FreeCalypso > hg > freecalypso-tools

annotate target-utils/loadagent/amdflash.c @ 1014:961efadd530a default tip

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fc-shell TCH DL handler: add support for CSD modes TCH DL capture mechanism in FC Tourmaline firmware has been extended to support CSD modes in addition to speech - add the necessary support on the host tools side. It needs to be noted that this mechanism in its present state does NOT provide the debug utility value that was sought: as we learned only after the code was implemented, TI's DSP has a misfeature in that the buffer we are reading (a_dd_0[]) is zeroed out when the IDS block is enabled, i.e., we are reading all zeros and not the real DL bits we were after. But since the code has already been written, we are keeping it - perhaps we can do some tests with IDS disabled.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 26 Nov 2024 06:27:43 +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",
761e8b0c65b0 loadagent: first step in implementation of binary flash programming
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118 (u_long) flashptr);
761e8b0c65b0 loadagent: first step in implementation of binary flash programming
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119 return(-1);
761e8b0c65b0 loadagent: first step in implementation of binary flash programming
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120 }
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121 flashptr++;
761e8b0c65b0 loadagent: first step in implementation of binary flash programming
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122 data++;
761e8b0c65b0 loadagent: first step in implementation of binary flash programming
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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 }