| /* |
| * |
| * arch/xtensa/platform/xtavnet/setup.c |
| * |
| * ... |
| * |
| * Authors: Chris Zankel <chris@zankel.net> |
| * Joe Taylor <joe@tensilica.com> |
| * |
| * Copyright 2001 - 2006 Tensilica Inc. |
| * |
| * 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. |
| * |
| */ |
| #include <linux/stddef.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/errno.h> |
| #include <linux/reboot.h> |
| #include <linux/kdev_t.h> |
| #include <linux/types.h> |
| #include <linux/major.h> |
| #include <linux/console.h> |
| #include <linux/delay.h> |
| #include <linux/of.h> |
| #include <linux/clk-provider.h> |
| #include <linux/of_address.h> |
| |
| #include <asm/timex.h> |
| #include <asm/processor.h> |
| #include <asm/platform.h> |
| #include <asm/bootparam.h> |
| #include <platform/lcd.h> |
| #include <platform/hardware.h> |
| |
| void platform_halt(void) |
| { |
| lcd_disp_at_pos(" HALT ", 0); |
| local_irq_disable(); |
| while (1) |
| cpu_relax(); |
| } |
| |
| void platform_power_off(void) |
| { |
| lcd_disp_at_pos("POWEROFF", 0); |
| local_irq_disable(); |
| while (1) |
| cpu_relax(); |
| } |
| |
| void platform_restart(void) |
| { |
| /* Flush and reset the mmu, simulate a processor reset, and |
| * jump to the reset vector. */ |
| cpu_reset(); |
| /* control never gets here */ |
| } |
| |
| void __init platform_setup(char **cmdline) |
| { |
| } |
| |
| /* early initialization */ |
| |
| void __init platform_init(bp_tag_t *first) |
| { |
| } |
| |
| /* Heartbeat. */ |
| |
| void platform_heartbeat(void) |
| { |
| } |
| |
| #ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT |
| |
| void __init platform_calibrate_ccount(void) |
| { |
| ccount_freq = *(long *)XTFPGA_CLKFRQ_VADDR; |
| } |
| |
| #endif |
| |
| #ifdef CONFIG_OF |
| |
| static void __init xtfpga_clk_setup(struct device_node *np) |
| { |
| void __iomem *base = of_iomap(np, 0); |
| struct clk *clk; |
| u32 freq; |
| |
| if (!base) { |
| pr_err("%s: invalid address\n", np->name); |
| return; |
| } |
| |
| freq = __raw_readl(base); |
| iounmap(base); |
| clk = clk_register_fixed_rate(NULL, np->name, NULL, 0, freq); |
| |
| if (IS_ERR(clk)) { |
| pr_err("%s: clk registration failed\n", np->name); |
| return; |
| } |
| |
| if (of_clk_add_provider(np, of_clk_src_simple_get, clk)) { |
| pr_err("%s: clk provider registration failed\n", np->name); |
| return; |
| } |
| } |
| CLK_OF_DECLARE(xtfpga_clk, "cdns,xtfpga-clock", xtfpga_clk_setup); |
| |
| #define MAC_LEN 6 |
| static void __init update_local_mac(struct device_node *node) |
| { |
| struct property *newmac; |
| const u8* macaddr; |
| int prop_len; |
| |
| macaddr = of_get_property(node, "local-mac-address", &prop_len); |
| if (macaddr == NULL || prop_len != MAC_LEN) |
| return; |
| |
| newmac = kzalloc(sizeof(*newmac) + MAC_LEN, GFP_KERNEL); |
| if (newmac == NULL) |
| return; |
| |
| newmac->value = newmac + 1; |
| newmac->length = MAC_LEN; |
| newmac->name = kstrdup("local-mac-address", GFP_KERNEL); |
| if (newmac->name == NULL) { |
| kfree(newmac); |
| return; |
| } |
| |
| memcpy(newmac->value, macaddr, MAC_LEN); |
| ((u8*)newmac->value)[5] = (*(u32*)DIP_SWITCHES_VADDR) & 0x3f; |
| of_update_property(node, newmac); |
| } |
| |
| static int __init machine_setup(void) |
| { |
| struct device_node *eth = NULL; |
| |
| if ((eth = of_find_compatible_node(eth, NULL, "opencores,ethoc"))) |
| update_local_mac(eth); |
| return 0; |
| } |
| arch_initcall(machine_setup); |
| |
| #else |
| |
| #include <linux/serial_8250.h> |
| #include <linux/if.h> |
| #include <net/ethoc.h> |
| #include <linux/usb/c67x00.h> |
| |
| /*---------------------------------------------------------------------------- |
| * Ethernet -- OpenCores Ethernet MAC (ethoc driver) |
| */ |
| |
| static struct resource ethoc_res[] = { |
| [0] = { /* register space */ |
| .start = OETH_REGS_PADDR, |
| .end = OETH_REGS_PADDR + OETH_REGS_SIZE - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { /* buffer space */ |
| .start = OETH_SRAMBUFF_PADDR, |
| .end = OETH_SRAMBUFF_PADDR + OETH_SRAMBUFF_SIZE - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [2] = { /* IRQ number */ |
| .start = OETH_IRQ, |
| .end = OETH_IRQ, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct ethoc_platform_data ethoc_pdata = { |
| /* |
| * The MAC address for these boards is 00:50:c2:13:6f:xx. |
| * The last byte (here as zero) is read from the DIP switches on the |
| * board. |
| */ |
| .hwaddr = { 0x00, 0x50, 0xc2, 0x13, 0x6f, 0 }, |
| .phy_id = -1, |
| .big_endian = XCHAL_HAVE_BE, |
| }; |
| |
| static struct platform_device ethoc_device = { |
| .name = "ethoc", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(ethoc_res), |
| .resource = ethoc_res, |
| .dev = { |
| .platform_data = ðoc_pdata, |
| }, |
| }; |
| |
| /*---------------------------------------------------------------------------- |
| * USB Host/Device -- Cypress CY7C67300 |
| */ |
| |
| static struct resource c67x00_res[] = { |
| [0] = { /* register space */ |
| .start = C67X00_PADDR, |
| .end = C67X00_PADDR + C67X00_SIZE - 1, |
| .flags = IORESOURCE_MEM, |
| }, |
| [1] = { /* IRQ number */ |
| .start = C67X00_IRQ, |
| .end = C67X00_IRQ, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct c67x00_platform_data c67x00_pdata = { |
| .sie_config = C67X00_SIE1_HOST | C67X00_SIE2_UNUSED, |
| .hpi_regstep = 4, |
| }; |
| |
| static struct platform_device c67x00_device = { |
| .name = "c67x00", |
| .id = -1, |
| .num_resources = ARRAY_SIZE(c67x00_res), |
| .resource = c67x00_res, |
| .dev = { |
| .platform_data = &c67x00_pdata, |
| }, |
| }; |
| |
| /*---------------------------------------------------------------------------- |
| * UART |
| */ |
| |
| static struct resource serial_resource = { |
| .start = DUART16552_PADDR, |
| .end = DUART16552_PADDR + 0x1f, |
| .flags = IORESOURCE_MEM, |
| }; |
| |
| static struct plat_serial8250_port serial_platform_data[] = { |
| [0] = { |
| .mapbase = DUART16552_PADDR, |
| .irq = DUART16552_INTNUM, |
| .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | |
| UPF_IOREMAP, |
| .iotype = XCHAL_HAVE_BE ? UPIO_MEM32BE : UPIO_MEM32, |
| .regshift = 2, |
| .uartclk = 0, /* set in xtavnet_init() */ |
| }, |
| { }, |
| }; |
| |
| static struct platform_device xtavnet_uart = { |
| .name = "serial8250", |
| .id = PLAT8250_DEV_PLATFORM, |
| .dev = { |
| .platform_data = serial_platform_data, |
| }, |
| .num_resources = 1, |
| .resource = &serial_resource, |
| }; |
| |
| /* platform devices */ |
| static struct platform_device *platform_devices[] __initdata = { |
| ðoc_device, |
| &c67x00_device, |
| &xtavnet_uart, |
| }; |
| |
| |
| static int __init xtavnet_init(void) |
| { |
| /* Ethernet MAC address. */ |
| ethoc_pdata.hwaddr[5] = *(u32 *)DIP_SWITCHES_VADDR; |
| |
| /* Clock rate varies among FPGA bitstreams; board specific FPGA register |
| * reports the actual clock rate. |
| */ |
| serial_platform_data[0].uartclk = *(long *)XTFPGA_CLKFRQ_VADDR; |
| |
| |
| /* register platform devices */ |
| platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); |
| |
| /* ETHOC driver is a bit quiet; at least display Ethernet MAC, so user |
| * knows whether they set it correctly on the DIP switches. |
| */ |
| pr_info("XTFPGA: Ethernet MAC %pM\n", ethoc_pdata.hwaddr); |
| ethoc_pdata.eth_clkfreq = *(long *)XTFPGA_CLKFRQ_VADDR; |
| |
| return 0; |
| } |
| |
| /* |
| * Register to be done during do_initcalls(). |
| */ |
| arch_initcall(xtavnet_init); |
| |
| #endif /* CONFIG_OF */ |