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https://github.com/brain-hackers/u-boot-brain
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Zoom2 serial is in general supplied by one of the 4 UARTS on the debug board. The default serial is from the USB connector on left side of the debug board. The USB connector will produce 2 of the 4 UARTS. On your host pick the first enumeration. The details of the setting of the serial gpmc setup are not available. The values were provided by another party. The serial port set up is the same with Zoom1. Baud rate 115200, 8 bit data, no parity, 1 stop bit, no flow. The kernel bootargs are console=ttyS3,115200n8 Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/*
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* Copyright (c) 2009 Wind River Systems, Inc.
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* Derived from Zoom1 code by
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* Nishanth Menon <nm@ti.com>
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* Sunil Kumar <sunilsaini05@gmail.com>
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* Shashi Ranjan <shashiranjanmca05@gmail.com>
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* Richard Woodruff <r-woodruff2@ti.com>
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* Syed Mohammed Khasim <khasim@ti.com>
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*
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/mem.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/mach-types.h>
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#include "zoom2.h"
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#include "zoom2_serial.h"
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/*
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* This the the zoom2, board specific, gpmc configuration for the
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* quad uart on the debug board. The more general gpmc configurations
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* are setup at the cpu level in cpu/arm_cortexa8/omap3/mem.c
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*
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* The details of the setting of the serial gpmc setup are not available.
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* The values were provided by another party.
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*/
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extern void enable_gpmc_config(u32 *gpmc_config, gpmc_csx_t *gpmc_cs_base,
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u32 base, u32 size);
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static u32 gpmc_serial_TL16CP754C[GPMC_MAX_REG] = {
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0x00011000,
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0x001F1F01,
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0x00080803,
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0x1D091D09,
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0x041D1F1F,
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0x1D0904C4, 0
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};
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/*
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* Routine: board_init
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* Description: Early hardware init.
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*/
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int board_init (void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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gpmc_csx_t *serial_cs_base;
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u32 *gpmc_config;
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gpmc_init (); /* in SRAM or SDRAM, finish GPMC */
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/* Configure console support on zoom2 */
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gpmc_config = gpmc_serial_TL16CP754C;
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serial_cs_base = (gpmc_csx_t *) (GPMC_CONFIG_CS0_BASE +
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(3 * GPMC_CONFIG_WIDTH));
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enable_gpmc_config(gpmc_config,
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serial_cs_base,
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SERIAL_TL16CP754C_BASE,
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GPMC_SIZE_16M);
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/* board id for Linux */
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gd->bd->bi_arch_number = MACH_TYPE_OMAP_ZOOM2;
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/* boot param addr */
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gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
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#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
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status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
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#endif
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return 0;
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}
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/*
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* Routine: misc_init_r
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* Description: Configure zoom board specific configurations
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*/
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int misc_init_r (void)
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{
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power_init_r ();
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dieid_num_r ();
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return 0;
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}
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/*
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* Routine: set_muxconf_regs
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* Description: Setting up the configuration Mux registers specific to the
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* hardware. Many pins need to be moved from protect to primary
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* mode.
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*/
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void set_muxconf_regs (void)
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{
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/* platform specific muxes */
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MUX_ZOOM2 ();
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}
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