u-boot/board/xilinx/zynqmp/cmds.c
Siva Durga Prasad Paladugu 5860bc16b9 arm64: zynqmp: Add new command for TCM initialization
This patch adds new zynqmp command "zynqmp tcminit mode" to
initialize TCM. TCM needs to be initialized before accessing
to avoid ECC errors. This new command helps to perform
the same. It also makes tcm_init() as global and uses it for
doing the TCM initialization.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2018-10-16 16:53:24 +02:00

190 lines
4.7 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* (C) Copyright 2018 Xilinx, Inc.
* Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
*/
#include <common.h>
#include <malloc.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
)