mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 20:00:53 +07:00
1d09de7dc7
This patch changes all absolute SYS_XY registers to offsets from the SYS block base, prefixes them with AU1000 to avoid silent failures due to changed addresses, and introduces helper functions to read/write them. No functional changes, comparing assembly of a few select functions shows no differences. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> Cc: Linux-MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/7464/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
155 lines
4.2 KiB
C
155 lines
4.2 KiB
C
/*
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* BRIEF MODULE DESCRIPTION
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* MyCable XXS1500 board support
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*
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* Copyright 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
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <asm/bootinfo.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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const char *get_system_type(void)
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{
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return "XXS1500";
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}
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void __init prom_init(void)
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{
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unsigned char *memsize_str;
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unsigned long memsize;
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prom_argc = fw_arg0;
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prom_argv = (char **)fw_arg1;
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prom_envp = (char **)fw_arg2;
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prom_init_cmdline();
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memsize_str = prom_getenv("memsize");
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if (!memsize_str || kstrtoul(memsize_str, 0, &memsize))
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memsize = 0x04000000;
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add_memory_region(0, memsize, BOOT_MEM_RAM);
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}
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void prom_putchar(unsigned char c)
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{
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alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
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}
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static void xxs1500_reset(char *c)
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{
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/* Jump to the reset vector */
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__asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
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}
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static void xxs1500_power_off(void)
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{
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while (1)
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asm volatile (
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" .set mips32 \n"
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" wait \n"
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" .set mips0 \n");
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}
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void __init board_setup(void)
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{
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u32 pin_func;
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pm_power_off = xxs1500_power_off;
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_machine_halt = xxs1500_power_off;
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_machine_restart = xxs1500_reset;
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alchemy_gpio1_input_enable();
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alchemy_gpio2_enable();
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/* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
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pin_func = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
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pin_func |= SYS_PF_UR3;
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alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
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/* Enable UART */
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alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
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/* Enable DTR (MCR bit 0) = USB power up */
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__raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
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wmb();
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}
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/******************************************************************************/
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static struct resource xxs1500_pcmcia_res[] = {
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{
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.name = "pcmcia-io",
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.flags = IORESOURCE_MEM,
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.start = AU1000_PCMCIA_IO_PHYS_ADDR,
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.end = AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1,
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},
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{
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.name = "pcmcia-attr",
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.flags = IORESOURCE_MEM,
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.start = AU1000_PCMCIA_ATTR_PHYS_ADDR,
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.end = AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
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},
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{
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.name = "pcmcia-mem",
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.flags = IORESOURCE_MEM,
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.start = AU1000_PCMCIA_MEM_PHYS_ADDR,
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.end = AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
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},
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};
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static struct platform_device xxs1500_pcmcia_dev = {
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.name = "xxs1500_pcmcia",
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.id = -1,
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.num_resources = ARRAY_SIZE(xxs1500_pcmcia_res),
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.resource = xxs1500_pcmcia_res,
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};
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static struct platform_device *xxs1500_devs[] __initdata = {
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&xxs1500_pcmcia_dev,
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};
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static int __init xxs1500_dev_init(void)
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{
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irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
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irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);
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irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */
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irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);
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return platform_add_devices(xxs1500_devs,
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ARRAY_SIZE(xxs1500_devs));
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}
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device_initcall(xxs1500_dev_init);
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