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150 lines
3.1 KiB
150 lines
3.1 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* arch/xtensa/platforms/xt2000/setup.c |
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* |
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* Platform specific functions for the XT2000 board. |
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* |
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* Authors: Chris Zankel <[email protected]> |
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* Joe Taylor <[email protected]> |
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* |
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* Copyright 2001 - 2004 Tensilica Inc. |
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*/ |
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#include <linux/stddef.h> |
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/errno.h> |
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#include <linux/reboot.h> |
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#include <linux/kdev_t.h> |
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#include <linux/types.h> |
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#include <linux/major.h> |
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#include <linux/console.h> |
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#include <linux/delay.h> |
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#include <linux/stringify.h> |
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#include <linux/platform_device.h> |
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#include <linux/serial.h> |
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#include <linux/serial_8250.h> |
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#include <asm/processor.h> |
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#include <asm/platform.h> |
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#include <asm/bootparam.h> |
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#include <platform/hardware.h> |
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#include <platform/serial.h> |
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/* Assumes s points to an 8-chr string. No checking for NULL. */ |
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static void led_print (int f, char *s) |
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{ |
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unsigned long* led_addr = (unsigned long*) (XT2000_LED_ADDR + 0xE0) + f; |
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int i; |
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for (i = f; i < 8; i++) |
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if ((*led_addr++ = *s++) == 0) |
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break; |
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} |
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void platform_halt(void) |
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{ |
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led_print (0, " HALT "); |
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local_irq_disable(); |
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while (1); |
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} |
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void platform_power_off(void) |
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{ |
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led_print (0, "POWEROFF"); |
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local_irq_disable(); |
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while (1); |
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} |
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void platform_restart(void) |
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{ |
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/* Flush and reset the mmu, simulate a processor reset, and |
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* jump to the reset vector. */ |
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cpu_reset(); |
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/* control never gets here */ |
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} |
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void __init platform_setup(char** cmdline) |
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{ |
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led_print (0, "LINUX "); |
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} |
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/* early initialization */ |
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void __init platform_init(bp_tag_t *first) |
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{ |
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} |
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/* Heartbeat. Let the LED blink. */ |
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void platform_heartbeat(void) |
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{ |
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static int i=0, t = 0; |
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if (--t < 0) |
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{ |
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t = 59; |
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led_print(7, i ? ".": " "); |
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i ^= 1; |
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} |
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} |
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//#define RS_TABLE_SIZE 2 |
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#define _SERIAL_PORT(_base,_irq) \ |
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{ \ |
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.mapbase = (_base), \ |
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.membase = (void*)(_base), \ |
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.irq = (_irq), \ |
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.uartclk = DUART16552_XTAL_FREQ, \ |
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.iotype = UPIO_MEM, \ |
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.flags = UPF_BOOT_AUTOCONF, \ |
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.regshift = 2, \ |
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} |
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static struct plat_serial8250_port xt2000_serial_data[] = { |
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#if XCHAL_HAVE_BE |
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_SERIAL_PORT(DUART16552_1_ADDR + 3, DUART16552_1_INTNUM), |
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_SERIAL_PORT(DUART16552_2_ADDR + 3, DUART16552_2_INTNUM), |
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#else |
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_SERIAL_PORT(DUART16552_1_ADDR, DUART16552_1_INTNUM), |
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_SERIAL_PORT(DUART16552_2_ADDR, DUART16552_2_INTNUM), |
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#endif |
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{ } |
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}; |
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static struct platform_device xt2000_serial8250_device = { |
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.name = "serial8250", |
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.id = PLAT8250_DEV_PLATFORM, |
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.dev = { |
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.platform_data = xt2000_serial_data, |
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}, |
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}; |
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static struct resource xt2000_sonic_res[] = { |
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{ |
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.start = SONIC83934_ADDR, |
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.end = SONIC83934_ADDR + 0xff, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = SONIC83934_INTNUM, |
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.end = SONIC83934_INTNUM, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct platform_device xt2000_sonic_device = { |
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.name = "xtsonic", |
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.num_resources = ARRAY_SIZE(xt2000_sonic_res), |
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.resource = xt2000_sonic_res, |
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}; |
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static int __init xt2000_setup_devinit(void) |
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{ |
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platform_device_register(&xt2000_serial8250_device); |
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platform_device_register(&xt2000_sonic_device); |
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return 0; |
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} |
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device_initcall(xt2000_setup_devinit);
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