Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / common / cmd_fuse.c

diff --git a/qemu/roms/u-boot/common/cmd_fuse.c b/qemu/roms/u-boot/common/cmd_fuse.c
new file mode 100644 (file)
index 0000000..0df57db
--- /dev/null
+++ b/qemu/roms/u-boot/common/cmd_fuse.c
@@ -0,0 +1,152 @@
+/*
+ * (C) Copyright 2009-2013 ADVANSEE
+ * Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
+ *
+ * Based on the mpc512x iim code:
+ * Copyright 2008 Silicon Turnkey Express, Inc.
+ * Martha Marx <mmarx@silicontkx.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <fuse.h>
+#include <asm/errno.h>
+
+static int strtou32(const char *str, unsigned int base, u32 *result)
+{
+       char *ep;
+
+       *result = simple_strtoul(str, &ep, base);
+       if (ep == str || *ep != '\0')
+               return -EINVAL;
+
+       return 0;
+}
+
+static int confirm_prog(void)
+{
+       puts("Warning: Programming fuses is an irreversible operation!\n"
+                       "         This may brick your system.\n"
+                       "         Use this command only if you are sure of "
+                                       "what you are doing!\n"
+                       "\nReally perform this fuse programming? <y/N>\n");
+
+       if (getc() == 'y') {
+               int c;
+
+               putc('y');
+               c = getc();
+               putc('\n');
+               if (c == '\r')
+                       return 1;
+       }
+
+       puts("Fuse programming aborted\n");
+       return 0;
+}
+
+static int do_fuse(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+       const char *op = argc >= 2 ? argv[1] : NULL;
+       int confirmed = argc >= 3 && !strcmp(argv[2], "-y");
+       u32 bank, word, cnt, val;
+       int ret, i;
+
+       argc -= 2 + confirmed;
+       argv += 2 + confirmed;
+
+       if (argc < 2 || strtou32(argv[0], 0, &bank) ||
+                       strtou32(argv[1], 0, &word))
+               return CMD_RET_USAGE;
+
+       if (!strcmp(op, "read")) {
+               if (argc == 2)
+                       cnt = 1;
+               else if (argc != 3 || strtou32(argv[2], 0, &cnt))
+                       return CMD_RET_USAGE;
+
+               printf("Reading bank %u:\n", bank);
+               for (i = 0; i < cnt; i++, word++) {
+                       if (!(i % 4))
+                               printf("\nWord 0x%.8x:", word);
+
+                       ret = fuse_read(bank, word, &val);
+                       if (ret)
+                               goto err;
+
+                       printf(" %.8x", val);
+               }
+               putc('\n');
+       } else if (!strcmp(op, "sense")) {
+               if (argc == 2)
+                       cnt = 1;
+               else if (argc != 3 || strtou32(argv[2], 0, &cnt))
+                       return CMD_RET_USAGE;
+
+               printf("Sensing bank %u:\n", bank);
+               for (i = 0; i < cnt; i++, word++) {
+                       if (!(i % 4))
+                               printf("\nWord 0x%.8x:", word);
+
+                       ret = fuse_sense(bank, word, &val);
+                       if (ret)
+                               goto err;
+
+                       printf(" %.8x", val);
+               }
+               putc('\n');
+       } else if (!strcmp(op, "prog")) {
+               if (argc < 3)
+                       return CMD_RET_USAGE;
+
+               for (i = 2; i < argc; i++, word++) {
+                       if (strtou32(argv[i], 16, &val))
+                               return CMD_RET_USAGE;
+
+                       printf("Programming bank %u word 0x%.8x to 0x%.8x...\n",
+                                       bank, word, val);
+                       if (!confirmed && !confirm_prog())
+                               return CMD_RET_FAILURE;
+                       ret = fuse_prog(bank, word, val);
+                       if (ret)
+                               goto err;
+               }
+       } else if (!strcmp(op, "override")) {
+               if (argc < 3)
+                       return CMD_RET_USAGE;
+
+               for (i = 2; i < argc; i++, word++) {
+                       if (strtou32(argv[i], 16, &val))
+                               return CMD_RET_USAGE;
+
+                       printf("Overriding bank %u word 0x%.8x with "
+                                       "0x%.8x...\n", bank, word, val);
+                       ret = fuse_override(bank, word, val);
+                       if (ret)
+                               goto err;
+               }
+       } else {
+               return CMD_RET_USAGE;
+       }
+
+       return 0;
+
+err:
+       puts("ERROR\n");
+       return ret;
+}
+
+U_BOOT_CMD(
+       fuse, CONFIG_SYS_MAXARGS, 0, do_fuse,
+       "Fuse sub-system",
+            "read <bank> <word> [<cnt>] - read 1 or 'cnt' fuse words,\n"
+       "    starting at 'word'\n"
+       "fuse sense <bank> <word> [<cnt>] - sense 1 or 'cnt' fuse words,\n"
+       "    starting at 'word'\n"
+       "fuse prog [-y] <bank> <word> <hexval> [<hexval>...] - program 1 or\n"
+       "    several fuse words, starting at 'word' (PERMANENT)\n"
+       "fuse override <bank> <word> <hexval> [<hexval>...] - override 1 or\n"
+       "    several fuse words, starting at 'word'"
+);