本帖最后由 0522 于 2012-3-21 23:04 编辑
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# t. g5 W! ?* f+ n; j" R需要 交叉开发工具 cross-compiler-armv5l.tar.bz2- #include <fcntl.h>
7 ^0 R. R8 A) @: x* ^# @* _( ? - #include <malloc.h>% V; K- _9 c3 a( l- P
- #include <sys/types.h># `$ s) u- I# `+ R, ^2 `' v
- #include <sys/stat.h>6 F& P. I/ M% Z
- #include <sys/ioctl.h>
0 J& b2 w* s5 j- R - #include <stdio.h>$ b6 h6 K6 Y5 S- N
- #include <string.h>
+ g1 \ X7 X& r4 C1 D5 O- I/ \; i - 8 N* w# R% t. D" f5 r$ {
- typedef struct {
8 ?$ ]9 i* h1 r5 W' y4 T# Q - unsigned int e2prom_cmd_sub_addr;4 o' T! t7 H/ ]3 G. {
- unsigned int sub_addr_count;& D' ^$ S" R% Z1 q0 {8 E: y2 d- r) Y
- unsigned char* e2prom_cmd_data;" E0 T6 p0 x5 y+ H0 y* A: h
- unsigned int data_count;$ s: ` n7 _4 a; ?9 b) D. X
- } e2prom_s_cmd;
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6 R) ^- e# s7 l0 }' K5 {8 l( ]- #define E2PROM_CMD_READ 1
+ J& K# j& ?: I; S8 f - #define E2PROM_CMD_WRITE 2! I4 ]1 y- S$ r2 ?5 R
- #define E2PROM_DEVICE "/dev/misc/e2prom_24lc16"
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4 V9 H( ]# q- C; P- static int readparam(unsigned char *mac, unsigned char *stbid). i$ W$ i4 j) z* p+ d& Q3 C3 ^
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- int fd, ret;
) @+ W1 W K: X5 V; y( J/ R - e2prom_s_cmd arg;1 E& u* W$ y6 m3 A+ E3 m) u6 Y
- unsigned char buf[0x18];
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. j4 H/ {% X" [5 |; m- fd = open(E2PROM_DEVICE, O_RDWR);1 E1 a4 M9 L! T, x( Z' P
- if (fd < 0) {
& l' V' |# @; b0 L - printf("Device %s open error.\n", E2PROM_DEVICE);
$ n/ ]6 L U$ t6 |; u - return -1;
; _% \1 \9 D# I9 d9 F N - }
! L# y. r, z( u0 z# P - arg.sub_addr_count = 2;
3 x/ {8 B- Y" t1 h& z - arg.data_count = 0x18;% `# `* }9 h/ u/ K8 o) D8 d
- arg.e2prom_cmd_sub_addr = 0x290;
1 m( ~& |+ ?9 q) u2 X/ i4 Y* D - arg.e2prom_cmd_data = buf;2 m$ j" o7 @3 ^ a- I4 s! G
- ret = ioctl(fd, E2PROM_CMD_READ, &arg);* |! X! w4 f* f) |
- if (ret != 0) {
" r4 K- d6 C8 v5 ]9 ? - printf("Device %s read error.\n", E2PROM_DEVICE);
; D+ ]5 o3 D4 [4 u, s - return -1;* j$ s- w: b' a1 T9 y! f1 \ h
- }
* j ^. q* L% q# n$ k" { - memcpy(mac, buf, 6);
7 ~0 \7 Y5 z" `9 F - memcpy(stbid, &buf[6], 18);+ q2 D' D" ]: q) j, k7 l" L
- stbid[18] = '\0';
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: {1 h) n) @) P, m# \$ J- return 0;
4 Y, ~" p$ Y( q" x - }
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# p0 [1 v* ]. a; o7 c$ {- static int writeparam(unsigned char *mac, unsigned char *stbid)
% B. L1 W+ _: y$ J: v - {
, K' e7 [) w" A% y( j - int fd, ret;
# e8 ^4 n4 X6 E6 V: L0 ~ - e2prom_s_cmd arg;- l* {1 V5 P7 p* o
- unsigned char buf[0x18];
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- memcpy(buf, mac, 6);2 }6 s! Z6 K2 u9 r+ \8 X: |
- memcpy(&buf[6], stbid, 18);
' K$ ~( Q. I) K) I" w. V3 c - fd = open(E2PROM_DEVICE, O_RDWR);
' B! @: k2 ~" ]! D0 ?+ O; N - if (fd < 0) {, u. t8 G1 c+ V# F* y5 _3 l$ R
- printf("Device %s open error.\n", E2PROM_DEVICE);
4 l2 c# F- @: ^ [. j7 C* Z - return -1;. W0 |3 ]$ k; j8 N( T
- }
. X" ^8 M9 S0 ]5 | - arg.sub_addr_count = 2;
$ Q' a' G+ h) T4 u8 w5 t& K4 e! b - arg.data_count = 0x18;' I# \" V% C7 u( t
- arg.e2prom_cmd_sub_addr = 0x290;
' }8 f6 @/ y; c o% [7 I* k0 G - arg.e2prom_cmd_data = buf;' t, x. Q9 J: B& y s: G" ?3 l, }
- ret = ioctl(fd, E2PROM_CMD_WRITE, &arg);
+ |1 l- n1 {1 z: L+ M+ w% s - if (ret != 0) {
. Y) v% e2 W3 I: N1 E: b& S) ^ - printf("Device %s write error.\n", E2PROM_DEVICE);
# J" P. Z$ d! m7 a7 `" E; B. a6 E - return -1; K# l) Q M' a9 \3 F( R9 {
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/ t6 ?: Y1 y- n) n% B, i) ^- return 0;
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+ a3 Z! E9 s% t" d5 _' ^- int main()8 O1 @5 ~% o& y: X A2 z# E# q
- {* i8 b# P/ ?' C( A
- char c;3 {3 q9 F- u2 n# e6 ^3 K) F
- int i, macs[6];; J* j9 c* W5 h! K5 S. }6 ~9 q5 N
- unsigned char mac[6];7 r0 M4 S! |9 L
- unsigned char stbid[256];
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% `$ B$ R& ?3 A- }# c% b% @5 D: g- if (readparam(mac, stbid) < 0)* L2 M. l2 W& e
- return 1;6 _8 C; M7 p+ \1 b) d& B- L2 B
( a+ x% V4 U% a. ~; d1 `- printf("Current parameters: \n");8 F, X$ P3 f4 e- ~$ `8 c
- printf(" MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);% Z" g# g6 p7 D% B; B x. V
- printf(" STBID: %s\n", stbid);; V4 U9 ~6 V) k8 M, A! e
- 1 D1 G- F' y+ m4 L2 f, P
- printf("\nPlease input new MAC (1a:2b:3c:4d:5e:6f): ");
- H8 G* v: z& Z/ i" ?# P4 v - if (scanf("%02x:%02x:%02x:%02x:%02x:%02x", &macs[0], &macs[1], &macs[2], &macs[3], &macs[4], &macs[5]) != 6) {& U: E. h/ Y) w1 u& w! m* H- H: \
- printf("Input MAC error\n");
' H& d9 c3 e, {/ K - return 1;
1 r/ a- ~( `+ h6 i: _5 T7 \7 m5 j - }
( ]9 i, r2 \* @: q) N* b - for (i=0; i<6; i++)mac[i] = macs[i];
3 t2 O0 q$ k1 N1 S - printf("\nPlease input new STBID: ");
k: w, Y, W8 J+ {4 _9 Q - scanf("%s", stbid);( k" {0 M5 a+ u* G* \- q
- if (strlen(stbid) != 18) {( L8 K( m1 S* F7 X4 B% S
- printf("Invalid stbid\n");
# }' v, ~4 r, H - return 1;
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- printf("\nNew parameters: \n");
" ^8 E$ K7 Z9 K6 w - printf(" MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
' B9 I. }9 L+ X& N - printf(" STBID: %s\n", stbid);
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- printf("\nDo you want to change paramemters? (y/N) ");
* C4 S/ i; _9 X. \' A$ s! o - for (;;) {
8 e4 H, E i8 o% ~+ e8 G - c = getchar();
, G/ @5 H7 P. m3 k/ ~. z6 M - if (c == 'y' || c == 'Y')3 f1 }# i$ b' M* k; y8 N) K, w
- break;: I; a9 }: @, c9 B$ G$ O
- if (c == 'n' || c == 'N') {
+ M- z1 ^2 L0 p! l% g - printf("\nAborted.\n");
, [$ V3 s& \% [ - return 1;
0 p4 C/ I! L, b. l- v( ?4 i - }
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- if (writeparam(mac, stbid) == 0) " r' D& I# _+ \6 i
- printf("Parameters changed.\n");2 {+ p; b; i# l, P. R$ J
' g0 a1 y, {* ?3 K$ e- return 0;0 E/ j. }: s9 n# T' y7 M
- }
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