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// SPDX-License-Identifier: GPL-2.0
/*
* (C) Copyright 2018 Xilinx, Inc.
* Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
*/
#include <common.h>
#include <env.h>
#include <malloc.h>
#include <zynqmp_firmware.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
static int do_zynqmp_verify_secure(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u64 src_addr, addr;
u32 len, src_lo, src_hi;
u8 *key_ptr = NULL;
int ret;
u32 key_lo = 0;
u32 key_hi = 0;
u32 ret_payload[PAYLOAD_ARG_CNT];
if (argc < 4)
return CMD_RET_USAGE;
src_addr = simple_strtoull(argv[2], NULL, 16);
len = simple_strtoul(argv[3], NULL, 16);
if (argc == 5)
key_ptr = (uint8_t *)(uintptr_t)simple_strtoull(argv[4],
NULL, 16);
if ((ulong)src_addr != ALIGN((ulong)src_addr,
CONFIG_SYS_CACHELINE_SIZE)) {
printf("Failed: source address not aligned:%lx\n",
(ulong)src_addr);
return -EINVAL;
}
src_lo = lower_32_bits((ulong)src_addr);
src_hi = upper_32_bits((ulong)src_addr);
flush_dcache_range((ulong)src_addr, (ulong)(src_addr + len));
if (key_ptr) {
key_lo = lower_32_bits((ulong)key_ptr);
key_hi = upper_32_bits((ulong)key_ptr);
flush_dcache_range((ulong)key_ptr,
(ulong)(key_ptr + KEY_PTR_LEN));
}
ret = invoke_smc(ZYNQMP_SIP_SVC_PM_SECURE_IMG_LOAD, src_lo, src_hi,
key_lo, key_hi, ret_payload);
if (ret) {
printf("Failed: secure op status:0x%x\n", ret);
} else {
addr = (u64)ret_payload[1] << 32 | ret_payload[2];
printf("Verified image at 0x%llx\n", addr);
env_set_hex("zynqmp_verified_img_addr", addr);
}
return ret;
}
static int do_zynqmp_mmio_read(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 read_val, addr;
int ret;
if (argc != cmdtp->maxargs)
return CMD_RET_USAGE;
addr = simple_strtoul(argv[2], NULL, 16);
ret = zynqmp_mmio_read(addr, &read_val);
if (!ret)
printf("mmio read value at 0x%x = 0x%x\n",
addr, read_val);
else
printf("Failed: mmio read\n");
return ret;
}
static int do_zynqmp_mmio_write(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u32 addr, mask, val;
int ret;
if (argc != cmdtp->maxargs)
return CMD_RET_USAGE;
addr = simple_strtoul(argv[2], NULL, 16);
mask = simple_strtoul(argv[3], NULL, 16);
val = simple_strtoul(argv[4], NULL, 16);
ret = zynqmp_mmio_write(addr, mask, val);
if (ret != 0)
printf("Failed: mmio write\n");
return ret;
}
#ifdef CONFIG_DEFINE_TCM_OCM_MMAP
static int do_zynqmp_tcm_init(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
u8 mode;
if (argc != cmdtp->maxargs)
return CMD_RET_USAGE;
mode = simple_strtoul(argv[2], NULL, 16);
if (mode != TCM_LOCK && mode != TCM_SPLIT) {
printf("Mode should be either 0(lock)/1(split)\n");
return CMD_RET_FAILURE;
}
dcache_disable();
tcm_init(mode);
dcache_enable();
return CMD_RET_SUCCESS;
}
#endif
static cmd_tbl_t cmd_zynqmp_sub[] = {
U_BOOT_CMD_MKENT(secure, 5, 0, do_zynqmp_verify_secure, "", ""),
U_BOOT_CMD_MKENT(mmio_read, 3, 0, do_zynqmp_mmio_read, "", ""),
U_BOOT_CMD_MKENT(mmio_write, 5, 0, do_zynqmp_mmio_write, "", ""),
#ifdef CONFIG_DEFINE_TCM_OCM_MMAP
U_BOOT_CMD_MKENT(tcminit, 3, 0, do_zynqmp_tcm_init, "", ""),
#endif
};
/**
* do_zynqmp - Handle the "zynqmp" command-line command
* @cmdtp: Command data struct pointer
* @flag: Command flag
* @argc: Command-line argument count
* @argv: Array of command-line arguments
*
* Processes the zynqmp specific commands
*
* Return: return 0 on success and CMD_RET_USAGE incase of misuse and error
*/
static int do_zynqmp(cmd_tbl_t *cmdtp, int flag, int argc,
char *const argv[])
{
cmd_tbl_t *c;
if (argc < 2)
return CMD_RET_USAGE;
c = find_cmd_tbl(argv[1], &cmd_zynqmp_sub[0],
ARRAY_SIZE(cmd_zynqmp_sub));
if (c)
return c->cmd(c, flag, argc, argv);
else
return CMD_RET_USAGE;
}
/***************************************************/
#ifdef CONFIG_SYS_LONGHELP
static char zynqmp_help_text[] =
"secure src len [key_addr] - verifies secure images of $len bytes\n"
" long at address $src. Optional key_addr\n"
" can be specified if user key needs to\n"
" be used for decryption\n"
"zynqmp mmio_read address - read from address\n"
"zynqmp mmio_write address mask value - write value after masking to\n"
" address\n"
#ifdef CONFIG_DEFINE_TCM_OCM_MMAP
"zynqmp tcminit mode - Initialize the TCM with zeros. TCM needs to be\n"
" initialized before accessing to avoid ECC\n"
" errors. mode specifies in which mode TCM has\n"
" to be initialized. Supported modes will be\n"
" lock(0)/split(1)\n"
#endif
;
#endif
U_BOOT_CMD(
zynqmp, 5, 1, do_zynqmp,
"ZynqMP sub-system",
zynqmp_help_text
)
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