94 lines
2.0 KiB
C
94 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
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*/
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/pm.h>
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#include <linux/time.h>
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#include <asm/reboot.h>
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#include <asm/mach-ar7/ar7.h>
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#include <asm/mach-ar7/prom.h>
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static void ar7_machine_restart(char *command)
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{
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u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1);
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writel(1, softres_reg);
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}
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static void ar7_machine_halt(void)
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{
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while (1)
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;
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}
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static void ar7_machine_power_off(void)
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{
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u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1);
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u32 power_state = readl(power_reg) | (3 << 30);
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writel(power_state, power_reg);
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ar7_machine_halt();
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}
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const char *get_system_type(void)
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{
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u16 chip_id = ar7_chip_id();
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u16 titan_variant_id = titan_chip_id();
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switch (chip_id) {
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case AR7_CHIP_7100:
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return "TI AR7 (TNETD7100)";
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case AR7_CHIP_7200:
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return "TI AR7 (TNETD7200)";
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case AR7_CHIP_7300:
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return "TI AR7 (TNETD7300)";
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case AR7_CHIP_TITAN:
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switch (titan_variant_id) {
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case TITAN_CHIP_1050:
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return "TI AR7 (TNETV1050)";
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case TITAN_CHIP_1055:
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return "TI AR7 (TNETV1055)";
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case TITAN_CHIP_1056:
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return "TI AR7 (TNETV1056)";
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case TITAN_CHIP_1060:
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return "TI AR7 (TNETV1060)";
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}
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fallthrough;
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default:
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return "TI AR7 (unknown)";
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}
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}
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static int __init ar7_init_console(void)
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{
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return 0;
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}
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console_initcall(ar7_init_console);
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/*
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* Initializes basic routines and structures pointers, memory size (as
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* given by the bios and saves the command line.
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*/
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void __init plat_mem_setup(void)
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{
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unsigned long io_base;
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_machine_restart = ar7_machine_restart;
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_machine_halt = ar7_machine_halt;
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pm_power_off = ar7_machine_power_off;
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io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000);
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if (!io_base)
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panic("Can't remap IO base!");
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set_io_port_base(io_base);
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prom_meminit();
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printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n",
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get_system_type(), ar7_chip_id(), ar7_chip_rev());
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}
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