1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2015-2019 Stefan Roese <sr@denx.de>
14 #if !defined(CONFIG_SPL_BUILD)
15 #include <bootcount.h>
17 #include <asm/global_data.h>
20 #include <asm/arch/cpu.h>
21 #include <asm/arch/soc.h>
22 #include <linux/delay.h>
23 #include <linux/mbus.h>
27 #include <u-boot/crc.h>
28 #include "theadorable.h"
30 #include "../drivers/ddr/marvell/axp/ddr3_hw_training.h"
31 #include "../arch/arm/mach-mvebu/serdes/axp/high_speed_env_spec.h"
33 DECLARE_GLOBAL_DATA_PTR;
35 #define MV_USB_PHY_BASE (MVEBU_AXP_USB_BASE + 0x800)
36 #define PHY_CHANNEL_RX_CTRL0_REG(port, chan) \
37 (MV_USB_PHY_BASE + ((port) << 12) + ((chan) << 6) + 0x8)
39 #define THEADORABLE_GPP_OUT_ENA_LOW 0x00336780
40 #define THEADORABLE_GPP_OUT_ENA_MID 0x00003cf0
41 #define THEADORABLE_GPP_OUT_ENA_HIGH (~(0x0))
43 #define THEADORABLE_GPP_OUT_VAL_LOW 0x2c0c983f
44 #define THEADORABLE_GPP_OUT_VAL_MID 0x0007000c
45 #define THEADORABLE_GPP_OUT_VAL_HIGH 0x00000000
47 #define GPIO_USB0_PWR_ON 18
48 #define GPIO_USB1_PWR_ON 19
50 #define PEX_SWITCH_NOT_FOUNT_LIMIT 3
53 #define STM_I2C_ADDR 0x27
54 #define REBOOT_DELAY 1000 /* reboot-delay in ms */
55 #define ABORT_TIMEOUT 3000 /* 3 seconds reboot abort timeout */
57 /* DDR3 static configuration */
58 static MV_DRAM_MC_INIT ddr3_theadorable[MV_MAX_DDR3_STATIC_SIZE] = {
59 {0x00001400, 0x7301ca28}, /* DDR SDRAM Configuration Register */
60 {0x00001404, 0x30000800}, /* Dunit Control Low Register */
61 {0x00001408, 0x44149887}, /* DDR SDRAM Timing (Low) Register */
62 {0x0000140C, 0x38d93fc7}, /* DDR SDRAM Timing (High) Register */
63 {0x00001410, 0x1b100001}, /* DDR SDRAM Address Control Register */
64 {0x00001424, 0x0000f3ff}, /* Dunit Control High Register */
65 {0x00001428, 0x000f8830}, /* ODT Timing (Low) Register */
66 {0x0000142C, 0x014c50f4}, /* DDR3 Timing Register */
67 {0x0000147C, 0x0000c671}, /* ODT Timing (High) Register */
69 {0x00001494, 0x00010000}, /* DDR SDRAM ODT Control (Low) Reg */
70 {0x0000149C, 0x00000001}, /* DDR Dunit ODT Control Register */
71 {0x000014A0, 0x00000001}, /* DRAM FIFO Control Register */
72 {0x000014A8, 0x00000101}, /* AXI Control Register */
75 * DO NOT Modify - Open Mbus Window - 2G - Mbus is required for the
78 {0x000200e8, 0x3fff0e01},
79 {0x00020184, 0x3fffffe0}, /* Close fast path Window to - 2G */
81 {0x0001504, 0x7fffffe1}, /* CS0 Size */
82 {0x000150C, 0x00000000}, /* CS1 Size */
83 {0x0001514, 0x00000000}, /* CS2 Size */
84 {0x000151C, 0x00000000}, /* CS3 Size */
86 {0x00020220, 0x00000007}, /* Reserved */
88 {0x00001538, 0x00000009}, /* Read Data Sample Delays Register */
89 {0x0000153C, 0x00000009}, /* Read Data Ready Delay Register */
91 {0x000015D0, 0x00000650}, /* MR0 */
92 {0x000015D4, 0x00000044}, /* MR1 */
93 {0x000015D8, 0x00000010}, /* MR2 */
94 {0x000015DC, 0x00000000}, /* MR3 */
95 {0x000015E0, 0x00000001},
96 {0x000015E4, 0x00203c18}, /* ZQDS Configuration Register */
97 {0x000015EC, 0xf800a225}, /* DDR PHY */
99 /* Recommended Settings from Marvell for 4 x 16 bit devices: */
100 {0x000014C0, 0x192424c9}, /* DRAM addr and Ctrl Driving Strenght*/
101 {0x000014C4, 0x0aaa24c9}, /* DRAM Data and DQS Driving Strenght */
106 static MV_DRAM_MODES board_ddr_modes[MV_DDR3_MODES_NUMBER] = {
107 {"theadorable_1333-667", 0x3, 0x5, 0x0, A0, ddr3_theadorable, NULL},
110 extern MV_SERDES_CHANGE_M_PHY serdes_change_m_phy[];
113 * Lane0 - PCIE0.0 X1 (to WIFI Module)
116 * Lane7 - SGMII0 (to Ethernet Phy)
117 * Lane8-11 - PCIE2.0 X4 (to PEX Switch)
118 * all other lanes are disabled
120 MV_BIN_SERDES_CFG theadorable_serdes_cfg[] = {
121 { MV_PEX_ROOT_COMPLEX, 0x22200001, 0x00001111,
122 { PEX_BUS_MODE_X1, PEX_BUS_DISABLED, PEX_BUS_MODE_X4,
124 0x0060, serdes_change_m_phy
129 * Define a board-specific detection pulse-width array for the SerDes PCIe
130 * interfaces. If not defined in the board code, the default of currently 2
131 * is used. Values from 0...3 are possible (2 bits).
133 u8 serdes_pex_pulse_width[4] = { 0, 2, 2, 2 };
135 MV_DRAM_MODES *ddr3_get_static_ddr_mode(void)
137 /* Only one mode supported for this board */
138 return &board_ddr_modes[0];
141 MV_BIN_SERDES_CFG *board_serdes_cfg_get(void)
143 return &theadorable_serdes_cfg[0];
146 u8 board_sat_r_get(u8 dev_num, u8 reg)
148 /* Bit x enables PCI 2.0 link capabilities instead of PCI 1.x */
149 return 0xe; /* PEX port 0 is PCIe Gen1, PEX port 1..3 PCIe Gen2 */
152 #define PCIE_LNK_CTRL_STAT_2_OFF 0x0090
153 #define PCIE_LNK_CTRL_STAT_2_DEEM_BIT BIT(6)
155 static void pcie_set_deemphasis(u32 base)
159 reg = readl((void *)base + PCIE_LNK_CTRL_STAT_2_OFF);
160 reg |= PCIE_LNK_CTRL_STAT_2_DEEM_BIT;
161 writel(reg, (void *)base + PCIE_LNK_CTRL_STAT_2_OFF);
164 int board_early_init_f(void)
167 writel(0x00000000, MVEBU_MPP_BASE + 0x00);
168 writel(0x03300000, MVEBU_MPP_BASE + 0x04);
169 writel(0x00000033, MVEBU_MPP_BASE + 0x08);
170 writel(0x00000000, MVEBU_MPP_BASE + 0x0c);
171 writel(0x11110000, MVEBU_MPP_BASE + 0x10);
172 writel(0x00221100, MVEBU_MPP_BASE + 0x14);
173 writel(0x00000000, MVEBU_MPP_BASE + 0x18);
174 writel(0x00000000, MVEBU_MPP_BASE + 0x1c);
175 writel(0x00000000, MVEBU_MPP_BASE + 0x20);
178 writel(THEADORABLE_GPP_OUT_VAL_LOW, MVEBU_GPIO0_BASE + 0x00);
179 writel(THEADORABLE_GPP_OUT_ENA_LOW, MVEBU_GPIO0_BASE + 0x04);
180 writel(THEADORABLE_GPP_OUT_VAL_MID, MVEBU_GPIO1_BASE + 0x00);
181 writel(THEADORABLE_GPP_OUT_ENA_MID, MVEBU_GPIO1_BASE + 0x04);
182 writel(THEADORABLE_GPP_OUT_VAL_HIGH, MVEBU_GPIO2_BASE + 0x00);
183 writel(THEADORABLE_GPP_OUT_ENA_HIGH, MVEBU_GPIO2_BASE + 0x04);
186 * Set deephasis bit in the PCIe configuration of both PCIe ports
187 * used on this board.
189 * This needs to be done very early, even before the SERDES setup
190 * code is run. This way, the first link will already be established
191 * with this setup. Testing has shown, that this results in a more
192 * stable PCIe link with better signal quality.
194 pcie_set_deemphasis(MVEBU_REG_PCIE_BASE); /* Port 0 */
195 pcie_set_deemphasis(MVEBU_REG_PCIE_BASE + 0x2000); /* Port 2 */
204 /* adress of boot parameters */
205 gd->bd->bi_boot_params = mvebu_sdram_bar(0) + 0x100;
208 * Map SPI devices via MBUS so that they can be accessed via
209 * the SPI direct access mode
211 mbus_dt_setup_win(&mbus_state, SPI_BUS0_DEV1_BASE, SPI_BUS0_DEV1_SIZE,
212 CPU_TARGET_DEVICEBUS_BOOTROM_SPI, CPU_ATTR_SPI0_CS1);
213 mbus_dt_setup_win(&mbus_state, SPI_BUS1_DEV2_BASE, SPI_BUS0_DEV1_SIZE,
214 CPU_TARGET_DEVICEBUS_BOOTROM_SPI, CPU_ATTR_SPI1_CS2);
217 * Set RX Channel Control 0 Register:
218 * Tests have shown, that setting the LPF_COEF from 0 (1/8)
219 * to 3 (1/1) results in a more stable USB connection.
221 setbits_le32(PHY_CHANNEL_RX_CTRL0_REG(0, 1), 0xc);
222 setbits_le32(PHY_CHANNEL_RX_CTRL0_REG(0, 2), 0xc);
223 setbits_le32(PHY_CHANNEL_RX_CTRL0_REG(0, 3), 0xc);
225 /* Toggle USB power */
226 ret = gpio_request(GPIO_USB0_PWR_ON, "USB0_PWR_ON");
229 gpio_direction_output(GPIO_USB0_PWR_ON, 0);
230 ret = gpio_request(GPIO_USB1_PWR_ON, "USB1_PWR_ON");
233 gpio_direction_output(GPIO_USB1_PWR_ON, 0);
235 gpio_set_value(GPIO_USB0_PWR_ON, 1);
236 gpio_set_value(GPIO_USB1_PWR_ON, 1);
249 int board_eth_init(struct bd_info *bis)
251 cpu_eth_init(bis); /* Built in controller(s) come first */
252 return pci_eth_init(bis);
256 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_BOARD_LATE_INIT)
257 int board_late_init(void)
263 * Check if the PEX switch is detected (somtimes its not available
264 * on the PCIe bus). In this case, try to recover by issuing a
265 * soft-reset or even a power-cycle, depending on the bootcounter
268 bdf = pci_find_device(PCI_VENDOR_ID_PLX, 0x8619, 0);
270 unsigned long start_time = get_timer(0);
274 /* PEX switch not found! */
275 bootcount = bootcount_load();
276 printf("Failed to find PLX PEX-switch (bootcount=%ld)\n",
280 * The user can exit this boot-loop in the error case by
281 * hitting Ctrl-C. So wait some time for this key here.
283 printf("Continue booting with Ctrl-C, otherwise rebooting\n");
285 /* Handle control-c and timeouts */
287 printf("PEX error boot-loop aborted!\n");
290 } while (get_timer(start_time) < ABORT_TIMEOUT);
294 * At this stage the bootcounter has not been incremented
295 * yet. We need to do this manually here to get an actually
296 * working bootcounter in this error case.
300 if (bootcount > PEX_SWITCH_NOT_FOUNT_LIMIT) {
301 printf("Issuing power-switch via uC!\n");
303 printf("Issuing power-switch via uC!\n");
304 i2c_set_bus_num(STM_I2C_BUS);
305 i2c_buf[0] = STM_I2C_ADDR << 1;
306 i2c_buf[1] = 0xc5; /* cmd */
307 i2c_buf[2] = 0x01; /* enable */
308 /* Delay before reboot */
309 i2c_buf[3] = REBOOT_DELAY & 0x00ff;
310 i2c_buf[4] = (REBOOT_DELAY & 0xff00) >> 8;
311 /* Delay before shutdown */
314 i2c_buf[7] = crc8(0x72, &i2c_buf[0], 7);
316 ret = i2c_write(STM_I2C_ADDR, 0, 0, &i2c_buf[1], 7);
318 printf("I2C write error (ret=%d)\n", ret);
319 printf("Issuing soft-reset...\n");
320 /* default handling: SOFT reset */
321 do_reset(NULL, 0, 0, NULL);
324 /* Wait for power-cycle to occur... */
325 printf("Waiting for power-cycle via uC...\n");
329 printf("Issuing soft-reset...\n");
330 /* default handling: SOFT reset */
331 do_reset(NULL, 0, 0, NULL);
339 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_PCI)
340 static int pcie_get_link_speed_width(pci_dev_t bdf, int *speed, int *width)
349 * Check if the PCIe device is detected (sometimes its not available
352 ret = dm_pci_bus_find_bdf(bdf, &dev);
356 /* PCIe device found */
357 dm_pci_read_config16(dev, PCI_VENDOR_ID, &ven_id);
358 dm_pci_read_config16(dev, PCI_DEVICE_ID, &dev_id);
359 printf("Detected PCIe device: VendorID 0x%04x DeviceId 0x%04x @ BDF %d.%d.%d\n",
360 ven_id, dev_id, PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf));
362 /* Now read EXP_LNKSTA register */
363 pos = dm_pci_find_capability(dev, PCI_CAP_ID_EXP);
364 dm_pci_read_config16(dev, pos + PCI_EXP_LNKSTA, &lnksta);
365 *speed = lnksta & PCI_EXP_LNKSTA_CLS;
366 *width = (lnksta & PCI_EXP_LNKSTA_NLW) >> PCI_EXP_LNKSTA_NLW_SHIFT;
372 * U-Boot cmd to test for the presence of the directly connected PCIe devices
373 * the theadorable board. This cmd can be used by U-Boot scripts for automated
374 * testing, if the PCIe setup is correct. Meaning, that all PCIe devices are
375 * correctly detected and the link speed and width is corrent.
377 * Here a short script that may be used for an automated test. It results in
378 * an endless reboot loop, if the PCIe devices are detected correctly. If at
379 * any time a problem is detected (PCIe device not available or link is
380 * incorrect), then booting will halt. So just use this "bootcmd" and let the
381 * board run over a longer time (e.g. one night) and if the board still reboots
382 * after this time, then everything is okay.
384 * bootcmd=echo bootcount=$bootcount; pcie ;if test $? -eq 0;
385 * then echo PCIe status okay, resetting...; reset; else;
386 * echo PCIe status NOT okay, hanging (bootcount=$bootcount); fi;
388 int do_pcie_test(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
396 return cmd_usage(cmdtp);
399 * Check if the PCIe device is detected (sometimes its not available
403 /* Check for PCIe device on PCIe port/bus 0 */
404 bdf = PCI_BDF(0, 1, 0);
405 ret = pcie_get_link_speed_width(bdf, &speed, &width);
407 /* PCIe device not found! */
408 printf("Failed to find PCIe device @ BDF %d.%d.%d\n",
409 PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf));
410 return CMD_RET_FAILURE;
413 printf("Established speed=%d width=%d\n", speed, width);
414 if ((speed != 1 || width != 1)) {
415 printf("Detected incorrect speed/width!!!\n");
416 return CMD_RET_FAILURE;
419 /* Check for PCIe device on PCIe port/bus 1 */
420 bdf = PCI_BDF(1, 1, 0);
421 ret = pcie_get_link_speed_width(bdf, &speed, &width);
423 /* PCIe device not found! */
424 printf("Failed to find PCIe device @ BDF %d.%d.%d\n",
425 PCI_BUS(bdf), PCI_DEV(bdf), PCI_FUNC(bdf));
426 return CMD_RET_FAILURE;
429 printf("Established speed=%d width=%d\n", speed, width);
430 if ((speed != 2 || width != 4)) {
431 printf("Detected incorrect speed/width!!!\n");
432 return CMD_RET_FAILURE;
435 return CMD_RET_SUCCESS;
439 pcie, 1, 0, do_pcie_test,
440 "Test for presence of a PCIe devices with correct link",