1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2018 Marek Behun <marek.behun@nic.cz>
7 #include <asm/arch/cpu.h>
8 #include <asm/arch/soc.h>
10 #include <asm/global_data.h>
17 #include <fdt_support.h>
20 #include <linux/delay.h>
21 #include <linux/libfdt.h>
22 #include <linux/string.h>
28 #define MAX_MOX_MODULES 10
30 #define MOX_MODULE_SFP 0x1
31 #define MOX_MODULE_PCI 0x2
32 #define MOX_MODULE_TOPAZ 0x3
33 #define MOX_MODULE_PERIDOT 0x4
34 #define MOX_MODULE_USB3 0x5
35 #define MOX_MODULE_PASSPCI 0x6
37 #define ARMADA_37XX_NB_GPIO_SEL (MVEBU_REGISTER(0x13830))
38 #define ARMADA_37XX_SPI_CTRL (MVEBU_REGISTER(0x10600))
39 #define ARMADA_37XX_SPI_CFG (MVEBU_REGISTER(0x10604))
40 #define ARMADA_37XX_SPI_DOUT (MVEBU_REGISTER(0x10608))
41 #define ARMADA_37XX_SPI_DIN (MVEBU_REGISTER(0x1060c))
43 DECLARE_GLOBAL_DATA_PTR;
45 #if defined(CONFIG_OF_BOARD_FIXUP)
46 int board_fix_fdt(void *blob)
48 enum fdt_status status_pcie, status_eth1;
49 u8 topology[MAX_MOX_MODULES];
54 * SPI driver is not loaded in driver model yet, but we have to find out
55 * if pcie should be enabled in U-Boot's device tree. Therefore we have
56 * to read SPI by reading/writing SPI registers directly
59 /* put pin from GPIO to SPI mode */
60 clrbits_le32(ARMADA_37XX_NB_GPIO_SEL, BIT(12));
61 /* configure cpol, cpha, prescale */
62 writel(0x10df, ARMADA_37XX_SPI_CFG);
65 setbits_le32(ARMADA_37XX_SPI_CTRL, BIT(17));
67 while (!(readl(ARMADA_37XX_SPI_CTRL) & 0x2))
70 status_pcie = FDT_STATUS_DISABLED;
71 status_eth1 = FDT_STATUS_DISABLED;
74 for (i = 0; i < MAX_MOX_MODULES; ++i) {
75 writel(0x0, ARMADA_37XX_SPI_DOUT);
77 while (!(readl(ARMADA_37XX_SPI_CTRL) & 0x2))
80 topology[i] = readl(ARMADA_37XX_SPI_DIN) & 0xff;
81 if (topology[i] == 0xff)
86 if (topology[i] == MOX_MODULE_SFP &&
87 status_pcie == FDT_STATUS_DISABLED)
90 if (topology[i] == MOX_MODULE_SFP ||
91 topology[i] == MOX_MODULE_TOPAZ ||
92 topology[i] == MOX_MODULE_PERIDOT)
93 status_eth1 = FDT_STATUS_OKAY;
99 clrbits_le32(ARMADA_37XX_SPI_CTRL, BIT(17));
101 ret = fdt_set_status_by_alias(blob, "ethernet1", status_eth1);
103 printf("Cannot set status for eth1 in U-Boot's device tree: %s!\n",
107 ret = fdt_path_offset(blob, "ethernet1");
109 ret = fdt_setprop_string(blob, ret, "phy-mode", "sgmii");
111 printf("Cannot set phy-mode for eth1 to sgmii in U-Boot device tree: %s!\n",
115 if (size > 1 && (topology[1] == MOX_MODULE_PCI ||
116 topology[1] == MOX_MODULE_USB3 ||
117 topology[1] == MOX_MODULE_PASSPCI))
118 status_pcie = FDT_STATUS_OKAY;
120 ret = fdt_set_status_by_compatible(blob, "marvell,armada-3700-pcie",
123 printf("Cannot set status for PCIe in U-Boot's device tree: %s!\n",
128 if (a3700_fdt_fix_pcie_regions(blob) < 0) {
129 printf("Cannot fix PCIe regions in U-Boot's device tree!\n");
139 /* address of boot parameters */
140 gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
145 static int mox_do_spi(u8 *in, u8 *out, size_t size)
147 struct spi_slave *slave;
151 ret = spi_get_bus_and_cs(0, 1, 1000000, SPI_CPHA | SPI_CPOL,
152 "spi_generic_drv", "moxtet@1", &dev,
157 ret = spi_claim_bus(slave);
161 ret = spi_xfer(slave, size * 8, out, in, SPI_XFER_ONCE);
163 spi_release_bus(slave);
165 spi_free_slave(slave);
170 static int mox_get_topology(const u8 **ptopology, int *psize, int *pis_sd)
173 static u8 topology[MAX_MOX_MODULES - 1];
175 u8 din[MAX_MOX_MODULES], dout[MAX_MOX_MODULES];
180 *ptopology = topology;
188 memset(din, 0, MAX_MOX_MODULES);
189 memset(dout, 0, MAX_MOX_MODULES);
191 ret = mox_do_spi(din, dout, MAX_MOX_MODULES);
197 else if (din[0] == 0x00)
202 for (i = 1; i < MAX_MOX_MODULES && din[i] != 0xff; ++i)
203 topology[i - 1] = din[i] & 0xf;
207 *ptopology = topology;
216 #define SW_SMI_CMD_R(d, r) (0x9800 | (((d) & 0x1f) << 5) | ((r) & 0x1f))
217 #define SW_SMI_CMD_W(d, r) (0x9400 | (((d) & 0x1f) << 5) | ((r) & 0x1f))
219 static int sw_multi_read(struct mii_dev *bus, int sw, int dev, int reg)
221 bus->write(bus, sw, 0, 0, SW_SMI_CMD_R(dev, reg));
223 return bus->read(bus, sw, 0, 1);
226 static void sw_multi_write(struct mii_dev *bus, int sw, int dev, int reg,
229 bus->write(bus, sw, 0, 1, val);
230 bus->write(bus, sw, 0, 0, SW_SMI_CMD_W(dev, reg));
234 static int sw_scratch_read(struct mii_dev *bus, int sw, int reg)
236 sw_multi_write(bus, sw, 0x1c, 0x1a, (reg & 0x7f) << 8);
237 return sw_multi_read(bus, sw, 0x1c, 0x1a) & 0xff;
240 static void sw_led_write(struct mii_dev *bus, int sw, int port, int reg,
243 sw_multi_write(bus, sw, port, 0x16, 0x8000 | ((reg & 7) << 12)
247 static void sw_blink_leds(struct mii_dev *bus, int peridot, int topaz)
255 { 2, 0xef, 1 }, { 2, 0xfe, 1 }, { 2, 0x33, 0 },
256 { 4, 0xef, 1 }, { 4, 0xfe, 1 }, { 4, 0x33, 0 },
257 { 3, 0xfe, 1 }, { 3, 0xef, 1 }, { 3, 0x33, 0 },
258 { 1, 0xfe, 1 }, { 1, 0xef, 1 }, { 1, 0x33, 0 }
261 for (i = 0; i < 12; ++i) {
262 for (p = 0; p < peridot; ++p) {
263 sw_led_write(bus, 0x10 + p, regs[i].port, 0,
265 sw_led_write(bus, 0x10 + p, regs[i].port + 4, 0,
269 sw_led_write(bus, 0x2, 0x10 + regs[i].port, 0,
278 static void check_switch_address(struct mii_dev *bus, int addr)
280 if (sw_scratch_read(bus, addr, 0x70) >> 3 != addr)
281 printf("Check of switch MDIO address failed for 0x%02x\n",
285 static int sfp, pci, topaz, peridot, usb, passpci;
286 static int sfp_pos, peridot_pos[3];
287 static int module_count;
289 static int configure_peridots(struct gpio_desc *reset_gpio)
292 u8 dout[MAX_MOX_MODULES];
294 memset(dout, 0, MAX_MOX_MODULES);
296 /* set addresses of Peridot modules */
297 for (i = 0; i < peridot; ++i)
298 dout[module_count - peridot_pos[i]] = (~i) & 3;
301 * if there is a SFP module connected to the last Peridot module, set
302 * the P10_SMODE to 1 for the Peridot module
305 dout[module_count - peridot_pos[i - 1]] |= 1 << 3;
307 dm_gpio_set_value(reset_gpio, 1);
310 ret = mox_do_spi(NULL, dout, module_count + 1);
313 dm_gpio_set_value(reset_gpio, 0);
320 static int get_reset_gpio(struct gpio_desc *reset_gpio)
324 node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "cznic,moxtet");
326 printf("Cannot find Moxtet bus device node!\n");
330 gpio_request_by_name_nodev(offset_to_ofnode(node), "reset-gpios", 0,
331 reset_gpio, GPIOD_IS_OUT);
333 if (!dm_gpio_is_valid(reset_gpio)) {
334 printf("Cannot find reset GPIO for Moxtet bus!\n");
341 int misc_init_r(void)
346 ret = mbox_sp_get_board_info(NULL, mac[0], mac[1], NULL, NULL);
348 printf("Cannot read data from OTP!\n");
352 for (i = 0; i < 2; ++i) {
355 if (is_valid_ethaddr(mac[i]) &&
356 !eth_env_get_enetaddr_by_index("eth", i, oldmac))
357 eth_env_set_enetaddr_by_index("eth", i, mac[i]);
363 static void mox_phy_modify(struct phy_device *phydev, int page, int reg,
368 val = phydev->drv->readext(phydev, MDIO_DEVAD_NONE, page, reg);
371 phydev->drv->writeext(phydev, MDIO_DEVAD_NONE, page, reg, val);
374 static void mox_phy_leds_start_blinking(void)
376 struct phy_device *phydev;
378 const char *node_name;
381 node = fdt_path_offset(gd->fdt_blob, "ethernet0");
383 printf("Cannot get eth0!\n");
387 node_name = fdt_get_name(gd->fdt_blob, node, NULL);
389 printf("Cannot get eth0 node name!\n");
393 bus = miiphy_get_dev_by_name(node_name);
395 printf("Cannot get MDIO bus device!\n");
399 phydev = phy_find_by_mask(bus, BIT(1));
401 printf("Cannot get ethernet PHY!\n");
405 mox_phy_modify(phydev, 3, 0x12, 0x700, 0x400);
406 mox_phy_modify(phydev, 3, 0x10, 0xff, 0xbb);
409 static bool read_reset_button(void)
411 struct udevice *button, *led;
414 if (device_get_global_by_ofnode(
415 ofnode_first_subnode(ofnode_by_compatible(ofnode_null(),
418 printf("Cannot find reset button!\n");
422 if (device_get_global_by_ofnode(
423 ofnode_first_subnode(ofnode_by_compatible(ofnode_null(),
426 printf("Cannot find status LED!\n");
430 led_set_state(led, LEDST_ON);
432 for (i = 0; i < 21; ++i) {
433 if (button_get_state(button) != BUTTON_ON)
439 led_set_state(led, LEDST_OFF);
444 static void handle_reset_button(void)
446 const char * const vars[1] = { "bootcmd_rescue", };
449 * Ensure that bootcmd_rescue has always stock value, so that running
451 * always works correctly.
453 env_set_default_vars(1, (char * const *)vars, 0);
455 if (read_reset_button()) {
456 const char * const vars[2] = {
462 * Set the above envs to their default values, in case the user
463 * managed to break them.
465 env_set_default_vars(2, (char * const *)vars, 0);
467 /* Ensure bootcmd_rescue is used by distroboot */
468 env_set("boot_targets", "rescue");
470 /* start blinking PHY LEDs */
471 mox_phy_leds_start_blinking();
473 printf("RESET button was pressed, overwriting boot_targets!\n");
476 * In case the user somehow managed to save environment with
477 * boot_targets=rescue, reset boot_targets to default value.
478 * This could happen in subsequent commands if bootcmd_rescue
481 if (!strcmp(env_get("boot_targets"), "rescue")) {
482 const char * const vars[1] = {
486 env_set_default_vars(1, (char * const *)vars, 0);
491 int show_board_info(void)
493 int i, ret, board_version, ram_size, is_sd;
498 printf("Model: CZ.NIC Turris Mox Board\n");
500 ret = mbox_sp_get_board_info(&serial_number, NULL, NULL, &board_version,
503 printf(" Cannot read board info: %i\n", ret);
505 printf(" Board version: %i\n", board_version);
506 printf(" RAM size: %i MiB\n", ram_size);
507 printf(" Serial Number: %016llX\n", serial_number);
510 pub_key = mox_sp_get_ecdsa_public_key();
512 printf(" ECDSA Public Key: %s\n", pub_key);
514 printf(" Cannot read ECDSA Public Key\n");
516 ret = mox_get_topology(&topology, &module_count, &is_sd);
518 printf("Cannot read module topology!\n");
520 printf(" SD/eMMC version: %s\n", is_sd ? "SD" : "eMMC");
523 printf("Module Topology:\n");
525 for (i = 0; i < module_count; ++i) {
526 switch (topology[i]) {
528 printf("% 4i: SFP Module\n", i + 1);
531 printf("% 4i: Mini-PCIe Module\n", i + 1);
533 case MOX_MODULE_TOPAZ:
534 printf("% 4i: Topaz Switch Module (4-port)\n", i + 1);
536 case MOX_MODULE_PERIDOT:
537 printf("% 4i: Peridot Switch Module (8-port)\n", i + 1);
539 case MOX_MODULE_USB3:
540 printf("% 4i: USB 3.0 Module (4 ports)\n", i + 1);
542 case MOX_MODULE_PASSPCI:
543 printf("% 4i: Passthrough Mini-PCIe Module\n", i + 1);
546 printf("% 4i: unknown (ID %i)\n", i + 1, topology[i]);
550 /* check if modules are connected in supported mode */
551 for (i = 0; i < module_count; ++i) {
552 switch (topology[i]) {
555 printf("Error: Only one SFP module is supported!\n");
557 printf("Error: SFP module cannot be connected after Topaz Switch module!\n");
565 printf("Error: Only one Mini-PCIe module is supported!\n");
567 printf("Error: Mini-PCIe module cannot come after USB 3.0 module!\n");
568 else if (i && (i != 1 || !passpci))
569 printf("Error: Mini-PCIe module should be the first connected module or come right after Passthrough Mini-PCIe module!\n");
573 case MOX_MODULE_TOPAZ:
575 printf("Error: Only one Topaz module is supported!\n");
576 else if (peridot >= 3)
577 printf("Error: At most two Peridot modules can come before Topaz module!\n");
581 case MOX_MODULE_PERIDOT:
583 printf("Error: Peridot module must come before SFP or Topaz module!\n");
584 } else if (peridot >= 3) {
585 printf("Error: At most three Peridot modules are supported!\n");
587 peridot_pos[peridot] = i;
591 case MOX_MODULE_USB3:
593 printf("Error: USB 3.0 module cannot come after Mini-PCIe module!\n");
595 printf("Error: Only one USB 3.0 module is supported!\n");
596 else if (i && (i != 1 || !passpci))
597 printf("Error: USB 3.0 module should be the first connected module or come right after Passthrough Mini-PCIe module!\n");
601 case MOX_MODULE_PASSPCI:
603 printf("Error: Only one Passthrough Mini-PCIe module is supported!\n");
605 printf("Error: Passthrough Mini-PCIe module should be the first connected module!\n");
614 int last_stage_init(void)
616 struct gpio_desc reset_gpio = {};
618 /* configure modules */
619 if (get_reset_gpio(&reset_gpio) < 0)
620 goto handle_reset_btn;
623 if (configure_peridots(&reset_gpio) < 0) {
624 printf("Cannot configure Peridot modules!\n");
628 dm_gpio_set_value(&reset_gpio, 1);
630 dm_gpio_set_value(&reset_gpio, 0);
635 * check if the addresses are set by reading Scratch & Misc register
636 * 0x70 of Peridot (and potentially Topaz) modules
638 if (peridot || topaz) {
640 const char *node_name;
643 node = fdt_path_offset(gd->fdt_blob, "ethernet0");
644 node_name = (node >= 0) ? fdt_get_name(gd->fdt_blob, node, NULL) : NULL;
645 bus = node_name ? miiphy_get_dev_by_name(node_name) : NULL;
647 printf("Cannot get MDIO bus device!\n");
651 for (i = 0; i < peridot; ++i)
652 check_switch_address(bus, 0x10 + i);
655 check_switch_address(bus, 0x2);
657 sw_blink_leds(bus, peridot, topaz);
662 handle_reset_button();
667 #if defined(CONFIG_OF_BOARD_SETUP)
669 static bool is_topaz(int id)
671 return topaz && id == peridot + topaz - 1;
674 static int switch_addr(int id)
676 return is_topaz(id) ? 0x2 : 0x10 + id;
679 static int setup_switch(void *blob, int id)
681 int res, addr, i, node;
684 node = fdt_node_offset_by_compatible(blob, -1, "marvell,orion-mdio");
688 res = fdt_get_path(blob, node, mdio_path, sizeof(mdio_path));
692 addr = switch_addr(id);
694 /* first enable the switch by setting status = "okay" */
695 res = fdt_status_okay_by_pathf(blob, "%s/switch%i@%x", mdio_path, id,
701 * now if there are more switches or a SFP module coming after,
702 * enable corresponding ports
704 if (id < peridot + topaz - 1) {
705 res = fdt_status_okay_by_pathf(blob,
706 "%s/switch%i@%x/ports/port@a",
707 mdio_path, id, addr);
708 } else if (id == peridot - 1 && !topaz && sfp) {
709 res = fdt_status_okay_by_pathf(blob,
710 "%s/switch%i@%x/ports/port-sfp@a",
711 mdio_path, id, addr);
718 if (id >= peridot + topaz - 1)
721 /* finally change link property if needed */
722 node = fdt_node_offset_by_pathf(blob, "%s/switch%i@%x/ports/port@a",
723 mdio_path, id, addr);
727 for (i = id + 1; i < peridot + topaz; ++i) {
728 unsigned int phandle;
730 phandle = fdt_create_phandle_by_pathf(blob,
731 "%s/switch%i@%x/ports/port@%x",
734 is_topaz(i) ? 5 : 9);
736 return -FDT_ERR_NOPHANDLES;
739 res = fdt_setprop_u32(blob, node, "link", phandle);
741 res = fdt_appendprop_u32(blob, node, "link", phandle);
749 int ft_board_setup(void *blob, struct bd_info *bd)
754 * If MOX B (PCI), MOX F (USB) or MOX G (Passthrough PCI) modules are
755 * connected, enable the PCIe node.
757 if (pci || usb || passpci) {
758 res = fdt_status_okay_by_compatible(blob,
759 "marvell,armada-3700-pcie");
763 /* Fix PCIe regions for devices with 4 GB RAM */
764 res = a3700_fdt_fix_pcie_regions(blob);
770 * If MOX C (Topaz switch) and/or MOX E (Peridot switch) are connected,
771 * enable the eth1 node and setup the switches.
773 if (peridot || topaz) {
776 res = fdt_status_okay_by_alias(blob, "ethernet1");
780 for (i = 0; i < peridot + topaz; ++i) {
781 res = setup_switch(blob, i);
788 * If MOX D (SFP cage module) is connected, enable the SFP node and eth1
789 * node. If there is no Peridot switch between MOX A and MOX D, add link
790 * to the SFP node to eth1 node.
791 * Also enable and configure SFP GPIO controller node.
796 res = fdt_status_okay_by_compatible(blob, "sff,sfp");
800 res = fdt_status_okay_by_alias(blob, "ethernet1");
805 unsigned int phandle;
807 phandle = fdt_create_phandle_by_compatible(blob,
810 return -FDT_ERR_NOPHANDLES;
812 node = fdt_path_offset(blob, "ethernet1");
816 res = fdt_setprop_u32(blob, node, "sfp", phandle);
820 res = fdt_setprop_string(blob, node, "phy-mode",
826 res = fdt_status_okay_by_compatible(blob, "cznic,moxtet-gpio");
833 /* moxtet-sfp is on non-zero position, change default */
834 node = fdt_node_offset_by_compatible(blob, -1,
835 "cznic,moxtet-gpio");
839 res = fdt_setprop_u32(blob, node, "reg", sfp_pos);
843 sprintf(newname, "gpio@%x", sfp_pos);
845 res = fdt_set_name(blob, node, newname);
851 fdt_fixup_ethernet(blob);
853 /* Finally remove disabled nodes, as per Rob Herring's request. */
854 fdt_delete_disabled_nodes(blob);