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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setup.c (2029B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Carsten Langgaard, carstenl@mips.com
      4 * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
      5 */
      6#include <linux/init.h>
      7#include <linux/ioport.h>
      8#include <linux/pm.h>
      9#include <linux/time.h>
     10
     11#include <asm/reboot.h>
     12#include <asm/mach-ar7/ar7.h>
     13#include <asm/mach-ar7/prom.h>
     14
     15static void ar7_machine_restart(char *command)
     16{
     17	u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1);
     18
     19	writel(1, softres_reg);
     20}
     21
     22static void ar7_machine_halt(void)
     23{
     24	while (1)
     25		;
     26}
     27
     28static void ar7_machine_power_off(void)
     29{
     30	u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1);
     31	u32 power_state = readl(power_reg) | (3 << 30);
     32
     33	writel(power_state, power_reg);
     34	ar7_machine_halt();
     35}
     36
     37const char *get_system_type(void)
     38{
     39	u16 chip_id = ar7_chip_id();
     40	u16 titan_variant_id = titan_chip_id();
     41
     42	switch (chip_id) {
     43	case AR7_CHIP_7100:
     44		return "TI AR7 (TNETD7100)";
     45	case AR7_CHIP_7200:
     46		return "TI AR7 (TNETD7200)";
     47	case AR7_CHIP_7300:
     48		return "TI AR7 (TNETD7300)";
     49	case AR7_CHIP_TITAN:
     50		switch (titan_variant_id) {
     51		case TITAN_CHIP_1050:
     52			return "TI AR7 (TNETV1050)";
     53		case TITAN_CHIP_1055:
     54			return "TI AR7 (TNETV1055)";
     55		case TITAN_CHIP_1056:
     56			return "TI AR7 (TNETV1056)";
     57		case TITAN_CHIP_1060:
     58			return "TI AR7 (TNETV1060)";
     59		}
     60		fallthrough;
     61	default:
     62		return "TI AR7 (unknown)";
     63	}
     64}
     65
     66static int __init ar7_init_console(void)
     67{
     68	return 0;
     69}
     70console_initcall(ar7_init_console);
     71
     72/*
     73 * Initializes basic routines and structures pointers, memory size (as
     74 * given by the bios and saves the command line.
     75 */
     76void __init plat_mem_setup(void)
     77{
     78	unsigned long io_base;
     79
     80	_machine_restart = ar7_machine_restart;
     81	_machine_halt = ar7_machine_halt;
     82	pm_power_off = ar7_machine_power_off;
     83
     84	io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);
     85	if (!io_base)
     86		panic("Can't remap IO base!");
     87	set_io_port_base(io_base);
     88
     89	prom_meminit();
     90
     91	printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n",
     92			get_system_type(), ar7_chip_id(), ar7_chip_rev());
     93}