375 lines
9.0 KiB
C
375 lines
9.0 KiB
C
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/*
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* arch/sh/boards/st/mach-hdk7111/setup.c
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*
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* Copyright (C) 2011 STMicroelectronics Limited
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* Author: John Boddie (john.boddie@st.com)
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*
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* May be copied or modified under the terms of the GNU General Public
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* License. See linux/COPYING for more information.
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*
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* STMicroelectronics STx7111 HDK board support.
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*/
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/leds.h>
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#include <linux/lirc.h>
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#include <linux/gpio.h>
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#include <linux/phy.h>
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#include <linux/input.h>
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#include <linux/stm/platform.h>
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#include <linux/gpio.h>
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#include <linux/gpio_keys.h>
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#include <linux/stm/stx7111.h>
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#include <linux/stm/emi.h>
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#include <linux/stm/pci-glue.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/nand.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/partitions.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/flash.h>
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#include <asm/irq-ilc.h>
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#define HDK7111_PIO_PHY_RESET stm_gpio(1, 6)
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/* The hdk7111 board is populated with NOR, NAND, and Serial Flash. The setup
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* below assumes the board is in its default boot-from-NOR configuration. Other
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* boot configurations are possible but require board-level modifications to be
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* made, and equivalent changes to the setup here. Note, only boot-from-NOR has
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* been fully tested.
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*/
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static void __init hdk7111_setup(char** cmdline_p)
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{
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printk(KERN_INFO "STMicroelectronics STx7111 HDK initialisation\n");
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stx7111_early_device_init();
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stx7111_configure_asc(2, &(struct stx7111_asc_config) {
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.hw_flow_control = 0,
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.is_console = 1, });
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}
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static struct platform_device hdk7111_leds = {
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.name = "leds-gpio",
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.id = -1,
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.dev.platform_data = &(struct gpio_led_platform_data) {
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.num_leds = 1,
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.leds = (struct gpio_led[]) {
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{
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.name = "HB red",
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.default_trigger = "heartbeat",
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.gpio = stm_gpio(3, 0),
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},
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},
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},
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};
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static struct gpio_keys_button hdk7111_buttons[] = {
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{
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.code = BTN_0,
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.gpio = stm_gpio(6, 4),
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.desc = "SW1",
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},
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{
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.code = BTN_1,
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.gpio = stm_gpio(6, 5),
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.desc = "SW2",
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},
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{
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.code = BTN_2,
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.gpio = stm_gpio(6, 6),
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.desc = "SW3",
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},
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};
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static struct gpio_keys_platform_data hdk7111_button_data = {
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.buttons = hdk7111_buttons,
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.nbuttons = ARRAY_SIZE(hdk7111_buttons),
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};
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static struct platform_device hdk7111_button_device = {
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.name = "gpio-keys",
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.id = -1,
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.num_resources = 0,
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.dev = {
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.platform_data = &hdk7111_button_data,
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}
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};
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static struct platform_device hdk7111_nor_flash = {
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.name = "physmap-flash",
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.id = -1,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0, 32*1024*1024),
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},
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.dev.platform_data = &(struct physmap_flash_data) {
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.width = 2,
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.nr_parts = 3,
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.parts = (struct mtd_partition []) {
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{
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.name = "NOR Flash 1",
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.size = 0x00080000,
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.offset = 0x00000000,
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}, {
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.name = "NOR Flash 2",
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.size = 0x00200000,
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.offset = MTDPART_OFS_NXTBLK,
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}, {
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.name = "NOR Flash 3",
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.size = MTDPART_SIZ_FULL,
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.offset = MTDPART_OFS_NXTBLK,
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},
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},
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},
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};
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struct stm_nand_bank_data hdk7111_nand_flash = {
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.csn = 1,
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.options = NAND_NO_AUTOINCR | NAND_USE_FLASH_BBT,
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.nr_partitions = 2,
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.partitions = (struct mtd_partition []) {
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{
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.name = "NAND Flash 1",
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.offset = 0,
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.size = 0x00800000
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}, {
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.name = "NAND Flash 2",
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.offset = MTDPART_OFS_NXTBLK,
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.size = MTDPART_SIZ_FULL
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},
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},
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.timing_data = &(struct stm_nand_timing_data) {
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.sig_setup = 50, /* times in ns */
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.sig_hold = 50,
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.CE_deassert = 0,
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.WE_to_RBn = 100,
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.wr_on = 10,
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.wr_off = 40,
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.rd_on = 10,
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.rd_off = 40,
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.chip_delay = 30, /* in us */
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},
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};
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static struct spi_board_info hdk7111_serial_flash_board_info = {
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.modalias = "m25p80",
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.bus_num = 0,
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.max_speed_hz = 7000000,
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.chip_select = stm_gpio(6, 7),
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.mode = SPI_MODE_3,
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.platform_data = &(struct flash_platform_data) {
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.name = "m25p80",
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.type = "m25p16",
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.nr_parts = 2,
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.parts = (struct mtd_partition []) {
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{
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.name = "Serial Flash 1",
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.size = 0x00080000,
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.offset = 0,
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}, {
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.name = "Serial Flash 2",
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.size = MTDPART_SIZ_FULL,
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.offset = MTDPART_OFS_NXTBLK,
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},
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},
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},
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};
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static int hdk7111_phy_reset(void *bus)
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{
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gpio_set_value(HDK7111_PIO_PHY_RESET, 0);
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udelay(100);
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gpio_set_value(HDK7111_PIO_PHY_RESET, 1);
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return 1;
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}
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static struct stmmac_mdio_bus_data stmmac_mdio_bus = {
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.bus_id = 0,
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.phy_reset = hdk7111_phy_reset,
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.phy_mask = 0,
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};
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#define HDK7111_PCI_IDSEL stm_gpio(4, 4)
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#define HDK7111_PCI_SERR_IRQ ILC_EXT_IRQ(1)
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static struct stm_plat_pci_config hdk7111_pci_config = {
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.pci_irq = {
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/* Bizarre irq usage */
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[0] = PCI_PIN_UNUSED,
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[1] = PCI_PIN_DEFAULT,
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[2] = PCI_PIN_DEFAULT,
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[3] = PCI_PIN_UNUSED,
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},
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.serr_irq = HDK7111_PCI_SERR_IRQ,
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.idsel_lo = 30, /* Actually unused, connected to PIO */
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.idsel_hi = 30,
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.req_gnt = {
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[0] = PCI_PIN_DEFAULT,
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[1] = PCI_PIN_UNUSED,
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[2] = PCI_PIN_UNUSED,
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[3] = PCI_PIN_UNUSED
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},
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.pci_clk = 33333333,
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.pci_reset_gpio = stm_gpio(3, 7),
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};
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int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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int ret = -EINVAL;
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/* Wacky interrupt routing, INTA is actually connected to
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* what is usually INTC!
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*/
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if (pin == 1)
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ret = evt2irq(0xa40);
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else if (pin == 2)
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ret = evt2irq(0xa20);
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return ret;
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}
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static struct platform_device *hdk7111_devices[] __initdata = {
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&hdk7111_leds,
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&hdk7111_button_device,
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&hdk7111_nor_flash,
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};
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static int __init hdk7111_devices_init(void)
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{
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struct sysconf_field *sc;
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unsigned long nor_bank_base = 0;
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unsigned long nor_bank_size = 0;
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/* Configure Flash according to boot-device */
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sc = sysconf_claim(SYS_STA, 1, 16, 17, "boot_device");
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switch (sysconf_read(sc)) {
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case 0x0:
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/* Boot-from-NOR: */
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pr_info("Configuring FLASH for boot-from-NOR\n");
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nor_bank_base = emi_bank_base(0);
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nor_bank_size = emi_bank_base(1) - nor_bank_base;
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hdk7111_nand_flash.csn = 1;
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break;
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case 0x1:
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/* Boot-from-NAND */
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pr_info("Configuring FLASH for boot-from-NAND\n");
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nor_bank_base = emi_bank_base(1);
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nor_bank_size = emi_bank_base(2) - nor_bank_base;
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hdk7111_nand_flash.csn = 0;
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break;
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case 0x2:
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/* Boot-from-SPI */
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pr_info("Configuring FLASH for boot-from-SPI\n");
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/* NOR mapped to EMIB, with physical offset of 0x06000000! */
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nor_bank_base = emi_bank_base(1);
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nor_bank_size = emi_bank_base(2) - nor_bank_base;
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hdk7111_nand_flash.csn = 0;
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break;
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default:
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BUG();
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break;
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}
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sysconf_release(sc);
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/* Update NOR Flash base address and size: */
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/* - reduce visibility of NOR flash to EMI bank size */
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if (hdk7111_nor_flash.resource[0].end > nor_bank_size - 1)
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hdk7111_nor_flash.resource[0].end = nor_bank_size - 1;
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/* - update resource parameters */
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hdk7111_nor_flash.resource[0].start += nor_bank_base;
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hdk7111_nor_flash.resource[0].end += nor_bank_base;
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stx7111_configure_nand(&(struct stm_nand_config) {
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.driver = stm_nand_flex,
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.nr_banks = 1,
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.banks = &hdk7111_nand_flash,
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.rbn.flex_connected = 1,});
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spi_register_board_info(&hdk7111_serial_flash_board_info, 1);
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/* The hdk board is another board where the IDSEL line is erroneously
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* connected to a PIO rather than to the address lines. Since there is
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* only one card, we just claim it and drive it high permanently, so
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* that card is always selected for config cycles.
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*/
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if (!gpio_request(HDK7111_PCI_IDSEL, "pci idsel"))
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gpio_direction_output(HDK7111_PCI_IDSEL, 1);
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else
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pr_err("Unable to claim IDSEL PCI signal\n");
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/* The SERR interrupt is connected to the external IRQ pins */
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set_irq_type(HDK7111_PCI_SERR_IRQ, IRQ_TYPE_LEVEL_LOW);
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stx7111_configure_pci(&hdk7111_pci_config);
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stx7111_configure_pwm(&(struct stx7111_pwm_config) {
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.out0_enabled = 1,
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.out1_enabled = 0,
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});
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stx7111_configure_ssc_spi(0, NULL);
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stx7111_configure_ssc_i2c(1);
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stx7111_configure_ssc_i2c(2);
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stx7111_configure_ssc_i2c(3);
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stx7111_configure_usb(&(struct stx7111_usb_config) {
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.invert_ovrcur = 1,
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});
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gpio_request(HDK7111_PIO_PHY_RESET, "eth_phy_reset");
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gpio_direction_output(HDK7111_PIO_PHY_RESET, 1);
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stx7111_configure_ethernet(&(struct stx7111_ethernet_config) {
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.mode = stx7111_ethernet_mode_mii,
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.ext_clk = 0,
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.phy_bus = 0,
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.phy_addr = 0,
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.mdio_bus_data = &stmmac_mdio_bus,
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});
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stx7111_configure_lirc(&(struct stx7111_lirc_config) {
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.rx_mode = stx7111_lirc_rx_mode_ir,
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.tx_enabled = 1,
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.tx_od_enabled = 0,
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});
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return platform_add_devices(hdk7111_devices,
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ARRAY_SIZE(hdk7111_devices));
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}
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arch_initcall(hdk7111_devices_init);
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static void __iomem *hdk7111_ioport_map(unsigned long port, unsigned int size)
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{
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/*
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* If we have PCI then this should never be called because we
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* are using the generic iomap implementation. If we don't
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* have PCI then there are no IO mapped devices, so it still
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* shouldn't be called.
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*/
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BUG();
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return (void __iomem *)CCN_PVR;
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}
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static void __init hdk7111_init_irq(void)
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{
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}
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struct sh_machine_vector mv_hdk7111 __initmv = {
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.mv_name = "STx7111 HDK",
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.mv_setup = hdk7111_setup,
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.mv_nr_irqs = NR_IRQS,
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.mv_init_irq = hdk7111_init_irq,
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.mv_ioport_map = hdk7111_ioport_map,
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STM_PCI_IO_MACHINE_VEC
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};
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