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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597 lines
16 KiB
597 lines
16 KiB
/*
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* (C) Copyright 2004-2011
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* Texas Instruments, <www.ti.com>
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*
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* Author :
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* Sunil Kumar <sunilsaini05@gmail.com>
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* Shashi Ranjan <shashiranjanmca05@gmail.com>
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*
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* Derived from Beagle Board and 3430 SDP code by
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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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#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 <linux/mtd/nand.h>
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#include <asm/io.h>
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#include <asm/arch/mmc_host_def.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/mem.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/gpio.h>
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#include <asm/mach-types.h>
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#ifdef CONFIG_USB_EHCI
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#include <usb.h>
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#include <asm/arch/clocks.h>
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#include <asm/arch/clocks_omap3.h>
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#include <asm/arch/ehci_omap3.h>
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/* from drivers/usb/host/ehci-core.h */
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extern struct ehci_hccr *hccr;
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extern volatile struct ehci_hcor *hcor;
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#endif
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#include "beagle.h"
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#include <command.h>
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#define pr_debug(fmt, args...) debug(fmt, ##args)
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#define TWL4030_I2C_BUS 0
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#define EXPANSION_EEPROM_I2C_BUS 1
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#define EXPANSION_EEPROM_I2C_ADDRESS 0x50
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#define TINCANTOOLS_ZIPPY 0x01000100
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#define TINCANTOOLS_ZIPPY2 0x02000100
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#define TINCANTOOLS_TRAINER 0x04000100
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#define TINCANTOOLS_SHOWDOG 0x03000100
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#define KBADC_BEAGLEFPGA 0x01000600
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#define LW_BEAGLETOUCH 0x01000700
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#define BRAINMUX_LCDOG 0x01000800
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#define BRAINMUX_LCDOGTOUCH 0x02000800
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#define BBTOYS_WIFI 0x01000B00
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#define BBTOYS_VGA 0x02000B00
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#define BBTOYS_LCD 0x03000B00
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#define BEAGLE_NO_EEPROM 0xffffffff
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DECLARE_GLOBAL_DATA_PTR;
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static struct {
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unsigned int device_vendor;
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unsigned char revision;
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unsigned char content;
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char fab_revision[8];
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char env_var[16];
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char env_setting[64];
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} expansion_config;
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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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gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
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/* board id for Linux */
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gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
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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: get_board_revision
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* Description: Detect if we are running on a Beagle revision Ax/Bx,
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* C1/2/3, C4 or xM. This can be done by reading
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* the level of GPIO173, GPIO172 and GPIO171. This should
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* result in
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* GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
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* GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
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* GPIO173, GPIO172, GPIO171: 1 0 1 => C4
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* GPIO173, GPIO172, GPIO171: 0 0 0 => xM
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*/
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int get_board_revision(void)
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{
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int revision;
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if (!gpio_request(171, "") &&
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!gpio_request(172, "") &&
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!gpio_request(173, "")) {
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gpio_direction_input(171);
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gpio_direction_input(172);
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gpio_direction_input(173);
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revision = gpio_get_value(173) << 2 |
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gpio_get_value(172) << 1 |
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gpio_get_value(171);
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} else {
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printf("Error: unable to acquire board revision GPIOs\n");
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revision = -1;
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}
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return revision;
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}
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#ifdef CONFIG_SPL_BUILD
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/*
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* Routine: get_board_mem_timings
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* Description: If we use SPL then there is no x-loader nor config header
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* so we have to setup the DDR timings ourself on both banks.
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*/
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void get_board_mem_timings(u32 *mcfg, u32 *ctrla, u32 *ctrlb, u32 *rfr_ctrl,
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u32 *mr)
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{
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int pop_mfr, pop_id;
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/*
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* We need to identify what PoP memory is on the board so that
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* we know what timings to use. If we can't identify it then
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* we know it's an xM. To map the ID values please see nand_ids.c
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*/
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identify_nand_chip(&pop_mfr, &pop_id);
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*mr = MICRON_V_MR_165;
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switch (get_board_revision()) {
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case REVISION_C4:
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if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
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/* 512MB DDR */
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*mcfg = NUMONYX_V_MCFG_165(512 << 20);
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*ctrla = NUMONYX_V_ACTIMA_165;
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*ctrlb = NUMONYX_V_ACTIMB_165;
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*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
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break;
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} else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
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/* Beagleboard Rev C5, 256MB DDR */
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*mcfg = MICRON_V_MCFG_200(256 << 20);
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*ctrla = MICRON_V_ACTIMA_200;
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*ctrlb = MICRON_V_ACTIMB_200;
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*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
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break;
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}
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case REVISION_XM_A:
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case REVISION_XM_B:
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case REVISION_XM_C:
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if (pop_mfr == 0) {
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/* 256MB DDR */
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*mcfg = MICRON_V_MCFG_200(256 << 20);
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*ctrla = MICRON_V_ACTIMA_200;
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*ctrlb = MICRON_V_ACTIMB_200;
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*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
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} else {
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/* 512MB DDR */
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*mcfg = NUMONYX_V_MCFG_165(512 << 20);
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*ctrla = NUMONYX_V_ACTIMA_165;
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*ctrlb = NUMONYX_V_ACTIMB_165;
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*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
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}
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break;
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default:
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/* Assume 128MB and Micron/165MHz timings to be safe */
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*mcfg = MICRON_V_MCFG_165(128 << 20);
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*ctrla = MICRON_V_ACTIMA_165;
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*ctrlb = MICRON_V_ACTIMB_165;
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*rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
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}
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}
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#endif
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/*
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* Routine: get_expansion_id
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* Description: This function checks for expansion board by checking I2C
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* bus 1 for the availability of an AT24C01B serial EEPROM.
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* returns the device_vendor field from the EEPROM
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*/
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unsigned int get_expansion_id(void)
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{
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i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
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/* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
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if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
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i2c_set_bus_num(TWL4030_I2C_BUS);
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return BEAGLE_NO_EEPROM;
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}
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/* read configuration data */
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i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
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sizeof(expansion_config));
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i2c_set_bus_num(TWL4030_I2C_BUS);
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return expansion_config.device_vendor;
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}
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/*
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* Configure DSS to display background color on DVID
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* Configure VENC to display color bar on S-Video
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*/
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void beagle_display_init(void)
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{
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omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
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switch (get_board_revision()) {
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case REVISION_AXBX:
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case REVISION_CX:
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case REVISION_C4:
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omap3_dss_panel_config(&dvid_cfg);
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break;
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case REVISION_XM_A:
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case REVISION_XM_B:
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case REVISION_XM_C:
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default:
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omap3_dss_panel_config(&dvid_cfg_xm);
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break;
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}
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}
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/*
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* Routine: misc_init_r
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* Description: Configure board specific parts
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*/
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int misc_init_r(void)
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{
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struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
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struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
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struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
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/* Enable i2c2 pullup resisters */
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writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
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switch (get_board_revision()) {
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case REVISION_AXBX:
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printf("Beagle Rev Ax/Bx\n");
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setenv("beaglerev", "AxBx");
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break;
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case REVISION_CX:
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printf("Beagle Rev C1/C2/C3\n");
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setenv("beaglerev", "Cx");
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MUX_BEAGLE_C();
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break;
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case REVISION_C4:
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printf("Beagle Rev C4\n");
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setenv("beaglerev", "C4");
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MUX_BEAGLE_C();
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/* Set VAUX2 to 1.8V for EHCI PHY */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
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TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
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TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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break;
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case REVISION_XM_A:
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printf("Beagle xM Rev A\n");
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setenv("beaglerev", "xMA");
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MUX_BEAGLE_XM();
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/* Set VAUX2 to 1.8V for EHCI PHY */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
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TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
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TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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break;
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case REVISION_XM_B:
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printf("Beagle xM Rev B\n");
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setenv("beaglerev", "xMB");
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MUX_BEAGLE_XM();
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/* Set VAUX2 to 1.8V for EHCI PHY */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
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TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
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TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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break;
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case REVISION_XM_C:
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printf("Beagle xM Rev C\n");
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setenv("beaglerev", "xMC");
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MUX_BEAGLE_XM();
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/* Set VAUX2 to 1.8V for EHCI PHY */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
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TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
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TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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break;
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default:
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printf("Beagle unknown 0x%02x\n", get_board_revision());
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MUX_BEAGLE_XM();
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/* Set VAUX2 to 1.8V for EHCI PHY */
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twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
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TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
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TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
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TWL4030_PM_RECEIVER_DEV_GRP_P1);
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}
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switch (get_expansion_id()) {
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case TINCANTOOLS_ZIPPY:
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printf("Recognized Tincantools Zippy board (rev %d %s)\n",
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expansion_config.revision,
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expansion_config.fab_revision);
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MUX_TINCANTOOLS_ZIPPY();
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setenv("buddy", "zippy");
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break;
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case TINCANTOOLS_ZIPPY2:
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printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
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expansion_config.revision,
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expansion_config.fab_revision);
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MUX_TINCANTOOLS_ZIPPY();
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setenv("buddy", "zippy2");
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break;
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case TINCANTOOLS_TRAINER:
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printf("Recognized Tincantools Trainer board (rev %d %s)\n",
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expansion_config.revision,
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expansion_config.fab_revision);
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MUX_TINCANTOOLS_ZIPPY();
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MUX_TINCANTOOLS_TRAINER();
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setenv("buddy", "trainer");
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break;
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case TINCANTOOLS_SHOWDOG:
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printf("Recognized Tincantools Showdow board (rev %d %s)\n",
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expansion_config.revision,
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expansion_config.fab_revision);
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/* Place holder for DSS2 definition for showdog lcd */
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setenv("defaultdisplay", "showdoglcd");
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setenv("buddy", "showdog");
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break;
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case KBADC_BEAGLEFPGA:
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printf("Recognized KBADC Beagle FPGA board\n");
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MUX_KBADC_BEAGLEFPGA();
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setenv("buddy", "beaglefpga");
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break;
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case LW_BEAGLETOUCH:
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printf("Recognized Liquidware BeagleTouch board\n");
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setenv("buddy", "beagletouch");
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break;
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case BRAINMUX_LCDOG:
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printf("Recognized Brainmux LCDog board\n");
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setenv("buddy", "lcdog");
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break;
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case BRAINMUX_LCDOGTOUCH:
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printf("Recognized Brainmux LCDog Touch board\n");
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setenv("buddy", "lcdogtouch");
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break;
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case BBTOYS_WIFI:
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printf("Recognized BeagleBoardToys WiFi board\n");
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MUX_BBTOYS_WIFI()
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setenv("buddy", "bbtoys-wifi");
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break;;
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case BBTOYS_VGA:
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printf("Recognized BeagleBoardToys VGA board\n");
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break;;
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case BBTOYS_LCD:
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printf("Recognized BeagleBoardToys LCD board\n");
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break;;
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case BEAGLE_NO_EEPROM:
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printf("No EEPROM on expansion board\n");
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setenv("buddy", "none");
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break;
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default:
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printf("Unrecognized expansion board: %x\n",
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expansion_config.device_vendor);
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setenv("buddy", "unknown");
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}
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if (expansion_config.content == 1)
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setenv(expansion_config.env_var, expansion_config.env_setting);
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twl4030_power_init();
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switch (get_board_revision()) {
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case REVISION_XM_A:
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case REVISION_XM_B:
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twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
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break;
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default:
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twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
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break;
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}
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/* Set GPIO states before they are made outputs */
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writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
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&gpio6_base->setdataout);
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writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
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GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
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|
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/* Configure GPIOs to output */
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writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
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writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
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GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
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dieid_num_r();
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beagle_display_init();
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omap3_dss_enable();
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return 0;
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}
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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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MUX_BEAGLE();
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}
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#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
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int board_mmc_init(bd_t *bis)
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{
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omap_mmc_init(0);
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return 0;
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}
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#endif
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#ifdef CONFIG_USB_EHCI
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|
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#define GPIO_PHY_RESET 147
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|
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/* Reset is needed otherwise the kernel-driver will throw an error. */
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int ehci_hcd_stop(void)
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{
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|
pr_debug("Resetting OMAP3 EHCI\n");
|
|
gpio_set_value(GPIO_PHY_RESET, 0);
|
|
writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
|
|
/* disable USB clocks */
|
|
struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
|
|
sr32(&prcm_base->iclken_usbhost, 0, 1, 0);
|
|
sr32(&prcm_base->fclken_usbhost, 0, 2, 0);
|
|
sr32(&prcm_base->iclken3_core, 2, 1, 0);
|
|
sr32(&prcm_base->fclken3_core, 2, 1, 0);
|
|
return 0;
|
|
}
|
|
|
|
/* Call usb_stop() before starting the kernel */
|
|
void show_boot_progress(int val)
|
|
{
|
|
if(val == 15)
|
|
usb_stop();
|
|
}
|
|
|
|
/*
|
|
* Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard.
|
|
* Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37.
|
|
* See there for additional Copyrights.
|
|
*/
|
|
int ehci_hcd_init(void)
|
|
{
|
|
pr_debug("Initializing OMAP3 ECHI\n");
|
|
|
|
/* Put the PHY in RESET */
|
|
gpio_request(GPIO_PHY_RESET, "");
|
|
gpio_direction_output(GPIO_PHY_RESET, 0);
|
|
gpio_set_value(GPIO_PHY_RESET, 0);
|
|
|
|
/* Hold the PHY in RESET for enough time till DIR is high */
|
|
/* Refer: ISSUE1 */
|
|
udelay(10);
|
|
|
|
struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
|
|
/* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */
|
|
sr32(&prcm_base->iclken_usbhost, 0, 1, 1);
|
|
/*
|
|
* Enable USBHOST_48M_FCLK (USBHOST_FCLK1)
|
|
* and USBHOST_120M_FCLK (USBHOST_FCLK2)
|
|
*/
|
|
sr32(&prcm_base->fclken_usbhost, 0, 2, 3);
|
|
/* Enable USBTTL_ICLK */
|
|
sr32(&prcm_base->iclken3_core, 2, 1, 1);
|
|
/* Enable USBTTL_FCLK */
|
|
sr32(&prcm_base->fclken3_core, 2, 1, 1);
|
|
pr_debug("USB clocks enabled\n");
|
|
|
|
/* perform TLL soft reset, and wait until reset is complete */
|
|
writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET,
|
|
OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
|
|
/* Wait for TLL reset to complete */
|
|
while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS)
|
|
& OMAP_USBTLL_SYSSTATUS_RESETDONE));
|
|
pr_debug("TLL reset done\n");
|
|
|
|
writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
|
|
OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
|
|
OMAP_USBTLL_SYSCONFIG_CACTIVITY,
|
|
OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG);
|
|
|
|
/* Put UHH in NoIdle/NoStandby mode */
|
|
writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP
|
|
| OMAP_UHH_SYSCONFIG_SIDLEMODE
|
|
| OMAP_UHH_SYSCONFIG_CACTIVITY
|
|
| OMAP_UHH_SYSCONFIG_MIDLEMODE,
|
|
OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
|
|
|
|
/* setup burst configurations */
|
|
writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
|
|
| OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
|
|
| OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN,
|
|
OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG);
|
|
|
|
/*
|
|
* Refer ISSUE1:
|
|
* Hold the PHY in RESET for enough time till
|
|
* PHY is settled and ready
|
|
*/
|
|
udelay(10);
|
|
gpio_set_value(GPIO_PHY_RESET, 1);
|
|
|
|
hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE);
|
|
hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10);
|
|
|
|
pr_debug("OMAP3 EHCI init done\n");
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_USB_EHCI */
|
|
|
|
#ifndef CONFIG_SPL_BUILD
|
|
/*
|
|
* This command returns the status of the user button on beagle xM
|
|
* Input - none
|
|
* Returns - 1 if button is held down
|
|
* 0 if button is not held down
|
|
*/
|
|
int do_userbutton(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
int button = 0;
|
|
int gpio;
|
|
|
|
/*
|
|
* pass address parameter as argv[0] (aka command name),
|
|
* and all remaining args
|
|
*/
|
|
switch (get_board_revision()) {
|
|
case REVISION_AXBX:
|
|
case REVISION_CX:
|
|
case REVISION_C4:
|
|
gpio = 7;
|
|
break;
|
|
case REVISION_XM_A:
|
|
case REVISION_XM_B:
|
|
case REVISION_XM_C:
|
|
default:
|
|
gpio = 4;
|
|
break;
|
|
}
|
|
gpio_request(gpio, "");
|
|
gpio_direction_input(gpio);
|
|
printf("The user button is currently ");
|
|
if (gpio_get_value(gpio))
|
|
{
|
|
button = 1;
|
|
printf("PRESSED.\n");
|
|
}
|
|
else
|
|
{
|
|
button = 0;
|
|
printf("NOT pressed.\n");
|
|
}
|
|
|
|
return !button;
|
|
}
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
|
|
U_BOOT_CMD(
|
|
userbutton, CONFIG_SYS_MAXARGS, 1, do_userbutton,
|
|
"Return the status of the BeagleBoard USER button",
|
|
""
|
|
);
|
|
#endif
|
|
|