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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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cb8f55b920
From: Wolfgang Grandegger <wg@denx.de> Add basic support for the General Purpose Router (GPR) board from Trapeze ITS. Signed-off-by: Wolfgang Grandegger <wg@denx.de> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1460/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*
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* Copyright 2010 Wolfgang Grandegger <wg@denx.de>
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*
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* Copyright 2000-2003, 2008 MontaVista Software Inc.
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* Author: MontaVista Software, Inc. <source@mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/gpio.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <asm/reboot.h>
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#include <asm/mach-au1x00/au1000.h>
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#include <prom.h>
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#define UART1_ADDR KSEG1ADDR(UART1_PHYS_ADDR)
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#define UART3_ADDR KSEG1ADDR(UART3_PHYS_ADDR)
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char irq_tab_alchemy[][5] __initdata = {
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[0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff },
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};
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static void gpr_reset(char *c)
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{
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/* switch System-LED to orange (red# and green# on) */
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alchemy_gpio_direction_output(4, 0);
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alchemy_gpio_direction_output(5, 0);
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/* trigger watchdog to reset board in 200ms */
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printk(KERN_EMERG "Triggering watchdog soft reset...\n");
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raw_local_irq_disable();
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alchemy_gpio_direction_output(1, 0);
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udelay(1);
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alchemy_gpio_set_value(1, 1);
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while (1)
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cpu_wait();
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}
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static void gpr_power_off(void)
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{
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while (1)
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cpu_wait();
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}
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void __init board_setup(void)
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{
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printk(KERN_INFO "Tarpeze ITS GPR board\n");
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pm_power_off = gpr_power_off;
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_machine_halt = gpr_power_off;
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_machine_restart = gpr_reset;
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/* Enable UART3 */
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au_writel(0x1, UART3_ADDR + UART_MOD_CNTRL);/* clock enable (CE) */
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au_writel(0x3, UART3_ADDR + UART_MOD_CNTRL); /* CE and "enable" */
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/* Enable UART1 */
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au_writel(0x1, UART1_ADDR + UART_MOD_CNTRL); /* clock enable (CE) */
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au_writel(0x3, UART1_ADDR + UART_MOD_CNTRL); /* CE and "enable" */
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/* Take away Reset of UMTS-card */
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alchemy_gpio_direction_output(215, 1);
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#ifdef CONFIG_PCI
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#if defined(__MIPSEB__)
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au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
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#else
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au_writel(0xf, Au1500_PCI_CFG);
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#endif
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#endif
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}
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