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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014-2016 Stefan Roese <sr@denx.de>
*/
#include <common.h>
#include <cpu_func.h>
#include <dm.h>
#include <fdtdec.h>
#include <hang.h>
#include <image.h>
#include <init.h>
#include <log.h>
#include <spl.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#if defined(CONFIG_SPL_SPI_FLASH_SUPPORT) || defined(CONFIG_SPL_MMC) || \
defined(CONFIG_SPL_SATA)
/*
* When loading U-Boot via SPL from SPI NOR, CONFIG_SYS_SPI_U_BOOT_OFFS must
* point to the offset of kwbimage main header which is always at offset zero
* (defined by BootROM). Therefore other values of CONFIG_SYS_SPI_U_BOOT_OFFS
* makes U-Boot non-bootable.
*/
#ifdef CONFIG_SPL_SPI_FLASH_SUPPORT
#if defined(CONFIG_SYS_SPI_U_BOOT_OFFS) && CONFIG_SYS_SPI_U_BOOT_OFFS != 0
#error CONFIG_SYS_SPI_U_BOOT_OFFS must be set to 0
#endif
#endif
/*
* When loading U-Boot via SPL from eMMC, the kwbimage main header is stored at
* sector 0 and either on HW boot partition or on data partition. Choice of HW
* partition depends on what is configured in eMMC EXT_CSC register.
* When loading U-Boot via SPL from SD card, the kwbimage main header is stored
* at sector 1.
* Therefore MBR/GPT partition booting, fixed sector number and fixed eMMC HW
* partition number are unsupported due to limitation of Marvell BootROM.
* Correct sector number must be determined as runtime in mvebu SPL code based
* on the detected boot source. Otherwise U-Boot SPL would not be able to load
* U-Boot proper.
* Runtime mvebu SPL sector calculation code expects:
* - CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET=0
* - CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0
*/
#ifdef CONFIG_SPL_MMC
#ifdef CONFIG_SYS_MMCSD_FS_BOOT
#error CONFIG_SYS_MMCSD_FS_BOOT is unsupported
#endif
#ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
#error CONFIG_SYS_MMCSD_FS_BOOT_PARTITION is unsupported
#endif
#ifdef CONFIG_SUPPORT_EMMC_BOOT_OVERRIDE_PART_CONFIG
#error CONFIG_SUPPORT_EMMC_BOOT_OVERRIDE_PART_CONFIG is unsupported
#endif
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
#error CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION is unsupported
#endif
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
#error CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION is unsupported
#endif
#ifndef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
#error CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR must be enabled for SD/eMMC boot support
#endif
#if !defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR) || \
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR != 0
#error CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR must be set to 0
#endif
#if !defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET) || \
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET != 0
#error CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET must be set to 0
#endif
#endif
/*
* When loading U-Boot via SPL from SATA disk, the kwbimage main header is
* stored at sector 1. Therefore CONFIG_SPL_SATA_RAW_U_BOOT_SECTOR must be
* set to 1. Otherwise U-Boot SPL would not be able to load U-Boot proper.
*/
#ifdef CONFIG_SPL_SATA
#if !defined(CONFIG_SPL_SATA_RAW_U_BOOT_USE_SECTOR) || \
!defined(CONFIG_SPL_SATA_RAW_U_BOOT_SECTOR) || CONFIG_SPL_SATA_RAW_U_BOOT_SECTOR != 1
#error CONFIG_SPL_SATA_RAW_U_BOOT_SECTOR must be set to 1
#endif
#endif
/* Boot Type - block ID */
#define IBR_HDR_I2C_ID 0x4D
#define IBR_HDR_SPI_ID 0x5A
#define IBR_HDR_NAND_ID 0x8B
#define IBR_HDR_SATA_ID 0x78
#define IBR_HDR_PEX_ID 0x9C
#define IBR_HDR_UART_ID 0x69
#define IBR_HDR_SDIO_ID 0xAE
/* Structure of the main header, version 1 (Armada 370/XP/375/38x/39x) */
struct kwbimage_main_hdr_v1 {
u8 blockid; /* 0x0 */
u8 flags; /* 0x1 */
u16 nandpagesize; /* 0x2-0x3 */
u32 blocksize; /* 0x4-0x7 */
u8 version; /* 0x8 */
u8 headersz_msb; /* 0x9 */
u16 headersz_lsb; /* 0xA-0xB */
u32 srcaddr; /* 0xC-0xF */
u32 destaddr; /* 0x10-0x13 */
u32 execaddr; /* 0x14-0x17 */
u8 options; /* 0x18 */
u8 nandblocksize; /* 0x19 */
u8 nandbadblklocation; /* 0x1A */
u8 reserved4; /* 0x1B */
u16 reserved5; /* 0x1C-0x1D */
u8 ext; /* 0x1E */
u8 checksum; /* 0x1F */
} __packed;
#ifdef CONFIG_SPL_MMC
u32 spl_mmc_boot_mode(struct mmc *mmc, const u32 boot_device)
{
return IS_SD(mmc) ? MMCSD_MODE_RAW : MMCSD_MODE_EMMCBOOT;
}
unsigned long arch_spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
unsigned long raw_sect)
{
return IS_SD(mmc) ? 1 : 0;
}
#endif
static u32 checksum32(void *start, u32 len)
{
u32 csum = 0;
u32 *p = start;
while (len > 0) {
csum += *p++;
len -= sizeof(u32);
};
return csum;
}
int spl_check_board_image(struct spl_image_info *spl_image,
const struct spl_boot_device *bootdev)
{
u32 csum = *(u32 *)(spl_image->load_addr + spl_image->size - 4);
if (checksum32((void *)spl_image->load_addr,
spl_image->size - 4) != csum) {
printf("ERROR: Invalid data checksum in kwbimage\n");
return -EINVAL;
}
return 0;
}
int spl_parse_board_header(struct spl_image_info *spl_image,
const struct spl_boot_device *bootdev,
const void *image_header, size_t size)
{
const struct kwbimage_main_hdr_v1 *mhdr = image_header;
if (size < sizeof(*mhdr)) {
/* This should be compile time assert */
printf("FATAL ERROR: Image header size is too small\n");
hang();
}
/*
* Very basic check for image validity. We cannot check mhdr->checksum
* as it is calculated also from variable length extended headers
* (including SPL content) which is not included in U-Boot image_header.
*/
if (mhdr->version != 1 ||
((mhdr->headersz_msb << 16) | mhdr->headersz_lsb) < sizeof(*mhdr)) {
printf("ERROR: Invalid kwbimage v1\n");
return -EINVAL;
}
if (IS_ENABLED(CONFIG_SPL_SPI_FLASH_SUPPORT) &&
bootdev->boot_device == BOOT_DEVICE_SPI &&
mhdr->blockid != IBR_HDR_SPI_ID) {
printf("ERROR: Wrong blockid (0x%x) in SPI kwbimage\n",
mhdr->blockid);
return -EINVAL;
}
if (IS_ENABLED(CONFIG_SPL_SATA) &&
bootdev->boot_device == BOOT_DEVICE_SATA &&
mhdr->blockid != IBR_HDR_SATA_ID) {
printf("ERROR: Wrong blockid (0x%x) in SATA kwbimage\n",
mhdr->blockid);
return -EINVAL;
}
if (IS_ENABLED(CONFIG_SPL_MMC) &&
(bootdev->boot_device == BOOT_DEVICE_MMC1) &&
mhdr->blockid != IBR_HDR_SDIO_ID) {
printf("ERROR: Wrong blockid (0x%x) in SDIO kwbimage\n",
mhdr->blockid);
return -EINVAL;
}
spl_image->offset = mhdr->srcaddr;
/*
* For SATA srcaddr is specified in number of sectors.
* Retrieve block size of the first SCSI device (same
* code used by the spl_sata_load_image_raw() function)
* or fallback to default sector size of 512 bytes.
*/
if (IS_ENABLED(CONFIG_SPL_SATA) && mhdr->blockid == IBR_HDR_SATA_ID) {
struct blk_desc *blk_dev = blk_get_devnum_by_uclass_id(UCLASS_SCSI, 0);
unsigned long blksz = blk_dev ? blk_dev->blksz : 512;
spl_image->offset *= blksz;
}
if (spl_image->offset % 4 != 0) {
printf("ERROR: Wrong srcaddr (0x%08x) in kwbimage\n",
spl_image->offset);
return -EINVAL;
}
if (mhdr->blocksize <= 4 || mhdr->blocksize % 4 != 0) {
printf("ERROR: Wrong blocksize (0x%08x) in kwbimage\n",
mhdr->blocksize);
return -EINVAL;
}
spl_image->size = mhdr->blocksize;
spl_image->entry_point = mhdr->execaddr;
spl_image->load_addr = mhdr->destaddr;
spl_image->os = IH_OS_U_BOOT;
spl_image->name = "U-Boot";
return 0;
}
u32 spl_boot_device(void)
{
u32 boot_device = get_boot_device();
switch (boot_device) {
/*
* Return to the BootROM to continue the Marvell xmodem
* UART boot protocol. As initiated by the kwboot tool.
*
* This can only be done by the BootROM since the beginning
* of the image is already read and interpreted by the BootROM.
* SPL has no chance to receive this information. So we
* need to return to the BootROM to enable this xmodem
* UART download. Use SPL infrastructure to return to BootROM.
*/
case BOOT_DEVICE_UART:
return BOOT_DEVICE_BOOTROM;
/*
* If SPL is compiled with chosen boot_device support
* then use SPL driver for loading U-Boot proper.
*/
#ifdef CONFIG_SPL_MMC
case BOOT_DEVICE_MMC1:
return BOOT_DEVICE_MMC1;
#endif
#ifdef CONFIG_SPL_SATA
case BOOT_DEVICE_SATA:
return BOOT_DEVICE_SATA;
#endif
#ifdef CONFIG_SPL_SPI_FLASH_SUPPORT
case BOOT_DEVICE_SPI:
return BOOT_DEVICE_SPI;
#endif
/*
* If SPL is not compiled with chosen boot_device support
* then return to the BootROM. BootROM supports loading
* U-Boot proper from any valid boot_device present in SAR
* register.
*/
default:
return BOOT_DEVICE_BOOTROM;
}
}
void board_boot_order(u32 *spl_boot_list)
{
spl_boot_list[0] = spl_boot_device();
if (spl_boot_list[0] != BOOT_DEVICE_BOOTROM)
spl_boot_list[1] = BOOT_DEVICE_BOOTROM;
}
#else
u32 spl_boot_device(void)
{
return BOOT_DEVICE_BOOTROM;
}
#endif
int board_return_to_bootrom(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
u32 *regs = *(u32 **)(CONFIG_SPL_STACK + 4);
printf("Returning to BootROM (return address 0x%08x)...\n", regs[13]);
return_to_bootrom();
/* NOTREACHED - return_to_bootrom() does not return */
hang();
}
void board_init_f(ulong dummy)
{
int ret;
/*
* Pin muxing needs to be done before UART output, since
* on A38x the UART pins need some re-muxing for output
* to work.
*/
board_early_init_f();
/*
* Use special translation offset for SPL. This needs to be
* configured *before* spl_init() is called as this function
* calls dm_init() which calls the bind functions of the
* device drivers. Here the base address needs to be configured
* (translated) correctly.
*/
gd->translation_offset = 0xd0000000 - 0xf1000000;
ret = spl_init();
if (ret) {
printf("spl_init() failed: %d\n", ret);
hang();
}
preloader_console_init();
/* Armada 375 does not support SerDes and DDR3 init yet */
#if !defined(CONFIG_ARMADA_375)
/* First init the serdes PHY's */
serdes_phy_config();
/* Setup DDR */
ret = ddr3_init();
if (ret) {
printf("ddr3_init() failed: %d\n", ret);
if (IS_ENABLED(CONFIG_DDR_RESET_ON_TRAINING_FAILURE) &&
get_boot_device() != BOOT_DEVICE_UART)
reset_cpu();
else
hang();
}
#endif
/* Initialize Auto Voltage Scaling */
mv_avs_init();
/* Update read timing control for PCIe */
mv_rtc_config();
}
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