xilinx: versal-net: Add new versalnet loadpdi command

Versal NET loadpdi command is used for loading secure & non-secure
pdi images.

Signed-off-by: Algapally Santosh Sagar <santoshsagar.algapally@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/f43709af894b669833770acb39ff5856fecf6d66.1684761656.git.michal.simek@amd.com

3 files changed, 90 insertions, 0 deletions

diff --git a/board/xilinx/versal-net/Kconfig b/board/xilinx/versal-net/Kconfig
index 8f94d2b..2484429 100644
--- a/board/xilinx/versal-net/Kconfig
+++ b/board/xilinx/versal-net/Kconfig
@@ -6,4 +6,12 @@
 
 if ARCH_VERSAL_NET
 
+config CMD_VERSAL_NET
+	bool "Enable Versal NET specific commands"
+	default y
+	depends on ZYNQMP_FIRMWARE
+	help
+	  Select this to enable Versal NET specific commands.
+	  Commands like versalnet loadpdi are enabled by this.
+
 endif
diff --git a/board/xilinx/versal-net/Makefile b/board/xilinx/versal-net/Makefile
index 2008d4e..f9ff07c 100644
--- a/board/xilinx/versal-net/Makefile
+++ b/board/xilinx/versal-net/Makefile
@@ -7,3 +7,4 @@
 #
 
 obj-y	:= board.o
+obj-$(CONFIG_CMD_VERSAL_NET)	+= cmds.o
diff --git a/board/xilinx/versal-net/cmds.c b/board/xilinx/versal-net/cmds.c
new file mode 100644
index 0000000..b18a71f
--- /dev/null
+++ b/board/xilinx/versal-net/cmds.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023, Advanced Micro Devices, Inc.
+ *
+ * Michal Simek <michal.simek@amd.com>
+ */
+
+#include <cpu_func.h>
+#include <command.h>
+#include <common.h>
+#include <log.h>
+#include <memalign.h>
+#include <versalpl.h>
+#include <zynqmp_firmware.h>
+
+/**
+ * do_versalnet_load_pdi - Handle the "versalnet load pdi" command-line command
+ * @cmdtp:      Command data struct pointer
+ * @flag:       Command flag
+ * @argc:       Command-line argument count
+ * @argv:       Array of command-line arguments
+ *
+ * Processes the Versal NET load pdi command
+ *
+ * Return: return 0 on success, Error value if command fails.
+ * CMD_RET_USAGE incase of incorrect/missing parameters.
+ */
+static int do_versalnet_load_pdi(struct cmd_tbl *cmdtp, int flag, int argc,
+				 char * const argv[])
+{
+	u32 buf_lo, buf_hi;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	ulong addr, *pdi_buf;
+	size_t len;
+	int ret;
+
+	if (argc != cmdtp->maxargs) {
+		debug("pdi_load: incorrect parameters passed\n");
+		return CMD_RET_USAGE;
+	}
+
+	addr = simple_strtol(argv[1], NULL, 16);
+	if (!addr) {
+		debug("pdi_load: zero pdi_data address\n");
+		return CMD_RET_USAGE;
+	}
+
+	len = hextoul(argv[2], NULL);
+	if (!len) {
+		debug("pdi_load: zero size\n");
+		return CMD_RET_USAGE;
+	}
+
+	pdi_buf = (ulong *)ALIGN((ulong)addr, ARCH_DMA_MINALIGN);
+	if ((ulong)addr != (ulong)pdi_buf) {
+		memcpy((void *)pdi_buf, (void *)addr, len);
+		debug("Pdi addr:0x%lx aligned to 0x%lx\n",
+		      addr, (ulong)pdi_buf);
+	}
+
+	flush_dcache_range((ulong)pdi_buf, (ulong)pdi_buf + len);
+
+	buf_lo = lower_32_bits((ulong)pdi_buf);
+	buf_hi = upper_32_bits((ulong)pdi_buf);
+
+	ret = xilinx_pm_request(VERSAL_PM_LOAD_PDI, VERSAL_PM_PDI_TYPE, buf_lo,
+				buf_hi, 0, ret_payload);
+	if (ret)
+		printf("PDI load failed with err: 0x%08x\n", ret);
+
+	return cmd_process_error(cmdtp, ret);
+}
+
+static char versalnet_help_text[] =
+	"loadpdi addr len - Load pdi image\n"
+	"load pdi image at ddr address 'addr' with pdi image size 'len'\n"
+;
+
+U_BOOT_CMD_WITH_SUBCMDS(versalnet, "Versal NET sub-system", versalnet_help_text,
+			U_BOOT_SUBCMD_MKENT(loadpdi, 3, 1,
+					    do_versalnet_load_pdi));