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https://github.com/brain-hackers/u-boot-brain
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![Stefan Roese](/assets/img/avatar_default.png)
The switch HW reset results in a disconnection of the switch port daisy- chain for a few seconds. This is not desired in the normal field use case. So lets remove this switch reset from the normal bootup sequence and move it into a board specific command. This way it can be executed in the development environment when really needed. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Roger Meier <r.meier@siemens.com> Cc: Lukas Stockmann <lukas.stockmann@siemens.com> Cc: Tom Rini <trini@ti.com>
268 lines
7.1 KiB
C
268 lines
7.1 KiB
C
/*
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* Board functions for TI AM335X based dxr2 board
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* (C) Copyright 2013 Siemens Schweiz AG
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* (C) Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*
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* Based on:
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*
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* Board functions for TI AM335X based boards
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* u-boot:/board/ti/am335x/board.c
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*
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* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <errno.h>
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#include <spl.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/omap.h>
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#include <asm/arch/ddr_defs.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/mmc_host_def.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/io.h>
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#include <asm/emif.h>
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#include <asm/gpio.h>
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#include <i2c.h>
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#include <miiphy.h>
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#include <cpsw.h>
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#include <watchdog.h>
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#include "board.h"
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#include "../common/factoryset.h"
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_SPL_BUILD
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static struct dxr2_baseboard_id __attribute__((section(".data"))) settings;
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/* @303MHz-i0 */
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const struct ddr3_data ddr3_default = {
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0x33524444, 0x56312e34, 0x0080, 0x0000, 0x0038, 0x003E, 0x00A4,
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0x0075, 0x0888A39B, 0x26247FDA, 0x501F821F, 0x00100206, 0x61A44A32,
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0x00000618, 0x0000014A,
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};
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static void set_default_ddr3_timings(void)
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{
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printf("Set default DDR3 settings\n");
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settings.ddr3 = ddr3_default;
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}
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static void print_ddr3_timings(void)
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{
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printf("\n\nDDR3 Timing parameters:\n");
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printf("Diff Eeprom Default\n");
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PRINTARGS(magic);
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PRINTARGS(version);
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PRINTARGS(ddr3_sratio);
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PRINTARGS(iclkout);
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PRINTARGS(dt0rdsratio0);
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PRINTARGS(dt0wdsratio0);
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PRINTARGS(dt0fwsratio0);
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PRINTARGS(dt0wrsratio0);
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PRINTARGS(sdram_tim1);
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PRINTARGS(sdram_tim2);
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PRINTARGS(sdram_tim3);
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PRINTARGS(emif_ddr_phy_ctlr_1);
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PRINTARGS(sdram_config);
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PRINTARGS(ref_ctrl);
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PRINTARGS(ioctr_val);
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}
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static void print_chip_data(void)
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{
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printf("\n");
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printf("Device: '%s'\n", settings.chip.sdevname);
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printf("HW version: '%s'\n", settings.chip.shwver);
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}
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#endif /* CONFIG_SPL_BUILD */
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/*
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* Read header information from EEPROM into global structure.
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*/
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static int read_eeprom(void)
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{
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/* Check if baseboard eeprom is available */
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if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
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printf("Could not probe the EEPROM; something fundamentally wrong on the I2C bus.\n");
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return 1;
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}
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#ifdef CONFIG_SPL_BUILD
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/* Read Siemens eeprom data (DDR3) */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_DDR3, 2,
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(uchar *)&settings.ddr3, sizeof(struct ddr3_data))) {
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printf("Could not read the EEPROM; something fundamentally wrong on the I2C bus.\nUse default DDR3 timings\n");
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set_default_ddr3_timings();
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}
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/* Read Siemens eeprom data (CHIP) */
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if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, EEPROM_ADDR_CHIP, 2,
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(uchar *)&settings.chip, sizeof(settings.chip)))
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printf("Could not read chip settings\n");
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if (ddr3_default.magic == settings.ddr3.magic &&
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ddr3_default.version == settings.ddr3.version) {
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printf("Using DDR3 settings from EEPROM\n");
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} else {
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if (ddr3_default.magic != settings.ddr3.magic)
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printf("Error: No valid DDR3 data in eeprom.\n");
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if (ddr3_default.version != settings.ddr3.version)
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printf("Error: DDR3 data version does not match.\n");
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printf("Using default settings\n");
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set_default_ddr3_timings();
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}
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if (MAGIC_CHIP == settings.chip.magic) {
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printf("Valid chip data in eeprom\n");
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print_chip_data();
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} else {
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printf("Error: No chip data in eeprom\n");
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}
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print_ddr3_timings();
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#endif
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return 0;
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}
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#ifdef CONFIG_SPL_BUILD
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static void board_init_ddr(void)
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{
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struct emif_regs dxr2_ddr3_emif_reg_data = {
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.zq_config = 0x50074BE4,
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};
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struct ddr_data dxr2_ddr3_data = {
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};
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struct cmd_control dxr2_ddr3_cmd_ctrl_data = {
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};
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struct ctrl_ioregs dxr2_ddr3_ioregs = {
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};
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/* pass values from eeprom */
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dxr2_ddr3_emif_reg_data.sdram_tim1 = settings.ddr3.sdram_tim1;
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dxr2_ddr3_emif_reg_data.sdram_tim2 = settings.ddr3.sdram_tim2;
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dxr2_ddr3_emif_reg_data.sdram_tim3 = settings.ddr3.sdram_tim3;
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dxr2_ddr3_emif_reg_data.emif_ddr_phy_ctlr_1 =
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settings.ddr3.emif_ddr_phy_ctlr_1;
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dxr2_ddr3_emif_reg_data.sdram_config = settings.ddr3.sdram_config;
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dxr2_ddr3_emif_reg_data.ref_ctrl = settings.ddr3.ref_ctrl;
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dxr2_ddr3_data.datardsratio0 = settings.ddr3.dt0rdsratio0;
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dxr2_ddr3_data.datawdsratio0 = settings.ddr3.dt0wdsratio0;
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dxr2_ddr3_data.datafwsratio0 = settings.ddr3.dt0fwsratio0;
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dxr2_ddr3_data.datawrsratio0 = settings.ddr3.dt0wrsratio0;
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dxr2_ddr3_cmd_ctrl_data.cmd0csratio = settings.ddr3.ddr3_sratio;
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dxr2_ddr3_cmd_ctrl_data.cmd0iclkout = settings.ddr3.iclkout;
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dxr2_ddr3_cmd_ctrl_data.cmd1csratio = settings.ddr3.ddr3_sratio;
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dxr2_ddr3_cmd_ctrl_data.cmd1iclkout = settings.ddr3.iclkout;
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dxr2_ddr3_cmd_ctrl_data.cmd2csratio = settings.ddr3.ddr3_sratio;
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dxr2_ddr3_cmd_ctrl_data.cmd2iclkout = settings.ddr3.iclkout;
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dxr2_ddr3_ioregs.cm0ioctl = settings.ddr3.ioctr_val,
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dxr2_ddr3_ioregs.cm1ioctl = settings.ddr3.ioctr_val,
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dxr2_ddr3_ioregs.cm2ioctl = settings.ddr3.ioctr_val,
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dxr2_ddr3_ioregs.dt0ioctl = settings.ddr3.ioctr_val,
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dxr2_ddr3_ioregs.dt1ioctl = settings.ddr3.ioctr_val,
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config_ddr(DDR_PLL_FREQ, &dxr2_ddr3_ioregs, &dxr2_ddr3_data,
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&dxr2_ddr3_cmd_ctrl_data, &dxr2_ddr3_emif_reg_data, 0);
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}
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static void spl_siemens_board_init(void)
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{
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return;
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}
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#endif /* if def CONFIG_SPL_BUILD */
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#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
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(defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
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static void cpsw_control(int enabled)
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{
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/* VTP can be added here */
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return;
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}
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static struct cpsw_slave_data cpsw_slaves[] = {
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{
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.slave_reg_ofs = 0x208,
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.sliver_reg_ofs = 0xd80,
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.phy_addr = 0,
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.phy_if = PHY_INTERFACE_MODE_MII,
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},
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};
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static struct cpsw_platform_data cpsw_data = {
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.mdio_base = CPSW_MDIO_BASE,
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.cpsw_base = CPSW_BASE,
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.mdio_div = 0xff,
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.channels = 4,
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.cpdma_reg_ofs = 0x800,
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.slaves = 1,
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.slave_data = cpsw_slaves,
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.ale_reg_ofs = 0xd00,
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.ale_entries = 1024,
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.host_port_reg_ofs = 0x108,
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.hw_stats_reg_ofs = 0x900,
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.bd_ram_ofs = 0x2000,
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.mac_control = (1 << 5),
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.control = cpsw_control,
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.host_port_num = 0,
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.version = CPSW_CTRL_VERSION_2,
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};
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#if defined(CONFIG_DRIVER_TI_CPSW) || \
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(defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
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int board_eth_init(bd_t *bis)
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{
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struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
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int n = 0;
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int rv;
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factoryset_setenv();
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/* Set rgmii mode and enable rmii clock to be sourced from chip */
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writel((RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE), &cdev->miisel);
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rv = cpsw_register(&cpsw_data);
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if (rv < 0)
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printf("Error %d registering CPSW switch\n", rv);
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else
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n += rv;
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return n;
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}
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static int do_switch_reset(cmd_tbl_t *cmdtp, int flag, int argc,
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char *const argv[])
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{
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/* Reset SMSC LAN9303 switch for default configuration */
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gpio_request(GPIO_LAN9303_NRST, "nRST");
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gpio_direction_output(GPIO_LAN9303_NRST, 0);
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/* assert active low reset for 200us */
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udelay(200);
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gpio_set_value(GPIO_LAN9303_NRST, 1);
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return 0;
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};
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U_BOOT_CMD(
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switch_rst, CONFIG_SYS_MAXARGS, 1, do_switch_reset,
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"Reset LAN9303 switch via its reset pin",
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""
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);
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#endif /* #if defined(CONFIG_DRIVER_TI_CPSW) */
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#endif /* #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) */
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#include "../common/board.c"
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