3 * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
6 * David Mueller, ELSOFT AG, d.mueller@elsoft.ch
8 * SPDX-License-Identifier: GPL-2.0+
15 #include "../common/common_util.h"
17 #if defined(CONFIG_CS8900)
18 #include <../drivers/net/cs8900.h>
20 static uchar cs8900_chksum(ushort data)
22 return((data >> 8) & 0x00FF) + (data & 0x00FF);
27 DECLARE_GLOBAL_DATA_PTR;
29 /* ------------------------------------------------------------------------- */
31 int do_vcma9(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
33 struct eth_device *dev;
35 if (strcmp(argv[1], "info") == 0)
40 #if defined(CONFIG_CS8900)
41 if (strcmp(argv[1], "cs8900") == 0) {
42 sprintf(cs8900_name, "%s-0", CS8900_DRIVERNAME);
43 dev = eth_get_dev_by_name(cs8900_name);
45 printf("Couldn't find CS8900 driver");
48 if (strcmp(argv[2], "read") == 0) {
49 uchar addr; ushort data;
51 addr = simple_strtoul(argv[3], NULL, 16);
52 cs8900_e2prom_read(dev, addr, &data);
53 printf("0x%2.2X: 0x%4.4X\n", addr, data);
54 } else if (strcmp(argv[2], "write") == 0) {
55 uchar addr; ushort data;
57 addr = simple_strtoul(argv[3], NULL, 16);
58 data = simple_strtoul(argv[4], NULL, 16);
59 cs8900_e2prom_write(dev, addr, data);
60 } else if (strcmp(argv[2], "setaddr") == 0) {
61 uchar addr, i, csum; ushort data;
64 /* check for valid ethaddr */
65 if (eth_getenv_enetaddr("ethaddr", ethaddr)) {
68 cs8900_e2prom_write(dev, addr, data);
69 csum = cs8900_chksum(data);
71 for (i = 0; i < 6; i+=2) {
72 data = ethaddr[i+1] << 8 |
74 cs8900_e2prom_write(dev, addr, data);
75 csum += cs8900_chksum(data);
78 /* calculate header link byte */
79 data = 0xA100 | (addr * 2);
80 cs8900_e2prom_write(dev, 0, data);
81 csum += cs8900_chksum(data);
82 /* write checksum word */
83 cs8900_e2prom_write(dev, addr, (0 - csum) << 8);
85 puts("\nplease defined 'ethaddr'\n");
87 } else if (strcmp(argv[2], "dump") == 0) {
88 uchar addr = 0, endaddr, csum; ushort data;
90 puts("Dump of CS8900 config device: ");
91 cs8900_e2prom_read(dev, addr, &data);
92 if ((data & 0xE000) == 0xA000) {
93 endaddr = (data & 0x00FF) / 2;
94 csum = cs8900_chksum(data);
95 for (addr = 1; addr <= endaddr; addr++) {
96 cs8900_e2prom_read(dev, addr, &data);
97 printf("\n0x%2.2X: 0x%4.4X", addr, data);
98 csum += cs8900_chksum(data);
100 printf("\nChecksum: %s", (csum == 0) ? "ok" : "wrong");
102 puts("no valid config found");
111 return (do_mplcommon(cmdtp, flag, argc, argv));
115 vcma9, 6, 1, do_vcma9,
116 "VCMA9 specific commands",
117 "flash mem [SrcAddr] - updates U-Boot with image in memory\n"
118 "vcma9 info - displays board information"