FreeCalypso > hg > freecalypso-tools

annotate target-utils/loadagent/amdflash.c @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents b34384991094
children
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1 /*
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2 * This module implements the AMFB and AMFW commands for programming
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3 * AMD-style flash memories. Syntax:
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4 *
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5 * AMFB <baseaddr> -- sets the base address for subsequent AMFW commands
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6 * AMFW <offset> <hexstring> -- the actual flash write operation
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7 *
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8 * The flash memory is assumed to be 16 bits wide. The hex string
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9 * argument to the AMFW command is just data, with no header, address,
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10 * length, checksum or other additions. The number of hex digits in the
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11 * string must be a multiple of 4, and the byte order is the same as
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12 * that of TI's *.m0 files: we interpret the string as consisting of
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13 * 16-bit words rather than bytes.
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14 *
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15 * The address to which each flash write is directed is the sum of the
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16 * base given to AMFB and the offset given to AMFW. The fixed offsets
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17 * of 0xAAA and 0x554 (0x555 and 0x2AA in words) prescribed for the flash
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18 * programming command sequence are also made from the base set with AMFB.
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19 */
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20
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21 #include <sys/types.h>
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22 #include "types.h"
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23
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24 static u32 base_addr;
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25
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26 void
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27 cmd_AMFB(argbulk)
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28 char *argbulk;
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29 {
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30 char *argv[2];
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31 u_long addr;
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32
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33 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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34 return;
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35 if (parse_hexarg(argv[0], 8, &addr) < 0) {
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36 printf("ERROR: argument must be a valid 32-bit hex address\n");
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37 return;
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38 }
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39 if (addr & 1) {
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40 printf("ERROR: odd address\n");
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41 return;
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42 }
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43 base_addr = addr;
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44 }
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45
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46 void
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47 cmd_AMFW(argbulk)
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48 char *argbulk;
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49 {
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50 char *argv[3], *s;
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51 u_long offset;
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52 volatile u16 *flashptr;
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53 u32 datum; /* needs to be u32 for decode_hex_digits() */
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54 int i;
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55
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56 if (parse_args(argbulk, 2, 2, argv, 0) < 0)
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57 return;
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58 if (parse_hexarg(argv[0], 8, &offset) < 0) {
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59 printf("ERROR: offset argument must a valid 32-bit hex value\n");
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60 return;
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61 }
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62 if (offset & 1) {
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63 printf("ERROR: odd offset argument\n");
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64 return;
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65 }
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66 flashptr = (volatile u16 *)(base_addr + offset);
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67 for (s = argv[1]; *s; flashptr++, s += 4) {
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68 if (decode_hex_digits(s, 4, &datum) < 0) {
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69 printf("ERROR: bad AMFW hex string argument\n");
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70 return;
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71 }
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72 if (*flashptr != 0xFFFF) {
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73 printf("ERROR: flash not blank at %08X\n",
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74 (u_long) flashptr);
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75 return;
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76 }
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77 *(volatile u16 *)(base_addr + 0xAAA) = 0xAA;
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78 *(volatile u16 *)(base_addr + 0x554) = 0x55;
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79 *(volatile u16 *)(base_addr + 0xAAA) = 0xA0;
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80 *flashptr = datum;
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81 for (i = 10000; i; i--)
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82 if (*flashptr == datum)
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83 break;
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84 if (!i) {
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85 printf("ERROR: flash write timeout at %08X\n",
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86 (u_long) flashptr);
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87 return;
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88 }
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89 }
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90 }
659
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91
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92 amdflash_binary_prog(offset, nwords, data)
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93 u32 offset;
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94 unsigned nwords;
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95 u16 *data;
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96 {
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97 volatile u16 *flashptr;
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98 int i;
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99
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100 flashptr = (volatile u16 *)(base_addr + offset);
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101 while (nwords) {
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102 if (*flashptr != 0xFFFF) {
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103 serial_out(0x15); /* NAK */
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104 printf("ERROR: flash not blank at %08X\n",
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105 (u_long) flashptr);
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106 return(-1);
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107 }
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108 *(volatile u16 *)(base_addr + 0xAAA) = 0xAA;
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109 *(volatile u16 *)(base_addr + 0x554) = 0x55;
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110 *(volatile u16 *)(base_addr + 0xAAA) = 0xA0;
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111 *flashptr = *data;
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112 for (i = 10000; i; i--)
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113 if (*flashptr == *data)
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114 break;
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115 if (!i) {
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116 serial_out(0x15); /* NAK */
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117 printf("ERROR: flash write timeout at %08X\n",
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118 (u_long) flashptr);
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119 return(-1);
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120 }
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121 flashptr++;
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122 data++;
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123 nwords--;
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124 }
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125 return(0);
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126 }
660
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127
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128 void
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129 cmd_AMFWB()
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130 {
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131 binary_flash_prog_main(amdflash_binary_prog);
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132 }