| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Carsten Langgaard, carstenl@mips.com |
| 3 | * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you can distribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License (Version 2) as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 17 | */ |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/ioport.h> |
| 20 | #include <linux/pm.h> |
| 21 | #include <linux/time.h> |
| 22 | |
| 23 | #include <asm/reboot.h> |
| 24 | #include <asm/mach-ar7/ar7.h> |
| 25 | #include <asm/mach-ar7/prom.h> |
| 26 | |
| 27 | static void ar7_machine_restart(char *command) |
| 28 | { |
| 29 | u32 *softres_reg = ioremap(AR7_REGS_RESET + AR7_RESET_SOFTWARE, 1); |
| 30 | |
| 31 | writel(1, softres_reg); |
| 32 | } |
| 33 | |
| 34 | static void ar7_machine_halt(void) |
| 35 | { |
| 36 | while (1) |
| 37 | ; |
| 38 | } |
| 39 | |
| 40 | static void ar7_machine_power_off(void) |
| 41 | { |
| 42 | u32 *power_reg = (u32 *)ioremap(AR7_REGS_POWER, 1); |
| 43 | u32 power_state = readl(power_reg) | (3 << 30); |
| 44 | |
| 45 | writel(power_state, power_reg); |
| 46 | ar7_machine_halt(); |
| 47 | } |
| 48 | |
| 49 | const char *get_system_type(void) |
| 50 | { |
| 51 | u16 chip_id = ar7_chip_id(); |
| 52 | u16 titan_variant_id = titan_chip_id(); |
| 53 | |
| 54 | switch (chip_id) { |
| 55 | case AR7_CHIP_7100: |
| 56 | return "TI AR7 (TNETD7100)"; |
| 57 | case AR7_CHIP_7200: |
| 58 | return "TI AR7 (TNETD7200)"; |
| 59 | case AR7_CHIP_7300: |
| 60 | return "TI AR7 (TNETD7300)"; |
| 61 | case AR7_CHIP_TITAN: |
| 62 | switch (titan_variant_id) { |
| 63 | case TITAN_CHIP_1050: |
| 64 | return "TI AR7 (TNETV1050)"; |
| 65 | case TITAN_CHIP_1055: |
| 66 | return "TI AR7 (TNETV1055)"; |
| 67 | case TITAN_CHIP_1056: |
| 68 | return "TI AR7 (TNETV1056)"; |
| 69 | case TITAN_CHIP_1060: |
| 70 | return "TI AR7 (TNETV1060)"; |
| 71 | } |
| 72 | default: |
| 73 | return "TI AR7 (unknown)"; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | static int __init ar7_init_console(void) |
| 78 | { |
| 79 | return 0; |
| 80 | } |
| 81 | console_initcall(ar7_init_console); |
| 82 | |
| 83 | /* |
| 84 | * Initializes basic routines and structures pointers, memory size (as |
| 85 | * given by the bios and saves the command line. |
| 86 | */ |
| 87 | void __init plat_mem_setup(void) |
| 88 | { |
| 89 | unsigned long io_base; |
| 90 | |
| 91 | _machine_restart = ar7_machine_restart; |
| 92 | _machine_halt = ar7_machine_halt; |
| 93 | pm_power_off = ar7_machine_power_off; |
| 94 | |
| 95 | io_base = (unsigned long)ioremap(AR7_REGS_BASE, 0x10000); |
| 96 | if (!io_base) |
| 97 | panic("Can't remap IO base!"); |
| 98 | set_io_port_base(io_base); |
| 99 | |
| 100 | prom_meminit(); |
| 101 | |
| 102 | printk(KERN_INFO "%s, ID: 0x%04x, Revision: 0x%02x\n", |
| 103 | get_system_type(), ar7_chip_id(), ar7_chip_rev()); |
| 104 | } |