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author | 2023-10-10 14:33:42 +0000 | |
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committer | 2023-10-10 14:33:42 +0000 | |
commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/board/BuR/brppt1/board.c | |
parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/board/BuR/brppt1/board.c')
-rw-r--r-- | roms/u-boot/board/BuR/brppt1/board.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/roms/u-boot/board/BuR/brppt1/board.c b/roms/u-boot/board/BuR/brppt1/board.c new file mode 100644 index 000000000..7df37e4e6 --- /dev/null +++ b/roms/u-boot/board/BuR/brppt1/board.c @@ -0,0 +1,193 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * board.c + * + * Board functions for B&R BRPPT1 + * + * Copyright (C) 2013 Hannes Schmelzer <oe5hpm@oevsv.at> + * Bernecker & Rainer Industrieelektronik GmbH - http://www.br-automation.com + * + */ + +#include <common.h> +#include <bootcount.h> +#include <env.h> +#include <errno.h> +#include <init.h> +#include <spl.h> +#include <asm/arch/cpu.h> +#include <asm/arch/hardware.h> +#include <asm/arch/omap.h> +#include <asm/arch/ddr_defs.h> +#include <asm/arch/clock.h> +#include <asm/arch/gpio.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/mem.h> +#include <asm/global_data.h> +#include <asm/io.h> +#include <asm/emif.h> +#include <asm/gpio.h> +#include <i2c.h> +#include <power/tps65217.h> +#include "../common/bur_common.h" +#include <watchdog.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* --------------------------------------------------------------------------*/ +/* -- defines for GPIO -- */ +#define REPSWITCH (0+20) /* GPIO0_20 */ + +#if defined(CONFIG_SPL_BUILD) +/* TODO: check ram-timing ! */ +static const struct ddr_data ddr3_data = { + .datardsratio0 = MT41K256M16HA125E_RD_DQS, + .datawdsratio0 = MT41K256M16HA125E_WR_DQS, + .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE, + .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA, +}; + +static const struct cmd_control ddr3_cmd_ctrl_data = { + .cmd0csratio = MT41K256M16HA125E_RATIO, + .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT, + + .cmd1csratio = MT41K256M16HA125E_RATIO, + .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT, + + .cmd2csratio = MT41K256M16HA125E_RATIO, + .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT, +}; + +static struct emif_regs ddr3_emif_reg_data = { + .sdram_config = MT41K256M16HA125E_EMIF_SDCFG, + .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF, + .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1, + .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2, + .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3, + .zq_config = MT41K256M16HA125E_ZQ_CFG, + .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY, +}; + +static const struct ctrl_ioregs ddr3_ioregs = { + .cm0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .cm1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .cm2ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .dt0ioctl = MT41K256M16HA125E_IOCTRL_VALUE, + .dt1ioctl = MT41K256M16HA125E_IOCTRL_VALUE, +}; + +#define OSC (V_OSCK/1000000) +static const struct dpll_params dpll_ddr3 = { 400, OSC-1, 1, -1, -1, -1, -1}; + +void am33xx_spl_board_init(void) +{ + int rc; + + struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER; + /*struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP;*/ + struct cm_dpll *const cmdpll = (struct cm_dpll *)CM_DPLL; + + /* + * in TRM they write a reset value of 1 (=CLK_M_OSC) for the + * CLKSEL_TIMER6_CLK Register, in fact reset value is 0, so we need set + * the source of timer6 clk to CLK_M_OSC + */ + writel(0x01, &cmdpll->clktimer6clk); + + /* enable additional clocks of modules which are accessed later */ + u32 *const clk_domains[] = { + &cmper->lcdcclkstctrl, + 0 + }; + + u32 *const clk_modules_tsspecific[] = { + &cmper->lcdclkctrl, + &cmper->timer5clkctrl, + &cmper->timer6clkctrl, + 0 + }; + do_enable_clocks(clk_domains, clk_modules_tsspecific, 1); + + /* setup I2C */ + enable_i2c_pin_mux(); + + pmicsetup(0, 0); + + /* peripheral reset */ + rc = gpio_request(64 + 29, "GPMC_WAIT1"); + if (rc != 0) + printf("cannot request GPMC_WAIT1 GPIO!\n"); + rc = gpio_direction_output(64 + 29, 1); + if (rc != 0) + printf("cannot set GPMC_WAIT1 GPIO!\n"); + + rc = gpio_request(64 + 28, "GPMC_WAIT0"); + if (rc != 0) + printf("cannot request GPMC_WAIT0 GPIO!\n"); + rc = gpio_direction_output(64 + 28, 1); + if (rc != 0) + printf("cannot set GPMC_WAIT0 GPIO!\n"); + +} + +const struct dpll_params *get_dpll_ddr_params(void) +{ + return &dpll_ddr3; +} + +void sdram_init(void) +{ + config_ddr(400, &ddr3_ioregs, + &ddr3_data, + &ddr3_cmd_ctrl_data, + &ddr3_emif_reg_data, 0); +} +#endif /* CONFIG_SPL_BUILD */ + +/* Basic board specific setup. Pinmux has been handled already. */ +int board_init(void) +{ +#if defined(CONFIG_HW_WATCHDOG) + hw_watchdog_init(); +#endif + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; +#ifdef CONFIG_MTD_RAW_NAND + gpmc_init(); +#endif + return 0; +} + +#ifdef CONFIG_BOARD_LATE_INIT +static char *bootmodeascii[16] = { + "BOOT", "reserved", "reserved", "reserved", + "RUN", "reserved", "reserved", "reserved", + "reserved", "reserved", "reserved", "reserved", + "PME", "reserved", "reserved", "DIAG", +}; + +int board_late_init(void) +{ + unsigned char bmode = 0; + ulong bootcount = 0; + int rc; + + bootcount = bootcount_load() & 0xF; + + rc = gpio_request(REPSWITCH, "REPSWITCH"); + + if (rc != 0 || gpio_get_value(REPSWITCH) == 0 || bootcount == 12) + bmode = 12; + else if (bootcount > 0) + bmode = 0; + else + bmode = 4; + + printf("Mode: %s\n", bootmodeascii[bmode & 0x0F]); + env_set_ulong("b_mode", bmode); + + /* get sure that bootcmd isn't affected by any bootcount value */ + env_set_ulong("bootlimit", 0); + + return 0; +} +#endif /* CONFIG_BOARD_LATE_INIT */ |