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u-boot/board/overo/overo.c
Heiko Schocher 17fa032671 serial, ns16550: bugfix: ns16550 fifo not enabled 
commit: 65f83802b7 "serial: 16550: Add getfcr accessor"
breaks u-boot commandline working with long commands
sending to the board.

Since the above patch, you have to setup the fcr register.

For board/archs which enable OF_PLATDATA, the new field
fcr in struct ns16550_platdata is not filled with a
default value ...

This leads in not setting up the uarts fifo, which ends
in problems, when you send long commands to u-boots
commandline.

Detected this issue with automated tbot tests on am335x
based shc board.

The error does not popup, if you type commands. You need
to copy&paste a long command to u-boots commandshell
(or send a long command with tbot)

Possible boards/plattforms with problems:
./arch/arm/cpu/arm926ejs/lpc32xx/devices.c
./arch/arm/mach-tegra/board.c
./board/overo/overo.c
./board/quipos/cairo/cairo.c
./board/logicpd/omap3som/omap3logic.c
./board/logicpd/zoom1/zoom1.c
./board/timll/devkit8000/devkit8000.c
./board/lg/sniper/sniper.c
./board/ti/beagle/beagle.c
./drivers/serial/serial_rockchip.c

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Tested-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-01-20 09:15:19 -05:00

423 lines
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/*
* Maintainer : Steve Sakoman <steve@sakoman.com>
*
* Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
* Richard Woodruff <r-woodruff2@ti.com>
* Syed Mohammed Khasim <khasim@ti.com>
* Sunil Kumar <sunilsaini05@gmail.com>
* Shashi Ranjan <shashiranjanmca05@gmail.com>
*
* (C) Copyright 2004-2008
* Texas Instruments, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <ns16550.h>
#include <netdev.h>
#include <twl4030.h>
#include <linux/mtd/nand.h>
#include <asm/io.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/mux.h>
#include <asm/arch/mem.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <asm/mach-types.h>
#include "overo.h"
#ifdef CONFIG_USB_EHCI
#include <usb.h>
#include <asm/ehci-omap.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
#define TWL4030_I2C_BUS 0
#define EXPANSION_EEPROM_I2C_BUS 2
#define EXPANSION_EEPROM_I2C_ADDRESS 0x51
#define GUMSTIX_EMPTY_EEPROM 0x0
#define GUMSTIX_SUMMIT 0x01000200
#define GUMSTIX_TOBI 0x02000200
#define GUMSTIX_TOBI_DUO 0x03000200
#define GUMSTIX_PALO35 0x04000200
#define GUMSTIX_PALO43 0x05000200
#define GUMSTIX_CHESTNUT43 0x06000200
#define GUMSTIX_PINTO 0x07000200
#define GUMSTIX_GALLOP43 0x08000200
#define GUMSTIX_ALTO35 0x09000200
#define GUMSTIX_STAGECOACH 0x0A000200
#define GUMSTIX_THUMBO 0x0B000200
#define GUMSTIX_TURTLECORE 0x0C000200
#define GUMSTIX_ARBOR43C 0x0D000200
#define ETTUS_USRP_E 0x01000300
#define GUMSTIX_NO_EEPROM 0xffffffff
static struct {
unsigned int device_vendor;
unsigned char revision;
unsigned char content;
char fab_revision[8];
char env_var[16];
char env_setting[64];
} expansion_config = {0x0};
static const struct ns16550_platdata overo_serial = {
.base = OMAP34XX_UART3,
.reg_shift = 2,
.clock = V_NS16550_CLK,
.fcr = UART_FCR_DEFVAL,
};
U_BOOT_DEVICE(overo_uart) = {
"ns16550_serial",
&overo_serial
};
/*
* Routine: get_sdio2_config
* Description: Return information about the wifi module connection
* Returns 0 if the module connects though a level translator
* Returns 1 if the module connects directly
*/
int get_sdio2_config(void)
{
int sdio_direct;
if (!gpio_request(130, "") && !gpio_request(139, "")) {
gpio_direction_output(130, 0);
gpio_direction_input(139);
sdio_direct = 1;
gpio_set_value(130, 0);
if (gpio_get_value(139) == 0) {
gpio_set_value(130, 1);
if (gpio_get_value(139) == 1)
sdio_direct = 0;
}
gpio_direction_input(130);
} else {
puts("Error: unable to acquire sdio2 clk GPIOs\n");
sdio_direct = -1;
}
return sdio_direct;
}
/*
* Routine: get_expansion_id
* Description: This function checks for expansion board by checking I2C
* bus 2 for the availability of an AT24C01B serial EEPROM.
* returns the device_vendor field from the EEPROM
*/
unsigned int get_expansion_id(void)
{
if (expansion_config.device_vendor != 0x0)
return expansion_config.device_vendor;
i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
/* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */
if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
i2c_set_bus_num(TWL4030_I2C_BUS);
return GUMSTIX_NO_EEPROM;
}
/* read configuration data */
i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
sizeof(expansion_config));
i2c_set_bus_num(TWL4030_I2C_BUS);
return expansion_config.device_vendor;
}
/*
* Routine: misc_init_r
* Description: Configure board specific parts
*/
int misc_init_r(void)
{
unsigned int expansion_id;
twl4030_power_init();
twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
printf("Board revision: %d\n", get_board_revision());
switch (get_sdio2_config()) {
case 0:
puts("Tranceiver detected on mmc2\n");
MUX_OVERO_SDIO2_TRANSCEIVER();
break;
case 1:
puts("Direct connection on mmc2\n");
MUX_OVERO_SDIO2_DIRECT();
break;
default:
puts("Unable to detect mmc2 connection type\n");
}
expansion_id = get_expansion_id();
switch (expansion_id) {
case GUMSTIX_SUMMIT:
printf("Recognized Summit expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
setenv("defaultdisplay", "dvi");
setenv("expansionname", "summit");
break;
case GUMSTIX_TOBI:
printf("Recognized Tobi expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
setenv("defaultdisplay", "dvi");
setenv("expansionname", "tobi");
break;
case GUMSTIX_TOBI_DUO:
printf("Recognized Tobi Duo expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
setenv("expansionname", "tobiduo");
break;
case GUMSTIX_PALO35:
printf("Recognized Palo35 expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
setenv("defaultdisplay", "lcd35");
setenv("expansionname", "palo35");
break;
case GUMSTIX_PALO43:
printf("Recognized Palo43 expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
setenv("defaultdisplay", "lcd43");
setenv("expansionname", "palo43");
break;
case GUMSTIX_CHESTNUT43:
printf("Recognized Chestnut43 expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
setenv("defaultdisplay", "lcd43");
setenv("expansionname", "chestnut43");
break;
case GUMSTIX_PINTO:
printf("Recognized Pinto expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
break;
case GUMSTIX_GALLOP43:
printf("Recognized Gallop43 expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
setenv("defaultdisplay", "lcd43");
setenv("expansionname", "gallop43");
break;
case GUMSTIX_ALTO35:
printf("Recognized Alto35 expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
MUX_ALTO35();
setenv("defaultdisplay", "lcd35");
setenv("expansionname", "alto35");
break;
case GUMSTIX_STAGECOACH:
printf("Recognized Stagecoach expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
break;
case GUMSTIX_THUMBO:
printf("Recognized Thumbo expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
break;
case GUMSTIX_TURTLECORE:
printf("Recognized Turtlecore expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
break;
case GUMSTIX_ARBOR43C:
printf("Recognized Arbor43C expansion board (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
MUX_ARBOR43C();
setenv("defaultdisplay", "lcd43");
setenv("expansionname", "arbor43c");
break;
case ETTUS_USRP_E:
printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
expansion_config.revision,
expansion_config.fab_revision);
MUX_GUMSTIX();
MUX_USRP_E();
setenv("defaultdisplay", "dvi");
break;
case GUMSTIX_NO_EEPROM:
case GUMSTIX_EMPTY_EEPROM:
puts("No or empty EEPROM on expansion board\n");
MUX_GUMSTIX();
setenv("expansionname", "tobi");
break;
default:
printf("Unrecognized expansion board 0x%08x\n", expansion_id);
break;
}
if (expansion_config.content == 1)
setenv(expansion_config.env_var, expansion_config.env_setting);
omap_die_id_display();
if (get_cpu_family() == CPU_OMAP34XX)
setenv("boardname", "overo");
else
setenv("boardname", "overo-storm");
return 0;
}
#if defined(CONFIG_CMD_NET)
/* GPMC definitions for LAN9221 chips on Tobi expansion boards */
static const u32 gpmc_lan_config[] = {
NET_LAN9221_GPMC_CONFIG1,
NET_LAN9221_GPMC_CONFIG2,
NET_LAN9221_GPMC_CONFIG3,
NET_LAN9221_GPMC_CONFIG4,
NET_LAN9221_GPMC_CONFIG5,
NET_LAN9221_GPMC_CONFIG6,
/*CONFIG7- computed as params */
};
/*
* Routine: setup_net_chip
* Description: Setting up the configuration GPMC registers specific to the
* Ethernet hardware.
*/
static void setup_net_chip(void)
{
struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
/* Enable off mode for NWE in PADCONF_GPMC_NWE register */
writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
/* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
/* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
&ctrl_base->gpmc_nadv_ale);
}
/*
* Routine: reset_net_chip
* Description: Reset the Ethernet hardware.
*/
static void reset_net_chip(void)
{
/* Make GPIO 64 as output pin and send a magic pulse through it */
if (!gpio_request(64, "")) {
gpio_direction_output(64, 0);
gpio_set_value(64, 1);
udelay(1);
gpio_set_value(64, 0);
udelay(1);
gpio_set_value(64, 1);
}
}
int board_eth_init(bd_t *bis)
{
unsigned int expansion_id;
int rc = 0;
#ifdef CONFIG_SMC911X
expansion_id = get_expansion_id();
switch (expansion_id) {
case GUMSTIX_TOBI_DUO:
/* second lan chip */
enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4],
0x2B000000, GPMC_SIZE_16M);
/* no break */
case GUMSTIX_TOBI:
case GUMSTIX_CHESTNUT43:
case GUMSTIX_STAGECOACH:
case GUMSTIX_NO_EEPROM:
case GUMSTIX_EMPTY_EEPROM:
/* first lan chip */
enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
0x2C000000, GPMC_SIZE_16M);
setup_net_chip();
reset_net_chip();
rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
break;
default:
break;
}
#endif
return rc;
}
#endif
#if defined(CONFIG_GENERIC_MMC)
int board_mmc_init(bd_t *bis)
{
return omap_mmc_init(0, 0, 0, -1, -1);
}
#endif
#if defined(CONFIG_GENERIC_MMC)
void board_mmc_power_init(void)
{
twl4030_power_mmc_init(0);
}
#endif
#if defined(CONFIG_USB_EHCI)
static struct omap_usbhs_board_data usbhs_bdata = {
.port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
};
#define GUMSTIX_GPIO_USBH_CPEN 168
int ehci_hcd_init(int index, enum usb_init_type init,
struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
/* Enable USB power */
if (!gpio_request(GUMSTIX_GPIO_USBH_CPEN, "usbh_cpen"))
gpio_direction_output(GUMSTIX_GPIO_USBH_CPEN, 1);
return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
}
int ehci_hcd_stop(void)
{
/* Disable USB power */
gpio_set_value(GUMSTIX_GPIO_USBH_CPEN, 0);
gpio_free(GUMSTIX_GPIO_USBH_CPEN);
return omap_ehci_hcd_stop();
}
#endif /* CONFIG_USB_EHCI */
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