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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2018 Marek Behun <marek.behun@nic.cz>
- */
- #include <common.h>
- #include <asm/arch/cpu.h>
- #include <asm/arch/soc.h>
- #include <net.h>
- #include <asm/io.h>
- #include <asm/gpio.h>
- #include <clk.h>
- #include <dm.h>
- #include <env.h>
- #include <fdt_support.h>
- #include <init.h>
- #include <linux/delay.h>
- #include <linux/libfdt.h>
- #include <linux/string.h>
- #include <miiphy.h>
- #include <mvebu/comphy.h>
- #include <spi.h>
- #include "mox_sp.h"
- #define MAX_MOX_MODULES 10
- #define MOX_MODULE_SFP 0x1
- #define MOX_MODULE_PCI 0x2
- #define MOX_MODULE_TOPAZ 0x3
- #define MOX_MODULE_PERIDOT 0x4
- #define MOX_MODULE_USB3 0x5
- #define MOX_MODULE_PASSPCI 0x6
- #define ARMADA_37XX_NB_GPIO_SEL (MVEBU_REGISTER(0x13830))
- #define ARMADA_37XX_SPI_CTRL (MVEBU_REGISTER(0x10600))
- #define ARMADA_37XX_SPI_CFG (MVEBU_REGISTER(0x10604))
- #define ARMADA_37XX_SPI_DOUT (MVEBU_REGISTER(0x10608))
- #define ARMADA_37XX_SPI_DIN (MVEBU_REGISTER(0x1060c))
- #define ETH1_PATH "/soc/internal-regs@d0000000/ethernet@40000"
- #define MDIO_PATH "/soc/internal-regs@d0000000/mdio@32004"
- #define SFP_GPIO_PATH "/soc/internal-regs@d0000000/spi@10600/moxtet@1/gpio@0"
- #define PCIE_PATH "/soc/pcie@d0070000"
- #define SFP_PATH "/sfp"
- DECLARE_GLOBAL_DATA_PTR;
- #if defined(CONFIG_OF_BOARD_FIXUP)
- int board_fix_fdt(void *blob)
- {
- u8 topology[MAX_MOX_MODULES];
- int i, size, node;
- bool enable;
- /*
- * SPI driver is not loaded in driver model yet, but we have to find out
- * if pcie should be enabled in U-Boot's device tree. Therefore we have
- * to read SPI by reading/writing SPI registers directly
- */
- writel(0x10df, ARMADA_37XX_SPI_CFG);
- /* put pin from GPIO to SPI mode */
- clrbits_le32(ARMADA_37XX_NB_GPIO_SEL, BIT(12));
- /* enable SPI CS1 */
- setbits_le32(ARMADA_37XX_SPI_CTRL, BIT(17));
- while (!(readl(ARMADA_37XX_SPI_CTRL) & 0x2))
- udelay(1);
- for (i = 0; i < MAX_MOX_MODULES; ++i) {
- writel(0x0, ARMADA_37XX_SPI_DOUT);
- while (!(readl(ARMADA_37XX_SPI_CTRL) & 0x2))
- udelay(1);
- topology[i] = readl(ARMADA_37XX_SPI_DIN) & 0xff;
- if (topology[i] == 0xff)
- break;
- topology[i] &= 0xf;
- }
- size = i;
- /* disable SPI CS1 */
- clrbits_le32(ARMADA_37XX_SPI_CTRL, BIT(17));
- if (size > 1 && (topology[1] == MOX_MODULE_PCI ||
- topology[1] == MOX_MODULE_USB3 ||
- topology[1] == MOX_MODULE_PASSPCI))
- enable = true;
- else
- enable = false;
- node = fdt_path_offset(blob, PCIE_PATH);
- if (node < 0) {
- printf("Cannot find PCIe node in U-Boot's device tree!\n");
- return 0;
- }
- if (fdt_setprop_string(blob, node, "status",
- enable ? "okay" : "disabled") < 0) {
- printf("Cannot %s PCIe in U-Boot's device tree!\n",
- enable ? "enable" : "disable");
- return 0;
- }
- if (a3700_fdt_fix_pcie_regions(blob) < 0) {
- printf("Cannot fix PCIe regions in U-Boot's device tree!\n");
- return 0;
- }
- return 0;
- }
- #endif
- int board_init(void)
- {
- /* address of boot parameters */
- gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
- return 0;
- }
- static int mox_do_spi(u8 *in, u8 *out, size_t size)
- {
- struct spi_slave *slave;
- struct udevice *dev;
- int ret;
- ret = spi_get_bus_and_cs(0, 1, 1000000, SPI_CPHA | SPI_CPOL,
- "spi_generic_drv", "moxtet@1", &dev,
- &slave);
- if (ret)
- goto fail;
- ret = spi_claim_bus(slave);
- if (ret)
- goto fail_free;
- ret = spi_xfer(slave, size * 8, out, in, SPI_XFER_ONCE);
- spi_release_bus(slave);
- fail_free:
- spi_free_slave(slave);
- fail:
- return ret;
- }
- static int mox_get_topology(const u8 **ptopology, int *psize, int *pis_sd)
- {
- static int is_sd;
- static u8 topology[MAX_MOX_MODULES - 1];
- static int size;
- u8 din[MAX_MOX_MODULES], dout[MAX_MOX_MODULES];
- int ret, i;
- if (size) {
- if (ptopology)
- *ptopology = topology;
- if (psize)
- *psize = size;
- if (pis_sd)
- *pis_sd = is_sd;
- return 0;
- }
- memset(din, 0, MAX_MOX_MODULES);
- memset(dout, 0, MAX_MOX_MODULES);
- ret = mox_do_spi(din, dout, MAX_MOX_MODULES);
- if (ret)
- return ret;
- if (din[0] == 0x10)
- is_sd = 1;
- else if (din[0] == 0x00)
- is_sd = 0;
- else
- return -ENODEV;
- for (i = 1; i < MAX_MOX_MODULES && din[i] != 0xff; ++i)
- topology[i - 1] = din[i] & 0xf;
- size = i - 1;
- if (ptopology)
- *ptopology = topology;
- if (psize)
- *psize = size;
- if (pis_sd)
- *pis_sd = is_sd;
- return 0;
- }
- int comphy_update_map(struct comphy_map *serdes_map, int count)
- {
- int ret, i, size, sfpindex = -1, swindex = -1;
- const u8 *topology;
- ret = mox_get_topology(&topology, &size, NULL);
- if (ret)
- return ret;
- for (i = 0; i < size; ++i) {
- if (topology[i] == MOX_MODULE_SFP && sfpindex == -1)
- sfpindex = i;
- else if ((topology[i] == MOX_MODULE_TOPAZ ||
- topology[i] == MOX_MODULE_PERIDOT) &&
- swindex == -1)
- swindex = i;
- }
- if (sfpindex >= 0 && swindex >= 0) {
- if (sfpindex < swindex)
- serdes_map[0].speed = PHY_SPEED_1_25G;
- else
- serdes_map[0].speed = PHY_SPEED_3_125G;
- } else if (sfpindex >= 0) {
- serdes_map[0].speed = PHY_SPEED_1_25G;
- } else if (swindex >= 0) {
- serdes_map[0].speed = PHY_SPEED_3_125G;
- }
- return 0;
- }
- #define SW_SMI_CMD_R(d, r) (0x9800 | (((d) & 0x1f) << 5) | ((r) & 0x1f))
- #define SW_SMI_CMD_W(d, r) (0x9400 | (((d) & 0x1f) << 5) | ((r) & 0x1f))
- static int sw_multi_read(struct mii_dev *bus, int sw, int dev, int reg)
- {
- bus->write(bus, sw, 0, 0, SW_SMI_CMD_R(dev, reg));
- mdelay(5);
- return bus->read(bus, sw, 0, 1);
- }
- static void sw_multi_write(struct mii_dev *bus, int sw, int dev, int reg,
- u16 val)
- {
- bus->write(bus, sw, 0, 1, val);
- bus->write(bus, sw, 0, 0, SW_SMI_CMD_W(dev, reg));
- mdelay(5);
- }
- static int sw_scratch_read(struct mii_dev *bus, int sw, int reg)
- {
- sw_multi_write(bus, sw, 0x1c, 0x1a, (reg & 0x7f) << 8);
- return sw_multi_read(bus, sw, 0x1c, 0x1a) & 0xff;
- }
- static void sw_led_write(struct mii_dev *bus, int sw, int port, int reg,
- u16 val)
- {
- sw_multi_write(bus, sw, port, 0x16, 0x8000 | ((reg & 7) << 12)
- | (val & 0x7ff));
- }
- static void sw_blink_leds(struct mii_dev *bus, int peridot, int topaz)
- {
- int i, p;
- struct {
- int port;
- u16 val;
- int wait;
- } regs[] = {
- { 2, 0xef, 1 }, { 2, 0xfe, 1 }, { 2, 0x33, 0 },
- { 4, 0xef, 1 }, { 4, 0xfe, 1 }, { 4, 0x33, 0 },
- { 3, 0xfe, 1 }, { 3, 0xef, 1 }, { 3, 0x33, 0 },
- { 1, 0xfe, 1 }, { 1, 0xef, 1 }, { 1, 0x33, 0 }
- };
- for (i = 0; i < 12; ++i) {
- for (p = 0; p < peridot; ++p) {
- sw_led_write(bus, 0x10 + p, regs[i].port, 0,
- regs[i].val);
- sw_led_write(bus, 0x10 + p, regs[i].port + 4, 0,
- regs[i].val);
- }
- if (topaz) {
- sw_led_write(bus, 0x2, 0x10 + regs[i].port, 0,
- regs[i].val);
- }
- if (regs[i].wait)
- mdelay(75);
- }
- }
- static void check_switch_address(struct mii_dev *bus, int addr)
- {
- if (sw_scratch_read(bus, addr, 0x70) >> 3 != addr)
- printf("Check of switch MDIO address failed for 0x%02x\n",
- addr);
- }
- static int sfp, pci, topaz, peridot, usb, passpci;
- static int sfp_pos, peridot_pos[3];
- static int module_count;
- static int configure_peridots(struct gpio_desc *reset_gpio)
- {
- int i, ret;
- u8 dout[MAX_MOX_MODULES];
- memset(dout, 0, MAX_MOX_MODULES);
- /* set addresses of Peridot modules */
- for (i = 0; i < peridot; ++i)
- dout[module_count - peridot_pos[i]] = (~i) & 3;
- /*
- * if there is a SFP module connected to the last Peridot module, set
- * the P10_SMODE to 1 for the Peridot module
- */
- if (sfp)
- dout[module_count - peridot_pos[i - 1]] |= 1 << 3;
- dm_gpio_set_value(reset_gpio, 1);
- mdelay(10);
- ret = mox_do_spi(NULL, dout, module_count + 1);
- mdelay(10);
- dm_gpio_set_value(reset_gpio, 0);
- mdelay(50);
- return ret;
- }
- static int get_reset_gpio(struct gpio_desc *reset_gpio)
- {
- int node;
- node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "cznic,moxtet");
- if (node < 0) {
- printf("Cannot find Moxtet bus device node!\n");
- return -1;
- }
- gpio_request_by_name_nodev(offset_to_ofnode(node), "reset-gpios", 0,
- reset_gpio, GPIOD_IS_OUT);
- if (!dm_gpio_is_valid(reset_gpio)) {
- printf("Cannot find reset GPIO for Moxtet bus!\n");
- return -1;
- }
- return 0;
- }
- int misc_init_r(void)
- {
- int ret;
- u8 mac1[6], mac2[6];
- ret = mbox_sp_get_board_info(NULL, mac1, mac2, NULL, NULL);
- if (ret < 0) {
- printf("Cannot read data from OTP!\n");
- return 0;
- }
- if (is_valid_ethaddr(mac1) && !env_get("ethaddr"))
- eth_env_set_enetaddr("ethaddr", mac1);
- if (is_valid_ethaddr(mac2) && !env_get("eth1addr"))
- eth_env_set_enetaddr("eth1addr", mac2);
- return 0;
- }
- static void mox_print_info(void)
- {
- int ret, board_version, ram_size;
- u64 serial_number;
- const char *pub_key;
- ret = mbox_sp_get_board_info(&serial_number, NULL, NULL, &board_version,
- &ram_size);
- if (ret < 0)
- return;
- printf("Turris Mox:\n");
- printf(" Board version: %i\n", board_version);
- printf(" RAM size: %i MiB\n", ram_size);
- printf(" Serial Number: %016llX\n", serial_number);
- pub_key = mox_sp_get_ecdsa_public_key();
- if (pub_key)
- printf(" ECDSA Public Key: %s\n", pub_key);
- else
- printf("Cannot read ECDSA Public Key\n");
- }
- int last_stage_init(void)
- {
- int ret, i;
- const u8 *topology;
- int is_sd;
- struct mii_dev *bus;
- struct gpio_desc reset_gpio = {};
- mox_print_info();
- ret = mox_get_topology(&topology, &module_count, &is_sd);
- if (ret) {
- printf("Cannot read module topology!\n");
- return 0;
- }
- printf(" SD/eMMC version: %s\n", is_sd ? "SD" : "eMMC");
- if (module_count)
- printf("Module Topology:\n");
- for (i = 0; i < module_count; ++i) {
- switch (topology[i]) {
- case MOX_MODULE_SFP:
- printf("% 4i: SFP Module\n", i + 1);
- break;
- case MOX_MODULE_PCI:
- printf("% 4i: Mini-PCIe Module\n", i + 1);
- break;
- case MOX_MODULE_TOPAZ:
- printf("% 4i: Topaz Switch Module (4-port)\n", i + 1);
- break;
- case MOX_MODULE_PERIDOT:
- printf("% 4i: Peridot Switch Module (8-port)\n", i + 1);
- break;
- case MOX_MODULE_USB3:
- printf("% 4i: USB 3.0 Module (4 ports)\n", i + 1);
- break;
- case MOX_MODULE_PASSPCI:
- printf("% 4i: Passthrough Mini-PCIe Module\n", i + 1);
- break;
- default:
- printf("% 4i: unknown (ID %i)\n", i + 1, topology[i]);
- }
- }
- /* now check if modules are connected in supported mode */
- for (i = 0; i < module_count; ++i) {
- switch (topology[i]) {
- case MOX_MODULE_SFP:
- if (sfp) {
- printf("Error: Only one SFP module is supported!\n");
- } else if (topaz) {
- printf("Error: SFP module cannot be connected after Topaz Switch module!\n");
- } else {
- sfp_pos = i;
- ++sfp;
- }
- break;
- case MOX_MODULE_PCI:
- if (pci)
- printf("Error: Only one Mini-PCIe module is supported!\n");
- else if (usb)
- printf("Error: Mini-PCIe module cannot come after USB 3.0 module!\n");
- else if (i && (i != 1 || !passpci))
- printf("Error: Mini-PCIe module should be the first connected module or come right after Passthrough Mini-PCIe module!\n");
- else
- ++pci;
- break;
- case MOX_MODULE_TOPAZ:
- if (topaz)
- printf("Error: Only one Topaz module is supported!\n");
- else if (peridot >= 3)
- printf("Error: At most two Peridot modules can come before Topaz module!\n");
- else
- ++topaz;
- break;
- case MOX_MODULE_PERIDOT:
- if (sfp || topaz) {
- printf("Error: Peridot module must come before SFP or Topaz module!\n");
- } else if (peridot >= 3) {
- printf("Error: At most three Peridot modules are supported!\n");
- } else {
- peridot_pos[peridot] = i;
- ++peridot;
- }
- break;
- case MOX_MODULE_USB3:
- if (pci)
- printf("Error: USB 3.0 module cannot come after Mini-PCIe module!\n");
- else if (usb)
- printf("Error: Only one USB 3.0 module is supported!\n");
- else if (i && (i != 1 || !passpci))
- printf("Error: USB 3.0 module should be the first connected module or come right after Passthrough Mini-PCIe module!\n");
- else
- ++usb;
- break;
- case MOX_MODULE_PASSPCI:
- if (passpci)
- printf("Error: Only one Passthrough Mini-PCIe module is supported!\n");
- else if (i != 0)
- printf("Error: Passthrough Mini-PCIe module should be the first connected module!\n");
- else
- ++passpci;
- }
- }
- /* now configure modules */
- if (get_reset_gpio(&reset_gpio) < 0)
- return 0;
- if (peridot > 0) {
- if (configure_peridots(&reset_gpio) < 0) {
- printf("Cannot configure Peridot modules!\n");
- peridot = 0;
- }
- } else {
- dm_gpio_set_value(&reset_gpio, 1);
- mdelay(50);
- dm_gpio_set_value(&reset_gpio, 0);
- mdelay(50);
- }
- if (peridot || topaz) {
- /*
- * now check if the addresses are set by reading Scratch & Misc
- * register 0x70 of Peridot (and potentially Topaz) modules
- */
- bus = miiphy_get_dev_by_name("neta@30000");
- if (!bus) {
- printf("Cannot get MDIO bus device!\n");
- } else {
- for (i = 0; i < peridot; ++i)
- check_switch_address(bus, 0x10 + i);
- if (topaz)
- check_switch_address(bus, 0x2);
- sw_blink_leds(bus, peridot, topaz);
- }
- }
- printf("\n");
- return 0;
- }
- #if defined(CONFIG_OF_BOARD_SETUP)
- static int vnode_by_path(void *blob, const char *fmt, va_list ap)
- {
- char path[128];
- vsnprintf(path, 128, fmt, ap);
- return fdt_path_offset(blob, path);
- }
- static int node_by_path(void *blob, const char *fmt, ...)
- {
- va_list ap;
- int res;
- va_start(ap, fmt);
- res = vnode_by_path(blob, fmt, ap);
- va_end(ap);
- return res;
- }
- static int phandle_by_path(void *blob, const char *fmt, ...)
- {
- va_list ap;
- int node, phandle, res;
- va_start(ap, fmt);
- node = vnode_by_path(blob, fmt, ap);
- va_end(ap);
- if (node < 0)
- return node;
- phandle = fdt_get_phandle(blob, node);
- if (phandle > 0)
- return phandle;
- phandle = fdt_get_max_phandle(blob);
- if (phandle < 0)
- return phandle;
- phandle += 1;
- res = fdt_setprop_u32(blob, node, "linux,phandle", phandle);
- if (res < 0)
- return res;
- res = fdt_setprop_u32(blob, node, "phandle", phandle);
- if (res < 0)
- return res;
- return phandle;
- }
- static int enable_by_path(void *blob, const char *fmt, ...)
- {
- va_list ap;
- int node;
- va_start(ap, fmt);
- node = vnode_by_path(blob, fmt, ap);
- va_end(ap);
- if (node < 0)
- return node;
- return fdt_setprop_string(blob, node, "status", "okay");
- }
- static bool is_topaz(int id)
- {
- return topaz && id == peridot + topaz - 1;
- }
- static int switch_addr(int id)
- {
- return is_topaz(id) ? 0x2 : 0x10 + id;
- }
- static int setup_switch(void *blob, int id)
- {
- int res, addr, i, node, phandle;
- addr = switch_addr(id);
- /* first enable the switch by setting status = "okay" */
- res = enable_by_path(blob, MDIO_PATH "/switch%i@%x", id, addr);
- if (res < 0)
- return res;
- /*
- * now if there are more switches or a SFP module coming after,
- * enable corresponding ports
- */
- if (id < peridot + topaz - 1) {
- res = enable_by_path(blob,
- MDIO_PATH "/switch%i@%x/ports/port@a",
- id, addr);
- } else if (id == peridot - 1 && !topaz && sfp) {
- res = enable_by_path(blob,
- MDIO_PATH "/switch%i@%x/ports/port-sfp@a",
- id, addr);
- } else {
- res = 0;
- }
- if (res < 0)
- return res;
- if (id >= peridot + topaz - 1)
- return 0;
- /* finally change link property if needed */
- node = node_by_path(blob, MDIO_PATH "/switch%i@%x/ports/port@a", id,
- addr);
- if (node < 0)
- return node;
- for (i = id + 1; i < peridot + topaz; ++i) {
- phandle = phandle_by_path(blob,
- MDIO_PATH "/switch%i@%x/ports/port@%x",
- i, switch_addr(i),
- is_topaz(i) ? 5 : 9);
- if (phandle < 0)
- return phandle;
- if (i == id + 1)
- res = fdt_setprop_u32(blob, node, "link", phandle);
- else
- res = fdt_appendprop_u32(blob, node, "link", phandle);
- if (res < 0)
- return res;
- }
- return 0;
- }
- static int remove_disabled_nodes(void *blob)
- {
- while (1) {
- int res, offset;
- offset = fdt_node_offset_by_prop_value(blob, -1, "status",
- "disabled", 9);
- if (offset < 0)
- break;
- res = fdt_del_node(blob, offset);
- if (res < 0)
- return res;
- }
- return 0;
- }
- int ft_board_setup(void *blob, struct bd_info *bd)
- {
- int node, phandle, res;
- /*
- * If MOX B (PCI), MOX F (USB) or MOX G (Passthrough PCI) modules are
- * connected, enable the PCIe node.
- */
- if (pci || usb || passpci) {
- node = fdt_path_offset(blob, PCIE_PATH);
- if (node < 0)
- return node;
- res = fdt_setprop_string(blob, node, "status", "okay");
- if (res < 0)
- return res;
- /* Fix PCIe regions for devices with 4 GB RAM */
- res = a3700_fdt_fix_pcie_regions(blob);
- if (res < 0)
- return res;
- }
- /*
- * If MOX C (Topaz switch) and/or MOX E (Peridot switch) are connected,
- * enable the eth1 node and setup the switches.
- */
- if (peridot || topaz) {
- int i;
- res = enable_by_path(blob, ETH1_PATH);
- if (res < 0)
- return res;
- for (i = 0; i < peridot + topaz; ++i) {
- res = setup_switch(blob, i);
- if (res < 0)
- return res;
- }
- }
- /*
- * If MOX D (SFP cage module) is connected, enable the SFP node and eth1
- * node. If there is no Peridot switch between MOX A and MOX D, add link
- * to the SFP node to eth1 node.
- * Also enable and configure SFP GPIO controller node.
- */
- if (sfp) {
- res = enable_by_path(blob, SFP_PATH);
- if (res < 0)
- return res;
- res = enable_by_path(blob, ETH1_PATH);
- if (res < 0)
- return res;
- if (!peridot) {
- phandle = phandle_by_path(blob, SFP_PATH);
- if (phandle < 0)
- return res;
- node = node_by_path(blob, ETH1_PATH);
- if (node < 0)
- return node;
- res = fdt_setprop_u32(blob, node, "sfp", phandle);
- if (res < 0)
- return res;
- res = fdt_setprop_string(blob, node, "phy-mode",
- "sgmii");
- if (res < 0)
- return res;
- }
- res = enable_by_path(blob, SFP_GPIO_PATH);
- if (res < 0)
- return res;
- if (sfp_pos) {
- char newname[16];
- /* moxtet-sfp is on non-zero position, change default */
- node = node_by_path(blob, SFP_GPIO_PATH);
- if (node < 0)
- return node;
- res = fdt_setprop_u32(blob, node, "reg", sfp_pos);
- if (res < 0)
- return res;
- sprintf(newname, "gpio@%x", sfp_pos);
- res = fdt_set_name(blob, node, newname);
- if (res < 0)
- return res;
- }
- }
- fdt_fixup_ethernet(blob);
- /* Finally remove disabled nodes, as per Rob Herring's request. */
- remove_disabled_nodes(blob);
- return 0;
- }
- #endif
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