arm64: zynqmp: Add support for SHA3 command

This patch adds support for SHA3 command. It takes data blob
as input and generates 48 bytes sha3 hash value.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/arch/arm/mach-zynqmp/include/mach/sys_proto.h b/arch/arm/mach-zynqmp/include/mach/sys_proto.h
index d52eccc..1c12eac 100644 (file)
--- a/arch/arm/mach-zynqmp/include/mach/sys_proto.h
+++ b/arch/arm/mach-zynqmp/include/mach/sys_proto.h
@@ -15,6 +15,11 @@
 #define PRIV_EXPO_LEN  512
 #define PUB_EXPO_LEN   4
 
+#define ZYNQMP_SHA3_INIT       1
+#define ZYNQMP_SHA3_UPDATE     2
+#define ZYNQMP_SHA3_FINAL      4
+#define ZYNQMP_SHA3_SIZE       48
+
 #define ZYNQMP_FPGA_BIT_AUTH_DDR       1
 #define ZYNQMP_FPGA_BIT_AUTH_OCM       2
 #define ZYNQMP_FPGA_BIT_ENC_USR_KEY    3

diff --git a/board/xilinx/zynqmp/cmds.c b/board/xilinx/zynqmp/cmds.c
index bccba09..b1dc98d 100644 (file)
--- a/board/xilinx/zynqmp/cmds.c
+++ b/board/xilinx/zynqmp/cmds.c
@@ -282,6 +282,64 @@ static int do_zynqmp_rsa(struct cmd_tbl *cmdtp, int flag, int argc,
        return CMD_RET_SUCCESS;
 }
 
+static int do_zynqmp_sha3(struct cmd_tbl *cmdtp, int flag,
+                         int argc, char * const argv[])
+{
+       u64 srcaddr;
+       u32 srclen, ret_payload[PAYLOAD_ARG_CNT];
+       int ret;
+
+       if (argc != cmdtp->maxargs)
+               return CMD_RET_USAGE;
+
+       if (zynqmp_firmware_version() <= PMUFW_V1_0) {
+               puts("ERR: PMUFW v1.0 or less is detected\n");
+               puts("ERR: Encrypt/Decrypt feature is not supported\n");
+               puts("ERR: Please upgrade PMUFW\n");
+               return CMD_RET_FAILURE;
+       }
+
+       srcaddr = simple_strtoul(argv[2], NULL, 16);
+       srclen = simple_strtoul(argv[3], NULL, 16);
+
+       /* Check srcaddr or srclen != 0 */
+       if (!srcaddr || !srclen) {
+               puts("ERR: srcaddr & srclen should not be 0\n");
+               return CMD_RET_USAGE;
+       }
+
+       flush_dcache_range(srcaddr,
+                          srcaddr + roundup(srclen, ARCH_DMA_MINALIGN));
+
+       ret = xilinx_pm_request(PM_SECURE_SHA, 0, 0, 0,
+                               ZYNQMP_SHA3_INIT, ret_payload);
+       if (ret || ret_payload[1]) {
+               printf("Failed: SHA INIT status:0x%x, errcode:0x%x\n",
+                      ret, ret_payload[1]);
+               return CMD_RET_FAILURE;
+       }
+
+       ret = xilinx_pm_request(PM_SECURE_SHA, upper_32_bits((ulong)srcaddr),
+                               lower_32_bits((ulong)srcaddr),
+                               srclen, ZYNQMP_SHA3_UPDATE, ret_payload);
+       if (ret || ret_payload[1]) {
+               printf("Failed: SHA UPDATE status:0x%x, errcode:0x%x\n",
+                      ret, ret_payload[1]);
+               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);
+       if (ret || ret_payload[1]) {
+               printf("Failed: SHA FINAL status:0x%x, errcode:0x%x\n",
+                      ret, ret_payload[1]);
+               return CMD_RET_FAILURE;
+       }
+
+       return CMD_RET_SUCCESS;
+}
+
 static struct cmd_tbl cmd_zynqmp_sub[] = {
        U_BOOT_CMD_MKENT(secure, 5, 0, do_zynqmp_verify_secure, "", ""),
        U_BOOT_CMD_MKENT(pmufw, 4, 0, do_zynqmp_pmufw, "", ""),
@@ -289,6 +347,7 @@ static struct cmd_tbl cmd_zynqmp_sub[] = {
        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, "", ""),
 #ifdef CONFIG_DEFINE_TCM_OCM_MMAP
        U_BOOT_CMD_MKENT(tcminit, 3, 0, do_zynqmp_tcm_init, "", ""),
 #endif
@@ -356,6 +415,10 @@ static char zynqmp_help_text[] =
        "       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"
+       "       Generates sha3 hash value for data blob at srcaddr and puts\n"
+       "       48 bytes hash value into srcaddr\n"
+       "       Note: srcaddr/srclen should not be 0\n"
        ;
 #endif