/* * (C) Copyright 2002 * Robert Schwebel, Pengutronix, r.schwebel@pengutronix.de * Kyle Harris, Nexus Technologies, Inc., kharris@nexus-tech.net * Marius Groeger, Sysgo Real-Time Solutions GmbH, mgroeger@sysgo.de * * 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 <asm/arch/pxa-regs.h> #include <asm/mach-types.h> DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_SHOW_BOOT_PROGRESS # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) #else # define SHOW_BOOT_PROGRESS(arg) #endif /** * i2c_init_board - reset i2c bus. When the board is powercycled during a * bus transfer it might hang; for details see doc/I2C_Edge_Conditions. * The Innokom board has GPIO70 connected to SCLK which can be toggled * until all chips think that their current cycles are finished. */ int i2c_init_board(void) { int i, icr; /* disable I2C controller first, otherwhise it thinks we want to */ /* talk to the slave port... */ icr = ICR; ICR &= ~(ICR_SCLE | ICR_IUE); /* set gpio pin low _before_ we change direction to output */ GPCR(70) = GPIO_bit(70); /* now toggle between output=low and high-impedance */ for (i = 0; i < 20; i++) { GPDR(70) |= GPIO_bit(70); /* output */ udelay(10); GPDR(70) &= ~GPIO_bit(70); /* input */ udelay(10); } ICR = icr; return 0; } /** * misc_init_r: - misc initialisation routines */ int misc_init_r(void) { char *str; /* determine if the software update key is pressed during startup */ if (GPLR0 & 0x00000800) { printf("using bootcmd_normal (sw-update button not pressed)\n"); str = getenv("bootcmd_normal"); } else { printf("using bootcmd_update (sw-update button pressed)\n"); str = getenv("bootcmd_update"); } setenv("bootcmd",str); return 0; } /** * board_init: - setup some data structures * * @return: 0 in case of success */ int board_init (void) { /* memory and cpu-speed are setup before relocation */ /* so we do _nothing_ here */ gd->bd->bi_arch_number = MACH_TYPE_INNOKOM; gd->bd->bi_boot_params = 0xa0000100; gd->bd->bi_baudrate = CONFIG_BAUDRATE; return 0; } /** * dram_init: - setup dynamic RAM * * @return: 0 in case of success */ int dram_init (void) { gd->bd->bi_dram[0].start = PHYS_SDRAM_1; gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; return 0; } /** * innokom_set_led: - switch LEDs on or off * * @param led: LED to switch (0,1,2) * @param state: switch on (1) or off (0) */ void innokom_set_led(int led, int state) { switch(led) { /* case 0: if (state==1) { GPCR0 |= CSB226_USER_LED0; } else if (state==0) { GPSR0 |= CSB226_USER_LED0; } break; case 1: if (state==1) { GPCR0 |= CSB226_USER_LED1; } else if (state==0) { GPSR0 |= CSB226_USER_LED1; } break; case 2: if (state==1) { GPCR0 |= CSB226_USER_LED2; } else if (state==0) { GPSR0 |= CSB226_USER_LED2; } break; */ } return; } /** * show_boot_progress: - indicate state of the boot process * * @param status: Status number - see README for details. * * The CSB226 does only have 3 LEDs, so we switch them on at the most * important states (1, 5, 15). */ void show_boot_progress (int status) { switch(status) { /* case 1: csb226_set_led(0,1); break; case 5: csb226_set_led(1,1); break; case 15: csb226_set_led(2,1); break; */ } return; }