries info */
|
|
for (i = 0; i < entry_count; ++i) {
|
|
const ulong e_addr = hdr_addr + entries_offset + i * entry_size;
|
|
const struct dt_table_entry *e;
|
|
const struct fdt_header *fdt;
|
|
u32 dt_offset, dt_size;
|
|
u32 j;
|
|
|
|
e = map_sysmem(e_addr, sizeof(*e));
|
|
dt_offset = fdt32_to_cpu(e->dt_offset);
|
|
dt_size = fdt32_to_cpu(e->dt_size);
|
|
|
|
printf("dt_table_entry[%d]:\n", i);
|
|
printf(" dt_size = %d\n", dt_size);
|
|
printf(" dt_offset = %d\n", dt_offset);
|
|
printf(" id = %08x\n", fdt32_to_cpu(e->id));
|
|
printf(" rev = %08x\n", fdt32_to_cpu(e->rev));
|
|
for (j = 0; j < 4; ++j) {
|
|
printf(" custom[%d] = %08x\n", j,
|
|
fdt32_to_cpu(e->custom[j]));
|
|
}
|
|
|
|
unmap_sysmem(e);
|
|
|
|
/* Print FDT info for this entry */
|
|
fdt = map_sysmem(hdr_addr + dt_offset, sizeof(*fdt));
|
|
android_dt_print_fdt_info(fdt);
|
|
unmap_sysmem(fdt);
|
|
}
|
|
}
|
|
#endif
|