u-boot/arch/arm/mach-imx/spl_imx_romapi.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2019 NXP
*/
#include <common.h>
#include <errno.h>
#include <image.h>
#include <log.h>
#include <asm/global_data.h>
#include <linux/libfdt.h>
#include <spl.h>
#include <asm/mach-imx/image.h>
#include <asm/arch/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
/* Caller need ensure the offset and size to align with page size */
ulong spl_romapi_raw_seekable_read(u32 offset, u32 size, void *buf)
{
volatile gd_t *pgd = gd;
int ret;
debug("%s 0x%x, size 0x%x\n", __func__, offset, size);
ret = g_rom_api->download_image(buf, offset, size,
((uintptr_t)buf) ^ offset ^ size);
set_gd(pgd);
if (ret == ROM_API_OKAY)
return size;
printf("%s Failure when load 0x%x, size 0x%x\n", __func__, offset, size);
return 0;
}
ulong __weak spl_romapi_get_uboot_base(u32 image_offset, u32 rom_bt_dev)
{
return image_offset +
(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512 - 0x8000);
}
static int is_boot_from_stream_device(u32 boot)
{
u32 interface;
interface = boot >> 16;
if (interface >= BT_DEV_TYPE_USB)
return 1;
if (interface == BT_DEV_TYPE_MMC && (boot & 1))
return 1;
return 0;
}
static ulong spl_romapi_read_seekable(struct spl_load_info *load,
ulong sector, ulong count,
void *buf)
{
u32 pagesize = *(u32 *)load->priv;
ulong byte = count * pagesize;
u32 offset;
offset = sector * pagesize;
return spl_romapi_raw_seekable_read(offset, byte, buf) / pagesize;
}
static int spl_romapi_load_image_seekable(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
u32 rom_bt_dev)
{
volatile gd_t *pgd = gd;
int ret;
u32 offset;
u32 pagesize, size;
struct image_header *header;
u32 image_offset;
ret = g_rom_api->query_boot_infor(QUERY_IVT_OFF, &offset,
((uintptr_t)&offset) ^ QUERY_IVT_OFF);
ret |= g_rom_api->query_boot_infor(QUERY_PAGE_SZ, &pagesize,
((uintptr_t)&pagesize) ^ QUERY_PAGE_SZ);
ret |= g_rom_api->query_boot_infor(QUERY_IMG_OFF, &image_offset,
((uintptr_t)&image_offset) ^ QUERY_IMG_OFF);
set_gd(pgd);
if (ret != ROM_API_OKAY) {
puts("ROMAPI: Failure query boot infor pagesize/offset\n");
return -1;
}
header = (struct image_header *)(CONFIG_SPL_IMX_ROMAPI_LOADADDR);
printf("image offset 0x%x, pagesize 0x%x, ivt offset 0x%x\n",
image_offset, pagesize, offset);
offset = spl_romapi_get_uboot_base(image_offset, rom_bt_dev);
size = ALIGN(sizeof(struct image_header), pagesize);
ret = g_rom_api->download_image((u8 *)header, offset, size,
((uintptr_t)header) ^ offset ^ size);
set_gd(pgd);
if (ret != ROM_API_OKAY) {
printf("ROMAPI: download failure offset 0x%x size 0x%x\n",
offset, size);
return -1;
}
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) && image_get_magic(header) == FDT_MAGIC) {
struct spl_load_info load;
memset(&load, 0, sizeof(load));
load.bl_len = pagesize;
load.read = spl_romapi_read_seekable;
load.priv = &pagesize;
return spl_load_simple_fit(spl_image, &load, offset / pagesize, header);
} else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
struct spl_load_info load;
memset(&load, 0, sizeof(load));
load.bl_len = pagesize;
load.read = spl_romapi_read_seekable;
load.priv = &pagesize;
ret = spl_load_imx_container(spl_image, &load, offset / pagesize);
} else {
/* TODO */
puts("Can't support legacy image\n");
return -1;
}
return 0;
}
static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
ulong count, void *buf)
{
memcpy(buf, (void *)(sector), count);
if (load->priv) {
ulong *p = (ulong *)load->priv;
ulong total = sector + count;
if (total > *p)
*p = total;
}
return count;
}
static ulong get_fit_image_size(void *fit)
{
struct spl_image_info spl_image;
struct spl_load_info spl_load_info;
ulong last = (ulong)fit;
memset(&spl_load_info, 0, sizeof(spl_load_info));
spl_load_info.bl_len = 1;
spl_load_info.read = spl_ram_load_read;
spl_load_info.priv = &last;
spl_load_simple_fit(&spl_image, &spl_load_info,
(uintptr_t)fit, fit);
return last - (ulong)fit;
}
static u8 *search_fit_header(u8 *p, int size)
{
int i;
for (i = 0; i < size; i += 4)
if (genimg_get_format(p + i) == IMAGE_FORMAT_FIT)
return p + i;
return NULL;
}
static u8 *search_container_header(u8 *p, int size)
{
int i = 0;
u8 *hdr;
for (i = 0; i < size; i += 4) {
hdr = p + i;
if (*(hdr + 3) == 0x87 && *hdr == 0 && (*(hdr + 1) != 0 || *(hdr + 2) != 0))
return p + i;
}
return NULL;
}
static u8 *search_img_header(u8 *p, int size)
{
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT))
return search_fit_header(p, size);
else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER))
return search_container_header(p, size);
return NULL;
}
static u32 img_header_size(void)
{
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT))
return sizeof(struct fdt_header);
else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER))
return sizeof(struct container_hdr);
return 0;
}
static int img_info_size(void *img_hdr)
{
#ifdef CONFIG_SPL_LOAD_FIT
return fit_get_size(img_hdr);
#elif defined CONFIG_SPL_LOAD_IMX_CONTAINER
struct container_hdr *container = img_hdr;
return (container->length_lsb + (container->length_msb << 8));
#else
return 0;
#endif
}
static int img_total_size(void *img_hdr)
{
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT)) {
return get_fit_image_size(img_hdr);
} else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
int total = get_container_size((ulong)img_hdr, NULL);
if (total < 0) {
printf("invalid container image\n");
return 0;
}
return total;
}
return 0;
}
static int spl_romapi_load_image_stream(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
struct spl_load_info load;
volatile gd_t *pgd = gd;
u32 pagesize, pg;
int ret;
int i = 0;
u8 *p = (u8 *)CONFIG_SPL_IMX_ROMAPI_LOADADDR;
u8 *phdr = NULL;
int imagesize;
int total;
ret = g_rom_api->query_boot_infor(QUERY_PAGE_SZ, &pagesize,
((uintptr_t)&pagesize) ^ QUERY_PAGE_SZ);
set_gd(pgd);
if (ret != ROM_API_OKAY)
puts("failure at query_boot_info\n");
pg = pagesize;
if (pg < 1024)
pg = 1024;
for (i = 0; i < 640; i++) {
ret = g_rom_api->download_image(p, 0, pg,
((uintptr_t)p) ^ pg);
set_gd(pgd);
if (ret != ROM_API_OKAY) {
puts("Steam(USB) download failure\n");
return -1;
}
phdr = search_img_header(p, pg);
p += pg;
if (phdr)
break;
}
if (!phdr) {
puts("Can't found uboot image in 640K range\n");
return -1;
}
if (p - phdr < img_header_size()) {
ret = g_rom_api->download_image(p, 0, pg, ((uintptr_t)p) ^ pg);
set_gd(pgd);
if (ret != ROM_API_OKAY) {
puts("Steam(USB) download failure\n");
return -1;
}
p += pg;
}
imagesize = img_info_size(phdr);
printf("Find img info 0x&%p, size %d\n", phdr, imagesize);
if (p - phdr < imagesize) {
imagesize -= p - phdr;
/*need pagesize hear after ROM fix USB problme*/
imagesize += pg - 1;
imagesize /= pg;
imagesize *= pg;
printf("Need continue download %d\n", imagesize);
ret = g_rom_api->download_image(p, 0, imagesize,
((uintptr_t)p) ^ imagesize);
set_gd(pgd);
p += imagesize;
if (ret != ROM_API_OKAY) {
printf("Failure download %d\n", imagesize);
return -1;
}
}
total = img_total_size(phdr);
total += 3;
total &= ~0x3;
imagesize = total - (p - phdr);
imagesize += pagesize - 1;
imagesize /= pagesize;
imagesize *= pagesize;
printf("Download %d, Total size %d\n", imagesize, total);
ret = g_rom_api->download_image(p, 0, imagesize,
((uintptr_t)p) ^ imagesize);
set_gd(pgd);
if (ret != ROM_API_OKAY)
printf("ROM download failure %d\n", imagesize);
memset(&load, 0, sizeof(load));
load.bl_len = 1;
load.read = spl_ram_load_read;
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT))
return spl_load_simple_fit(spl_image, &load, (ulong)phdr, phdr);
else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER))
return spl_load_imx_container(spl_image, &load, (ulong)phdr);
return -1;
}
int board_return_to_bootrom(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
volatile gd_t *pgd = gd;
int ret;
u32 boot;
ret = g_rom_api->query_boot_infor(QUERY_BT_DEV, &boot,
((uintptr_t)&boot) ^ QUERY_BT_DEV);
set_gd(pgd);
if (ret != ROM_API_OKAY) {
puts("ROMAPI: failure at query_boot_info\n");
return -1;
}
if (is_boot_from_stream_device(boot))
return spl_romapi_load_image_stream(spl_image, bootdev);
return spl_romapi_load_image_seekable(spl_image, bootdev, boot);
}