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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7ec80ddf04
Add Nuvoton W90X900 ARM9 plat support to linux arm tree, Now, this patch include only W90P910 EVB of W90P910 CPU, Its driver is nothing. Signed-off-by: Wan ZongShun <mcuos.com@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/*
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* linux/arch/arm/mach-w90x900/w90p910.c
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*
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* Based on linux/arch/arm/plat-s3c24xx/s3c244x.c by Ben Dooks
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*
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* Copyright (c) 2008 Nuvoton technology corporation
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* All rights reserved.
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*
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* Wan ZongShun <mcuos.com@gmail.com>
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*
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* W90P910 cpu support
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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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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/irq.h>
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#include <mach/hardware.h>
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#include <mach/regs-serial.h>
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#include "cpu.h"
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/*W90P910 has five uarts*/
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#define MAX_UART_COUNT 5
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static int uart_count;
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static struct platform_device *uart_devs[MAX_UART_COUNT-1];
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/* Initial IO mappings */
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static struct map_desc w90p910_iodesc[] __initdata = {
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IODESC_ENT(IRQ),
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IODESC_ENT(GCR),
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IODESC_ENT(UART),
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IODESC_ENT(TIMER),
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IODESC_ENT(EBI),
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/*IODESC_ENT(LCD),*/
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};
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/*Init the dev resource*/
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static W90X900_RES(UART0);
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static W90X900_RES(UART1);
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static W90X900_RES(UART2);
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static W90X900_RES(UART3);
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static W90X900_RES(UART4);
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static W90X900_DEVICE(uart0, UART0, 0, "w90x900-uart");
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static W90X900_DEVICE(uart1, UART1, 1, "w90x900-uart");
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static W90X900_DEVICE(uart2, UART2, 2, "w90x900-uart");
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static W90X900_DEVICE(uart3, UART3, 3, "w90x900-uart");
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static W90X900_DEVICE(uart4, UART4, 4, "w90x900-uart");
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static struct platform_device *uart_devices[] __initdata = {
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&w90x900_uart0,
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&w90x900_uart1,
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&w90x900_uart2,
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&w90x900_uart3,
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&w90x900_uart4
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};
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/*Init W90P910 uart device*/
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void __init w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no)
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{
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struct platform_device *platdev;
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int uart, uartdev;
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/*By min() to judge count of uart be used indeed*/
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uartdev = ARRAY_SIZE(uart_devices);
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no = min(uartdev, no);
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for (uart = 0; uart < no; uart++, cfg++) {
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if (cfg->hwport != uart)
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printk(KERN_ERR "w90x900_uartcfg[%d] error\n", uart);
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platdev = uart_devices[cfg->hwport];
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uart_devs[uart] = platdev;
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platdev->dev.platform_data = cfg;
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}
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uart_count = uart;
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}
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/*Init W90P910 evb io*/
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void __init w90p910_map_io(struct map_desc *mach_desc, int mach_size)
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{
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unsigned long idcode = 0x0;
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iotable_init(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc));
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idcode = __raw_readl(W90X900PDID);
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if (idcode != W90P910_CPUID)
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printk(KERN_ERR "CPU type 0x%08lx is not W90P910\n", idcode);
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}
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/*Init W90P910 clock*/
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void __init w90p910_init_clocks(int xtal)
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{
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}
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static int __init w90p910_init_cpu(void)
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{
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return 0;
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}
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static int __init w90x900_arch_init(void)
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{
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int ret;
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ret = w90p910_init_cpu();
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if (ret != 0)
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return ret;
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return platform_add_devices(uart_devs, uart_count);
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}
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arch_initcall(w90x900_arch_init);
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