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// SPDX-License-Identifier: GPL-2.0+
/*
* Commands to deal with Synology specifics.
*
* Copyright (C) 2015 Phil Sutter <phil@nwl.cc>
*/
#include <common.h>
#include <div64.h>
#include <spi.h>
#include <spi_flash.h>
#include <linux/mtd/mtd.h>
#include <asm/io.h>
#include "../drivers/ddr/marvell/axp/ddr3_init.h"
#define ETHADDR_MAX 4
#define SYNO_SN_TAG "SN="
#define SYNO_CHKSUM_TAG "CHK="
static int do_syno_populate(int argc, char * const argv[])
{
unsigned int bus = CONFIG_SF_DEFAULT_BUS;
unsigned int cs = CONFIG_SF_DEFAULT_CS;
unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
unsigned int mode = CONFIG_SF_DEFAULT_MODE;
struct spi_flash *flash;
unsigned long addr = 0x80000; /* XXX: parameterize this? */
loff_t offset = 0x007d0000;
loff_t len = 0x00010000;
char *buf, *bufp;
char var[128];
char val[128];
int ret, n;
/* XXX: arg parsing to select flash here? */
flash = spi_flash_probe(bus, cs, speed, mode);
if (!flash) {
printf("Failed to initialize SPI flash at %u:%u\n", bus, cs);
return 1;
}
buf = map_physmem(addr, len, MAP_WRBACK);
if (!buf) {
puts("Failed to map physical memory\n");
return 1;
}
ret = spi_flash_read(flash, offset, len, buf);
if (ret) {
puts("Failed to read from SPI flash\n");
goto out_unmap;
}
for (n = 0; n < ETHADDR_MAX; n++) {
char ethaddr[ETH_ALEN];
int i, sum = 0;
unsigned char csum = 0;
for (i = 0, bufp = buf + n * 7; i < ETH_ALEN; i++) {
sum += bufp[i];
csum += bufp[i];
ethaddr[i] = bufp[i];
}
if (!sum) /* MAC address empty */
continue;
if (csum != bufp[i]) { /* seventh byte is checksum value */
printf("Invalid MAC address for interface %d!\n", n);
continue;
}
if (n == 0)
sprintf(var, "ethaddr");
else
sprintf(var, "eth%daddr", n);
snprintf(val, sizeof(val) - 1,
"%02x:%02x:%02x:%02x:%02x:%02x",
ethaddr[0], ethaddr[1], ethaddr[2],
ethaddr[3], ethaddr[4], ethaddr[5]);
printf("parsed %s = %s\n", var, val);
env_set(var, val);
}
if (!strncmp(buf + 32, SYNO_SN_TAG, strlen(SYNO_SN_TAG))) {
char *snp, *csump;
int csum = 0;
unsigned long c;
snp = bufp = buf + 32 + strlen(SYNO_SN_TAG);
for (n = 0; bufp[n] && bufp[n] != ','; n++)
csum += bufp[n];
bufp[n] = '\0';
/* should come right after, but you never know */
bufp = strstr(bufp + n + 1, SYNO_CHKSUM_TAG);
if (!bufp) {
printf("Serial number checksum tag missing!\n");
goto out_unmap;
}
csump = bufp += strlen(SYNO_CHKSUM_TAG);
for (n = 0; bufp[n] && bufp[n] != ','; n++)
;
bufp[n] = '\0';
if (strict_strtoul(csump, 10, &c) || c != csum) {
puts("Invalid serial number found!\n");
ret = 1;
goto out_unmap;
}
printf("parsed SN = %s\n", snp);
env_set("SN", snp);
} else { /* old style format */
unsigned char csum = 0;
for (n = 0, bufp = buf + 32; n < 10; n++)
csum += bufp[n];
if (csum != bufp[n]) {
puts("Invalid serial number found!\n");
ret = 1;
goto out_unmap;
}
bufp[n] = '\0';
printf("parsed SN = %s\n", buf + 32);
env_set("SN", buf + 32);
}
out_unmap:
unmap_physmem(buf, len);
return ret;
}
/* map bit position to function in POWER_MNG_CTRL_REG */
static const char * const pwr_mng_bit_func[] = {
"audio",
"ge3", "ge2", "ge1", "ge0",
"pcie00", "pcie01", "pcie02", "pcie03",
"pcie10", "pcie11", "pcie12", "pcie13",
"bp",
"sata0_link", "sata0_core",
"lcd",
"sdio",
"usb0", "usb1", "usb2",
"idma", "xor0", "crypto",
NULL,
"tdm",
"pcie20", "pcie30",
"xor1",
"sata1_link", "sata1_core",
NULL,
};
static int do_syno_clk_gate(int argc, char * const argv[])
{
u32 pwr_mng_ctrl_reg = reg_read(POWER_MNG_CTRL_REG);
const char *func, *state;
int i, val;
if (argc < 2)
return -1;
if (!strcmp(argv[1], "get")) {
puts("Clock Gating:\n");
for (i = 0; i < 32; i++) {
func = pwr_mng_bit_func[i];
if (!func)
continue;
state = pwr_mng_ctrl_reg & (1 << i) ? "ON" : "OFF";
printf("%s:\t\t%s\n", func, state);
}
return 0;
}
if (argc < 4)
return -1;
if (!strcmp(argv[1], "set")) {
func = argv[2];
state = argv[3];
for (i = 0; i < 32; i++) {
if (!pwr_mng_bit_func[i])
continue;
if (!strcmp(func, pwr_mng_bit_func[i]))
break;
}
if (i == 32) {
printf("Error: name '%s' not known\n", func);
return -1;
}
val = state[0] != '0';
pwr_mng_ctrl_reg |= (val << i);
pwr_mng_ctrl_reg &= ~(!val << i);
reg_write(POWER_MNG_CTRL_REG, pwr_mng_ctrl_reg);
}
return 0;
}
static int do_syno(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
const char *cmd;
int ret = 0;
if (argc < 2)
goto usage;
cmd = argv[1];
--argc;
++argv;
if (!strcmp(cmd, "populate_env"))
ret = do_syno_populate(argc, argv);
else if (!strcmp(cmd, "clk_gate"))
ret = do_syno_clk_gate(argc, argv);
if (ret != -1)
return ret;
usage:
return CMD_RET_USAGE;
}
U_BOOT_CMD(
syno, 5, 1, do_syno,
"Synology specific commands",
"populate_env - Read vendor data from SPI flash into environment\n"
"clk_gate (get|set name 1|0) - Manage clock gating\n"
);
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