| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Board functions for TI AM335X based draco board |
| * (C) Copyright 2013 Siemens Schweiz AG |
| * (C) Heiko Schocher, DENX Software Engineering, hs@denx.de. |
| * |
| * Based on: |
| * |
| * Board functions for TI AM335X based boards |
| * u-boot:/board/ti/am335x/board.c |
| * |
| * Copyright (C) 2011, Texas Instruments, Incorporated - https://www.ti.com/ |
| */ |
| |
| #include <command.h> |
| #include <cpsw.h> |
| #include <env.h> |
| #include <init.h> |
| #include <linux/delay.h> |
| #include <nand.h> |
| #include <asm/arch/clock.h> |
| #include <asm/arch/ddr_defs.h> |
| #include <asm/arch/mem.h> |
| #include <asm/arch/sys_proto.h> |
| #include <asm/gpio.h> |
| #include <asm/io.h> |
| #include "board.h" |
| #include "../common/eeprom.h" |
| #include "../common/factoryset.h" |
| |
| #ifdef CONFIG_SPL_BUILD |
| static struct draco_baseboard_id __section(".data") settings; |
| |
| #if DDR_PLL_FREQ == 303 |
| #if !defined(CONFIG_TARGET_ETAMIN) |
| /* Default@303MHz-i0 */ |
| const struct ddr3_data ddr3_default = { |
| 0x33524444, 0x56312e35, 0x0080, 0x0000, 0x003A, 0x003F, 0x009F, |
| 0x0079, 0x0888A39B, 0x26517FDA, 0x501F84EF, 0x00100206, 0x61A44A32, |
| 0x0000093B, 0x0000014A, |
| "default name @303MHz \0", |
| "default marking \0", |
| }; |
| #else |
| /* etamin board */ |
| const struct ddr3_data ddr3_default = { |
| 0x33524444, 0x56312e36, 0x0080, 0x0000, 0x003A, 0x0010, 0x009F, |
| 0x0050, 0x0888A39B, 0x266D7FDA, 0x501F86AF, 0x00100206, 0x61A44BB2, |
| 0x0000093B, 0x0000018A, |
| "test-etamin \0", |
| "generic-8Gbit \0", |
| }; |
| #endif |
| #elif DDR_PLL_FREQ == 400 |
| /* Default@400MHz-i0 */ |
| const struct ddr3_data ddr3_default = { |
| 0x33524444, 0x56312e35, 0x0080, 0x0000, 0x0039, 0x0046, 0x00ab, |
| 0x0080, 0x0AAAA4DB, 0x26307FDA, 0x501F821F, 0x00100207, 0x61A45232, |
| 0x00000618, 0x0000014A, |
| "default name @400MHz \0", |
| "default marking \0", |
| }; |
| #endif |
| |
| static void set_default_ddr3_timings(void) |
| { |
| printf("Set default DDR3 settings\n"); |
| settings.ddr3 = ddr3_default; |
| } |
| |
| static void print_ddr3_timings(void) |
| { |
| printf("\nDDR3\n"); |
| printf("clock:\t\t%d MHz\n", DDR_PLL_FREQ); |
| printf("device:\t\t%s\n", settings.ddr3.manu_name); |
| printf("marking:\t%s\n", settings.ddr3.manu_marking); |
| printf("%-20s, %-8s, %-8s, %-4s\n", "timing parameters", "eeprom", |
| "default", "diff"); |
| PRINTARGS(magic); |
| PRINTARGS(version); |
| PRINTARGS(ddr3_sratio); |
| PRINTARGS(iclkout); |
| |
| PRINTARGS(dt0rdsratio0); |
| PRINTARGS(dt0wdsratio0); |
| PRINTARGS(dt0fwsratio0); |
| PRINTARGS(dt0wrsratio0); |
| |
| PRINTARGS(sdram_tim1); |
| PRINTARGS(sdram_tim2); |
| PRINTARGS(sdram_tim3); |
| |
| PRINTARGS(emif_ddr_phy_ctlr_1); |
| |
| PRINTARGS(sdram_config); |
| PRINTARGS(ref_ctrl); |
| PRINTARGS(ioctr_val); |
| } |
| |
| static void print_chip_data(void) |
| { |
| struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; |
| dpll_mpu_opp100.m = am335x_get_efuse_mpu_max_freq(cdev); |
| printf("\nCPU BOARD\n"); |
| printf("device: \t'%s'\n", settings.chip.sdevname); |
| printf("hw version: \t'%s'\n", settings.chip.shwver); |
| printf("max freq: \t%d MHz\n", dpll_mpu_opp100.m); |
| } |
| #endif /* CONFIG_SPL_BUILD */ |
| |
| #define AM335X_NAND_ECC_MASK 0x0f |
| #define AM335X_NAND_ECC_TYPE_16 0x02 |
| |
| static int ecc_type; |
| |
| struct am335x_nand_geometry { |
| u32 magic; |
| u8 nand_geo_addr; |
| u8 nand_geo_page; |
| u8 nand_bus; |
| }; |
| |
| static int draco_read_nand_geometry(void) |
| { |
| struct am335x_nand_geometry geo; |
| |
| /* Read NAND geometry */ |
| if (siemens_ee_read_data(SIEMENS_EE_ADDR_NAND_GEO, (uchar *)&geo, |
| sizeof(struct am335x_nand_geometry))) { |
| printf("Could not read the NAND geomtery; something fundamentally wrong on the I2C bus.\n"); |
| return -EIO; |
| } |
| if (geo.magic != 0xa657b310) { |
| printf("%s: bad magic: %x\n", __func__, geo.magic); |
| return -EFAULT; |
| } |
| if ((geo.nand_bus & AM335X_NAND_ECC_MASK) == AM335X_NAND_ECC_TYPE_16) |
| ecc_type = 16; |
| else |
| ecc_type = 8; |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_SPL_BUILD |
| /* |
| * Read header information from EEPROM into global structure. |
| */ |
| int draco_read_eeprom(void) |
| { |
| /* Read Siemens eeprom data (DDR3) */ |
| if (siemens_ee_read_data(SIEMENS_EE_ADDR_DDR3, (uchar *)&settings.ddr3, |
| sizeof(struct ddr3_data))) { |
| printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\nUse default DDR3 timings\n"); |
| set_default_ddr3_timings(); |
| } |
| /* Read Siemens eeprom data (CHIP) */ |
| if (siemens_ee_read_data(SIEMENS_EE_ADDR_CHIP, (uchar *)&settings.chip, |
| sizeof(settings.chip))) |
| printf("Could not read chip settings\n"); |
| |
| if (ddr3_default.magic == settings.ddr3.magic && |
| ddr3_default.version == settings.ddr3.version) { |
| printf("Using DDR3 settings from EEPROM\n"); |
| } else { |
| if (ddr3_default.magic != settings.ddr3.magic) |
| printf("Warning: No valid DDR3 data in eeprom.\n"); |
| if (ddr3_default.version != settings.ddr3.version) |
| printf("Warning: DDR3 data version does not match.\n"); |
| |
| printf("Using default settings\n"); |
| set_default_ddr3_timings(); |
| } |
| |
| if (MAGIC_CHIP == settings.chip.magic) |
| print_chip_data(); |
| else |
| printf("Warning: No chip data in eeprom\n"); |
| |
| print_ddr3_timings(); |
| |
| return draco_read_nand_geometry(); |
| } |
| |
| void draco_init_ddr(void) |
| { |
| struct emif_regs draco_ddr3_emif_reg_data = { |
| .zq_config = 0x50074BE4, |
| }; |
| |
| struct ddr_data draco_ddr3_data = { |
| }; |
| |
| struct cmd_control draco_ddr3_cmd_ctrl_data = { |
| }; |
| |
| struct ctrl_ioregs draco_ddr3_ioregs = { |
| }; |
| |
| /* pass values from eeprom */ |
| draco_ddr3_emif_reg_data.sdram_tim1 = settings.ddr3.sdram_tim1; |
| draco_ddr3_emif_reg_data.sdram_tim2 = settings.ddr3.sdram_tim2; |
| draco_ddr3_emif_reg_data.sdram_tim3 = settings.ddr3.sdram_tim3; |
| draco_ddr3_emif_reg_data.emif_ddr_phy_ctlr_1 = |
| settings.ddr3.emif_ddr_phy_ctlr_1; |
| draco_ddr3_emif_reg_data.sdram_config = settings.ddr3.sdram_config; |
| draco_ddr3_emif_reg_data.sdram_config2 = 0x08000000; |
| draco_ddr3_emif_reg_data.ref_ctrl = settings.ddr3.ref_ctrl; |
| |
| draco_ddr3_data.datardsratio0 = settings.ddr3.dt0rdsratio0; |
| draco_ddr3_data.datawdsratio0 = settings.ddr3.dt0wdsratio0; |
| draco_ddr3_data.datafwsratio0 = settings.ddr3.dt0fwsratio0; |
| draco_ddr3_data.datawrsratio0 = settings.ddr3.dt0wrsratio0; |
| |
| draco_ddr3_cmd_ctrl_data.cmd0csratio = settings.ddr3.ddr3_sratio; |
| draco_ddr3_cmd_ctrl_data.cmd0iclkout = settings.ddr3.iclkout; |
| draco_ddr3_cmd_ctrl_data.cmd1csratio = settings.ddr3.ddr3_sratio; |
| draco_ddr3_cmd_ctrl_data.cmd1iclkout = settings.ddr3.iclkout; |
| draco_ddr3_cmd_ctrl_data.cmd2csratio = settings.ddr3.ddr3_sratio; |
| draco_ddr3_cmd_ctrl_data.cmd2iclkout = settings.ddr3.iclkout; |
| |
| draco_ddr3_ioregs.cm0ioctl = settings.ddr3.ioctr_val, |
| draco_ddr3_ioregs.cm1ioctl = settings.ddr3.ioctr_val, |
| draco_ddr3_ioregs.cm2ioctl = settings.ddr3.ioctr_val, |
| draco_ddr3_ioregs.dt0ioctl = settings.ddr3.ioctr_val, |
| draco_ddr3_ioregs.dt1ioctl = settings.ddr3.ioctr_val, |
| |
| config_ddr(DDR_PLL_FREQ, &draco_ddr3_ioregs, &draco_ddr3_data, |
| &draco_ddr3_cmd_ctrl_data, &draco_ddr3_emif_reg_data, 0); |
| } |
| |
| void spl_draco_board_init(void) |
| { |
| return; |
| } |
| #endif /* if def CONFIG_SPL_BUILD */ |
| |
| #ifdef CONFIG_BOARD_LATE_INIT |
| int board_late_init(void) |
| { |
| int ret; |
| |
| ret = draco_read_nand_geometry(); |
| if (ret != 0) |
| return ret; |
| |
| nand_curr_device = 0; |
| omap_nand_switch_ecc(1, ecc_type); |
| #ifdef CONFIG_TARGET_ETAMIN |
| nand_curr_device = 1; |
| omap_nand_switch_ecc(1, ecc_type); |
| #endif |
| #ifdef CONFIG_FACTORYSET |
| /* Set ASN in environment*/ |
| if (factory_dat.asn[0] != 0) { |
| env_set("dtb_name", (char *)factory_dat.asn); |
| } else { |
| /* dtb suffix gets added in load script */ |
| env_set("dtb_name", "am335x-draco"); |
| } |
| #else |
| env_set("dtb_name", "am335x-draco"); |
| #endif |
| |
| return 0; |
| } |
| #endif |
| |
| #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \ |
| (defined(CONFIG_SPL_ETH) && defined(CONFIG_SPL_BUILD)) |
| static void cpsw_control(int enabled) |
| { |
| /* VTP can be added here */ |
| |
| return; |
| } |
| |
| static struct cpsw_slave_data cpsw_slaves[] = { |
| { |
| .slave_reg_ofs = 0x208, |
| .sliver_reg_ofs = 0xd80, |
| .phy_addr = 0, |
| .phy_if = PHY_INTERFACE_MODE_MII, |
| }, |
| }; |
| |
| static struct cpsw_platform_data cpsw_data = { |
| .mdio_base = CPSW_MDIO_BASE, |
| .cpsw_base = CPSW_BASE, |
| .mdio_div = 0xff, |
| .channels = 4, |
| .cpdma_reg_ofs = 0x800, |
| .slaves = 1, |
| .slave_data = cpsw_slaves, |
| .ale_reg_ofs = 0xd00, |
| .ale_entries = 1024, |
| .host_port_reg_ofs = 0x108, |
| .hw_stats_reg_ofs = 0x900, |
| .bd_ram_ofs = 0x2000, |
| .mac_control = (1 << 5), |
| .control = cpsw_control, |
| .host_port_num = 0, |
| .version = CPSW_CTRL_VERSION_2, |
| }; |
| |
| #if defined(CONFIG_DRIVER_TI_CPSW) || \ |
| (defined(CONFIG_USB_ETHER) && defined(CONFIG_USB_MUSB_GADGET)) |
| int board_eth_init(struct bd_info *bis) |
| { |
| struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; |
| int n = 0; |
| int rv; |
| |
| factoryset_env_set(); |
| |
| /* Set rgmii mode and enable rmii clock to be sourced from chip */ |
| writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel); |
| |
| rv = cpsw_register(&cpsw_data); |
| if (rv < 0) |
| printf("Error %d registering CPSW switch\n", rv); |
| else |
| n += rv; |
| return n; |
| } |
| |
| static int do_switch_reset(struct cmd_tbl *cmdtp, int flag, int argc, |
| char *const argv[]) |
| { |
| /* Reset SMSC LAN9303 switch for default configuration */ |
| gpio_request(GPIO_LAN9303_NRST, "nRST"); |
| gpio_direction_output(GPIO_LAN9303_NRST, 0); |
| /* assert active low reset for 200us */ |
| udelay(200); |
| gpio_set_value(GPIO_LAN9303_NRST, 1); |
| |
| return 0; |
| }; |
| |
| U_BOOT_CMD( |
| switch_rst, CONFIG_SYS_MAXARGS, 1, do_switch_reset, |
| "Reset LAN9303 switch via its reset pin", |
| "" |
| ); |
| #endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */ |
| #endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */ |