arm64: zynqmp: Add support for saving sha3 key to different address
By default 48B sha3 hash value is written to srcaddr which is not the best
solution in case of that you want to use data for other operations. That's
why add key_addr optional parameters which enables to write 48B sha3 hash
value to specified address.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Tested-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
diff --git a/board/xilinx/zynqmp/cmds.c b/board/xilinx/zynqmp/cmds.c
index b1dc98d..cf63ad9 100644
--- a/board/xilinx/zynqmp/cmds.c
+++ b/board/xilinx/zynqmp/cmds.c
@@ -285,11 +285,11 @@
static int do_zynqmp_sha3(struct cmd_tbl *cmdtp, int flag,
int argc, char * const argv[])
{
- u64 srcaddr;
+ u64 srcaddr, hashaddr;
u32 srclen, ret_payload[PAYLOAD_ARG_CNT];
int ret;
- if (argc != cmdtp->maxargs)
+ if (argc > cmdtp->maxargs || argc < (cmdtp->maxargs - 1))
return CMD_RET_USAGE;
if (zynqmp_firmware_version() <= PMUFW_V1_0) {
@@ -302,6 +302,15 @@
srcaddr = simple_strtoul(argv[2], NULL, 16);
srclen = simple_strtoul(argv[3], NULL, 16);
+ if (argc == 5) {
+ hashaddr = simple_strtoul(argv[4], NULL, 16);
+ flush_dcache_range(hashaddr,
+ hashaddr + roundup(ZYNQMP_SHA3_SIZE,
+ ARCH_DMA_MINALIGN));
+ } else {
+ hashaddr = srcaddr;
+ }
+
/* Check srcaddr or srclen != 0 */
if (!srcaddr || !srclen) {
puts("ERR: srcaddr & srclen should not be 0\n");
@@ -328,9 +337,10 @@
return CMD_RET_FAILURE;
}
- ret = xilinx_pm_request(PM_SECURE_SHA, upper_32_bits((ulong)srcaddr),
- lower_32_bits((ulong)srcaddr), ZYNQMP_SHA3_SIZE,
- ZYNQMP_SHA3_FINAL, ret_payload);
+ ret = xilinx_pm_request(PM_SECURE_SHA, upper_32_bits((ulong)hashaddr),
+ lower_32_bits((ulong)hashaddr),
+ ZYNQMP_SHA3_SIZE, ZYNQMP_SHA3_FINAL,
+ ret_payload);
if (ret || ret_payload[1]) {
printf("Failed: SHA FINAL status:0x%x, errcode:0x%x\n",
ret, ret_payload[1]);
@@ -347,7 +357,7 @@
U_BOOT_CMD_MKENT(mmio_write, 5, 0, do_zynqmp_mmio_write, "", ""),
U_BOOT_CMD_MKENT(aes, 9, 0, do_zynqmp_aes, "", ""),
U_BOOT_CMD_MKENT(rsa, 7, 0, do_zynqmp_rsa, "", ""),
- U_BOOT_CMD_MKENT(sha3, 4, 0, do_zynqmp_sha3, "", ""),
+ U_BOOT_CMD_MKENT(sha3, 5, 0, do_zynqmp_sha3, "", ""),
#ifdef CONFIG_DEFINE_TCM_OCM_MMAP
U_BOOT_CMD_MKENT(tcminit, 3, 0, do_zynqmp_tcm_init, "", ""),
#endif
@@ -415,9 +425,10 @@
" exp : private key exponent for RSA decryption(4096 bits)\n"
" public key exponent for RSA encryption(32 bits)\n"
" rsaop : 0 for RSA Decryption, 1 for RSA Encryption\n"
- "zynqmp sha3 srcaddr srclen -\n"
+ "zynqmp sha3 srcaddr srclen [key_addr] -\n"
" Generates sha3 hash value for data blob at srcaddr and puts\n"
" 48 bytes hash value into srcaddr\n"
+ " Optional key_addr can be specified for saving sha3 hash value\n"
" Note: srcaddr/srclen should not be 0\n"
;
#endif