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
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
415 lines
10 KiB
415 lines
10 KiB
/*
|
|
* (C) Copyright 2002
|
|
* Gary Jennejohn, DENX Software Engineering, <gj@denx.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
|
|
*/
|
|
|
|
/* #define DEBUG */
|
|
|
|
#include <common.h>
|
|
#include <malloc.h>
|
|
#include <s3c2400.h>
|
|
#include <command.h>
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
|
|
#ifdef CFG_BRIGHTNESS
|
|
static void spi_init(void);
|
|
static void wait_transmit_done(void);
|
|
static void tsc2000_write(unsigned int page, unsigned int reg,
|
|
unsigned int data);
|
|
static void tsc2000_set_brightness(void);
|
|
#endif
|
|
#ifdef CONFIG_MODEM_SUPPORT
|
|
static int key_pressed(void);
|
|
extern void disable_putc(void);
|
|
extern int do_mdm_init; /* defined in common/main.c */
|
|
|
|
/*
|
|
* We need a delay of at least 500 us after turning on the VFD clock
|
|
* before we can read any useful information for the CPLD controlling
|
|
* the keyboard switches. Let's play safe and wait 5 ms. The problem
|
|
* is that timers are not available yet, so we use a manually timed
|
|
* loop.
|
|
*/
|
|
#define KBD_MDELAY 5000
|
|
static void udelay_no_timer (int usec)
|
|
{
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
int i;
|
|
int delay = usec * 3;
|
|
|
|
for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = 145;
|
|
}
|
|
#endif /* CONFIG_MODEM_SUPPORT */
|
|
|
|
/*
|
|
* Miscellaneous platform dependent initialisations
|
|
*/
|
|
|
|
int board_init ()
|
|
{
|
|
#if defined(CONFIG_VFD)
|
|
extern int vfd_init_clocks(void);
|
|
#endif
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
|
|
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
|
|
|
|
/* memory and cpu-speed are setup before relocation */
|
|
#ifdef CONFIG_TRAB_50MHZ
|
|
/* change the clock to be 50 MHz 1:1:1 */
|
|
/* MDIV:0x5c PDIV:4 SDIV:2 */
|
|
clk_power->MPLLCON = 0x5c042;
|
|
clk_power->CLKDIVN = 0;
|
|
#else
|
|
/* change the clock to be 133 MHz 1:2:4 */
|
|
/* MDIV:0x7d PDIV:4 SDIV:1 */
|
|
clk_power->MPLLCON = 0x7d041;
|
|
clk_power->CLKDIVN = 3;
|
|
#endif
|
|
|
|
/* set up the I/O ports */
|
|
gpio->PACON = 0x3ffff;
|
|
gpio->PBCON = 0xaaaaaaaa;
|
|
gpio->PBUP = 0xffff;
|
|
/* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
|
|
/* 00, 10, 10, 10, 10, 10, 10 */
|
|
gpio->PFCON = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
|
|
#ifdef CONFIG_HWFLOW
|
|
/* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
|
|
gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
|
|
#else
|
|
/* do not pull up RXD0, RXD1, TXD0, TXD1 */
|
|
gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3);
|
|
#endif
|
|
gpio->PGCON = 0x0;
|
|
gpio->PGUP = 0x0;
|
|
gpio->OPENCR= 0x0;
|
|
|
|
/* suppress flicker of the VFDs */
|
|
gpio->MISCCR = 0x40;
|
|
gpio->PFCON |= (2<<12);
|
|
|
|
/* arch number of SAMSUNG-Board */
|
|
/* MACH_TYPE_SMDK2400 */
|
|
/* XXX this isn't really correct, but keep it for now */
|
|
gd->bd->bi_arch_number = 145;
|
|
|
|
/* adress of boot parameters */
|
|
gd->bd->bi_boot_params = 0x0c000100;
|
|
|
|
/* Make sure both buzzers are turned off */
|
|
gpio->PDCON |= 0x5400;
|
|
gpio->PDDAT &= ~0xE0;
|
|
|
|
#ifdef CONFIG_VFD
|
|
vfd_init_clocks();
|
|
#endif /* CONFIG_VFD */
|
|
|
|
#ifdef CONFIG_MODEM_SUPPORT
|
|
udelay_no_timer (KBD_MDELAY);
|
|
|
|
if (key_pressed()) {
|
|
disable_putc(); /* modem doesn't understand banner etc */
|
|
do_mdm_init = 1;
|
|
}
|
|
#endif /* CONFIG_MODEM_SUPPORT */
|
|
|
|
#ifdef CONFIG_DRIVER_S3C24X0_I2C
|
|
/* Configure I/O ports PG5 und PG6 for I2C */
|
|
gpio->PGCON = (gpio->PGCON & 0x003c00) | 0x003c00;
|
|
#endif /* CONFIG_DRIVER_S3C24X0_I2C */
|
|
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Keyboard Controller
|
|
*/
|
|
|
|
/* Maximum key number */
|
|
#define KEYBD_KEY_NUM 4
|
|
|
|
#define KBD_DATA (((*(volatile ulong *)0x04020000) >> 16) & 0xF)
|
|
|
|
static uchar *key_match (ulong);
|
|
|
|
int misc_init_r (void)
|
|
{
|
|
ulong kbd_data = KBD_DATA;
|
|
uchar keybd_env[KEYBD_KEY_NUM + 1];
|
|
uchar *str;
|
|
int i;
|
|
|
|
#ifdef CONFIG_AUTO_UPDATE
|
|
extern int do_auto_update(void);
|
|
/* this has priority over all else */
|
|
do_auto_update();
|
|
#endif
|
|
|
|
for (i = 0; i < KEYBD_KEY_NUM; ++i) {
|
|
keybd_env[i] = '0' + ((kbd_data >> i) & 1);
|
|
}
|
|
keybd_env[i] = '\0';
|
|
debug ("** Setting keybd=\"%s\"\n", keybd_env);
|
|
setenv ("keybd", keybd_env);
|
|
|
|
str = strdup (key_match (kbd_data)); /* decode keys */
|
|
|
|
#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
|
|
debug ("** Setting preboot=\"%s\"\n", str);
|
|
setenv ("preboot", str); /* set or delete definition */
|
|
#endif /* CONFIG_PREBOOT */
|
|
if (str != NULL) {
|
|
free (str);
|
|
}
|
|
|
|
#ifdef CFG_BRIGHTNESS
|
|
tsc2000_set_brightness();
|
|
#endif
|
|
return (0);
|
|
}
|
|
|
|
#ifdef CONFIG_PREBOOT
|
|
|
|
static uchar kbd_magic_prefix[] = "key_magic";
|
|
static uchar kbd_command_prefix[] = "key_cmd";
|
|
|
|
static int compare_magic (ulong kbd_data, uchar *str)
|
|
{
|
|
uchar key_mask;
|
|
|
|
debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
|
|
for (; *str; str++)
|
|
{
|
|
uchar c = *str - '1';
|
|
|
|
if (c >= KEYBD_KEY_NUM) /* bad key number */
|
|
return -1;
|
|
|
|
key_mask = 1 << c;
|
|
|
|
if (!(kbd_data & key_mask)) { /* key not pressed */
|
|
debug ( "compare_magic: "
|
|
"kbd: %04lx mask: %04lx - key not pressed\n",
|
|
kbd_data, key_mask );
|
|
return -1;
|
|
}
|
|
|
|
kbd_data &= ~key_mask;
|
|
}
|
|
|
|
if (kbd_data) { /* key(s) not released */
|
|
debug ( "compare_magic: "
|
|
"kbd: %04lx - key(s) not released\n", kbd_data);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Check if pressed key(s) match magic sequence,
|
|
* and return the command string associated with that key(s).
|
|
*
|
|
* If no key press was decoded, NULL is returned.
|
|
*
|
|
* Note: the first character of the argument will be overwritten with
|
|
* the "magic charcter code" of the decoded key(s), or '\0'.
|
|
*
|
|
*
|
|
* Note: the string points to static environment data and must be
|
|
* saved before you call any function that modifies the environment.
|
|
*/
|
|
static uchar *key_match (ulong kbd_data)
|
|
{
|
|
uchar magic[sizeof (kbd_magic_prefix) + 1];
|
|
uchar cmd_name[sizeof (kbd_command_prefix) + 1];
|
|
uchar *suffix;
|
|
uchar *kbd_magic_keys;
|
|
|
|
/*
|
|
* The following string defines the characters that can pe appended
|
|
* to "key_magic" to form the names of environment variables that
|
|
* hold "magic" key codes, i. e. such key codes that can cause
|
|
* pre-boot actions. If the string is empty (""), then only
|
|
* "key_magic" is checked (old behaviour); the string "125" causes
|
|
* checks for "key_magic1", "key_magic2" and "key_magic5", etc.
|
|
*/
|
|
if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
|
|
kbd_magic_keys = "";
|
|
|
|
debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
|
|
|
|
/* loop over all magic keys;
|
|
* use '\0' suffix in case of empty string
|
|
*/
|
|
for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
|
|
{
|
|
sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
|
|
|
|
debug ("key_match: magic=\"%s\"\n",
|
|
getenv(magic) ? getenv(magic) : "<UNDEFINED>");
|
|
|
|
if (compare_magic(kbd_data, getenv(magic)) == 0)
|
|
{
|
|
sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
|
|
debug ("key_match: cmdname %s=\"%s\"\n",
|
|
cmd_name,
|
|
getenv (cmd_name) ?
|
|
getenv (cmd_name) :
|
|
"<UNDEFINED>");
|
|
return (getenv (cmd_name));
|
|
}
|
|
}
|
|
debug ("key_match: no match\n");
|
|
return (NULL);
|
|
}
|
|
#endif /* CONFIG_PREBOOT */
|
|
|
|
/* Read Keyboard status */
|
|
int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
|
|
{
|
|
ulong kbd_data = KBD_DATA;
|
|
uchar keybd_env[KEYBD_KEY_NUM + 1];
|
|
int i;
|
|
|
|
puts ("Keys:");
|
|
for (i = 0; i < KEYBD_KEY_NUM; ++i) {
|
|
keybd_env[i] = '0' + ((kbd_data >> i) & 1);
|
|
printf (" %c", keybd_env[i]);
|
|
}
|
|
keybd_env[i] = '\0';
|
|
putc ('\n');
|
|
setenv ("keybd", keybd_env);
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
kbd, 1, 1, do_kbd,
|
|
"kbd - read keyboard status\n",
|
|
NULL
|
|
);
|
|
|
|
#ifdef CONFIG_MODEM_SUPPORT
|
|
static int key_pressed(void)
|
|
{
|
|
return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
|
|
}
|
|
#endif /* CONFIG_MODEM_SUPPORT */
|
|
|
|
#ifdef CFG_BRIGHTNESS
|
|
|
|
static inline void SET_CS_TOUCH(void)
|
|
{
|
|
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
|
|
|
|
gpio->PDDAT &= 0x5FF;
|
|
}
|
|
|
|
static inline void CLR_CS_TOUCH(void)
|
|
{
|
|
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
|
|
|
|
gpio->PDDAT |= 0x200;
|
|
}
|
|
|
|
static void spi_init(void)
|
|
{
|
|
S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
|
|
S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
|
|
int i;
|
|
|
|
/* Configure I/O ports. */
|
|
gpio->PDCON = (gpio->PDCON & 0xF3FFFF) | 0x040000;
|
|
gpio->PGCON = (gpio->PGCON & 0x0F3FFF) | 0x008000;
|
|
gpio->PGCON = (gpio->PGCON & 0x0CFFFF) | 0x020000;
|
|
gpio->PGCON = (gpio->PGCON & 0x03FFFF) | 0x080000;
|
|
|
|
CLR_CS_TOUCH();
|
|
|
|
spi->ch[0].SPPRE = 0x1F; /* Baudrate ca. 514kHz */
|
|
spi->ch[0].SPPIN = 0x01; /* SPI-MOSI holds Level after last bit */
|
|
spi->ch[0].SPCON = 0x1A; /* Polling, Prescaler, Master, CPOL=0, CPHA=1 */
|
|
|
|
/* Dummy byte ensures clock to be low. */
|
|
for (i = 0; i < 10; i++) {
|
|
spi->ch[0].SPTDAT = 0xFF;
|
|
}
|
|
wait_transmit_done();
|
|
}
|
|
|
|
static void wait_transmit_done(void)
|
|
{
|
|
S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
|
|
|
|
while (!(spi->ch[0].SPSTA & 0x01)); /* wait until transfer is done */
|
|
}
|
|
|
|
static void tsc2000_write(unsigned int page, unsigned int reg,
|
|
unsigned int data)
|
|
{
|
|
S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
|
|
unsigned int command;
|
|
|
|
SET_CS_TOUCH();
|
|
command = 0x0000;
|
|
command |= (page << 11);
|
|
command |= (reg << 5);
|
|
|
|
spi->ch[0].SPTDAT = (command & 0xFF00) >> 8;
|
|
wait_transmit_done();
|
|
spi->ch[0].SPTDAT = (command & 0x00FF);
|
|
wait_transmit_done();
|
|
spi->ch[0].SPTDAT = (data & 0xFF00) >> 8;
|
|
wait_transmit_done();
|
|
spi->ch[0].SPTDAT = (data & 0x00FF);
|
|
wait_transmit_done();
|
|
|
|
CLR_CS_TOUCH();
|
|
}
|
|
|
|
static void tsc2000_set_brightness(void)
|
|
{
|
|
uchar tmp[10];
|
|
int i, br;
|
|
|
|
spi_init();
|
|
tsc2000_write(1, 2, 0x0); /* Power up DAC */
|
|
|
|
i = getenv_r("brightness", tmp, sizeof(tmp));
|
|
br = (i > 0)
|
|
? (int) simple_strtoul (tmp, NULL, 10)
|
|
: CFG_BRIGHTNESS;
|
|
|
|
tsc2000_write(0, 0xb, br & 0xff);
|
|
}
|
|
#endif
|
|
|