android13/u-boot/arch/arm/mach-rockchip/fit.c

472 lines
10 KiB
C

/*
* (C) Copyright 2019 Rockchip Electronics Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <boot_rkimg.h>
#include <image.h>
#include <malloc.h>
#include <sysmem.h>
#include <asm/arch/fit.h>
#include <asm/arch/resource_img.h>
DECLARE_GLOBAL_DATA_PTR;
#define FIT_PLACEHOLDER_ADDR 0xffffff00
/*
* Must use args '-E -p' for mkimage to generate FIT image, 4K as max assumption.
*/
#define FIT_FDT_MAX_SIZE SZ_4K
static int fit_is_ext_type(const void *fit)
{
return fdt_totalsize(fit) < FIT_FDT_MAX_SIZE;
}
static int fit_is_signed(const void *fit, const void *sig_blob)
{
return fdt_subnode_offset(sig_blob, 0, FIT_SIG_NODENAME) < 0 ? 0 : 1;
}
static inline int fit_image_addr_is_placeholder(ulong addr)
{
return (addr & 0xffffff00) == FIT_PLACEHOLDER_ADDR;
}
static int fit_sig_require_conf(const void *fit, const void *sig_blob)
{
const char *required;
int sig_node;
int noffset;
sig_node = fdt_subnode_offset(sig_blob, 0, FIT_SIG_NODENAME);
if (sig_node < 0)
return 0;
fdt_for_each_subnode(noffset, sig_blob, sig_node) {
required = fdt_getprop(sig_blob, noffset, "required", NULL);
if (required && !strcmp(required, "conf"))
return 1;
}
return 0;
}
int fit_default_conf_get_node(const void *fit, const char *prop_name)
{
int conf_noffset;
conf_noffset = fit_conf_get_node(fit, NULL); /* NULL for default conf */
if (conf_noffset < 0)
return conf_noffset;
return fit_conf_get_prop_node(fit, conf_noffset, prop_name);
}
int fix_image_set_addr(const void *fit, const char *prop_name,
ulong old, ulong new)
{
int noffset;
/* do not fix if verified-boot */
if (!fit_image_addr_is_placeholder(old) ||
fit_sig_require_conf(fit, gd_fdt_blob()))
return 0;
noffset = fit_default_conf_get_node(fit, prop_name);
if (noffset < 0)
return noffset;
/* optional */
fit_image_set_entry(fit, noffset, new);
return fit_image_set_load(fit, noffset, new);
}
static int fdt_image_get_offset_size(const void *fit, const char *prop_name,
int *offset, int *size)
{
int sz, offs;
int noffset;
int ret;
noffset = fit_default_conf_get_node(fit, prop_name);
if (noffset < 0)
return noffset;
ret = fit_image_get_data_size(fit, noffset, &sz);
if (ret)
return ret;
ret = fit_image_get_data_position(fit, noffset, &offs);
if (!ret)
offs -= fdt_totalsize(fit);
else
ret = fit_image_get_data_offset(fit, noffset, &offs);
*offset = offs;
*size = sz;
return ret;
}
static int fdt_image_get_load(const void *fit, const char *prop_name,
ulong *load)
{
int noffset;
noffset = fit_default_conf_get_node(fit, prop_name);
if (noffset < 0)
return noffset;
return fit_image_get_load(fit, noffset, load);
}
static int fit_image_get_param(const void *fit, const char *prop_name,
ulong *load, int *offset, int *size)
{
int ret;
ret = fdt_image_get_offset_size(fit, prop_name, offset, size);
if (ret < 0)
return ret;
return fdt_image_get_load(fit, prop_name, load);
}
static void *fit_get_blob(struct blk_desc *dev_desc,
disk_partition_t *out_part,
bool verify)
{
__maybe_unused int conf_noffset;
disk_partition_t part;
char *part_name = PART_BOOT;
void *fit, *fdt;
int blk_num;
#ifndef CONFIG_ANDROID_AB
if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY)
part_name = PART_RECOVERY;
#endif
if (part_get_info_by_name(dev_desc, part_name, &part) < 0) {
FIT_I("No %s partition\n", part_name);
return NULL;
}
*out_part = part;
blk_num = DIV_ROUND_UP(sizeof(struct fdt_header), dev_desc->blksz);
fdt = memalign(ARCH_DMA_MINALIGN, blk_num * dev_desc->blksz);
if (!fdt)
return NULL;
if (blk_dread(dev_desc, part.start, blk_num, fdt) != blk_num) {
debug("Failed to read fdt header\n");
goto fail;
}
if (fdt_check_header(fdt)) {
debug("No fdt header\n");
goto fail;
}
if (!fit_is_ext_type(fdt)) {
debug("Not external type\n");
goto fail;
}
blk_num = DIV_ROUND_UP(fdt_totalsize(fdt), dev_desc->blksz);
fit = memalign(ARCH_DMA_MINALIGN, blk_num * dev_desc->blksz);
if (!fit) {
debug("No memory\n");
goto fail;
}
if (blk_dread(dev_desc, part.start, blk_num, fit) != blk_num) {
free(fit);
debug("Failed to read fit blob\n");
goto fail;
}
#ifdef CONFIG_FIT_SIGNATURE
if (!verify)
return fit;
conf_noffset = fit_conf_get_node(fit, NULL); /* NULL for default conf */
if (conf_noffset < 0)
goto fail;
printf("%s: ", fdt_get_name(fit, conf_noffset, NULL));
if (fit_config_verify(fit, conf_noffset)) {
puts("\n");
/* don't remove this failure handle */
run_command("download", 0);
hang();
}
puts("\n");
#endif
return fit;
fail:
free(fdt);
return NULL;
}
static int fit_image_fixup_alloc(const void *fit, const char *prop_name,
const char *addr_name, enum memblk_id mem)
{
ulong load, addr;
int offset, size = 0;
int ret;
addr = env_get_ulong(addr_name, 16, 0);
if (!addr)
return -EINVAL;
ret = fit_image_get_param(fit, prop_name, &load, &offset, &size);
if (ret)
return (ret == -FDT_ERR_NOTFOUND) ? 0 : ret;
if (!size)
return 0;
ret = fix_image_set_addr(fit, prop_name, load, addr);
if (ret)
return ret;
if (!sysmem_alloc_base(mem, (phys_addr_t)addr,
ALIGN(size, RK_BLK_SIZE)))
return -ENOMEM;
return 0;
}
int fit_image_pre_process(const void *fit)
{
int ret;
/* free for fit_image_fixup_alloc(FIT_FDT_PROP) to re-alloc */
if ((gd->flags & GD_FLG_KDTB_READY) && !gd->fdt_blob_kern)
sysmem_free((phys_addr_t)gd->fdt_blob);
ret = fit_image_fixup_alloc(fit, FIT_FDT_PROP,
"fdt_addr_r", MEM_FDT);
if (ret < 0)
return ret;
ret = fit_image_fixup_alloc(fit, FIT_KERNEL_PROP,
"kernel_addr_r", MEM_KERNEL);
if (ret < 0)
return ret;
return fit_image_fixup_alloc(fit, FIT_RAMDISK_PROP,
"ramdisk_addr_r", MEM_RAMDISK);
}
int fit_image_fail_process(const void *fit)
{
ulong raddr, kaddr, faddr;
raddr = env_get_ulong("ramdisk_addr_r", 16, 0);
kaddr = env_get_ulong("kernel_addr_r", 16, 0);
faddr = env_get_ulong("fdt_addr_r", 16, 0);
sysmem_free((phys_addr_t)fit);
sysmem_free((phys_addr_t)raddr);
sysmem_free((phys_addr_t)kaddr);
sysmem_free((phys_addr_t)faddr);
return 0;
}
static int fit_image_get_subnode(const void *fit, int noffset, const char *name)
{
int sub_noffset;
fdt_for_each_subnode(sub_noffset, fit, noffset) {
if (!strncmp(fit_get_name(fit, sub_noffset, NULL),
name, strlen(name)))
return sub_noffset;
}
return -ENOENT;
}
static int fit_image_load_one(const void *fit, struct blk_desc *dev_desc,
disk_partition_t *part, char *prop_name,
void *data, int check_hash)
{
u32 blk_num, blk_off;
int offset, size;
int noffset, ret;
char *msg = "";
ret = fdt_image_get_offset_size(fit, prop_name, &offset, &size);
if (ret)
return ret;
blk_off = (FIT_ALIGN(fdt_totalsize(fit)) + offset) / dev_desc->blksz;
blk_num = DIV_ROUND_UP(size, dev_desc->blksz);
if (blk_dread(dev_desc, part->start + blk_off, blk_num, data) != blk_num)
return -EIO;
if (check_hash) {
int hash_noffset;
noffset = fit_default_conf_get_node(fit, prop_name);
if (noffset < 0)
return noffset;
hash_noffset = fit_image_get_subnode(fit, noffset,
FIT_HASH_NODENAME);
if (hash_noffset < 0)
return hash_noffset;
printf("%s: ", fdt_get_name(fit, noffset, NULL));
ret = fit_image_check_hash(fit, hash_noffset, data, size, &msg);
if (ret)
return ret;
puts("+\n");
}
return 0;
}
/* Calculate what we really need */
ulong fit_image_get_bootables_size(const void *fit)
{
ulong off[3] = { 0, 0, 0 };
ulong max_off, load;
int offset, size;
#if 0
if (!fit_get_totalsize(fit, &size))
return size;
#endif
if (!fit_image_get_param(fit, FIT_FDT_PROP, &load, &offset, &size))
off[0] = offset + FIT_ALIGN(size);
if (!fit_image_get_param(fit, FIT_KERNEL_PROP, &load, &offset, &size))
off[1] = offset + FIT_ALIGN(size);
if (!fit_image_get_param(fit, FIT_RAMDISK_PROP, &load, &offset, &size))
off[2] = offset + FIT_ALIGN(size);
max_off = max(off[0], off[1]);
max_off = max(max_off, off[2]);
return FIT_ALIGN(fdt_totalsize(fit)) + max_off;
}
void *fit_image_load_bootables(ulong *size)
{
struct blk_desc *dev_desc;
disk_partition_t part;
int blk_num;
void *fit;
dev_desc = rockchip_get_bootdev();
if (!dev_desc)
return NULL;
fit = fit_get_blob(dev_desc, &part, false);
if (!fit) {
FIT_I("No fit blob\n");
return NULL;
}
*size = fit_image_get_bootables_size(fit);
if (*size == 0) {
FIT_I("No bootable image\n");
return NULL;
}
blk_num = DIV_ROUND_UP(*size, dev_desc->blksz);
fit = sysmem_alloc(MEM_FIT, blk_num * dev_desc->blksz);
if (!fit)
return NULL;
if (blk_dread(dev_desc, part.start, blk_num, fit) != blk_num) {
FIT_I("Failed to load bootable images\n");
return NULL;
}
return fit;
}
static void fit_msg(const void *fit)
{
FIT_I("%ssigned, %sconf required\n",
fit_is_signed(fit, gd_fdt_blob()) ? "" : "no ",
fit_sig_require_conf(fit, gd_fdt_blob()) ? "" : "no ");
}
#ifdef CONFIG_ROCKCHIP_RESOURCE_IMAGE
ulong fit_image_init_resource(struct blk_desc *dev_desc)
{
disk_partition_t part;
void *fit, *buf;
int offset, size;
int ret = 0;
if (!dev_desc)
return -ENODEV;
fit = fit_get_blob(dev_desc, &part, true);
if (!fit)
return -EAGAIN;
ret = fdt_image_get_offset_size(fit, FIT_MULTI_PROP, &offset, &size);
if (ret)
return -EINVAL;
buf = memalign(ARCH_DMA_MINALIGN, ALIGN(size, dev_desc->blksz));
if (!buf)
return -ENOMEM;
printf("RESC: '%s', blk@0x%08lx\n", part.name,
part.start + ((FIT_ALIGN(fdt_totalsize(fit)) + offset) / dev_desc->blksz));
ret = fit_image_load_one(fit, dev_desc, &part, FIT_MULTI_PROP, buf, 1);
if (ret)
return ret;
ret = resource_setup_ram_list(dev_desc, buf);
if (ret) {
FIT_I("Failed to setup resource ram list, ret=%d\n", ret);
free(fit);
return ret;
}
fit_msg(fit);
free(fit);
return 0;
}
#else
int fit_image_read_dtb(void *fdt_addr)
{
struct blk_desc *dev_desc;
disk_partition_t part;
void *fit;
dev_desc = rockchip_get_bootdev();
if (!dev_desc) {
FIT_I("No dev_desc!\n");
return -ENODEV;;
}
fit = fit_get_blob(dev_desc, &part, true);
if (!fit)
return -EINVAL;
fit_msg(fit);
return fit_image_load_one(fit, dev_desc, &part, FIT_FDT_PROP,
(void *)fdt_addr, 1);
}
#endif