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Diffstat (limited to 'board/gumstix/pepper/board.c')
| -rw-r--r-- | board/gumstix/pepper/board.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/board/gumstix/pepper/board.c b/board/gumstix/pepper/board.c new file mode 100644 index 0000000..75aac49 --- /dev/null +++ b/board/gumstix/pepper/board.c @@ -0,0 +1,226 @@ +/* + * Board functions for Gumstix Pepper and AM335x-based boards + * + * Copyright (C) 2014, Gumstix, Incorporated - http://www.gumstix.com/ + * Based on board/ti/am335x/board.c from Texas Instruments, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.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/mmc_host_def.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/mem.h> +#include <asm/io.h> +#include <asm/emif.h> +#include <asm/gpio.h> +#include <i2c.h> +#include <miiphy.h> +#include <cpsw.h> +#include <power/tps65217.h> +#include <environment.h> +#include <watchdog.h> +#include "board.h" + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_SPL_BUILD +static const struct ddr_data ddr2_data = { + .datardsratio0 = ((MT47H128M16RT25E_RD_DQS<<30) | + (MT47H128M16RT25E_RD_DQS<<20) | + (MT47H128M16RT25E_RD_DQS<<10) | + (MT47H128M16RT25E_RD_DQS<<0)), + .datawdsratio0 = ((MT47H128M16RT25E_WR_DQS<<30) | + (MT47H128M16RT25E_WR_DQS<<20) | + (MT47H128M16RT25E_WR_DQS<<10) | + (MT47H128M16RT25E_WR_DQS<<0)), + .datawiratio0 = ((MT47H128M16RT25E_PHY_WRLVL<<30) | + (MT47H128M16RT25E_PHY_WRLVL<<20) | + (MT47H128M16RT25E_PHY_WRLVL<<10) | + (MT47H128M16RT25E_PHY_WRLVL<<0)), + .datagiratio0 = ((MT47H128M16RT25E_PHY_GATELVL<<30) | + (MT47H128M16RT25E_PHY_GATELVL<<20) | + (MT47H128M16RT25E_PHY_GATELVL<<10) | + (MT47H128M16RT25E_PHY_GATELVL<<0)), + .datafwsratio0 = ((MT47H128M16RT25E_PHY_FIFO_WE<<30) | + (MT47H128M16RT25E_PHY_FIFO_WE<<20) | + (MT47H128M16RT25E_PHY_FIFO_WE<<10) | + (MT47H128M16RT25E_PHY_FIFO_WE<<0)), + .datawrsratio0 = ((MT47H128M16RT25E_PHY_WR_DATA<<30) | + (MT47H128M16RT25E_PHY_WR_DATA<<20) | + (MT47H128M16RT25E_PHY_WR_DATA<<10) | + (MT47H128M16RT25E_PHY_WR_DATA<<0)), +}; + +static const struct cmd_control ddr2_cmd_ctrl_data = { + .cmd0csratio = MT47H128M16RT25E_RATIO, + .cmd0iclkout = MT47H128M16RT25E_INVERT_CLKOUT, + + .cmd1csratio = MT47H128M16RT25E_RATIO, + .cmd1iclkout = MT47H128M16RT25E_INVERT_CLKOUT, + + .cmd2csratio = MT47H128M16RT25E_RATIO, + .cmd2iclkout = MT47H128M16RT25E_INVERT_CLKOUT, +}; + +static const struct emif_regs ddr2_emif_reg_data = { + .sdram_config = MT47H128M16RT25E_EMIF_SDCFG, + .ref_ctrl = MT47H128M16RT25E_EMIF_SDREF, + .sdram_tim1 = MT47H128M16RT25E_EMIF_TIM1, + .sdram_tim2 = MT47H128M16RT25E_EMIF_TIM2, + .sdram_tim3 = MT47H128M16RT25E_EMIF_TIM3, + .emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY, +}; + +#ifdef CONFIG_SPL_OS_BOOT +int spl_start_uboot(void) +{ + /* break into full u-boot on 'c' */ + return serial_tstc() && serial_getc() == 'c'; +} +#endif + +#define OSC (V_OSCK/1000000) +const struct dpll_params dpll_ddr = {266, OSC-1, 1, -1, -1, -1, -1}; + +const struct dpll_params *get_dpll_ddr_params(void) +{ + return &dpll_ddr; +} + +void set_uart_mux_conf(void) +{ + enable_uart0_pin_mux(); +} + +void set_mux_conf_regs(void) +{ + enable_board_pin_mux(); +} + +const struct ctrl_ioregs ioregs = { + .cm0ioctl = MT47H128M16RT25E_IOCTRL_VALUE, + .cm1ioctl = MT47H128M16RT25E_IOCTRL_VALUE, + .cm2ioctl = MT47H128M16RT25E_IOCTRL_VALUE, + .dt0ioctl = MT47H128M16RT25E_IOCTRL_VALUE, + .dt1ioctl = MT47H128M16RT25E_IOCTRL_VALUE, +}; + +void sdram_init(void) +{ + config_ddr(266, &ioregs, &ddr2_data, + &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0); +} +#endif + +int board_init(void) +{ +#if defined(CONFIG_HW_WATCHDOG) + hw_watchdog_init(); +#endif + + gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; + gpmc_init(); + + return 0; +} + +#if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \ + (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD)) +static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; + +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_RGMII, + }, +}; + +static struct cpsw_platform_data cpsw_data = { + .mdio_base = CPSW_MDIO_BASE, + .cpsw_base = CPSW_BASE, + .mdio_div = 0xff, + .channels = 8, + .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, +}; + +int board_eth_init(bd_t *bis) +{ + int rv, n = 0; + uint8_t mac_addr[6]; + uint32_t mac_hi, mac_lo; + const char *devname; + + if (!eth_getenv_enetaddr("ethaddr", mac_addr)) { + /* try reading mac address from efuse */ + mac_lo = readl(&cdev->macid0l); + mac_hi = readl(&cdev->macid0h); + mac_addr[0] = mac_hi & 0xFF; + mac_addr[1] = (mac_hi & 0xFF00) >> 8; + mac_addr[2] = (mac_hi & 0xFF0000) >> 16; + mac_addr[3] = (mac_hi & 0xFF000000) >> 24; + mac_addr[4] = mac_lo & 0xFF; + mac_addr[5] = (mac_lo & 0xFF00) >> 8; + if (is_valid_ether_addr(mac_addr)) + eth_setenv_enetaddr("ethaddr", mac_addr); + } + + writel((RGMII_MODE_ENABLE | RGMII_INT_DELAY), &cdev->miisel); + + rv = cpsw_register(&cpsw_data); + if (rv < 0) + printf("Error %d registering CPSW switch\n", rv); + else + n += rv; + + /* + * + * CPSW RGMII Internal Delay Mode is not supported in all PVT + * operating points. So we must set the TX clock delay feature + * in the KSZ9021 PHY. Since we only support a single ethernet + * device in U-Boot, we only do this for the current instance. + */ + devname = miiphy_get_current_dev(); + /* max rx/tx clock delay, min rx/tx control delay */ + miiphy_write(devname, 0x0, 0x0b, 0x8104); + miiphy_write(devname, 0x0, 0xc, 0xa0a0); + + /* min rx data delay */ + miiphy_write(devname, 0x0, 0x0b, 0x8105); + miiphy_write(devname, 0x0, 0x0c, 0x0000); + + /* min tx data delay */ + miiphy_write(devname, 0x0, 0x0b, 0x8106); + miiphy_write(devname, 0x0, 0x0c, 0x0000); + + return n; +} +#endif |