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uboot-1.1.4-kirkwood/board/omap730p2/omap730p2.c
Olaf Rempel f69754bccc u-boot 1.1.4
2024-01-07 23:57:24 +01:00

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7.2 KiB
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/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2002
* David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
*
* (C) Copyright 2003
* Texas Instruments, <www.ti.com>
* Kshitij Gupta <Kshitij@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>
#if defined(CONFIG_OMAP730)
#include <./configs/omap730.h>
#endif
int test_boot_mode(void);
void spin_up_leds(void);
void flash__init (void);
void ether__init (void);
void set_muxconf_regs (void);
void peripheral_power_enable (void);
#define FLASH_ON_CS0 1
#define FLASH_ON_CS3 0
static inline void delay (unsigned long loops)
{
__asm__ volatile ("1:\n"
"subs %0, %1, #1\n"
"bne 1b":"=r" (loops):"0" (loops));
}
int test_boot_mode(void)
{
/* Check for CS0 and CS3 address decode swapping */
if (*((volatile int *)EMIFS_CONFIG) & 0x00000002)
return(FLASH_ON_CS3);
else
return(FLASH_ON_CS0);
}
/* Toggle backup LED indication */
void toggle_backup_led(void)
{
static int backupLEDState = 0; /* Init variable so that the LED will be ON the first time */
volatile unsigned int *IOConfReg;
IOConfReg = (volatile unsigned int *) ((unsigned int) OMAP730_GPIO_BASE_5 + GPIO_DATA_OUTPUT);
if (backupLEDState != 0) {
*IOConfReg &= (0xFFFFEFFF);
backupLEDState = 0;
} else {
*IOConfReg |= (0x00001000);
backupLEDState = 1;
}
}
/*
* Miscellaneous platform dependent initialisations
*/
int board_init (void)
{
DECLARE_GLOBAL_DATA_PTR;
/* arch number of OMAP 730 P2 Board - Same as the Innovator! */
gd->bd->bi_arch_number = MACH_TYPE_OMAP_PERSEUS2;
/* adress of boot parameters */
gd->bd->bi_boot_params = 0x10000100;
/* Configure MUX settings */
set_muxconf_regs ();
peripheral_power_enable ();
/* Backup LED indication via GPIO_140 -> Red led if MUX correctly setup */
toggle_backup_led();
/* Hold GSM in reset until needed */
*((volatile unsigned short *)M_CTL) &= ~1;
/*
* CSx timings, GPIO Mux ... setup
*/
/* Flash: CS0 timings setup */
*((volatile unsigned int *) FLASH_CFG_0) = 0x0000fff3;
*((volatile unsigned int *) FLASH_ACFG_0_1) = 0x00000088;
/* Ethernet support trough the debug board */
/* CS1 timings setup */
*((volatile unsigned int *) FLASH_CFG_1) = 0x0000fff3;
*((volatile unsigned int *) FLASH_ACFG_0_1) = 0x00000000;
/* this speeds up your boot a quite a bit. However to make it
* work, you need make sure your kernel startup flush bug is fixed.
* ... rkw ...
*/
icache_enable ();
flash__init ();
ether__init ();
return 0;
}
int misc_init_r (void)
{
/* currently empty */
return (0);
}
/******************************
Routine:
Description:
******************************/
void flash__init (void)
{
unsigned int regval;
regval = *((volatile unsigned int *) EMIFS_CONFIG);
/* Turn off write protection for flash devices. */
regval = regval | 0x0001;
*((volatile unsigned int *) EMIFS_CONFIG) = regval;
}
/*************************************************************
Routine:ether__init
Description: take the Ethernet controller out of reset and wait
for the EEPROM load to complete.
*************************************************************/
void ether__init (void)
{
#define LAN_RESET_REGISTER 0x0400001c
*((volatile unsigned short *) LAN_RESET_REGISTER) = 0x0000;
do {
*((volatile unsigned short *) LAN_RESET_REGISTER) = 0x0001;
udelay (100);
} while (*((volatile unsigned short *) LAN_RESET_REGISTER) != 0x0001);
do {
*((volatile unsigned short *) LAN_RESET_REGISTER) = 0x0000;
udelay (100);
} while (*((volatile unsigned short *) LAN_RESET_REGISTER) != 0x0000);
#define ETH_CONTROL_REG 0x0400030b
*((volatile unsigned char *) ETH_CONTROL_REG) &= ~0x01;
udelay (100);
}
/******************************
Routine:
Description:
******************************/
int dram_init (void)
{
DECLARE_GLOBAL_DATA_PTR;
gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
return 0;
}
/******************************************************
Routine: set_muxconf_regs
Description: Setting up the configuration Mux registers
specific to the hardware
*******************************************************/
void set_muxconf_regs (void)
{
volatile unsigned int *MuxConfReg;
/* set each registers to its reset value; */
/*
* Backup LED Indication
*/
/* Configure MUXed pin. Mode 6: GPIO_140 */
MuxConfReg = (volatile unsigned int *) (PERSEUS2_IO_CONF10);
*MuxConfReg &= (0xFFFFFF1F); /* Clear D_MPU_LPG1 */
*MuxConfReg |= 0x000000C0; /* Set D_MPU_LPG1 to 0x6 */
/* Configure GPIO_140 as output */
MuxConfReg = (volatile unsigned int *) ((unsigned int) OMAP730_GPIO_BASE_5 + GPIO_DIRECTION_CONTROL);
*MuxConfReg &= (0xFFFFEFFF); /* Clear direction (output) for GPIO 140 */
/*
* Configure GPIOs for battery charge & feedback
*/
/* Configure MUXed pin. Mode 6: GPIO_35 */
MuxConfReg = (volatile unsigned int *) (PERSEUS2_IO_CONF3);
*MuxConfReg &= 0xFFFFFFF1; /* Clear M_CLK_OUT */
*MuxConfReg |= 0x0000000C; /* Set M_CLK_OUT = 0x6 (GPIOs) */
/* Configure MUXed pin. Mode 6: GPIO_72,73,74 */
MuxConfReg = (volatile unsigned int *) (PERSEUS2_IO_CONF5);
*MuxConfReg &= 0xFFFF1FFF; /* Clear D_DDR */
*MuxConfReg |= 0x0000C000; /* Set D_DDR = 0x6 (GPIOs) */
MuxConfReg = (volatile unsigned int *) ((unsigned int) OMAP730_GPIO_BASE_3 + GPIO_DIRECTION_CONTROL);
*MuxConfReg |= 0x00000100; /* Configure GPIO_72 as input */
*MuxConfReg &= 0xFFFFFDFF; /* Configure GPIO_73 as output */
/*
* Allow battery charge
*/
MuxConfReg = (volatile unsigned int *) ((unsigned int) OMAP730_GPIO_BASE_3 + GPIO_DATA_OUTPUT);
*MuxConfReg &= (0xFFFFFDFF); /* Clear GPIO_73 pin */
/*
* Configure MPU_EXT_NIRQ IO in IO_CONF9 register,
* It is used as the Ethernet controller interrupt
*/
MuxConfReg = (volatile unsigned int *) (PERSEUS2_IO_CONF9);
*MuxConfReg &= 0x1FFFFFFF;
}
/******************************************************
Routine: peripheral_power_enable
Description: Enable the power for UART1
*******************************************************/
void peripheral_power_enable (void)
{
volatile unsigned int *MuxConfReg;
/* Set up pins used by UART */
/* Start UART clock (48MHz) */
MuxConfReg = (volatile unsigned int *) (PERSEUS_PCC_CONF_REG);
*MuxConfReg &= (0xFFFFFFF7);
*MuxConfReg |= (0x00000008);
/* Get the UART pin in mode0 */
MuxConfReg = (volatile unsigned int *) (PERSEUS2_IO_CONF3);
*MuxConfReg &= (0xFF1FFFFF);
*MuxConfReg &= (0xF1FFFFFF);
}
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