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https://github.com/AsahiLinux/u-boot
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f56348af5d
The purpose of this patch is to prepare for adding the OMAP4 architecture, which is Cortex A9 Cortex A8 and A9 both belong to the armv7 architecture, hence the name change. The two architectures are similar enough that substantial code can be shared. Signed-off-by: Aneesh V <aneesh@ti.com> Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
191 lines
4.7 KiB
C
191 lines
4.7 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 <netdev.h>
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#ifdef CONFIG_STATUS_LED
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#include <status_led.h>
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#endif
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#include <twl4030.h>
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#include <asm/io.h>
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#include <asm/arch/gpio.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 arch/arm/cpu/armv7/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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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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/* Used to track the revision of the board */
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static zoom2_revision revision = ZOOM2_REVISION_UNKNOWN;
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/*
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* Routine: zoom2_get_revision
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* Description: Return the revision of the Zoom2 this code is running on.
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*/
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zoom2_revision zoom2_get_revision(void)
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{
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return revision;
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}
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/*
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* Routine: zoom2_identify
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* Description: Detect which version of Zoom2 we are running on.
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*/
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void zoom2_identify(void)
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{
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/*
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* To check for production board vs beta board,
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* check if gpio 94 is clear.
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*
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* No way yet to check for alpha board identity.
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* Alpha boards were produced in very limited quantities
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* and they are not commonly used. They are mentioned here
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* only for completeness.
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*/
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if (!omap_request_gpio(94)) {
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unsigned int val;
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omap_set_gpio_direction(94, 1);
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val = omap_get_gpio_datain(94);
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omap_free_gpio(94);
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if (val)
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revision = ZOOM2_REVISION_BETA;
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else
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revision = ZOOM2_REVISION_PRODUCTION;
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}
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printf("Board revision ");
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switch (revision) {
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case ZOOM2_REVISION_PRODUCTION:
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printf("Production\n");
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break;
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case ZOOM2_REVISION_BETA:
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printf("Beta\n");
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break;
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default:
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printf("Unknown\n");
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break;
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}
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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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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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enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[3],
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SERIAL_TL16CP754C_BASE, 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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zoom2_identify();
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twl4030_power_init();
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twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
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dieid_num_r();
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/*
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* Board Reset
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* The board is reset by holding the the large button
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* on the top right side of the main board for
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* eight seconds.
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*
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* There are reported problems of some beta boards
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* continously resetting. For those boards, disable resetting.
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*/
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if (ZOOM2_REVISION_PRODUCTION <= zoom2_get_revision())
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twl4030_power_reset_init();
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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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#ifdef CONFIG_CMD_NET
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int board_eth_init(bd_t *bis)
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{
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int rc = 0;
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#ifdef CONFIG_LAN91C96
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rc = lan91c96_initialize(0, CONFIG_LAN91C96_BASE);
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#endif
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return rc;
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}
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#endif
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