Remove the cmd_ prefix from command files

[people/ms/u-boot.git] / cmd / blob.c

diff --git a/cmd/blob.c b/cmd/blob.c
new file mode 100644 (file)
index 0000000..ac8b268
--- /dev/null
+++ b/cmd/blob.c
@@ -0,0 +1,111 @@
+/*
+ *
+ * Command for encapsulating/decapsulating blob of memory.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <environment.h>
+#include <malloc.h>
+#include <asm/byteorder.h>
+#include <linux/compiler.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/**
+ * blob_decap() - Decapsulate the data as a blob
+ * @key_mod:   - Pointer to key modifier/key
+ * @src:       - Address of data to be decapsulated
+ * @dst:       - Address of data to be decapsulated
+ * @len:       - Size of data to be decapsulated
+ *
+ * Returns zero on success,and negative on error.
+ */
+__weak int blob_decap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
+{
+       return 0;
+}
+
+/**
+ * blob_encap() - Encapsulate the data as a blob
+ * @key_mod:   - Pointer to key modifier/key
+ * @src:       - Address of data to be encapsulated
+ * @dst:       - Address of data to be encapsulated
+ * @len:       - Size of data to be encapsulated
+ *
+ * Returns zero on success,and negative on error.
+ */
+__weak int blob_encap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
+{
+       return 0;
+}
+
+/**
+ * do_blob() - Handle the "blob" command-line command
+ * @cmdtp:     Command data struct pointer
+ * @flag:      Command flag
+ * @argc:      Command-line argument count
+ * @argv:      Array of command-line arguments
+ *
+ * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
+ * on error.
+ */
+static int do_blob(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+       uint32_t key_addr, src_addr, dst_addr, len;
+       uint8_t *km_ptr, *src_ptr, *dst_ptr;
+       int enc, ret = 0;
+
+       if (argc != 6)
+               return CMD_RET_USAGE;
+
+       if (!strncmp(argv[1], "enc", 3))
+               enc = 1;
+       else if (!strncmp(argv[1], "dec", 3))
+               enc = 0;
+       else
+               return CMD_RET_USAGE;
+
+       src_addr = simple_strtoul(argv[2], NULL, 16);
+       dst_addr = simple_strtoul(argv[3], NULL, 16);
+       len = simple_strtoul(argv[4], NULL, 16);
+       key_addr = simple_strtoul(argv[5], NULL, 16);
+
+       km_ptr = (uint8_t *)(uintptr_t)key_addr;
+       src_ptr = (uint8_t *)(uintptr_t)src_addr;
+       dst_ptr = (uint8_t *)(uintptr_t)dst_addr;
+
+       if (enc)
+               ret = blob_encap(km_ptr, src_ptr, dst_ptr, len);
+       else
+               ret = blob_decap(km_ptr, src_ptr, dst_ptr, len);
+
+       return ret;
+}
+
+/***************************************************/
+static char blob_help_text[] =
+       "enc src dst len km - Encapsulate and create blob of data\n"
+       "                          $len bytes long at address $src and\n"
+       "                          store the result at address $dst.\n"
+       "                          $km is the address where the key\n"
+       "                          modifier is stored.\n"
+       "                          The modifier is required for generation\n"
+       "                          /use as key for cryptographic operation.\n"
+       "                          Key modifier should be 16 byte long.\n"
+       "blob dec src dst len km - Decapsulate the  blob of data at address\n"
+       "                          $src and store result of $len byte at\n"
+       "                          addr $dst.\n"
+       "                          $km is the address where the key\n"
+       "                          modifier is stored.\n"
+       "                          The modifier is required for generation\n"
+       "                          /use as key for cryptographic operation.\n"
+       "                          Key modifier should be 16 byte long.\n";
+
+U_BOOT_CMD(
+       blob, 6, 1, do_blob,
+       "Blob encapsulation/decryption",
+       blob_help_text
+);