mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 21:24:29 +00:00
145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2018 Xilinx, Inc.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <log.h>
|
|
#include <part.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/hardware.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <u-boot/md5.h>
|
|
#include <zynq_bootimg.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#define ZYNQ_IMAGE_PHDR_OFFSET 0x09C
|
|
#define ZYNQ_IMAGE_FSBL_LEN_OFFSET 0x040
|
|
#define ZYNQ_PART_HDR_CHKSUM_WORD_COUNT 0x0F
|
|
#define ZYNQ_PART_HDR_WORD_COUNT 0x10
|
|
#define ZYNQ_MAXIMUM_IMAGE_WORD_LEN 0x40000000
|
|
#define MD5_CHECKSUM_SIZE 16
|
|
|
|
struct headerarray {
|
|
u32 fields[16];
|
|
};
|
|
|
|
/*
|
|
* Check whether the given partition is last partition or not
|
|
*/
|
|
static int zynq_islastpartition(struct headerarray *head)
|
|
{
|
|
int index;
|
|
|
|
debug("%s\n", __func__);
|
|
if (head->fields[ZYNQ_PART_HDR_CHKSUM_WORD_COUNT] != 0xFFFFFFFF)
|
|
return -1;
|
|
|
|
for (index = 0; index < ZYNQ_PART_HDR_WORD_COUNT - 1; index++) {
|
|
if (head->fields[index] != 0x0)
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Get the partition count from the partition header
|
|
*/
|
|
int zynq_get_part_count(struct partition_hdr *part_hdr_info)
|
|
{
|
|
u32 count;
|
|
struct headerarray *hap;
|
|
|
|
debug("%s\n", __func__);
|
|
|
|
for (count = 0; count < ZYNQ_MAX_PARTITION_NUMBER; count++) {
|
|
hap = (struct headerarray *)&part_hdr_info[count];
|
|
if (zynq_islastpartition(hap) != -1)
|
|
break;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Get the partition info of all the partitions available.
|
|
*/
|
|
int zynq_get_partition_info(u32 image_base_addr, u32 *fsbl_len,
|
|
struct partition_hdr *part_hdr)
|
|
{
|
|
u32 parthdroffset;
|
|
|
|
*fsbl_len = *((u32 *)(image_base_addr + ZYNQ_IMAGE_FSBL_LEN_OFFSET));
|
|
|
|
parthdroffset = *((u32 *)(image_base_addr + ZYNQ_IMAGE_PHDR_OFFSET));
|
|
|
|
parthdroffset += image_base_addr;
|
|
|
|
memcpy(part_hdr, (u32 *)parthdroffset,
|
|
(sizeof(struct partition_hdr) * ZYNQ_MAX_PARTITION_NUMBER));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Check whether the partition header is valid or not
|
|
*/
|
|
int zynq_validate_hdr(struct partition_hdr *header)
|
|
{
|
|
struct headerarray *hap;
|
|
u32 index;
|
|
u32 checksum;
|
|
|
|
debug("%s\n", __func__);
|
|
|
|
hap = (struct headerarray *)header;
|
|
|
|
for (index = 0; index < ZYNQ_PART_HDR_WORD_COUNT; index++) {
|
|
if (hap->fields[index])
|
|
break;
|
|
}
|
|
if (index == ZYNQ_PART_HDR_WORD_COUNT)
|
|
return -1;
|
|
|
|
checksum = 0;
|
|
for (index = 0; index < ZYNQ_PART_HDR_CHKSUM_WORD_COUNT; index++)
|
|
checksum += hap->fields[index];
|
|
|
|
checksum ^= 0xFFFFFFFF;
|
|
|
|
if (hap->fields[ZYNQ_PART_HDR_CHKSUM_WORD_COUNT] != checksum) {
|
|
printf("Error: Checksum 0x%8.8x != 0x%8.8x\n",
|
|
checksum, hap->fields[ZYNQ_PART_HDR_CHKSUM_WORD_COUNT]);
|
|
return -1;
|
|
}
|
|
|
|
if (header->imagewordlen > ZYNQ_MAXIMUM_IMAGE_WORD_LEN) {
|
|
printf("INVALID_PARTITION_LENGTH\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Validate the partition by calculationg the md5 checksum for the
|
|
* partition and compare with checksum present in checksum offset of
|
|
* partition
|
|
*/
|
|
int zynq_validate_partition(u32 start_addr, u32 len, u32 chksum_off)
|
|
{
|
|
u8 checksum[MD5_CHECKSUM_SIZE];
|
|
u8 calchecksum[MD5_CHECKSUM_SIZE];
|
|
|
|
memcpy(&checksum[0], (u32 *)chksum_off, MD5_CHECKSUM_SIZE);
|
|
|
|
md5_wd((u8 *)start_addr, len, &calchecksum[0], 0x10000);
|
|
|
|
if (!memcmp(checksum, calchecksum, MD5_CHECKSUM_SIZE))
|
|
return 0;
|
|
|
|
printf("Error: Partition DataChecksum\n");
|
|
return -1;
|
|
}
|