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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/xtensa/platforms/xt2000/setup.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/xtensa/platforms/xt2000/setup.c')
-rw-r--r--arch/xtensa/platforms/xt2000/setup.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/arch/xtensa/platforms/xt2000/setup.c b/arch/xtensa/platforms/xt2000/setup.c
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+++ b/arch/xtensa/platforms/xt2000/setup.c
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * arch/xtensa/platforms/xt2000/setup.c
+ *
+ * Platform specific functions for the XT2000 board.
+ *
+ * Authors: Chris Zankel <chris@zankel.net>
+ * Joe Taylor <joe@tensilica.com>
+ *
+ * Copyright 2001 - 2004 Tensilica Inc.
+ */
+#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/stringify.h>
+#include <linux/platform_device.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+
+#include <asm/processor.h>
+#include <asm/platform.h>
+#include <asm/bootparam.h>
+#include <platform/hardware.h>
+#include <platform/serial.h>
+
+/* Assumes s points to an 8-chr string. No checking for NULL. */
+
+static void led_print (int f, char *s)
+{
+ unsigned long* led_addr = (unsigned long*) (XT2000_LED_ADDR + 0xE0) + f;
+ int i;
+ for (i = f; i < 8; i++)
+ if ((*led_addr++ = *s++) == 0)
+ break;
+}
+
+void platform_halt(void)
+{
+ led_print (0, " HALT ");
+ local_irq_disable();
+ while (1);
+}
+
+void platform_power_off(void)
+{
+ led_print (0, "POWEROFF");
+ local_irq_disable();
+ while (1);
+}
+
+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)
+{
+ led_print (0, "LINUX ");
+}
+
+/* early initialization */
+
+void __init platform_init(bp_tag_t *first)
+{
+}
+
+/* Heartbeat. Let the LED blink. */
+
+void platform_heartbeat(void)
+{
+ static int i, t;
+
+ if (--t < 0)
+ {
+ t = 59;
+ led_print(7, i ? ".": " ");
+ i ^= 1;
+ }
+}
+
+//#define RS_TABLE_SIZE 2
+
+#define _SERIAL_PORT(_base,_irq) \
+{ \
+ .mapbase = (_base), \
+ .membase = (void*)(_base), \
+ .irq = (_irq), \
+ .uartclk = DUART16552_XTAL_FREQ, \
+ .iotype = UPIO_MEM, \
+ .flags = UPF_BOOT_AUTOCONF, \
+ .regshift = 2, \
+}
+
+static struct plat_serial8250_port xt2000_serial_data[] = {
+#if XCHAL_HAVE_BE
+ _SERIAL_PORT(DUART16552_1_ADDR + 3, DUART16552_1_INTNUM),
+ _SERIAL_PORT(DUART16552_2_ADDR + 3, DUART16552_2_INTNUM),
+#else
+ _SERIAL_PORT(DUART16552_1_ADDR, DUART16552_1_INTNUM),
+ _SERIAL_PORT(DUART16552_2_ADDR, DUART16552_2_INTNUM),
+#endif
+ { }
+};
+
+static struct platform_device xt2000_serial8250_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = xt2000_serial_data,
+ },
+};
+
+static struct resource xt2000_sonic_res[] = {
+ {
+ .start = SONIC83934_ADDR,
+ .end = SONIC83934_ADDR + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = SONIC83934_INTNUM,
+ .end = SONIC83934_INTNUM,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device xt2000_sonic_device = {
+ .name = "xtsonic",
+ .num_resources = ARRAY_SIZE(xt2000_sonic_res),
+ .resource = xt2000_sonic_res,
+};
+
+static int __init xt2000_setup_devinit(void)
+{
+ platform_device_register(&xt2000_serial8250_device);
+ platform_device_register(&xt2000_sonic_device);
+
+ return 0;
+}
+
+device_initcall(xt2000_setup_devinit);