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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
*
* Authors:
* Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
*/
#include <arm_ffa.h>
#include <command.h>
#include <dm.h>
#include <mapmem.h>
#include <stdlib.h>
#include <asm/io.h>
/* Select the right physical address formatting according to the platform */
#ifdef CONFIG_PHYS_64BIT
#define PhysAddrLength "ll"
#else
#define PhysAddrLength ""
#endif
#define PHYS_ADDR_LN "%" PhysAddrLength "x"
/**
* ffa_get_dev() - Return the FF-A device
* @devp: pointer to the FF-A device
*
* Search for the FF-A device.
*
* Return:
* 0 on success. Otherwise, failure
*/
static int ffa_get_dev(struct udevice **devp)
{
int ret;
ret = uclass_first_device_err(UCLASS_FFA, devp);
if (ret) {
log_err("Cannot find FF-A bus device\n");
return ret;
}
return 0;
}
/**
* do_ffa_getpart() - implementation of the getpart subcommand
* @cmdtp: Command Table
* @flag: flags
* @argc: number of arguments
* @argv: arguments
*
* Query a secure partition information. The secure partition UUID is provided
* as an argument. The function uses the arm_ffa driver
* partition_info_get operation which implements FFA_PARTITION_INFO_GET
* ABI to retrieve the data. The input UUID string is expected to be in big
* endian format.
*
* Return:
*
* CMD_RET_SUCCESS: on success, otherwise failure
*/
static int do_ffa_getpart(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
u32 count = 0;
int ret;
struct ffa_partition_desc *descs;
u32 i;
struct udevice *dev;
if (argc != 2) {
log_err("Missing argument\n");
return CMD_RET_USAGE;
}
ret = ffa_get_dev(&dev);
if (ret)
return CMD_RET_FAILURE;
/* Ask the driver to fill the buffer with the SPs info */
ret = ffa_partition_info_get(dev, argv[1], &count, &descs);
if (ret) {
log_err("Failure in querying partition(s) info (error code: %d)\n", ret);
return CMD_RET_FAILURE;
}
/* SPs found , show the partition information */
for (i = 0; i < count ; i++) {
log_info("Partition: id = %x , exec_ctxt %x , properties %x\n",
descs[i].info.id,
descs[i].info.exec_ctxt,
descs[i].info.properties);
}
return CMD_RET_SUCCESS;
}
/**
* do_ffa_ping() - implementation of the ping subcommand
* @cmdtp: Command Table
* @flag: flags
* @argc: number of arguments
* @argv: arguments
*
* Send data to a secure partition. The secure partition UUID is provided
* as an argument. Use the arm_ffa driver sync_send_receive operation
* which implements FFA_MSG_SEND_DIRECT_{REQ,RESP} ABIs to send/receive data.
*
* Return:
*
* CMD_RET_SUCCESS: on success, otherwise failure
*/
static int do_ffa_ping(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct ffa_send_direct_data msg = {
.data0 = 0xaaaaaaaa,
.data1 = 0xbbbbbbbb,
.data2 = 0xcccccccc,
.data3 = 0xdddddddd,
.data4 = 0xeeeeeeee,
};
u16 part_id;
int ret;
struct udevice *dev;
if (argc != 2) {
log_err("Missing argument\n");
return CMD_RET_USAGE;
}
part_id = strtoul(argv[1], NULL, 16);
if (!part_id) {
log_err("Partition ID can not be 0\n");
return CMD_RET_USAGE;
}
ret = ffa_get_dev(&dev);
if (ret)
return CMD_RET_FAILURE;
ret = ffa_sync_send_receive(dev, part_id, &msg, 1);
if (!ret) {
u8 cnt;
log_info("SP response:\n[LSB]\n");
for (cnt = 0;
cnt < sizeof(struct ffa_send_direct_data) / sizeof(u64);
cnt++)
log_info("%llx\n", ((u64 *)&msg)[cnt]);
return CMD_RET_SUCCESS;
}
log_err("Sending direct request error (%d)\n", ret);
return CMD_RET_FAILURE;
}
/**
*do_ffa_devlist() - implementation of the devlist subcommand
* @cmdtp: [in] Command Table
* @flag: flags
* @argc: number of arguments
* @argv: arguments
*
* Query the device belonging to the UCLASS_FFA
* class.
*
* Return:
*
* CMD_RET_SUCCESS: on success, otherwise failure
*/
static int do_ffa_devlist(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct udevice *dev;
int ret;
ret = ffa_get_dev(&dev);
if (ret)
return CMD_RET_FAILURE;
log_info("device %s, addr " PHYS_ADDR_LN ", driver %s, ops " PHYS_ADDR_LN "\n",
dev->name,
map_to_sysmem(dev),
dev->driver->name,
map_to_sysmem(dev->driver->ops));
return CMD_RET_SUCCESS;
}
U_BOOT_LONGHELP(armffa,
"getpart <partition UUID>\n"
" - lists the partition(s) info\n"
"ping <partition ID>\n"
" - sends a data pattern to the specified partition\n"
"devlist\n"
" - displays information about the FF-A device/driver\n");
U_BOOT_CMD_WITH_SUBCMDS(armffa, "Arm FF-A test command", armffa_help_text,
U_BOOT_SUBCMD_MKENT(getpart, 2, 1, do_ffa_getpart),
U_BOOT_SUBCMD_MKENT(ping, 2, 1, do_ffa_ping),
U_BOOT_SUBCMD_MKENT(devlist, 1, 1, do_ffa_devlist));
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