Commit f7264c36 authored by Heiko Schocher's avatar Heiko Schocher Committed by Albert ARIBAUD
Browse files

arm, davinci: add support for am1808 based enbw_cmc board



- booting from NOR Flash with direct boot method
- POST support
- LOGBUF support
Signed-off-by: default avatarHeiko Schocher <hs@denx.de>
Cc: Paulraj Sandeep <s-paulraj@ti.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Christian Riesch <christian.riesch@omicron.at>
parent 5b51e7f3
......@@ -812,6 +812,7 @@ Jens Scharsig <esw@bus-elektronik.de>
Heiko Schocher <hs@denx.de>
enbw_cmc ARM926EJS (AM1808 SoC)
magnesium i.MX27
mgcoge3un ARM926EJS (Kirkwood SoC)
......
#
# (C) Copyright 2000, 2001, 2002
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
#
# 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 $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).o
COBJS := $(BOARD).o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
SOBJS := $(addprefix $(obj),$(SOBJS))
$(LIB): $(obj).depend $(OBJS) $(SOBJS)
$(call cmd_link_o_target, $(OBJS) $(SOBJS))
#########################################################################
# This is for $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
#########################################################################
/*
* (C) Copyright 2011
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* Based on:
* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
*
* Based on da830evm.c. Original Copyrights follow:
*
* Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <command.h>
#include <environment.h>
#include <hwconfig.h>
#include <i2c.h>
#include <malloc.h>
#include <miiphy.h>
#include <mmc.h>
#include <net.h>
#include <netdev.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/da850_lowlevel.h>
#include <asm/arch/davinci_misc.h>
#include <asm/arch/emif_defs.h>
#include <asm/arch/emac_defs.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pinmux_defs.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sdmmc_defs.h>
#include <asm/arch/timer_defs.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct lpsc_resource lpsc[] = {
{ DAVINCI_LPSC_AEMIF },
{ DAVINCI_LPSC_SPI1 },
{ DAVINCI_LPSC_ARM_RAM_ROM },
{ DAVINCI_LPSC_UART0 },
{ DAVINCI_LPSC_EMAC },
{ DAVINCI_LPSC_UART0 },
{ DAVINCI_LPSC_GPIO },
{ DAVINCI_LPSC_DDR_EMIF },
{ DAVINCI_LPSC_UART1 },
{ DAVINCI_LPSC_UART2 },
{ DAVINCI_LPSC_MMC_SD1 },
{ DAVINCI_LPSC_USB20 },
{ DAVINCI_LPSC_USB11 },
};
static const struct pinmux_config enbw_pins[] = {
{ pinmux(0), 8, 0 },
{ pinmux(0), 8, 1 },
{ pinmux(0), 8, 2 },
{ pinmux(0), 8, 3 },
{ pinmux(0), 8, 4 },
{ pinmux(0), 8, 5 },
{ pinmux(1), 4, 0 },
{ pinmux(1), 8, 1 },
{ pinmux(1), 8, 2 },
{ pinmux(1), 8, 3 },
{ pinmux(1), 8, 4 },
{ pinmux(1), 8, 5 },
{ pinmux(1), 8, 6 },
{ pinmux(1), 4, 7 },
{ pinmux(2), 8, 0 },
{ pinmux(5), 1, 0 },
{ pinmux(5), 1, 3 },
{ pinmux(5), 1, 7 },
{ pinmux(6), 1, 0 },
{ pinmux(6), 1, 1 },
{ pinmux(6), 8, 2 },
{ pinmux(6), 8, 3 },
{ pinmux(6), 1, 4 },
{ pinmux(6), 8, 5 },
{ pinmux(6), 1, 7 },
{ pinmux(7), 8, 2 },
{ pinmux(7), 1, 3 },
{ pinmux(7), 1, 6 },
{ pinmux(7), 1, 7 },
{ pinmux(13), 8, 2 },
{ pinmux(13), 8, 3 },
{ pinmux(13), 8, 4 },
{ pinmux(13), 8, 5 },
{ pinmux(13), 8, 6 },
{ pinmux(13), 8, 7 },
{ pinmux(14), 8, 0 },
{ pinmux(14), 8, 1 },
{ pinmux(16), 8, 1 },
{ pinmux(16), 8, 2 },
{ pinmux(16), 8, 3 },
{ pinmux(16), 8, 4 },
{ pinmux(16), 8, 5 },
{ pinmux(16), 8, 6 },
{ pinmux(16), 8, 7 },
{ pinmux(17), 1, 0 },
{ pinmux(17), 1, 1 },
{ pinmux(17), 1, 2 },
{ pinmux(17), 8, 3 },
{ pinmux(17), 8, 4 },
{ pinmux(17), 8, 5 },
{ pinmux(17), 8, 6 },
{ pinmux(17), 8, 7 },
{ pinmux(18), 8, 0 },
{ pinmux(18), 8, 1 },
{ pinmux(18), 2, 2 },
{ pinmux(18), 2, 3 },
{ pinmux(18), 2, 4 },
{ pinmux(18), 8, 6 },
{ pinmux(18), 8, 7 },
{ pinmux(19), 8, 0 },
{ pinmux(19), 2, 1 },
{ pinmux(19), 2, 2 },
{ pinmux(19), 2, 3 },
{ pinmux(19), 2, 4 },
{ pinmux(19), 8, 5 },
{ pinmux(19), 8, 6 },
};
const struct pinmux_resource pinmuxes[] = {
PINMUX_ITEM(emac_pins_mii),
PINMUX_ITEM(emac_pins_mdio),
PINMUX_ITEM(i2c0_pins),
PINMUX_ITEM(emifa_pins_cs2),
PINMUX_ITEM(emifa_pins_cs3),
PINMUX_ITEM(emifa_pins_cs4),
PINMUX_ITEM(emifa_pins_nand),
PINMUX_ITEM(emifa_pins_nor),
PINMUX_ITEM(spi1_pins_base),
PINMUX_ITEM(spi1_pins_scs0),
PINMUX_ITEM(uart1_pins_txrx),
PINMUX_ITEM(uart2_pins_txrx),
PINMUX_ITEM(uart2_pins_rtscts),
PINMUX_ITEM(enbw_pins),
};
const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
struct gpio_config {
char name[GPIO_NAME_SIZE];
unsigned char bank;
unsigned char gpio;
unsigned char out;
unsigned char value;
};
static const struct gpio_config enbw_gpio_config[] = {
{ "RS485 enable", 8, 11, 1, 0 },
{ "RS485 iso", 8, 10, 1, 0 },
{ "W2HUT RS485 Rx ena", 8, 9, 1, 0 },
{ "W2HUT RS485 iso", 8, 8, 1, 0 },
{ "LAN reset", 7, 15, 1, 1 },
{ "ena 11V PLC", 7, 14, 1, 0 },
{ "ena 1.5V PLC", 7, 13, 1, 0 },
{ "disable VBUS", 7, 12, 1, 1 },
{ "PLC reset", 6, 13, 1, 1 },
{ "LCM RS", 6, 12, 1, 0 },
{ "LCM R/W", 6, 11, 1, 0 },
{ "PLC pairing", 6, 10, 1, 1 },
{ "PLC MDIO CLK", 6, 9, 1, 0 },
{ "HK218", 6, 8, 1, 0 },
{ "HK218 Rx", 6, 1, 1, 1 },
{ "TPM reset", 6, 0, 1, 1 },
{ "LCM E", 2, 2, 1, 1 },
{ "PV-IF RxD ena", 0, 15, 1, 1 },
{ "LED1", 1, 15, 1, 1 },
{ "LED2", 0, 1, 1, 1 },
{ "LED3", 0, 2, 1, 1 },
{ "LED4", 0, 3, 1, 1 },
{ "LED5", 0, 4, 1, 1 },
{ "LED6", 0, 5, 1, 0 },
{ "LED7", 0, 6, 1, 0 },
{ "LED8", 0, 14, 1, 0 },
{ "USER1", 0, 12, 0, 0 },
{ "USER2", 0, 13, 0, 0 },
};
#define PHY_POWER 0x0800
static void enbw_cmc_switch(int port, int on)
{
const char *devname;
unsigned char phyaddr = 3;
unsigned char reg = 0;
unsigned short data;
if (port == 1)
phyaddr = 2;
devname = miiphy_get_current_dev();
if (!devname) {
printf("Error: no mii device\n");
return;
}
if (miiphy_read(devname, phyaddr, reg, &data) != 0) {
printf("Error reading from the PHY addr=%02x reg=%02x\n",
phyaddr, reg);
return;
}
if (on)
data &= ~PHY_POWER;
else
data |= PHY_POWER;
if (miiphy_write(devname, phyaddr, reg, data) != 0) {
printf("Error writing to the PHY addr=%02x reg=%02x\n",
phyaddr, reg);
return;
}
}
int board_init(void)
{
int i, ret;
#ifndef CONFIG_USE_IRQ
irq_init();
#endif
/* address of boot parameters, not used as booting with DTT */
gd->bd->bi_boot_params = 0;
for (i = 0; i < ARRAY_SIZE(enbw_gpio_config); i++) {
int gpio = enbw_gpio_config[i].bank * 16 +
enbw_gpio_config[i].gpio;
ret = gpio_request(gpio, enbw_gpio_config[i].name);
if (ret) {
printf("%s: Could not get %s gpio\n", __func__,
enbw_gpio_config[i].name);
return -1;
}
if (enbw_gpio_config[i].out)
gpio_direction_output(gpio,
enbw_gpio_config[i].value);
else
gpio_direction_input(gpio);
}
/* setup the SUSPSRC for ARM to control emulation suspend */
clrbits_le32(&davinci_syscfg_regs->suspsrc,
(DAVINCI_SYSCFG_SUSPSRC_EMAC | DAVINCI_SYSCFG_SUSPSRC_I2C |
DAVINCI_SYSCFG_SUSPSRC_SPI1 | DAVINCI_SYSCFG_SUSPSRC_TIMER0 |
DAVINCI_SYSCFG_SUSPSRC_UART2));
return 0;
}
#ifdef CONFIG_DRIVER_TI_EMAC
/*
* Initializes on-board ethernet controllers.
*/
int board_eth_init(bd_t *bis)
{
#ifdef CONFIG_DRIVER_TI_EMAC
davinci_emac_mii_mode_sel(0);
#endif /* CONFIG_DRIVER_TI_EMAC */
if (!davinci_emac_initialize()) {
printf("Error: Ethernet init failed!\n");
return -1;
}
if (hwconfig_subarg_cmp("switch", "lan", "on"))
/* Switch port lan on */
enbw_cmc_switch(1, 1);
else
enbw_cmc_switch(1, 0);
if (hwconfig_subarg_cmp("switch", "pwl", "on"))
/* Switch port pwl on */
enbw_cmc_switch(2, 1);
else
enbw_cmc_switch(2, 0);
return 0;
}
#endif /* CONFIG_DRIVER_TI_EMAC */
#ifdef CONFIG_PREBOOT
static uchar kbd_magic_prefix[] = "key_magic_";
static uchar kbd_command_prefix[] = "key_cmd_";
struct kbd_data_t {
char s1;
};
struct kbd_data_t *get_keys(struct kbd_data_t *kbd_data)
{
/* read SW1 + SW2 */
kbd_data->s1 = gpio_get_value(12) +
(gpio_get_value(13) << 1);
return kbd_data;
}
static int compare_magic(const struct kbd_data_t *kbd_data, char *str)
{
char s1 = str[0];
if (s1 >= '0' && s1 <= '9')
s1 -= '0';
else if (s1 >= 'a' && s1 <= 'f')
s1 = s1 - 'a' + 10;
else if (s1 >= 'A' && s1 <= 'F')
s1 = s1 - 'A' + 10;
else
return -1;
if (s1 != kbd_data->s1)
return -1;
return 0;
}
static char *key_match(const struct kbd_data_t *kbd_data)
{
char magic[sizeof(kbd_magic_prefix) + 1];
char *suffix;
char *kbd_magic_keys;
/*
* The following string defines the characters that can be 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.
*/
kbd_magic_keys = getenv("magic_keys");
if (kbd_magic_keys == NULL)
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);
if (compare_magic(kbd_data, getenv(magic)) == 0) {
char cmd_name[sizeof(kbd_command_prefix) + 1];
char *cmd;
sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
cmd = getenv(cmd_name);
return cmd;
}
}
return NULL;
}
#endif /* CONFIG_PREBOOT */
int misc_init_r(void)
{
char *s, buf[32];
#ifdef CONFIG_PREBOOT
struct kbd_data_t kbd_data;
/* Decode keys */
char *str = strdup(key_match(get_keys(&kbd_data)));
/* Set or delete definition */
setenv("preboot", str);
free(str);
#endif /* CONFIG_PREBOOT */
/* count all restarts, and save this in an environment var */
s = getenv("restartcount");
if (s)
sprintf(buf, "%ld", simple_strtoul(s, NULL, 10) + 1);
else
strcpy(buf, "1");
setenv("restartcount", buf);
saveenv();
#ifdef CONFIG_HW_WATCHDOG
davinci_hw_watchdog_enable();
#endif
return 0;
}
struct cmc_led {
char name[20];
unsigned char bank;
unsigned char gpio;
};
struct cmc_led led_table[] = {
{"led1", 1, 15},
{"led2", 0, 1},
{"led3", 0, 2},
{"led4", 0, 3},
{"led5", 0, 4},
{"led6", 0, 5},
{"led7", 0, 6},
{"led8", 0, 14},
};
static int cmc_get_led_state(struct cmc_led *led)
{
int value;
int gpio = led->bank * 16 + led->gpio;
value = gpio_get_value(gpio);
return value;
}
static int cmc_set_led_state(struct cmc_led *led, int state)
{
int gpio = led->bank * 16 + led->gpio;
gpio_set_value(gpio, state);
return 0;
}
static int do_led(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
struct cmc_led *led;
int found = 0;
int i = 0;
int only_print = 0;
int len = ARRAY_SIZE(led_table);
if (argc < 2)
return cmd_usage(cmdtp);
if (argc < 3)
only_print = 1;
led = led_table;
while ((!found) && (i < len)) {
if (strcmp(argv[1], led->name) == 0) {
found = 1;
} else {
led++;
i++;
}
}
if (!found)
return cmd_usage(cmdtp);
if (only_print) {
if (cmc_get_led_state(led))
printf("on\n");
else
printf("off\n");
return 0;
}
if (strcmp(argv[2], "on") == 0)
cmc_set_led_state(led, 1);
else
cmc_set_led_state(led, 0);
return 0;
}
U_BOOT_CMD(led, 3, 1, do_led,
"switch on/off board led",
"[name] [on/off]"
);
#ifdef CONFIG_HW_WATCHDOG
void hw_watchdog_reset(void)
{
davinci_hw_watchdog_reset();
}
#endif
#if defined(CONFIG_POST)
void arch_memory_failure_handle(void)
{
struct davinci_gpio *gpio = davinci_gpio_bank01;
int state = 1;
/*
* if memor< failure blink with the LED 1,2 and 3
* as we running from flash, we cannot use the gpio
* api here, so access the gpio pin direct through
* the gpio register.
*/
while (1) {
if (state) {
clrbits_le32(&gpio->out_data, 0x80000006);
state = 0;
} else {
setbits_le32(&gpio->out_data, 0x80000006);
state = 1;
}
udelay(500);
}
}
#endif
#if defined(CONFIG_BOOTCOUNT_LIMIT)
void bootcount_store(ulong a)
{
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
/*
* write RTC kick register to enable write
* for RTC Scratch registers. Cratch0 and 1 are
* used for bootcount values.
*/
out_be32(&reg->kick0r, RTC_KICK0R_WE);
out_be32(&reg->kick1r, RTC_KICK1R_WE);
out_be32(&reg->scratch0, a);
out_be32(&reg->scratch1, BOOTCOUNT_MAGIC);
}
ulong bootcount_load(void)
{
struct davinci_rtc *reg =
(struct davinci_rtc *)CONFIG_SYS_BOOTCOUNT_ADDR;
if (in_be32(&reg->scratch1) != BOOTCOUNT_MAGIC)
return 0;
else
return in_be32(&reg->scratch0);
}
#endif
void board_gpio_init(void)
{
struct davinci_gpio *gpio = davinci_gpio_bank01;
/*
* Power on required peripherals
* ARM does not have access by default to PSC0 and PSC1
* assuming here that the DSP bootloader has set the IOPU
* such that PSC access is available to ARM
*/
if (da8xx_configure_lpsc_items(lpsc, ARRAY_SIZE(lpsc)))
return;
/*
* set LED (gpio Interface not usable here)
* set LED pins to output and state 0
*/
clrbits_le32(&gpio->dir, 0x8000407e);