projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 69910a28 MS |
1 | /* |
| 2 | * Miscellaneous SoC-specific hooks. | |
| 3 | * | |
| 4 | * Copyright (C) 2011 Texas Instruments Incorporated | |
| 5 | * Author: Mark Salter <[email protected]> | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License version 2 as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | */ | |
| 11 | #include <linux/module.h> | |
| 12 | #include <linux/ctype.h> | |
| 13 | #include <linux/etherdevice.h> | |
| 69910a28 MS |
14 | #include <asm/setup.h> |
| 15 | #include <asm/soc.h> | |
| 16 | ||
| 17 | struct soc_ops soc_ops; | |
| 18 | ||
| 19 | int soc_get_exception(void) | |
| 20 | { | |
| 21 | if (!soc_ops.get_exception) | |
| 22 | return -1; | |
| 23 | return soc_ops.get_exception(); | |
| 24 | } | |
| 25 | ||
| 26 | void soc_assert_event(unsigned int evt) | |
| 27 | { | |
| 28 | if (soc_ops.assert_event) | |
| 29 | soc_ops.assert_event(evt); | |
| 30 | } | |
| 31 | ||
| 32 | static u8 cmdline_mac[6]; | |
| 33 | ||
| 34 | static int __init get_mac_addr_from_cmdline(char *str) | |
| 35 | { | |
| 36 | int count, i, val; | |
| 37 | ||
| 38 | for (count = 0; count < 6 && *str; count++, str += 3) { | |
| 39 | if (!isxdigit(str[0]) || !isxdigit(str[1])) | |
| 40 | return 0; | |
| 41 | if (str[2] != ((count < 5) ? ':' : '\0')) | |
| 42 | return 0; | |
| 43 | ||
| 44 | for (i = 0, val = 0; i < 2; i++) { | |
| 45 | val = val << 4; | |
| 46 | val |= isdigit(str[i]) ? | |
| 47 | str[i] - '0' : toupper(str[i]) - 'A' + 10; | |
| 48 | } | |
| 49 | cmdline_mac[count] = val; | |
| 50 | } | |
| 51 | return 1; | |
| 52 | } | |
| 53 | __setup("emac_addr=", get_mac_addr_from_cmdline); | |
| 54 | ||
| 55 | /* | |
| 56 | * Setup the MAC address for SoC ethernet devices. | |
| 57 | * | |
| 58 | * Before calling this function, the ethernet driver will have | |
| 59 | * initialized the addr with local-mac-address from the device | |
| 60 | * tree (if found). Allow command line to override, but not | |
| 61 | * the fused address. | |
| 62 | */ | |
| 63 | int soc_mac_addr(unsigned int index, u8 *addr) | |
| 64 | { | |
| 65 | int i, have_dt_mac = 0, have_cmdline_mac = 0, have_fuse_mac = 0; | |
| 66 | ||
| 67 | for (i = 0; i < 6; i++) { | |
| 68 | if (cmdline_mac[i]) | |
| 69 | have_cmdline_mac = 1; | |
| 70 | if (c6x_fuse_mac[i]) | |
| 71 | have_fuse_mac = 1; | |
| 72 | if (addr[i]) | |
| 73 | have_dt_mac = 1; | |
| 74 | } | |
| 75 | ||
| 76 | /* cmdline overrides all */ | |
| 77 | if (have_cmdline_mac) | |
| 78 | memcpy(addr, cmdline_mac, 6); | |
| 79 | else if (!have_dt_mac) { | |
| 80 | if (have_fuse_mac) | |
| 81 | memcpy(addr, c6x_fuse_mac, 6); | |
| 82 | else | |
| 6e5928f6 | 83 | eth_random_addr(addr); |
| 69910a28 MS |
84 | } |
| 85 | ||
| 86 | /* adjust for specific EMAC device */ | |
| 87 | addr[5] += index * c6x_num_cores; | |
| 88 | return 1; | |
| 89 | } | |
| 90 | EXPORT_SYMBOL_GPL(soc_mac_addr); |