/*
- * Copyright (C) 2011 Lothar Waßmann <LW@KARO-electronics.de>
- * based on: board/freesclae/mx28_evk.c (C) 2010 Freescale Semiconductor, Inc.
+ * Copyright (C) 2011-2013 Lothar Waßmann <LW@KARO-electronics.de>
+ * based on: board/freescale/mx28_evk.c (C) 2010 Freescale Semiconductor, Inc.
*
* 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.
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
#include <lcd.h>
#include <netdev.h>
#include <mmc.h>
+#include <mxcfb.h>
#include <linux/list.h>
#include <linux/fb.h>
#include <asm/io.h>
#define TX28_LED_GPIO MX28_PAD_ENET0_RXD3__GPIO_4_10
+#define STK5_CAN_XCVR_GPIO MX28_PAD_LCD_D00__GPIO_1_0
+
static const struct gpio tx28_gpios[] = {
- { TX28_USBH_VBUSEN_GPIO, GPIOF_OUTPUT_INIT_LOW, "USBH VBUSEN", },
- { TX28_USBH_OC_GPIO, GPIOF_INPUT, "USBH OC", },
- { TX28_USBOTG_VBUSEN_GPIO, GPIOF_OUTPUT_INIT_LOW, "USBOTG VBUSEN", },
- { TX28_USBOTG_OC_GPIO, GPIOF_INPUT, "USBOTG OC", },
- { TX28_USBOTG_ID_GPIO, GPIOF_INPUT, "USBOTG ID", },
+ { TX28_USBH_VBUSEN_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "USBH VBUSEN", },
+ { TX28_USBH_OC_GPIO, GPIOFLAG_INPUT, "USBH OC", },
+ { TX28_USBOTG_VBUSEN_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "USBOTG VBUSEN", },
+ { TX28_USBOTG_OC_GPIO, GPIOFLAG_INPUT, "USBOTG OC", },
+ { TX28_USBOTG_ID_GPIO, GPIOFLAG_INPUT, "USBOTG ID", },
};
static const iomux_cfg_t tx28_pads[] = {
/* provide at least _some_ sort of randomness */
#define MAX_LOOPS 100
-static u32 random;
+static u32 random __attribute__((section("data")));
static inline void random_init(void)
{
int i;
for (i = 0; i < MAX_LOOPS; i++) {
- unsigned int usec = readl(&digctl_regs->hw_digctl_microseconds);
+ u32 hclk = readl(&digctl_regs->hw_digctl_hclkcount);
+ u32 entropy = readl(&digctl_regs->hw_digctl_entropy);
+ u32 usec = readl(&digctl_regs->hw_digctl_microseconds);
- seed = get_timer(usec + random + seed);
+ seed = get_timer(hclk ^ entropy ^ usec ^ random ^ seed);
srand(seed);
random = rand();
}
}
+#define RTC_PERSISTENT0_CLK32_MASK (RTC_PERSISTENT0_CLOCKSOURCE | \
+ RTC_PERSISTENT0_XTAL32KHZ_PWRUP)
+static u32 boot_cause __attribute__((section("data")));
+
int board_early_init_f(void)
{
+ struct mxs_rtc_regs *rtc_regs = (void *)MXS_RTC_BASE;
+ u32 rtc_stat;
+ int timeout = 5000;
+
random_init();
/* IO0 clock at 480MHz */
gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
mxs_iomux_setup_multiple_pads(tx28_pads, ARRAY_SIZE(tx28_pads));
+
+ while ((rtc_stat = readl(&rtc_regs->hw_rtc_stat)) &
+ RTC_STAT_STALE_REGS_PERSISTENT0) {
+ if (timeout-- < 0)
+ return 1;
+ udelay(1);
+ }
+ boot_cause = readl(&rtc_regs->hw_rtc_persistent0);
+ if ((boot_cause & RTC_PERSISTENT0_CLK32_MASK) !=
+ RTC_PERSISTENT0_CLK32_MASK) {
+ if (boot_cause & RTC_PERSISTENT0_CLOCKSOURCE)
+ goto rtc_err;
+ writel(RTC_PERSISTENT0_CLK32_MASK,
+ &rtc_regs->hw_rtc_persistent0_set);
+ }
return 0;
+
+rtc_err:
+ serial_puts("Inconsistent value in RTC_PERSISTENT0 register; power-on-reset required\n");
+ return 1;
}
int board_init(void)
{
+ if (ctrlc())
+ printf("CTRL-C detected; safeboot enabled\n");
+
/* Address of boot parameters */
#ifdef CONFIG_OF_LIBFDT
gd->bd->bi_arch_number = -1;
#ifdef CONFIG_FEC_MXC
#ifdef CONFIG_GET_FEC_MAC_ADDR_FROM_IIM
-#ifdef CONFIG_FEC_MXC_MULTI
+#ifndef CONFIG_TX28_S
#define FEC_MAX_IDX 1
#else
#define FEC_MAX_IDX 0
val = readl(&cust[index * 8 + i]);
mac[i] = val >> shift;
}
- if (!is_valid_ether_addr(mac))
+ if (!is_valid_ethaddr(mac)) {
+ if (index == 0)
+ printf("No valid MAC address programmed\n");
return 0;
+ }
- if (index == 0)
+ if (index == 0) {
+ printf("MAC addr from fuse: %pM\n", mac);
snprintf(env_name, sizeof(env_name), "ethaddr");
- else
+ } else {
snprintf(env_name, sizeof(env_name), "eth%daddr", index);
-
+ }
eth_setenv_enetaddr(env_name, mac);
return 0;
}
+
+static inline int tx28_fec1_enabled(void)
+{
+ const char *status;
+ int off;
+
+ if (!gd->fdt_blob)
+ return 0;
+
+ off = fdt_path_offset(gd->fdt_blob, "ethernet1");
+ if (off < 0)
+ return 0;
+
+ status = fdt_getprop(gd->fdt_blob, off, "status", NULL);
+ return status && (strcmp(status, "okay") == 0);
+}
+
+static void tx28_init_mac(void)
+{
+ int ret;
+
+ ret = fec_get_mac_addr(0);
+ if (ret < 0) {
+ printf("Failed to read FEC0 MAC address from OCOTP\n");
+ return;
+ }
+#ifdef CONFIG_TX28_S
+ if (tx28_fec1_enabled()) {
+ ret = fec_get_mac_addr(1);
+ if (ret < 0) {
+ printf("Failed to read FEC1 MAC address from OCOTP\n");
+ return;
+ }
+ }
+#endif
+}
+#else
+static inline void tx28_init_mac(void)
+{
+}
#endif /* CONFIG_GET_FEC_MAC_ADDR_FROM_IIM */
static const iomux_cfg_t tx28_fec_pads[] = {
return ret;
}
- ret = fec_get_mac_addr(0);
- if (ret < 0) {
- printf("Failed to read FEC0 MAC address from OCOTP\n");
- return ret;
- }
-#ifdef CONFIG_FEC_MXC_MULTI
+#ifndef CONFIG_TX28_S
if (getenv("ethaddr")) {
ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
if (ret) {
}
}
- ret = fec_get_mac_addr(1);
- if (ret < 0) {
- printf("Failed to read FEC1 MAC address from OCOTP\n");
- return ret;
- }
if (getenv("eth1addr")) {
ret = fecmxc_initialize_multi(bis, 1, 1, MXS_ENET1_BASE);
if (ret) {
return ret;
}
}
- return 0;
#else
if (getenv("ethaddr")) {
ret = fecmxc_initialize(bis);
+ if (ret) {
+ printf("FEC MXS: Unable to init FEC\n");
+ return ret;
+ }
}
- return ret;
#endif
+ return 0;
+}
+#else
+static inline void tx28_init_mac(void)
+{
}
#endif /* CONFIG_FEC_MXC */
.vl_col = 1600,
.vl_row = 1200,
- .vl_bpix = LCD_COLOR24, /* Bits per pixel, 0: 1bpp, 1: 2bpp, 2: 4bpp, 3: 8bpp ... */
+ .vl_bpix = LCD_COLOR32, /* Bits per pixel, 0: 1bpp, 1: 2bpp, 2: 4bpp, 3: 8bpp ... */
.cmap = tx28_cmap,
};
.upper_margin = 2,
.vsync_len = 10,
.lower_margin = 2,
+ .sync = FB_SYNC_CLK_LAT_FALL,
.vmode = FB_VMODE_NONINTERLACED,
},
{
};
static int lcd_enabled = 1;
+static int lcd_bl_polarity;
+
+static int lcd_backlight_polarity(void)
+{
+ return lcd_bl_polarity;
+}
void lcd_enable(void)
{
udelay(100);
gpio_set_value(TX28_LCD_RST_GPIO, 1);
udelay(300000);
- gpio_set_value(TX28_LCD_BACKLIGHT_GPIO, 0);
+ gpio_set_value(TX28_LCD_BACKLIGHT_GPIO,
+ lcd_backlight_polarity());
}
}
{
if (lcd_enabled) {
debug("Switching LCD off\n");
- gpio_set_value(TX28_LCD_BACKLIGHT_GPIO, 1);
+ gpio_set_value(TX28_LCD_BACKLIGHT_GPIO,
+ !lcd_backlight_polarity());
gpio_set_value(TX28_LCD_RST_GPIO, 0);
gpio_set_value(TX28_LCD_PWR_GPIO, 0);
}
MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
MX28_PAD_LCD_CS__LCD_CS | MXS_PAD_CTRL,
- MX28_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
- MX28_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
- MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MXS_PAD_CTRL,
};
static const struct gpio stk5_lcd_gpios[] = {
- { TX28_LCD_RST_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD RESET", },
- { TX28_LCD_PWR_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD POWER", },
- { TX28_LCD_BACKLIGHT_GPIO, GPIOF_OUTPUT_INIT_HIGH, "LCD BACKLIGHT", },
+ { TX28_LCD_RST_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "LCD RESET", },
+ { TX28_LCD_PWR_GPIO, GPIOFLAG_OUTPUT_INIT_LOW, "LCD POWER", },
+ { TX28_LCD_BACKLIGHT_GPIO, GPIOFLAG_OUTPUT_INIT_HIGH, "LCD BACKLIGHT", },
};
extern void video_hw_init(void *lcdbase);
void lcd_ctrl_init(void *lcdbase)
{
int color_depth = 24;
- char *vm;
+ const char *video_mode = karo_get_vmode(getenv("video_mode"));
+ const char *vm;
unsigned long val;
int refresh = 60;
struct fb_videomode *p = tx28_fb_modes;
return;
}
- if (tstc()) {
+ if (had_ctrlc()) {
debug("Disabling LCD\n");
lcd_enabled = 0;
+ setenv("splashimage", NULL);
return;
}
karo_fdt_move_fdt();
+ lcd_bl_polarity = karo_fdt_get_backlight_polarity(working_fdt);
- vm = getenv("video_mode");
- if (vm == NULL) {
+ if (video_mode == NULL) {
debug("Disabling LCD\n");
lcd_enabled = 0;
return;
}
- if (karo_fdt_get_fb_mode(working_fdt, vm, &fb_mode) == 0) {
+ vm = video_mode;
+ if (karo_fdt_get_fb_mode(working_fdt, video_mode, &fb_mode) == 0) {
p = &fb_mode;
debug("Using video mode from FDT\n");
vm += strlen(vm);
+ if (fb_mode.xres > panel_info.vl_col ||
+ fb_mode.yres > panel_info.vl_row) {
+ printf("video resolution from DT: %dx%d exceeds hardware limits: %dx%d\n",
+ fb_mode.xres, fb_mode.yres,
+ panel_info.vl_col, panel_info.vl_row);
+ lcd_enabled = 0;
+ return;
+ }
}
if (p->name != NULL)
debug("Trying compiled-in video modes\n");
if (val > panel_info.vl_col)
val = panel_info.vl_col;
p->xres = val;
+ panel_info.vl_col = val;
xres_set = 1;
} else if (!yres_set) {
if (val > panel_info.vl_row)
val = panel_info.vl_row;
p->yres = val;
+ panel_info.vl_row = val;
yres_set = 1;
} else if (!bpp_set) {
switch (val) {
printf("\n");
return;
}
+ if (p->xres > panel_info.vl_col || p->yres > panel_info.vl_row) {
+ printf("video resolution: %dx%d exceeds hardware limits: %dx%d\n",
+ p->xres, p->yres, panel_info.vl_col, panel_info.vl_row);
+ lcd_enabled = 0;
+ return;
+ }
+ panel_info.vl_col = p->xres;
+ panel_info.vl_row = p->yres;
+
+ switch (color_depth) {
+ case 8:
+ panel_info.vl_bpix = LCD_COLOR8;
+ break;
+ case 16:
+ panel_info.vl_bpix = LCD_COLOR16;
+ break;
+ default:
+ panel_info.vl_bpix = LCD_COLOR32;
+ }
+
p->pixclock = KHZ2PICOS(refresh *
(p->xres + p->left_margin + p->right_margin + p->hsync_len) *
(p->yres + p->upper_margin + p->lower_margin + p->vsync_len) /
debug("Pixel clock set to %lu.%03lu MHz\n",
PICOS2KHZ(p->pixclock) / 1000, PICOS2KHZ(p->pixclock) % 1000);
+ if (p != &fb_mode) {
+ int ret;
+
+ debug("Creating new display-timing node from '%s'\n",
+ video_mode);
+ ret = karo_fdt_create_fb_mode(working_fdt, video_mode, p);
+ if (ret)
+ printf("Failed to create new display-timing node from '%s': %d\n",
+ video_mode, ret);
+ }
+
gpio_request_array(stk5_lcd_gpios, ARRAY_SIZE(stk5_lcd_gpios));
mxs_iomux_setup_multiple_pads(stk5_lcd_pads,
ARRAY_SIZE(stk5_lcd_pads));
color_depth, refresh);
if (karo_load_splashimage(0) == 0) {
+ char vmode[128];
+
+ /* setup env variable for mxsfb display driver */
+ snprintf(vmode, sizeof(vmode),
+ "x:%d,y:%d,le:%d,ri:%d,up:%d,lo:%d,hs:%d,vs:%d,sync:%d,pclk:%d,depth:%d",
+ p->xres, p->yres, p->left_margin, p->right_margin,
+ p->upper_margin, p->lower_margin, p->hsync_len,
+ p->vsync_len, p->sync, p->pixclock, color_depth);
+ setenv("videomode", vmode);
+
debug("Initializing LCD controller\n");
video_hw_init(lcdbase);
+ setenv("videomode", NULL);
} else {
debug("Skipping initialization of LCD controller\n");
}
stk5_board_init();
/* init flexcan transceiver enable GPIO */
- gpio_request_one(MXS_GPIO_NR(0, 1), GPIOF_OUTPUT_INIT_HIGH,
+ gpio_request_one(STK5_CAN_XCVR_GPIO, GPIOFLAG_OUTPUT_INIT_HIGH,
"Flexcan Transceiver");
- mxs_iomux_setup_pad(MX28_PAD_LCD_D00__GPIO_1_0);
+ mxs_iomux_setup_pad(STK5_CAN_XCVR_GPIO);
}
int board_late_init(void)
{
+ int ret = 0;
const char *baseboard;
- karo_fdt_move_fdt();
+ env_cleanup();
+
+ if (had_ctrlc())
+ setenv_ulong("safeboot", 1);
+ else
+ karo_fdt_move_fdt();
baseboard = getenv("baseboard");
if (!baseboard)
- return 0;
+ goto exit;
+
+ printf("Baseboard: %s\n", baseboard);
if (strncmp(baseboard, "stk5", 4) == 0) {
- printf("Baseboard: %s\n", baseboard);
if ((strlen(baseboard) == 4) ||
strcmp(baseboard, "stk5-v3") == 0) {
stk5v3_board_init();
} else {
printf("WARNING: Unsupported baseboard: '%s'\n",
baseboard);
- return -EINVAL;
+ ret = -EINVAL;
}
- return 0;
+exit:
+ tx28_init_mac();
+ clear_ctrlc();
+ return ret;
+}
+
+#define BOOT_CAUSE_MASK (RTC_PERSISTENT0_EXTERNAL_RESET | \
+ RTC_PERSISTENT0_ALARM_WAKE | \
+ RTC_PERSISTENT0_THERMAL_RESET)
+
+static void thermal_init(void)
+{
+ struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
+ struct mxs_clkctrl_regs *clkctrl_regs = (void *)MXS_CLKCTRL_BASE;
+
+ writel(POWER_THERMAL_LOW_POWER | POWER_THERMAL_OFFSET_ADJ_ENABLE |
+ POWER_THERMAL_OFFSET_ADJ_OFFSET(3),
+ &power_regs->hw_power_thermal);
+
+ writel(CLKCTRL_RESET_EXTERNAL_RESET_ENABLE |
+ CLKCTRL_RESET_THERMAL_RESET_ENABLE,
+ &clkctrl_regs->hw_clkctrl_reset);
}
int checkboard(void)
{
- printf("Board: Ka-Ro TX28-4%sxx\n", TX28_MOD_SUFFIX);
+ struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
+ u32 pwr_sts = readl(&power_regs->hw_power_sts);
+ u32 pwrup_src = (pwr_sts >> 24) & 0x3f;
+ const char *dlm = "";
+
+ printf("Board: Ka-Ro TX28-4%sx%d\n", TX28_MOD_SUFFIX,
+ CONFIG_SYS_SDRAM_SIZE / SZ_128M +
+ CONFIG_SYS_NAND_BLOCKS / 2048 * 2);
+
+ printf("POWERUP Source: ");
+ if (pwrup_src & (3 << 0)) {
+ printf("%sPSWITCH %s voltage", dlm,
+ pwrup_src & (1 << 1) ? "HIGH" : "MID");
+ dlm = " | ";
+ }
+ if (pwrup_src & (1 << 4)) {
+ printf("%sRTC", dlm);
+ dlm = " | ";
+ }
+ if (pwrup_src & (1 << 5)) {
+ printf("%s5V", dlm);
+ dlm = " | ";
+ }
+ printf("\n");
+
+ if (boot_cause & BOOT_CAUSE_MASK) {
+ dlm="";
+ printf("Last boot cause: ");
+ if (boot_cause & RTC_PERSISTENT0_EXTERNAL_RESET) {
+ printf("%sEXTERNAL", dlm);
+ dlm = " | ";
+ }
+ if (boot_cause & RTC_PERSISTENT0_THERMAL_RESET) {
+ printf("%sTHERMAL", dlm);
+ dlm = " | ";
+ }
+ if (*dlm != '\0')
+ printf(" RESET");
+ if (boot_cause & RTC_PERSISTENT0_ALARM_WAKE) {
+ printf("%sALARM WAKE", dlm);
+ dlm = " | ";
+ }
+ printf("\n");
+ }
+
+ while (pwr_sts & POWER_STS_THERMAL_WARNING) {
+ static int first = 1;
+
+ if (first) {
+ printf("CPU too hot to boot\n");
+ first = 0;
+ }
+ if (tstc())
+ break;
+ pwr_sts = readl(&power_regs->hw_power_sts);
+ }
+
+ if (!(boot_cause & RTC_PERSISTENT0_THERMAL_RESET))
+ thermal_init();
+
return 0;
}
#ifdef CONFIG_FDT_FIXUP_PARTITIONS
#include <jffs2/jffs2.h>
#include <mtd_node.h>
-struct node_info tx28_nand_nodes[] = {
- { "gpmi-nand", MTD_DEV_TYPE_NAND, },
+static struct node_info tx28_nand_nodes[] = {
+ { "fsl,imx28-gpmi-nand", MTD_DEV_TYPE_NAND, },
};
#else
#define fdt_fixup_mtdparts(b,n,c) do { } while (0)
#endif
-static void tx28_fixup_flexcan(void *blob)
-{
- karo_fdt_del_prop(blob, "fsl,imx28-flexcan", 0x80032000, "transceiver-switch");
- karo_fdt_del_prop(blob, "fsl,imx28-flexcan", 0x80034000, "transceiver-switch");
-}
-
-static void tx28_fixup_fec(void *blob)
-{
- karo_fdt_enable_node(blob, "ethernet1", 0);
-}
+static const char *tx28_touchpanels[] = {
+ "ti,tsc2007",
+ "edt,edt-ft5x06",
+ "fsl,imx28-lradc",
+};
-void ft_board_setup(void *blob, bd_t *bd)
+int ft_board_setup(void *blob, bd_t *bd)
{
const char *baseboard = getenv("baseboard");
+ int stk5_v5 = baseboard != NULL && (strcmp(baseboard, "stk5-v5") == 0);
+ const char *video_mode = karo_get_vmode(getenv("video_mode"));
+ int ret;
+ ret = fdt_increase_size(blob, 4096);
+ if (ret) {
+ printf("Failed to increase FDT size: %s\n", fdt_strerror(ret));
+ return ret;
+ }
#ifdef CONFIG_TX28_S
/* TX28-41xx (aka TX28S) has no external RTC
* and no I2C GPIO extender
karo_fdt_remove_node(blob, "ds1339");
karo_fdt_remove_node(blob, "gpio5");
#endif
- if (baseboard != NULL && strcmp(baseboard, "stk5-v5") == 0) {
- karo_fdt_remove_node(blob, "stk5led");
- } else {
- tx28_fixup_flexcan(blob);
- tx28_fixup_fec(blob);
- }
-
- if (baseboard != NULL && strcmp(baseboard, "stk5-v3") == 0) {
- const char *otg_mode = getenv("otg_mode");
-
- if (otg_mode && (strcmp(otg_mode, "device") == 0 ||
- strcmp(otg_mode, "gadget") == 0))
- karo_fdt_enable_node(blob, "can1", 0);
- }
+ if (stk5_v5)
+ karo_fdt_enable_node(blob, "stk5led", 0);
fdt_fixup_mtdparts(blob, tx28_nand_nodes, ARRAY_SIZE(tx28_nand_nodes));
- fdt_fixup_ethernet(blob);
- karo_fdt_fixup_touchpanel(blob);
- karo_fdt_fixup_usb_otg(blob, "usbotg", "fsl,usbphy");
- karo_fdt_update_fb_mode(blob, getenv("video_mode"));
+ karo_fdt_fixup_touchpanel(blob, tx28_touchpanels,
+ ARRAY_SIZE(tx28_touchpanels));
+ karo_fdt_fixup_usb_otg(blob, "usbotg", "fsl,usbphy", "vbus-supply");
+ karo_fdt_fixup_flexcan(blob, stk5_v5);
+ karo_fdt_update_fb_mode(blob, video_mode);
+
+ return 0;
}
-#endif
+#endif /* CONFIG_OF_BOARD_SETUP */
projects / karo-tx-uboot.git / blobdiff