mvebu: ds414: Implement Synology specific command set
Synology keeps per item configuration in a dedicated 'partition' in SPI
flash, namely the one named 'vendor' in DTS file. It contains the two
NICs MAC addresses as well as the item's serial number. I didn't find a
way to have this information extracted automatically, therefore
implemented 'syno populate_env' command which extracts the three values
and puts them into environment. To make things permanent though, one has
to 'saveenv'.
Another command is 'syno clk_gate', which allows to change the clock
gating which is done in DS414 board file.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Stefan Roese <sr@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/Synology/common/cmd_syno.c b/board/Synology/common/cmd_syno.c
new file mode 100644
index 0000000..20544e2
--- /dev/null
+++ b/board/Synology/common/cmd_syno.c
@@ -0,0 +1,227 @@
+/*
+ * Commands to deal with Synology specifics.
+ *
+ * Copyright (C) 2015 Phil Sutter <phil@nwl.cc>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#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 ETH_ALEN 6
+#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);
+ setenv(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);
+ setenv("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);
+ setenv("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"
+);