This adds the Gumstix Pepper[1] single-board computer based on the TI AM335x processor. Schematics are available [2].

[1] https://store.gumstix.com/index.php/products/344/ [2] https://pubs.gumstix.com/boards/PEPPER/

Signed-off-by: Ash Charles ash@gumstix.com Cc: Tom Rini trini@ti.com --- board/gumstix/pepper/Makefile | 13 +++ board/gumstix/pepper/board.c | 226 ++++++++++++++++++++++++++++++++++++++++++ board/gumstix/pepper/board.h | 19 ++++ board/gumstix/pepper/mux.c | 78 +++++++++++++++ boards.cfg | 1 + include/configs/pepper.h | 100 +++++++++++++++++++ 6 files changed, 437 insertions(+) create mode 100644 board/gumstix/pepper/Makefile create mode 100644 board/gumstix/pepper/board.c create mode 100644 board/gumstix/pepper/board.h create mode 100644 board/gumstix/pepper/mux.c create mode 100644 include/configs/pepper.h

diff --git a/board/gumstix/pepper/Makefile b/board/gumstix/pepper/Makefile new file mode 100644 index 0000000..ecb1d61 --- /dev/null +++ b/board/gumstix/pepper/Makefile @@ -0,0 +1,13 @@ +# +# Makefile +# +# Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ +# +# SPDX-License-Identifier: GPL-2.0+ +# + +ifdef CONFIG_SPL_BUILD +obj-y += mux.o +endif + +obj-y += board.o diff --git a/board/gumstix/pepper/board.c b/board/gumstix/pepper/board.c new file mode 100644 index 0000000..0faf315 --- /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; + +static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; + +#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 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 diff --git a/board/gumstix/pepper/board.h b/board/gumstix/pepper/board.h new file mode 100644 index 0000000..0512735 --- /dev/null +++ b/board/gumstix/pepper/board.h @@ -0,0 +1,19 @@ +/* + * Gumstix Pepper and AM335x-based boards information header + * + * Copyright (C) 2014, Gumstix, Inc. - http://www.gumstix.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _BOARD_H_ +#define _BOARD_H_ + +/* + * We must be able to enable uart0, for initial output. We then have a + * main pinmux function that can be overridden to enable all other pinmux that + * is required on the board. + */ +void enable_uart0_pin_mux(void); +void enable_board_pin_mux(void); +#endif diff --git a/board/gumstix/pepper/mux.c b/board/gumstix/pepper/mux.c new file mode 100644 index 0000000..50b1266 --- /dev/null +++ b/board/gumstix/pepper/mux.c @@ -0,0 +1,78 @@ +/* + * Muxing for Gumstix Pepper and AM335x-based boards + * + * Copyright (C) 2014, Gumstix, Incorporated - http://www.gumstix.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <asm/arch/sys_proto.h> +#include <asm/arch/hardware.h> +#include <asm/arch/mux.h> +#include <asm/io.h> +#include <i2c.h> +#include "board.h" + +static struct module_pin_mux uart0_pin_mux[] = { + {OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* UART0_RXD */ + {OFFSET(uart0_txd), (MODE(0) | PULLUDEN)}, /* UART0_TXD */ + {-1}, +}; + +static struct module_pin_mux mmc0_pin_mux[] = { + {OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */ + {OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */ + {OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */ + {OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */ + {OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */ + {OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */ + {OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)}, /* MMC0_CD */ + {-1}, +}; + +static struct module_pin_mux i2c0_pin_mux[] = { + /* I2C_DATA */ + {OFFSET(i2c0_sda), (MODE(0) | RXACTIVE | PULLUDEN | SLEWCTRL)}, + /* I2C_SCLK */ + {OFFSET(i2c0_scl), (MODE(0) | RXACTIVE | PULLUDEN | SLEWCTRL)}, + {-1}, +}; + +static struct module_pin_mux rgmii1_pin_mux[] = { + {OFFSET(mii1_txen), MODE(2)}, /* RGMII1_TCTL */ + {OFFSET(mii1_rxdv), MODE(2) | RXACTIVE}, /* RGMII1_RCTL */ + {OFFSET(mii1_txd3), MODE(2)}, /* RGMII1_TD3 */ + {OFFSET(mii1_txd2), MODE(2)}, /* RGMII1_TD2 */ + {OFFSET(mii1_txd1), MODE(2)}, /* RGMII1_TD1 */ + {OFFSET(mii1_txd0), MODE(2)}, /* RGMII1_TD0 */ + {OFFSET(mii1_txclk), MODE(2)}, /* RGMII1_TCLK */ + {OFFSET(mii1_rxclk), MODE(2) | RXACTIVE}, /* RGMII1_RCLK */ + {OFFSET(mii1_rxd3), MODE(2) | RXACTIVE}, /* RGMII1_RD3 */ + {OFFSET(mii1_rxd2), MODE(2) | RXACTIVE}, /* RGMII1_RD2 */ + {OFFSET(mii1_rxd1), MODE(2) | RXACTIVE}, /* RGMII1_RD1 */ + {OFFSET(mii1_rxd0), MODE(2) | RXACTIVE}, /* RGMII1_RD0 */ + {OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN},/* MDIO_DATA */ + {OFFSET(mdio_clk), MODE(0) | PULLUP_EN}, /* MDIO_CLK */ + {OFFSET(rmii1_refclk), MODE(7) | RXACTIVE}, /* ETH_INT */ + {OFFSET(mii1_col), MODE(7) | PULLUP_EN}, /* PHY_NRESET */ + {OFFSET(xdma_event_intr1), MODE(3)}, + {-1}, +}; + +void enable_uart0_pin_mux(void) +{ + configure_module_pin_mux(uart0_pin_mux); +} + +/* + * Do board-specific muxes. + */ +void enable_board_pin_mux(void) +{ + /* I2C0 */ + configure_module_pin_mux(i2c0_pin_mux); + /* SD Card */ + configure_module_pin_mux(mmc0_pin_mux); + /* Ethernet pinmux. */ + configure_module_pin_mux(rgmii1_pin_mux); +} diff --git a/boards.cfg b/boards.cfg index 983c657..1059342 100644 --- a/boards.cfg +++ b/boards.cfg @@ -257,6 +257,7 @@ Active arm armv7 am33xx BuR tseries Active arm armv7 am33xx BuR tseries tseries_nand tseries:SERIAL1,CONS_INDEX=1,NAND Hannes Petermaier hannes.petermaier@br-automation.com Active arm armv7 am33xx BuR tseries tseries_spi tseries:SERIAL1,CONS_INDEX=1,SPI_BOOT,EMMC_BOOT Hannes Petermaier hannes.petermaier@br-automation.com Active arm armv7 am33xx compulab cm_t335 cm_t335 - Igor Grinberg grinberg@compulab.co.il +Active arm armv7 am33xx gumstix pepper pepper - Ash Charles ash@gumstix.com Active arm armv7 am33xx isee igep0033 am335x_igep0033 - Enric Balletbo i Serra eballetbo@iseebcn.com Active arm armv7 am33xx phytec pcm051 pcm051_rev1 pcm051:REV1 Lars Poeschel poeschel@lemonage.de Active arm armv7 am33xx phytec pcm051 pcm051_rev3 pcm051:REV3 Lars Poeschel poeschel@lemonage.de diff --git a/include/configs/pepper.h b/include/configs/pepper.h new file mode 100644 index 0000000..31c2cf8 --- /dev/null +++ b/include/configs/pepper.h @@ -0,0 +1,100 @@ +/* + * Copyright (C) 2013 Gumstix, Inc. - http://www.gumstix.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __CONFIG_PEPPER_H +#define __CONFIG_PEPPER_H + +#define CONFIG_MMC +#include <configs/ti_am335x_common.h> + +#undef CONFIG_BOARD_LATE_INIT +#undef CONFIG_SPL_OS_BOOT + +/* Clock defines */ +#define V_OSCK 24000000 /* Clock output from T2 */ +#define V_SCLK (V_OSCK) + +#undef CONFIG_SYS_PROMPT +#define CONFIG_SYS_PROMPT "pepper# " + +/* Mach type */ +#define MACH_TYPE_PEPPER 4207 /* Until the next sync */ +#define CONFIG_MACH_TYPE MACH_TYPE_PEPPER + +#define CONFIG_ENV_SIZE (128 << 10) /* 128 KiB */ +#define CONFIG_ENV_IS_NOWHERE +/* Display cpuinfo */ +#define CONFIG_DISPLAY_CPUINFO + +#define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG +#define CONFIG_EXTRA_ENV_SETTINGS \ + "loadaddr=0x80F80000\0" \ + "dtbaddr=0x80200000\0" \ + "bootdir=/boot\0" \ + "bootfile=zImage\0" \ + "dtbfile=am335x-pepper.dtb\0" \ + "console=ttyO0,115200n8\0" \ + "optargs=\0" \ + "mmcdev=0\0" \ + "mmcroot=/dev/mmcblk0p2 rw\0" \ + "mmcrootfstype=ext3 rootwait\0" \ + "mmcargs=setenv bootargs console=${console} " \ + "${optargs} " \ + "root=${mmcroot} " \ + "rootfstype=${mmcrootfstype}\0" \ + "bootenv=uEnv.txt\0" \ + "loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \ + "importbootenv=echo Importing environment from mmc ...; " \ + "env import -t ${loadaddr} ${filesize}\0" \ + "mmcload=load mmc ${mmcdev}:2 ${loadaddr} ${bootdir}/${bootfile}; " \ + "load mmc ${mmcdev}:2 ${dtbaddr} ${bootdir}/${dtbfile}\0" \ + "loaduimage=fatload mmc ${mmcdev}:1 ${loadaddr} uImage\0" \ + "uimageboot=echo Booting from mmc${mmcdev} ...; " \ + "run mmcargs; " \ + "bootm ${loadaddr}\0" \ + "mmcboot=echo Booting from mmc ...; " \ + "run mmcargs; " \ + "bootz ${loadaddr} - ${dtbaddr}\0" \ + "ubiboot=echo Booting from nand (ubifs) ...; " \ + "run ubiargs; run ubiload; " \ + "bootz ${loadaddr} - ${dtbaddr}\0" \ + +#define CONFIG_BOOTCOMMAND \ + "mmc dev ${mmcdev}; if mmc rescan; then " \ + "echo SD/MMC found on device ${mmcdev};" \ + "if run loadbootenv; then " \ + "echo Loaded environment from ${bootenv};" \ + "run importbootenv;" \ + "fi;" \ + "if test -n $uenvcmd; then " \ + "echo Running uenvcmd ...;" \ + "run uenvcmd;" \ + "fi;" \ + "if run mmcload; then " \ + "run mmcboot;" \ + "fi;" \ + "if run loaduimage; then " \ + "run uimageboot;" \ + "fi;" \ + "fi;" \ + +/* Serial console configuration */ +#define CONFIG_CONS_INDEX 1 /* UART0 */ +#define CONFIG_SERIAL1 1 +#define CONFIG_SYS_NS16550_COM1 0x44e09000 + +/* Ethernet support */ +#define CONFIG_PHY_GIGE +#define CONFIG_PHYLIB +#define CONFIG_PHY_ADDR 0 +#define CONFIG_PHY_MICREL +#define CONFIG_PHY_MICREL_KSZ9021 +#define CONFIG_PHY_RESET_DELAY 1000 + +/* SPL */ +#define CONFIG_SPL_LDSCRIPT "$(CPUDIR)/am33xx/u-boot-spl.lds" + +#endif /* __CONFIG_PEPPER_H */