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upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/logicpd/omap3som/omap3logic.c

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/*
* (C) Copyright 2011
* Logic Product Development <www.logicpd.com>
*
* Author :
* Peter Barada <peter.barada@logicpd.com>
*
* Derived from Beagle Board and 3430 SDP code by
* Richard Woodruff <r-woodruff2@ti.com>
* Syed Mohammed Khasim <khasim@ti.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <netdev.h>
#include <flash.h>
#include <nand.h>
#include <i2c.h>
#include <twl4030.h>
#include <asm/io.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/mux.h>
#include <asm/arch/mem.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-types.h>
#include "omap3logic.h"
DECLARE_GLOBAL_DATA_PTR;
/*
* two dimensional array of strucures containining board name and Linux
* machine IDs; row it selected based on CPU column is slected based
* on hsusb0_data5 pin having a pulldown resistor
*/
static struct board_id {
char *name;
int machine_id;
} boards[2][2] = {
{
{
.name = "OMAP35xx SOM LV",
.machine_id = MACH_TYPE_OMAP3530_LV_SOM,
},
{
.name = "OMAP35xx Torpedo",
.machine_id = MACH_TYPE_OMAP3_TORPEDO,
},
},
{
{
.name = "DM37xx SOM LV",
.machine_id = MACH_TYPE_DM3730_SOM_LV,
},
{
.name = "DM37xx Torpedo",
.machine_id = MACH_TYPE_DM3730_TORPEDO,
},
},
};
/*
* BOARD_ID_GPIO - GPIO of pin with optional pulldown resistor on SOM LV
*/
#define BOARD_ID_GPIO 189 /* hsusb0_data5 pin */
/*
* Routine: board_init
* Description: Early hardware init.
*/
int board_init(void)
{
struct board_id *board;
unsigned int val;
gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
/* boot param addr */
gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
/*
* To identify between a SOM LV and Torpedo module,
* a pulldown resistor is on hsusb0_data5 for the SOM LV module.
* Drive the pin (and let it soak), then read it back.
* If the pin is still high its a Torpedo. If low its a SOM LV
*/
/* Mux hsusb0_data5 as a GPIO */
MUX_VAL(CP(HSUSB0_DATA5), (IEN | PTD | DIS | M4));
if (gpio_request(BOARD_ID_GPIO, "husb0_data5.gpio_189") == 0) {
/*
* Drive BOARD_ID_GPIO - the pulldown resistor on the SOM LV
* will drain the voltage.
*/
gpio_direction_output(BOARD_ID_GPIO, 0);
gpio_set_value(BOARD_ID_GPIO, 1);
/* Let it soak for a bit */
sdelay(0x100);
/*
* Read state of BOARD_ID_GPIO as an input and if its set.
* If so the board is a Torpedo
*/
gpio_direction_input(BOARD_ID_GPIO);
val = gpio_get_value(BOARD_ID_GPIO);
gpio_free(BOARD_ID_GPIO);
board = &boards[!!(get_cpu_family() == CPU_OMAP36XX)][!!val];
printf("Board: %s\n", board->name);
/* Set the machine_id passed to Linux */
gd->bd->bi_arch_number = board->machine_id;
}
/* restore hsusb0_data5 pin as hsusb0_data5 */
MUX_VAL(CP(HSUSB0_DATA5), (IEN | PTD | DIS | M0));
return 0;
}
#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
int board_mmc_init(bd_t *bis)
{
return omap_mmc_init(0, 0, 0);
}
#endif
#ifdef CONFIG_SMC911X
/* GPMC CS1 settings for Logic SOM LV/Torpedo LAN92xx Ethernet chip */
static const u32 gpmc_lan92xx_config[] = {
NET_LAN92XX_GPMC_CONFIG1,
NET_LAN92XX_GPMC_CONFIG2,
NET_LAN92XX_GPMC_CONFIG3,
NET_LAN92XX_GPMC_CONFIG4,
NET_LAN92XX_GPMC_CONFIG5,
NET_LAN92XX_GPMC_CONFIG6,
};
int board_eth_init(bd_t *bis)
{
enable_gpmc_cs_config(gpmc_lan92xx_config, &gpmc_cfg->cs[1],
CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
return smc911x_initialize(0, CONFIG_SMC911X_BASE);
}
#endif
/*
* IEN - Input Enable
* IDIS - Input Disable
* PTD - Pull type Down
* PTU - Pull type Up
* DIS - Pull type selection is inactive
* EN - Pull type selection is active
* M0 - Mode 0
* The commented string gives the final mux configuration for that pin
*/
/*
* Routine: set_muxconf_regs
* Description: Setting up the configuration Mux registers specific to the
* hardware. Many pins need to be moved from protect to primary
* mode.
*/
void set_muxconf_regs(void)
{
/*GPMC*/
MUX_VAL(CP(GPMC_A1), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A2), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A3), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A4), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A5), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A6), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A7), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A8), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A9), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_A10), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_D0), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D1), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D2), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D3), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D4), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D5), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D6), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D7), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D8), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D9), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D10), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D11), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D12), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D13), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D14), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_D15), (IEN | PTU | EN | M0));
MUX_VAL(CP(GPMC_NCS0), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_NCS1), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_NCS2), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_NCS3), (IDIS | PTD | DIS | M0));
MUX_VAL(CP(GPMC_NCS5), (IDIS | PTU | DIS | M4));
MUX_VAL(CP(GPMC_NCS7), (IDIS | PTD | DIS | M1)); /*GPMC_IO_DIR*/
MUX_VAL(CP(GPMC_NBE0_CLE), (IDIS | PTU | EN | M0));
MUX_VAL(CP(GPMC_WAIT1), (IEN | PTU | EN | M0));
/*Expansion card */
MUX_VAL(CP(MMC1_CLK), (IDIS | PTU | EN | M0));
MUX_VAL(CP(MMC1_CMD), (IEN | PTU | EN | M0));
MUX_VAL(CP(MMC1_DAT0), (IEN | PTU | EN | M0));
MUX_VAL(CP(MMC1_DAT1), (IEN | PTU | EN | M0));
MUX_VAL(CP(MMC1_DAT2), (IEN | PTU | EN | M0));
MUX_VAL(CP(MMC1_DAT3), (IEN | PTU | EN | M0));
/* Serial Console */
MUX_VAL(CP(UART1_TX), (IDIS | PTD | DIS | M0));
MUX_VAL(CP(UART1_RTS), (IDIS | PTD | DIS | M0));
MUX_VAL(CP(UART1_CTS), (IEN | PTU | DIS | M0));
MUX_VAL(CP(UART1_RX), (IEN | PTD | DIS | M0));
/* I2C */
MUX_VAL(CP(I2C2_SCL), (IEN | PTU | EN | M0));
MUX_VAL(CP(I2C2_SDA), (IEN | PTU | EN | M0));
MUX_VAL(CP(I2C3_SCL), (IEN | PTU | EN | M0));
MUX_VAL(CP(I2C3_SDA), (IEN | PTU | EN | M0));
MUX_VAL(CP(HDQ_SIO), (IEN | PTU | EN | M0));
/*Control and debug */
MUX_VAL(CP(SYS_NIRQ), (IEN | PTU | EN | M0));
MUX_VAL(CP(SYS_OFF_MODE), (IEN | PTD | DIS | M0));
MUX_VAL(CP(SYS_CLKOUT1), (IEN | PTD | DIS | M0));
MUX_VAL(CP(SYS_CLKOUT2), (IEN | PTU | EN | M0));
MUX_VAL(CP(JTAG_nTRST), (IEN | PTD | DIS | M0));
MUX_VAL(CP(SDRC_CKE0), (IDIS | PTU | EN | M0));
}