[U-Boot] [PATCH] am335x: pepper: Add Gumstix Pepper AM335x-based machine
Ash Charles
ashcharles at gmail.com
Tue Apr 29 20:05:35 CEST 2014
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 at gumstix.com>
Cc: Tom Rini <trini at 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 at br-automation.com>
Active arm armv7 am33xx BuR tseries tseries_spi tseries:SERIAL1,CONS_INDEX=1,SPI_BOOT,EMMC_BOOT Hannes Petermaier <hannes.petermaier at br-automation.com>
Active arm armv7 am33xx compulab cm_t335 cm_t335 - Igor Grinberg <grinberg at compulab.co.il>
+Active arm armv7 am33xx gumstix pepper pepper - Ash Charles <ash at gumstix.com>
Active arm armv7 am33xx isee igep0033 am335x_igep0033 - Enric Balletbo i Serra <eballetbo at iseebcn.com>
Active arm armv7 am33xx phytec pcm051 pcm051_rev1 pcm051:REV1 Lars Poeschel <poeschel at lemonage.de>
Active arm armv7 am33xx phytec pcm051 pcm051_rev3 pcm051:REV3 Lars Poeschel <poeschel at 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 */
--
1.8.3.2
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