u-boot/board/CZ.NIC/turris_mox/turris_mox.c
Simon Glass e7dcf5645f env: Drop environment.h header file where not needed
This header file is now only used by files that access internal
environment features. Drop it from various places where it is not needed.

Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2019-08-11 16:43:41 -04:00

549 lines
12 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Marek Behun <marek.behun@nic.cz>
*/
#include <common.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <dm.h>
#include <clk.h>
#include <env.h>
#include <spi.h>
#include <mvebu/comphy.h>
#include <miiphy.h>
#include <linux/string.h>
#include <linux/libfdt.h>
#include <fdt_support.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 0xd0013830
#define ARMADA_37XX_SPI_CTRL 0xd0010600
#define ARMADA_37XX_SPI_CFG 0xd0010604
#define ARMADA_37XX_SPI_DOUT 0xd0010608
#define ARMADA_37XX_SPI_DIN 0xd001060c
#define PCIE_PATH "/soc/pcie@d0070000"
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
{
gd->ram_base = 0;
gd->ram_size = (phys_size_t)get_ram_size(0, 0x40000000);
return 0;
}
int dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = (phys_addr_t)0;
gd->bd->bi_dram[0].size = gd->ram_size;
return 0;
}
#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(0x563fa, ARMADA_37XX_NB_GPIO_SEL);
writel(0x10df, ARMADA_37XX_SPI_CFG);
writel(0x2005b, ARMADA_37XX_SPI_CTRL);
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;
writel(0x5b, ARMADA_37XX_SPI_CTRL);
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;
}
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;
}