board/Synology/ds414/cmd_syno.c

   1 /*
   2  * Commands to deal with Synology specifics.
   3  *
   4  * Copyright (C) 2015  Phil Sutter <phil@nwl.cc>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <div64.h>
  11 #include <spi.h>
  12 #include <spi_flash.h>
  13 #include <linux/mtd/mtd.h>
  14
  15 #include <asm/io.h>
  16 #include "../drivers/ddr/marvell/axp/ddr3_init.h"
  17
  18 #define ETH_ALEN                6
  19 #define ETHADDR_MAX             4
  20 #define SYNO_SN_TAG             "SN="
  21 #define SYNO_CHKSUM_TAG         "CHK="
  22
  23
  24 static int do_syno_populate(int argc, char * const argv[])
  25 {
  26         unsigned int bus = CONFIG_SF_DEFAULT_BUS;
  27         unsigned int cs = CONFIG_SF_DEFAULT_CS;
  28         unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
  29         unsigned int mode = CONFIG_SF_DEFAULT_MODE;
  30         struct spi_flash *flash;
  31         unsigned long addr = 0x80000; /* XXX: parameterize this? */
  32         loff_t offset = 0x007d0000;
  33         loff_t len = 0x00010000;
  34         char *buf, *bufp;
  35         char var[128];
  36         char val[128];
  37         int ret, n;
  38
  39         /* XXX: arg parsing to select flash here? */
  40
  41         flash = spi_flash_probe(bus, cs, speed, mode);
  42         if (!flash) {
  43                 printf("Failed to initialize SPI flash at %u:%u\n", bus, cs);
  44                 return 1;
  45         }
  46
  47         buf = map_physmem(addr, len, MAP_WRBACK);
  48         if (!buf) {
  49                 puts("Failed to map physical memory\n");
  50                 return 1;
  51         }
  52
  53         ret = spi_flash_read(flash, offset, len, buf);
  54         if (ret) {
  55                 puts("Failed to read from SPI flash\n");
  56                 goto out_unmap;
  57         }
  58
  59         for (n = 0; n < ETHADDR_MAX; n++) {
  60                 char ethaddr[ETH_ALEN];
  61                 int i, sum = 0;
  62                 unsigned char csum = 0;
  63
  64                 for (i = 0, bufp = buf + n * 7; i < ETH_ALEN; i++) {
  65                         sum += bufp[i];
  66                         csum += bufp[i];
  67                         ethaddr[i] = bufp[i];
  68                 }
  69                 if (!sum)               /* MAC address empty */
  70                         continue;
  71                 if (csum != bufp[i]) {  /* seventh byte is checksum value */
  72                         printf("Invalid MAC address for interface %d!\n", n);
  73                         continue;
  74                 }
  75                 if (n == 0)
  76                         sprintf(var, "ethaddr");
  77                 else
  78                         sprintf(var, "eth%daddr", n);
  79                 snprintf(val, sizeof(val) - 1,
  80                          "%02x:%02x:%02x:%02x:%02x:%02x",
  81                          ethaddr[0], ethaddr[1], ethaddr[2],
  82                          ethaddr[3], ethaddr[4], ethaddr[5]);
  83                 printf("parsed %s = %s\n", var, val);
  84                 env_set(var, val);
  85         }
  86         if (!strncmp(buf + 32, SYNO_SN_TAG, strlen(SYNO_SN_TAG))) {
  87                 char *snp, *csump;
  88                 int csum = 0;
  89                 unsigned long c;
  90
  91                 snp = bufp = buf + 32 + strlen(SYNO_SN_TAG);
  92                 for (n = 0; bufp[n] && bufp[n] != ','; n++)
  93                         csum += bufp[n];
  94                 bufp[n] = '\0';
  95
  96                 /* should come right after, but you never know */
  97                 bufp = strstr(bufp + n + 1, SYNO_CHKSUM_TAG);
  98                 if (!bufp) {
  99                         printf("Serial number checksum tag missing!\n");
 100                         goto out_unmap;
 101                 }
 102
 103                 csump = bufp += strlen(SYNO_CHKSUM_TAG);
 104                 for (n = 0; bufp[n] && bufp[n] != ','; n++)
 105                         ;
 106                 bufp[n] = '\0';
 107
 108                 if (strict_strtoul(csump, 10, &c) || c != csum) {
 109                         puts("Invalid serial number found!\n");
 110                         ret = 1;
 111                         goto out_unmap;
 112                 }
 113                 printf("parsed SN = %s\n", snp);
 114                 env_set("SN", snp);
 115         } else {        /* old style format */
 116                 unsigned char csum = 0;
 117
 118                 for (n = 0, bufp = buf + 32; n < 10; n++)
 119                         csum += bufp[n];
 120
 121                 if (csum != bufp[n]) {
 122                         puts("Invalid serial number found!\n");
 123                         ret = 1;
 124                         goto out_unmap;
 125                 }
 126                 bufp[n] = '\0';
 127                 printf("parsed SN = %s\n", buf + 32);
 128                 env_set("SN", buf + 32);
 129         }
 130 out_unmap:
 131         unmap_physmem(buf, len);
 132         return ret;
 133 }
 134
 135 /* map bit position to function in POWER_MNG_CTRL_REG */
 136 static const char * const pwr_mng_bit_func[] = {
 137         "audio",
 138         "ge3", "ge2", "ge1", "ge0",
 139         "pcie00", "pcie01", "pcie02", "pcie03",
 140         "pcie10", "pcie11", "pcie12", "pcie13",
 141         "bp",
 142         "sata0_link", "sata0_core",
 143         "lcd",
 144         "sdio",
 145         "usb0", "usb1", "usb2",
 146         "idma", "xor0", "crypto",
 147         NULL,
 148         "tdm",
 149         "pcie20", "pcie30",
 150         "xor1",
 151         "sata1_link", "sata1_core",
 152         NULL,
 153 };
 154
 155 static int do_syno_clk_gate(int argc, char * const argv[])
 156 {
 157         u32 pwr_mng_ctrl_reg = reg_read(POWER_MNG_CTRL_REG);
 158         const char *func, *state;
 159         int i, val;
 160
 161         if (argc < 2)
 162                 return -1;
 163
 164         if (!strcmp(argv[1], "get")) {
 165                 puts("Clock Gating:\n");
 166                 for (i = 0; i < 32; i++) {
 167                         func = pwr_mng_bit_func[i];
 168                         if (!func)
 169                                 continue;
 170                         state = pwr_mng_ctrl_reg & (1 << i) ?  "ON" : "OFF";
 171                         printf("%s:\t\t%s\n", func, state);
 172                 }
 173                 return 0;
 174         }
 175         if (argc < 4)
 176                 return -1;
 177         if (!strcmp(argv[1], "set")) {
 178                 func = argv[2];
 179                 state = argv[3];
 180                 for (i = 0; i < 32; i++) {
 181                         if (!pwr_mng_bit_func[i])
 182                                 continue;
 183                         if (!strcmp(func, pwr_mng_bit_func[i]))
 184                                 break;
 185                 }
 186                 if (i == 32) {
 187                         printf("Error: name '%s' not known\n", func);
 188                         return -1;
 189                 }
 190                 val = state[0] != '0';
 191                 pwr_mng_ctrl_reg |= (val << i);
 192                 pwr_mng_ctrl_reg &= ~(!val << i);
 193                 reg_write(POWER_MNG_CTRL_REG, pwr_mng_ctrl_reg);
 194         }
 195         return 0;
 196 }
 197
 198 static int do_syno(cmd_tbl_t *cmdtp, int flag,
 199                    int argc, char * const argv[])
 200 {
 201         const char *cmd;
 202         int ret = 0;
 203
 204         if (argc < 2)
 205                 goto usage;
 206
 207         cmd = argv[1];
 208         --argc;
 209         ++argv;
 210
 211         if (!strcmp(cmd, "populate_env"))
 212                 ret = do_syno_populate(argc, argv);
 213         else if (!strcmp(cmd, "clk_gate"))
 214                 ret = do_syno_clk_gate(argc, argv);
 215
 216         if (ret != -1)
 217                 return ret;
 218 usage:
 219         return CMD_RET_USAGE;
 220 }
 221
 222 U_BOOT_CMD(
 223         syno, 5, 1, do_syno,
 224         "Synology specific commands",
 225         "populate_env                 - Read vendor data from SPI flash into environment\n"
 226         "clk_gate (get|set name 1|0)  - Manage clock gating\n"
 227 );