mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-03 09:59:44 +00:00
4bdb53cafb
The environment variable "ver" is now set before do_auto_update() is called, so that "ver" can be used in USB update scripts. Patch by Martin Krause, 27 Oct 2005
420 lines
10 KiB
C
420 lines
10 KiB
C
/*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
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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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/* #define DEBUG */
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#include <common.h>
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#include <malloc.h>
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#include <s3c2400.h>
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#include <command.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CFG_BRIGHTNESS
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static void spi_init(void);
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static void wait_transmit_done(void);
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static void tsc2000_write(unsigned int page, unsigned int reg,
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unsigned int data);
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static void tsc2000_set_brightness(void);
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#endif
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#ifdef CONFIG_MODEM_SUPPORT
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static int key_pressed(void);
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extern void disable_putc(void);
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extern int do_mdm_init; /* defined in common/main.c */
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/*
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* We need a delay of at least 500 us after turning on the VFD clock
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* before we can read any useful information for the CPLD controlling
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* the keyboard switches. Let's play safe and wait 5 ms. The problem
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* is that timers are not available yet, so we use a manually timed
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* loop.
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*/
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#define KBD_MDELAY 5000
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static void udelay_no_timer (int usec)
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{
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int i;
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int delay = usec * 3;
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for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = MACH_TYPE_TRAB;
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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/*
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* Miscellaneous platform dependent initialisations
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*/
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int board_init ()
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{
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#if defined(CONFIG_VFD)
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extern int vfd_init_clocks(void);
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#endif
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S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
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S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
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/* memory and cpu-speed are setup before relocation */
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#ifdef CONFIG_TRAB_50MHZ
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/* change the clock to be 50 MHz 1:1:1 */
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/* MDIV:0x5c PDIV:4 SDIV:2 */
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clk_power->MPLLCON = 0x5c042;
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clk_power->CLKDIVN = 0;
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#else
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/* change the clock to be 133 MHz 1:2:4 */
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/* MDIV:0x7d PDIV:4 SDIV:1 */
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clk_power->MPLLCON = 0x7d041;
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clk_power->CLKDIVN = 3;
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#endif
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/* set up the I/O ports */
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gpio->PACON = 0x3ffff;
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gpio->PBCON = 0xaaaaaaaa;
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gpio->PBUP = 0xffff;
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/* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
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/* 00, 10, 10, 10, 10, 10, 10 */
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gpio->PFCON = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
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#ifdef CONFIG_HWFLOW
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/* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
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gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
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#else
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/* do not pull up RXD0, RXD1, TXD0, TXD1 */
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gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3);
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#endif
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gpio->PGCON = 0x0;
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gpio->PGUP = 0x0;
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gpio->OPENCR= 0x0;
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/* suppress flicker of the VFDs */
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gpio->MISCCR = 0x40;
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gpio->PFCON |= (2<<12);
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gd->bd->bi_arch_number = MACH_TYPE_TRAB;
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/* adress of boot parameters */
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gd->bd->bi_boot_params = 0x0c000100;
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/* Make sure both buzzers are turned off */
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gpio->PDCON |= 0x5400;
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gpio->PDDAT &= ~0xE0;
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#ifdef CONFIG_VFD
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vfd_init_clocks();
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#endif /* CONFIG_VFD */
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#ifdef CONFIG_MODEM_SUPPORT
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udelay_no_timer (KBD_MDELAY);
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if (key_pressed()) {
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disable_putc(); /* modem doesn't understand banner etc */
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do_mdm_init = 1;
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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#ifdef CONFIG_DRIVER_S3C24X0_I2C
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/* Configure I/O ports PG5 und PG6 for I2C */
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gpio->PGCON = (gpio->PGCON & 0x003c00) | 0x003c00;
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#endif /* CONFIG_DRIVER_S3C24X0_I2C */
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return 0;
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}
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int dram_init (void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
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return 0;
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}
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/*-----------------------------------------------------------------------
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* Keyboard Controller
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*/
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/* Maximum key number */
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#define KEYBD_KEY_NUM 4
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#define KBD_DATA (((*(volatile ulong *)0x04020000) >> 16) & 0xF)
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static uchar *key_match (ulong);
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int misc_init_r (void)
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{
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ulong kbd_data = KBD_DATA;
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uchar keybd_env[KEYBD_KEY_NUM + 1];
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uchar *str;
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int i;
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#ifdef CONFIG_VERSION_VARIABLE
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{
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/* Set version variable. Please note, that this variable is
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* also set in main_loop() later in the boot process. The
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* version variable has to be set this early, because so it
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* could be used in script files on an usb stick, which
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* might be called during do_auto_update() */
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extern char version_string[];
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setenv ("ver", version_string);
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}
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#endif /* CONFIG_VERSION_VARIABLE */
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#ifdef CONFIG_AUTO_UPDATE
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extern int do_auto_update(void);
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/* this has priority over all else */
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do_auto_update();
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#endif
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for (i = 0; i < KEYBD_KEY_NUM; ++i) {
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keybd_env[i] = '0' + ((kbd_data >> i) & 1);
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}
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keybd_env[i] = '\0';
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debug ("** Setting keybd=\"%s\"\n", keybd_env);
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setenv ("keybd", keybd_env);
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str = strdup (key_match (kbd_data)); /* decode keys */
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#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
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debug ("** Setting preboot=\"%s\"\n", str);
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setenv ("preboot", str); /* set or delete definition */
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#endif /* CONFIG_PREBOOT */
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if (str != NULL) {
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free (str);
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}
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#ifdef CFG_BRIGHTNESS
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tsc2000_set_brightness();
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#endif
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return (0);
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}
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#ifdef CONFIG_PREBOOT
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static uchar kbd_magic_prefix[] = "key_magic";
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static uchar kbd_command_prefix[] = "key_cmd";
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static int compare_magic (ulong kbd_data, uchar *str)
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{
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uchar key_mask;
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debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
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for (; *str; str++)
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{
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uchar c = *str - '1';
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if (c >= KEYBD_KEY_NUM) /* bad key number */
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return -1;
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key_mask = 1 << c;
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if (!(kbd_data & key_mask)) { /* key not pressed */
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debug ( "compare_magic: "
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"kbd: %04lx mask: %04lx - key not pressed\n",
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kbd_data, key_mask );
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return -1;
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}
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kbd_data &= ~key_mask;
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}
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if (kbd_data) { /* key(s) not released */
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debug ( "compare_magic: "
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"kbd: %04lx - key(s) not released\n", kbd_data);
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return -1;
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}
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return 0;
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}
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/*-----------------------------------------------------------------------
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* Check if pressed key(s) match magic sequence,
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* and return the command string associated with that key(s).
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*
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* If no key press was decoded, NULL is returned.
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*
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* Note: the first character of the argument will be overwritten with
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* the "magic charcter code" of the decoded key(s), or '\0'.
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*
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*
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* Note: the string points to static environment data and must be
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* saved before you call any function that modifies the environment.
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*/
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static uchar *key_match (ulong kbd_data)
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{
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uchar magic[sizeof (kbd_magic_prefix) + 1];
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uchar cmd_name[sizeof (kbd_command_prefix) + 1];
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uchar *suffix;
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uchar *kbd_magic_keys;
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/*
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* The following string defines the characters that can pe appended
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* to "key_magic" to form the names of environment variables that
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* hold "magic" key codes, i. e. such key codes that can cause
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* pre-boot actions. If the string is empty (""), then only
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* "key_magic" is checked (old behaviour); the string "125" causes
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* checks for "key_magic1", "key_magic2" and "key_magic5", etc.
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*/
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if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
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kbd_magic_keys = "";
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debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
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/* loop over all magic keys;
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* use '\0' suffix in case of empty string
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*/
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for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
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{
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sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
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debug ("key_match: magic=\"%s\"\n",
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getenv(magic) ? getenv(magic) : "<UNDEFINED>");
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if (compare_magic(kbd_data, getenv(magic)) == 0)
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{
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sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
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debug ("key_match: cmdname %s=\"%s\"\n",
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cmd_name,
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getenv (cmd_name) ?
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getenv (cmd_name) :
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"<UNDEFINED>");
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return (getenv (cmd_name));
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}
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}
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debug ("key_match: no match\n");
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return (NULL);
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}
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#endif /* CONFIG_PREBOOT */
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/* Read Keyboard status */
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int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
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{
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ulong kbd_data = KBD_DATA;
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uchar keybd_env[KEYBD_KEY_NUM + 1];
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int i;
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puts ("Keys:");
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for (i = 0; i < KEYBD_KEY_NUM; ++i) {
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keybd_env[i] = '0' + ((kbd_data >> i) & 1);
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printf (" %c", keybd_env[i]);
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}
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keybd_env[i] = '\0';
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putc ('\n');
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setenv ("keybd", keybd_env);
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return 0;
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}
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U_BOOT_CMD(
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kbd, 1, 1, do_kbd,
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"kbd - read keyboard status\n",
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NULL
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);
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#ifdef CONFIG_MODEM_SUPPORT
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static int key_pressed(void)
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{
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return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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#ifdef CFG_BRIGHTNESS
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static inline void SET_CS_TOUCH(void)
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{
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S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
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gpio->PDDAT &= 0x5FF;
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}
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static inline void CLR_CS_TOUCH(void)
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{
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S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
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gpio->PDDAT |= 0x200;
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}
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static void spi_init(void)
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{
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S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
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S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
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int i;
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/* Configure I/O ports. */
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gpio->PDCON = (gpio->PDCON & 0xF3FFFF) | 0x040000;
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gpio->PGCON = (gpio->PGCON & 0x0F3FFF) | 0x008000;
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gpio->PGCON = (gpio->PGCON & 0x0CFFFF) | 0x020000;
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gpio->PGCON = (gpio->PGCON & 0x03FFFF) | 0x080000;
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CLR_CS_TOUCH();
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spi->ch[0].SPPRE = 0x1F; /* Baudrate ca. 514kHz */
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spi->ch[0].SPPIN = 0x01; /* SPI-MOSI holds Level after last bit */
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spi->ch[0].SPCON = 0x1A; /* Polling, Prescaler, Master, CPOL=0, CPHA=1 */
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/* Dummy byte ensures clock to be low. */
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for (i = 0; i < 10; i++) {
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spi->ch[0].SPTDAT = 0xFF;
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}
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wait_transmit_done();
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}
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static void wait_transmit_done(void)
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{
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S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
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while (!(spi->ch[0].SPSTA & 0x01)); /* wait until transfer is done */
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}
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static void tsc2000_write(unsigned int page, unsigned int reg,
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unsigned int data)
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{
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S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
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unsigned int command;
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SET_CS_TOUCH();
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command = 0x0000;
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command |= (page << 11);
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command |= (reg << 5);
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spi->ch[0].SPTDAT = (command & 0xFF00) >> 8;
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wait_transmit_done();
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spi->ch[0].SPTDAT = (command & 0x00FF);
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wait_transmit_done();
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spi->ch[0].SPTDAT = (data & 0xFF00) >> 8;
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wait_transmit_done();
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spi->ch[0].SPTDAT = (data & 0x00FF);
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wait_transmit_done();
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CLR_CS_TOUCH();
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}
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static void tsc2000_set_brightness(void)
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{
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uchar tmp[10];
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int i, br;
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spi_init();
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tsc2000_write(1, 2, 0x0); /* Power up DAC */
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i = getenv_r("brightness", tmp, sizeof(tmp));
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br = (i > 0)
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? (int) simple_strtoul (tmp, NULL, 10)
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: CFG_BRIGHTNESS;
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tsc2000_write(0, 0xb, br & 0xff);
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}
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#endif
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