/* * (C) Copyright 2010 Juergen Beisert - Pengutronix * * 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. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static struct mxs_mci_platform_data mci_pdata = { .caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED, .voltages = MMC_VDD_32_33 | MMC_VDD_33_34, /* fixed to 3.3 V */ }; #define GPIO_LCD_RESET 50 #define GPIO_LCD_BACKLIGHT 60 static void chumby_fb_enable(int enable) { gpio_direction_output(GPIO_LCD_RESET, enable); /* Give the display a chance to sync before we enable * the backlight to avoid flickering */ if (enable) mdelay(100); gpio_direction_output(GPIO_LCD_BACKLIGHT, enable); } static struct fb_videomode falconwing_vmode = { /* * Nanovision NMA35QV65-B2-K01 (directly connected) * Clock: 6.25 MHz * Syncs: high active, DE low active * Display area: 70.08 mm x 52.56 mm */ .name = "NMA35", .refresh = 60, .xres = 320, .yres = 240, .pixclock = KHZ2PICOS(6250), /* max. 10 MHz */ /* line lenght should be 64 µs */ .left_margin = 28, .hsync_len = 24, .right_margin = 28, /* frame rate should be 60 Hz */ .upper_margin = 8, .vsync_len = 4, .lower_margin = 8, .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, .vmode = FB_VMODE_NONINTERLACED, .flag = 0, }; #define MAX_FB_SIZE SZ_1M static struct imx_fb_platformdata fb_mode = { .mode_list = &falconwing_vmode, .mode_cnt = 1, /* the NMA35 is a 24 bit display, but only 18 bits are connected */ .ld_intf_width = STMLCDIF_18BIT, .enable = chumby_fb_enable, .fixed_screen = (void *)(0x40000000 + SZ_64M - MAX_FB_SIZE), .fixed_screen_size = MAX_FB_SIZE, }; static const uint32_t pad_setup[] = { /* may be not required as already done by the bootlet code */ #if 0 /* SDRAM data signals */ EMI_D15 | STRENGTH(0) | VE_2_5V, EMI_D14 | STRENGTH(0) | VE_2_5V, EMI_D13 | STRENGTH(0) | VE_2_5V, EMI_D12 | STRENGTH(0) | VE_2_5V, EMI_D11 | STRENGTH(0) | VE_2_5V, EMI_D10 | STRENGTH(0) | VE_2_5V, EMI_D9 | STRENGTH(0) | VE_2_5V, EMI_D8 | STRENGTH(0) | VE_2_5V, EMI_D7 | STRENGTH(0) | VE_2_5V, EMI_D6 | STRENGTH(0) | VE_2_5V, EMI_D5 | STRENGTH(0) | VE_2_5V, EMI_D4 | STRENGTH(0) | VE_2_5V, EMI_D3 | STRENGTH(0) | VE_2_5V, EMI_D2 | STRENGTH(0) | VE_2_5V, EMI_D1 | STRENGTH(0) | VE_2_5V, EMI_D0 | STRENGTH(0) | VE_2_5V, /* SDRAM data control signals */ EMI_DQM0 | STRENGTH(0) | VE_2_5V, /* LDM */ EMI_DQM1 | STRENGTH(0) | VE_2_5V, /* UDM */ /* SDRAM address signals */ EMI_A0 | STRENGTH(0) | VE_2_5V, EMI_A1 | STRENGTH(0) | VE_2_5V, EMI_A2 | STRENGTH(0) | VE_2_5V, EMI_A3 | STRENGTH(0) | VE_2_5V, EMI_A4 | STRENGTH(0) | VE_2_5V, EMI_A5 | STRENGTH(0) | VE_2_5V, EMI_A6 | STRENGTH(0) | VE_2_5V, EMI_A7 | STRENGTH(0) | VE_2_5V, EMI_A8 | STRENGTH(0) | VE_2_5V, EMI_A9 | STRENGTH(0) | VE_2_5V, EMI_A10 | STRENGTH(0) | VE_2_5V, EMI_A11 | STRENGTH(0) | VE_2_5V, EMI_A12 | STRENGTH(0) | VE_2_5V, /* SDRAM address control signals */ EMI_RASN | STRENGTH(0) | VE_2_5V, EMI_CASN | STRENGTH(0) | VE_2_5V, /* SDRAM control signals */ EMI_CE0N | STRENGTH(0) | VE_2_5V, EMI_CLK | STRENGTH(0) | VE_2_5V, EMI_CLKN | STRENGTH(0) | VE_2_5V, EMI_CKE | STRENGTH(0) | VE_2_5V, EMI_WEN | STRENGTH(0) | VE_2_5V, EMI_BA0 | STRENGTH(0) | VE_2_5V, EMI_BA1 | STRENGTH(0) | VE_2_5V, EMI_DQS0 | STRENGTH(0) | VE_2_5V, EMI_DQS1 | STRENGTH(0) | VE_2_5V, #endif /* debug port */ PWM1_DUART_TX | STRENGTH(S4MA), /* strength is TBD */ PWM0_DUART_RX | STRENGTH(S4MA), /* strength is TBD */ /* lcd */ LCD_VSYNC | STRENGTH(S12MA), LCD_HSYNC | STRENGTH(S12MA), LCD_ENABE | STRENGTH(S12MA), LCD_DOTCLOCK | STRENGTH(S12MA), LCD_D17 | STRENGTH(S12MA), LCD_D16 | STRENGTH(S12MA), LCD_D15 | STRENGTH(S12MA), LCD_D14 | STRENGTH(S12MA), LCD_D13 | STRENGTH(S12MA), LCD_D12 | STRENGTH(S12MA), LCD_D11 | STRENGTH(S12MA), LCD_D10 | STRENGTH(S12MA), LCD_D9 | STRENGTH(S12MA), LCD_D8 | STRENGTH(S12MA), LCD_D7 | STRENGTH(S12MA), LCD_D6 | STRENGTH(S12MA), LCD_D5 | STRENGTH(S12MA), LCD_D4 | STRENGTH(S12MA), LCD_D3 | STRENGTH(S12MA), LCD_D2 | STRENGTH(S12MA), LCD_D1 | STRENGTH(S12MA), LCD_D0 | STRENGTH(S12MA), /* LCD usage currently unknown */ LCD_CS, /* used as SPI SS */ LCD_RS, /* used as SPI CLK */ /* keep the display in reset state */ LCD_RESET_GPIO | STRENGTH(S4MA) | GPIO_OUT | GPIO_VALUE(0), LCD_WR, /* used as SPI MOSI */ /* I2C to the MMA7455L, KXTE9, AT24C08 (DCID), AT24C128B (ID EEPROM) and QN8005B */ I2C_SDA, I2C_CLK, /* Rotary decoder (external pull ups) */ ROTARYA, ROTARYB, /* the chumby bend (external pull up) */ PWM4_GPIO | GPIO_IN, /* backlight control, to be controled by PWM, here we only want to disable it */ PWM2_GPIO | GPIO_OUT | GPIO_VALUE(0), /* 1 enables, 0 disables the backlight */ /* USB hub reset (active low) */ AUART1_TX_GPIO | GPIO_OUT | GPIO_VALUE(0), /* USB power (active high) */ AUART1_CTS_GPIO | GPIO_OUT | GPIO_VALUE(0), /* Detecting if a display is connected (0 = display attached) (external pull up) */ AUART1_RTS_GPIO | GPIO_IN, /* disable the audio amplifier */ GPMI_D08_GPIO | GPIO_OUT | GPIO_VALUE(0), /* Head Phone detection (FIXME what level when plugged in) (external pull up) */ GPMI_D11_GPIO | GPIO_IN, #if 0 /* Enable the local 5V (FIXME what to do when the bootloader runs) */ GPMI_D12_GPIO | GPIO_OUT | GPIO_VALUE(1), #endif /* not used pins */ GPMI_D09_GPIO | GPIO_IN | PULLUP(1), GPMI_D10_GPIO | GPIO_IN | PULLUP(1), GPMI_D13_GPIO | GPIO_IN | PULLUP(1), /* unknown. Not connected to anything than test pin J113 */ GPMI_D14_GPIO | GPIO_IN | PULLUP(1), /* unknown. Not connected to anything than test pin J114 */ GPMI_D15_GPIO | GPIO_IN | PULLUP(1), /* NAND controller (Note: There is no NAND device on the board) */ GPMI_D00 | PULLUP(1), GPMI_D01 | PULLUP(1), GPMI_D02 | PULLUP(1), GPMI_D03 | PULLUP(1), GPMI_D04 | PULLUP(1), GPMI_D05 | PULLUP(1), GPMI_D06 | PULLUP(1), GPMI_D07 | PULLUP(1), GPMI_CE0N, GPMI_RDY0 | PULLUP(1), GPMI_WRN, /* kernel tries here with 12 mA */ GPMI_RDN, /* kernel tries here with 12 mA */ GPMI_WPM, /* kernel tries here with 12 mA */ GPMI_CLE, GPMI_ALE, /* SD card interface */ SSP1_DATA0 | PULLUP(1), /* available at J201 */ SSP1_DATA1 | PULLUP(1), /* available at J200 */ SSP1_DATA2 | PULLUP(1), /* available at J205 */ SSP1_DATA3 | PULLUP(1), /* available at J204 */ SSP1_SCK, /* available at J202 */ SSP1_CMD | PULLUP(1), /* available at J203 */ SSP1_DETECT | PULLUP(1), /* only connected to test pin J115 */ /* other not used pins */ GPMI_CE1N_GPIO | GPIO_IN | PULLUP(1), GPMI_CE2N_GPIO | GPIO_IN | PULLUP(1), GPMI_RDY1_GPIO | GPIO_IN | PULLUP(1), GPMI_RDY2_GPIO | GPIO_IN | PULLUP(1), GPMI_RDY3_GPIO | GPIO_IN | PULLUP(1), }; static int falconwing_mem_init(void) { arm_add_mem_device("ram0", IMX_MEMORY_BASE, 64 * 1024 * 1024); return 0; } mem_initcall(falconwing_mem_init); #define GPIO_USB_HUB_RESET 29 #define GPIO_USB_HUB_POWER 26 static void falconwing_init_usb(void) { /* power USB hub */ gpio_direction_output(GPIO_USB_HUB_POWER, 1); mdelay(1); /* bring USB hub out of reset */ gpio_direction_output(GPIO_USB_HUB_RESET, 1); imx23_usb_phy_enable(); add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, IMX_USB_BASE, NULL); } static int falconwing_devices_init(void) { int i, rc; /* initizalize gpios */ for (i = 0; i < ARRAY_SIZE(pad_setup); i++) imx_gpio_mode(pad_setup[i]); add_generic_device("mxs_mci", 0, NULL, IMX_SSP1_BASE, 0x2000, IORESOURCE_MEM, &mci_pdata); add_generic_device("stmfb", 0, NULL, IMX_FB_BASE, 4096, IORESOURCE_MEM, &fb_mode); falconwing_init_usb(); armlinux_set_bootparams((void *)IMX_MEMORY_BASE + 0x100); armlinux_set_architecture(MACH_TYPE_CHUMBY); rc = envfs_register_partition("disk0", 1); if (rc != 0) printf("Cannot create the 'env0' persistent environment storage (%d)\n", rc); return 0; } device_initcall(falconwing_devices_init); static int falconwing_console_init(void) { barebox_set_model("Chumby Falconwing"); barebox_set_hostname("falconwing"); add_generic_device("stm_serial", 0, NULL, IMX_DBGUART_BASE, 8192, IORESOURCE_MEM, NULL); return 0; } console_initcall(falconwing_console_init); /** @page chumbyone Chumby Industrie's Falconwing This device is also known as "chumby one" (http://www.chumby.com/) This CPU card is based on a Freescale i.MX23 CPU. The card is shipped with: - 64 MiB synchronous dynamic RAM (DDR type) Memory layout when @b barebox is running: - 0x40000000 start of SDRAM - 0x40000100 start of kernel's boot parameters - below malloc area: stack area - below barebox: malloc area - 0x42000000 start of @b barebox @section get_falconwing_binary How to get the bootloader binary image: Using the default configuration: @verbatim make ARCH=arm chumbyone_defconfig @endverbatim Build the bootloader binary image: @verbatim make ARCH=arm CROSS_COMPILE=armv5compiler @endverbatim @note replace the armv5compiler with your ARM v5 cross compiler. @section setup_falconwing How to prepare an MCI card to boot the "chumby one" with barebox - Create four primary partitions on the MCI card - the first one for the bootlets (about 256 kiB) - the second one for the persistant environment (size is up to you, at least 256k) - the third one for the kernel (2 MiB ... 4 MiB in size) - the 4th one for the root filesystem which can fill the rest of the available space - Mark the first partition with the partition ID "53" and copy the bootlets into this partition (currently not part of @b barebox!). - Copy the default @b barebox environment into the second partition (no filesystem required). - Copy the kernel into the third partition (no filesystem required). - Create the root filesystem in the 4th partition. You may copy an image into this partition or you can do it in the classic way: mkfs on it, mount it and copy all required data and programs into it. @section gpio_falconwing Available GPIOs The Falconwing uses some GPIOs to control various features. With the regular GPIO commands these features can be controlled at @a barebox's runtime.
No Direction Function Reset Set
8 Output Switch Audio Amplifier Off On
11 Input Head Phone Detection TBD TBD
14 Input Unused (J113) User User
15 Input Unused (J114) User User
26 Output USB Power TBD TBD
27 Input Display Connected Display
Attached		 Display
Disconnected
29 Output USB HUB Reset TBD TBD
50 Output Display Reset Display
Reset		 Display
Running
60 Output Display Backlight Backlight
Off		 Backlight
On (100 %)
62 Input Bend Not pressed Pressed
*/