cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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micro9.c (3396B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 *  linux/arch/arm/mach-ep93xx/micro9.c
      4 *
      5 * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH
      6 *                    Manfred Gruber <m.gruber@tirol.com>
      7 * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH
      8 *                    Hubert Feurstein <hubert.feurstein@contec.at>
      9 */
     10
     11#include <linux/kernel.h>
     12#include <linux/init.h>
     13#include <linux/platform_device.h>
     14#include <linux/io.h>
     15
     16#include "hardware.h"
     17
     18#include <asm/mach-types.h>
     19#include <asm/mach/arch.h>
     20
     21#include "soc.h"
     22
     23/*************************************************************************
     24 * Micro9 NOR Flash
     25 *
     26 * Micro9-High has up to 64MB of 32-bit flash on CS1
     27 * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1
     28 * Micro9-Lite uses a separate MTD map driver for flash support
     29 * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1
     30 *************************************************************************/
     31static unsigned int __init micro9_detect_bootwidth(void)
     32{
     33	u32 v;
     34
     35	/* Detect the bus width of the external flash memory */
     36	v = __raw_readl(EP93XX_SYSCON_SYSCFG);
     37	if (v & EP93XX_SYSCON_SYSCFG_LCSN7)
     38		return 4; /* 32-bit */
     39	else
     40		return 2; /* 16-bit */
     41}
     42
     43static void __init micro9_register_flash(void)
     44{
     45	unsigned int width;
     46
     47	if (machine_is_micro9())
     48		width = 4;
     49	else if (machine_is_micro9m() || machine_is_micro9s())
     50		width = micro9_detect_bootwidth();
     51	else
     52		width = 0;
     53
     54	if (width)
     55		ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M);
     56}
     57
     58
     59/*************************************************************************
     60 * Micro9 Ethernet
     61 *************************************************************************/
     62static struct ep93xx_eth_data __initdata micro9_eth_data = {
     63	.phy_id		= 0x1f,
     64};
     65
     66
     67static void __init micro9_init_machine(void)
     68{
     69	ep93xx_init_devices();
     70	ep93xx_register_eth(&micro9_eth_data, 1);
     71	micro9_register_flash();
     72}
     73
     74
     75#ifdef CONFIG_MACH_MICRO9H
     76MACHINE_START(MICRO9, "Contec Micro9-High")
     77	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
     78	.atag_offset	= 0x100,
     79	.nr_irqs	= NR_EP93XX_IRQS,
     80	.map_io		= ep93xx_map_io,
     81	.init_irq	= ep93xx_init_irq,
     82	.init_time	= ep93xx_timer_init,
     83	.init_machine	= micro9_init_machine,
     84	.restart	= ep93xx_restart,
     85MACHINE_END
     86#endif
     87
     88#ifdef CONFIG_MACH_MICRO9M
     89MACHINE_START(MICRO9M, "Contec Micro9-Mid")
     90	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
     91	.atag_offset	= 0x100,
     92	.nr_irqs	= NR_EP93XX_IRQS,
     93	.map_io		= ep93xx_map_io,
     94	.init_irq	= ep93xx_init_irq,
     95	.init_time	= ep93xx_timer_init,
     96	.init_machine	= micro9_init_machine,
     97	.restart	= ep93xx_restart,
     98MACHINE_END
     99#endif
    100
    101#ifdef CONFIG_MACH_MICRO9L
    102MACHINE_START(MICRO9L, "Contec Micro9-Lite")
    103	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
    104	.atag_offset	= 0x100,
    105	.nr_irqs	= NR_EP93XX_IRQS,
    106	.map_io		= ep93xx_map_io,
    107	.init_irq	= ep93xx_init_irq,
    108	.init_time	= ep93xx_timer_init,
    109	.init_machine	= micro9_init_machine,
    110	.restart	= ep93xx_restart,
    111MACHINE_END
    112#endif
    113
    114#ifdef CONFIG_MACH_MICRO9S
    115MACHINE_START(MICRO9S, "Contec Micro9-Slim")
    116	/* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
    117	.atag_offset	= 0x100,
    118	.nr_irqs	= NR_EP93XX_IRQS,
    119	.map_io		= ep93xx_map_io,
    120	.init_irq	= ep93xx_init_irq,
    121	.init_time	= ep93xx_timer_init,
    122	.init_machine	= micro9_init_machine,
    123	.restart	= ep93xx_restart,
    124MACHINE_END
    125#endif